gimp-print-devel

Re: [Gimp-print-devel] New Epson 1520 Print Files

[Robert L K. <rl...@al...>]

Forget about the patch.  I found time to commit the change.

Re: [Gimp-print-devel] New Epson 1520 Print Files

[Robert L K. <rl...@al...>]

Try this one:

Index: print-escp2.c
===================================================================
RCS file: /cvsroot/gimp-print/print/print-escp2.c,v
retrieving revision 1.119
diff -c -r1.119 print-escp2.c
*** print-escp2.c	2000/03/27 13:51:09	1.119
--- print-escp2.c	2000/04/03 23:17:19
***************
*** 77,83 ****
  		       int, int);
  static void *initialize_weave(int jets, int separation, int oversample,
  			      int horizontal, int vertical,
! 			      colormode_t colormode, int width, int linewidth);
  static void escp2_flush(void *, int model, int width, int hoffset, int ydpi,
  			int xdpi, FILE *prn);
  static void
--- 77,84 ----
  		       int, int);
  static void *initialize_weave(int jets, int separation, int oversample,
  			      int horizontal, int vertical,
! 			      colormode_t colormode, int width, int linewidth,
! 			      int vertical_row_separation);
  static void escp2_flush(void *, int model, int width, int hoffset, int ydpi,
  			int xdpi, FILE *prn);
  static void
***************
*** 119,124 ****
--- 120,126 ----
    int		right_margin;
    int		top_margin;
    int		bottom_margin;
+   int		separation_rows;
  } escp2_printer_t;
  
  #define MODEL_INIT_MASK		0xf
***************
*** 202,250 ****
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     1, 1, 1, 720, -1, -1, INCH_8_5, INCH_14, 14, 14, 9, 49
    },
    /* 1: Stylus Color Pro/Pro XL/400/500 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     48, 6, 48, 720, -1, 1, INCH_8_5, INCH_14, 14, 14, 9, 49
    },
    /* 2: Stylus Color 1500 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_NO
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     1, 1, 1, 720, -1, 1, INCH_11, INCH_17, 14, 14, 9, 49
    },
    /* 3: Stylus Color 600 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_600 | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49
    },
    /* 4: Stylus Color 800 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     64, 4, 64, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49
    },
    /* 5: Stylus Color 850 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     64, 4, 128, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49
    },
    /* 6: Stylus Color 1520/3000 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     1, 1, 128, 720, -1, 2, INCH_16_5, INCH_24, 8, 9, 9, 49
    },
  
    /* SECOND GENERATION PRINTERS */
--- 204,252 ----
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     1, 1, 1, 720, -1, -1, INCH_8_5, INCH_14, 14, 14, 9, 49, 1
    },
    /* 1: Stylus Color Pro/Pro XL/400/500 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     48, 6, 48, 720, -1, 1, INCH_8_5, INCH_14, 14, 14, 9, 49, 1
    },
    /* 2: Stylus Color 1500 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_NO
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     1, 1, 1, 720, -1, 1, INCH_11, INCH_17, 14, 14, 9, 49, 1
    },
    /* 3: Stylus Color 600 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_600 | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49, 1
    },
    /* 4: Stylus Color 800 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     64, 4, 64, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49, 1
    },
    /* 5: Stylus Color 850 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     64, 4, 128, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49, 1
    },
    /* 6: Stylus Color 1520/3000 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     1, 1, 128, 720, -1, 2, INCH_16_5, INCH_24, 8, 9, 9, 49, 4
    },
  
    /* SECOND GENERATION PRINTERS */
***************
*** 253,273 ****
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 49
    },
    /* 8: Stylus Photo EX */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 3, INCH_11, INCH_17, 9, 9, 9, 49
    },
    /* 9: Stylus Photo */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     32, 8, 32, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 49
    },
  
    /* THIRD GENERATION PRINTERS */
--- 255,275 ----
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 49, 1
    },
    /* 8: Stylus Photo EX */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 3, INCH_11, INCH_17, 9, 9, 9, 49, 1
    },
    /* 9: Stylus Photo */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     32, 8, 32, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 49, 1
    },
  
    /* THIRD GENERATION PRINTERS */
***************
*** 277,297 ****
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_600 | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     21, 7, 64, 720, 2, 3, INCH_8_5, INCH_14, 9, 9, 9, 18
    },
    /* 11: Stylus Color 640 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     32, 8, 64, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 18
    },
    /* 12: Stylus Color 740 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 3, INCH_11, INCH_17, 9, 9, 9, 18
    },
    /* 13: Stylus Color 900 */
    /* Dale Pontius thinks the spacing is 3 jets??? */
--- 279,299 ----
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_600 | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     21, 7, 64, 720, 2, 3, INCH_8_5, INCH_14, 9, 9, 9, 18, 1
    },
    /* 11: Stylus Color 640 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     32, 8, 64, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 18, 1
    },
    /* 12: Stylus Color 740 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 3, INCH_11, INCH_17, 9, 9, 9, 18, 1
    },
    /* 13: Stylus Color 900 */
    /* Dale Pontius thinks the spacing is 3 jets??? */
***************
*** 300,334 ****
      (MODEL_INIT_900 | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     96, 2, 192, 360, 0, 1, INCH_11, INCH_17, 9, 9, 9, 18
    },
    /* 14: Stylus Photo 750, 870 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     48, 6, 48, 360, 0, 4, INCH_8_5, INCH_14, 9, 9, 9, 18
    },
    /* 15: Stylus Photo 1200, 1270 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     48, 6, 48, 360, 0, 4, INCH_13, INCH_19, 9, 9, 9, 18
    },
    /* 16: Stylus Color 860 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 2, INCH_8_5, INCH_14, 9, 9, 9, 18
    },
    /* 17: Stylus Color 1160 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 2, INCH_13, INCH_19, 9, 9, 9, 18
    }
  };
  
--- 302,336 ----
      (MODEL_INIT_900 | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     96, 2, 192, 360, 0, 1, INCH_11, INCH_17, 9, 9, 9, 18, 1
    },
    /* 14: Stylus Photo 750, 870 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     48, 6, 48, 360, 0, 4, INCH_8_5, INCH_14, 9, 9, 9, 18, 1
    },
    /* 15: Stylus Photo 1200, 1270 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     48, 6, 48, 360, 0, 4, INCH_13, INCH_19, 9, 9, 9, 18, 1
    },
    /* 16: Stylus Color 860 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 2, INCH_8_5, INCH_14, 9, 9, 9, 18, 1
    },
    /* 17: Stylus Color 1160 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 2, INCH_13, INCH_19, 9, 9, 9, 18, 1
    }
  };
  
***************
*** 781,786 ****
--- 783,790 ----
    void *	weave;
    void *	dither;
    colormode_t colormode = COLOR_CCMMYK;
+   int		separation_rows = printer->separation_rows;
+ 
    if (v->image_type == IMAGE_MONOCHROME)
      {
        colormode = COLOR_MONOCHROME;
***************
*** 1072,1078 ****
    if (use_softweave)
      weave = initialize_weave(nozzles, nozzle_separation, horizontal_passes,
  			     vertical_passes, vertical_subsample, colormode,
! 			     bits, out_width);
    else
      weave = NULL;
  
--- 1076,1082 ----
    if (use_softweave)
      weave = initialize_weave(nozzles, nozzle_separation, horizontal_passes,
  			     vertical_passes, vertical_subsample, colormode,
! 			     bits, out_width, separation_rows);
    else
      weave = NULL;
  
***************
*** 2019,2024 ****
--- 2023,2032 ----
    int lineno;
    int vertical_oversample;	/* Vertical oversampling */
    int current_vertical_subpass;
+   int separation_rows;		/* Vertical spacing between rows. */
+ 				/* This is used for the 1520/3000, which */
+ 				/* use a funny value for the "print density */
+ 				/* in the vertical direction". */
  } escp2_softweave_t;
  
  #ifndef WEAVETEST
***************
*** 2037,2043 ****
  static void *
  initialize_weave(int jets, int sep, int osample, int v_subpasses,
  		 int v_subsample, colormode_t colormode, int width,
! 		 int linewidth)
  {
    int i;
    int k;
--- 2045,2051 ----
  static void *
  initialize_weave(int jets, int sep, int osample, int v_subpasses,
  		 int v_subsample, colormode_t colormode, int width,
! 		 int linewidth, int separation_rows)
  {
    int i;
    int k;
***************
*** 2058,2063 ****
--- 2066,2072 ----
    sw->vmod = sw->separation * sw->oversample;
    sw->horizontal_weave = osample;
    sw->pass_adjustment = (osample * sep + jets - 1) / jets;
+   sw->separation_rows = separation_rows;
  
    sw->weavefactor = (sw->njets + sw->separation - 1) / sw->separation;
    sw->jetsused = MIN(((sw->weavefactor) * sw->separation), sw->njets);
***************
*** 2412,2418 ****
      sw->last_pass_offset = pass->logicalpassstart;
    else if (pass->logicalpassstart > sw->last_pass_offset)
      {
!       int advance = pass->logicalpassstart - sw->last_pass_offset;
        int alo = advance % 256;
        int ahi = advance / 256;
        if (escp2_has_cap(model, MODEL_VARIABLE_DOT_MASK, MODEL_VARIABLE_4))
--- 2421,2428 ----
      sw->last_pass_offset = pass->logicalpassstart;
    else if (pass->logicalpassstart > sw->last_pass_offset)
      {
!       int advance = pass->logicalpassstart - sw->last_pass_offset -
! 	(sw->separation_rows - 1);
        int alo = advance % 256;
        int ahi = advance / 256;
        if (escp2_has_cap(model, MODEL_VARIABLE_DOT_MASK, MODEL_VARIABLE_4))
***************
*** 2478,2484 ****
  		fprintf(prn, "\033.%c%c%c%c", 1, 8 * 5, 5,
  			*linecount + pass->missingstartrows);
  	      else
! 		fprintf(prn, "\033.%c%c%c%c", 1, 5, 5,
  			*linecount + pass->missingstartrows);
  	      break;
  	    }
--- 2488,2494 ----
  		fprintf(prn, "\033.%c%c%c%c", 1, 8 * 5, 5,
  			*linecount + pass->missingstartrows);
  	      else
! 		fprintf(prn, "\033.%c%c%c%c", 1, 5 * sw->separation_rows , 5,
  			*linecount + pass->missingstartrows);
  	      break;
  	    }

Re: [Gimp-print-devel] New Epson 1520 Print Files

[Wendy R. G. C. K. C. <d_...@nc...>]

Quoting Robert L Krawitz <rl...@al...>:

>
> Either do "make print", or add an extra argument of 1
at the end of
> the call to initialize_weave() in escp2-weavetest.c.
>

I added the extra argument of 1 to the end of
the call to initialize_weave in escp2-weavetest.c.
It got a little further but still failed:


print-escp2.c: In function `escp2_print':
print-escp2.c:856: structure has no member named
`separation_rows'
print-escp2.c:786: warning: `separation_rows' might be
used uninitialized in this function
print-escp2.c: At top level:
print-escp2.c:375: warning: `escp2_cap' defined but not
used
make: *** [print-escp2.o] Error 1


-David

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This mail sent through IMP: http://web.horde.org/imp/

Re: [Gimp-print-devel] Epson 640 questions

[Robert L K. <rl...@al...>]

   Date: Mon, 3 Apr 2000 00:11:38 +0200
   From: Jim Mintha <ji...@ic...>

   On Sun, Apr 02, 2000 at 05:28:41PM -0400, Robert L Krawitz wrote:
   >    - I wasn't getting the chance to enter a print command in the dialog.
   >    It seems that the program is using "lpc status" to get printers and
   >    expects lines like:
   >    printer1:
   >    instead of lprng's 
   >    printer1@dodo
   >    After patching print.c I was able to print directly to the printer.  
   > 
   > The Setup button lets you set the printer command.

   Sorry should have been more clear.  If it does not find any printers
   (because of the different lpc output), the printer command field is
   disabled.  

The current mechanism is so incredibly fragile.  I'd actually really
like to rip out this autodetect stuff altogether.  Maybe for default
printers just define the "file" pseudoprinter, a default printer using
lpr if lpr exists, a default printer using lp if lp exists, and (more
importantly) a Create Printer dialog.  Mitsch or Steve, feel like
putting in a Create Printer?A

   > The 640 is supposedly not capable of 1440 dpi (although the 660 is).
   > I can't find the 640 on Epson's web site any more (it's been replaced
   > by the 660), but I thought I remembered that the 640 is only capable
   > of 720.  Maybe I'm confusing that with variable dot size.

   No it supports 1440x720 (it replaced the 600)  You can get the specs
   on it and other older ones by going to support, choose the printer,
   and then choose documentation - PDF format only.

   Basic specs:
   Black 64 nozzles
   Colour 96 (32 per colour)
   Max: 1440x720

If you'd like, you could try changing

  /* 11: Stylus Color 640 */
  {
    (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
     | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
     | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
    32, 8, 64, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 18
  },

to

  /* 11: Stylus Color 640 */
  {
    (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
     | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
     | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
    32, 8, 64, 360, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 18
  },

and see if that works.

-- 
Robert Krawitz <rl...@al...>      http://www.tiac.net/users/rlk/

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lp...@uu...
Project lead for The Gimp Print --  http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

[Gimp-print-devel] stuff

[Robert L K. <rl...@al...>]

For an indefinite period of time, I will not be able to do as much as
I've been doing thus far on the project.  Among other things, a close
relative has just been diagnosed with cancer, and that will require a
lot of time on all of our part.

-- 
Robert Krawitz <rl...@al...>      http://www.tiac.net/users/rlk/

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lp...@uu...
Project lead for The Gimp Print --  http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

Re: [Gimp-print-devel] New Epson 1520 Print Files

[Robert L K. <rl...@al...>]

   Date: Sun, 02 Apr 2000 22:09:44 -0700
   From: David Rosky <d_...@nc...>

   > It uses a spacing of 15 rows consistently.  It's basically equivalent to
   > our "1440 dpi highest quality" mode.

   That's interesting.  I wonder if maybe the best approach is
   to fix the softweave mode rather than trying to get the printer's
   microweave working.  The problem with the original softweave modes
   seemed to be that the nozzle patterns and/or page advances were
   not being interpreted by the printer the way the driver thought 
   they would be.  If you could get those corrected you'd probably 
   have it.

That's what I'm trying to do.

   >    Let me know if there are any additional testing or print
   >    files that would be helpful.
   > 
   > That should be enough to get me started.  Could you try the following
   > patch?  It's possible that it won't compile; my sandbox is currently
   > broken because of some code I'm working on; in that case, my
   > apologies.  If it works, could somebody check it in?
   > 

   I tried the patch, but it didn't compile.  Here's the error message:

   escp2-weavetest.c: In function `main':
   escp2-weavetest.c:112: too few arguments to function `initialize_weave'
   make: *** [escp2-weavetest.o] Error 1

Either do "make print", or add an extra argument of 1 at the end of
the call to initialize_weave() in escp2-weavetest.c.

-- 
Robert Krawitz <rl...@al...>      http://www.tiac.net/users/rlk/

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lp...@uu...
Project lead for The Gimp Print --  http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

Re: [Gimp-print-devel] New Epson 1520 Print Files

[David R. <d_...@nc...>]

Robert L Krawitz wrote:
> 
> 
> I don't know why it would show more grain (unless it's due to your
> partially clogged nozzle)

The difference in grain was very, very slight.  One thing that I
noticed is that in the "super microweave" mode, the head moves
at the faster speed used in 720dpi printing instead of the slower
speed used in the normal 1440 microweave mode.  Perhaps the
reduced settling time causes the very slight change.


> It uses a spacing of 15 rows consistently.  It's basically equivalent to
> our "1440 dpi highest quality" mode.
> 

That's interesting.  I wonder if maybe the best approach is
to fix the softweave mode rather than trying to get the printer's
microweave working.  The problem with the original softweave modes
seemed to be that the nozzle patterns and/or page advances were
not being interpreted by the printer the way the driver thought 
they would be.  If you could get those corrected you'd probably 
have it.

>    Let me know if there are any additional testing or print
>    files that would be helpful.
> 
> That should be enough to get me started.  Could you try the following
> patch?  It's possible that it won't compile; my sandbox is currently
> broken because of some code I'm working on; in that case, my
> apologies.  If it works, could somebody check it in?
> 

I tried the patch, but it didn't compile.  Here's the error message:

escp2-weavetest.c: In function `main':
escp2-weavetest.c:112: too few arguments to function `initialize_weave'
make: *** [escp2-weavetest.o] Error 1

-David

Re: [Gimp-print-devel] Epson Photo 700 soaks paper

[Robert L K. <rl...@al...>]

   Date: Sun, 02 Apr 2000 23:11:41 +0100
   From: Salvador Pinto Abreu <sp...@di...>

   I've been following the CVS version of gimp-print for some time now,
   and I'm having a hard time with its ink output on the Photo 700: it's
   putting out way too much ink.  This sort of works out with Epson paper
   (you can see the ink pass through to the back side but that's all).

   However, with the paper I've been using (Olmec Photo paper, 260g/m2)
   the amount of ink is such that it bleeds all over the sheet, not only
   the black but for all the inks.

   This doesn't happen with print 3.0.5.

What setting are you using?  If you're using the pseudo- 1440x1440 or
2880x720, those definitely don't work right.  Otherwise, try setting
the density lower.

I'm looking at some alternative dithering algorithms that should clear
this stuff up, BTW.

-- 
Robert Krawitz <rl...@al...>      http://www.tiac.net/users/rlk/

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lp...@uu...
Project lead for The Gimp Print --  http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

[Gimp-print-devel] Epson Photo 700 soaks paper

[Salvador P. A. <sp...@di...>]

Hi,

I've been following the CVS version of gimp-print for some time now,
and I'm having a hard time with its ink output on the Photo 700: it's
putting out way too much ink.  This sort of works out with Epson paper
(you can see the ink pass through to the back side but that's all).

However, with the paper I've been using (Olmec Photo paper, 260g/m2)
the amount of ink is such that it bleeds all over the sheet, not only
the black but for all the inks.

This doesn't happen with print 3.0.5.

Any hints as to what's going on?
../salvador

PS: I put up a sample photo of the soaked paper on
    http://home.di.uevora.pt/~spa/dscn3518-mod.jpg

Re: [Gimp-print-devel] Epson 640 questions

[Jim M. <ji...@ic...>]

On Sun, Apr 02, 2000 at 05:28:41PM -0400, Robert L Krawitz wrote:
>    - I wasn't getting the chance to enter a print command in the dialog.
>    It seems that the program is using "lpc status" to get printers and
>    expects lines like:
>    printer1:
>    instead of lprng's 
>    printer1@dodo
>    After patching print.c I was able to print directly to the printer.  
> 
> The Setup button lets you set the printer command.

Sorry should have been more clear.  If it does not find any printers
(because of the different lpc output), the printer command field is
disabled.  

> The 640 is supposedly not capable of 1440 dpi (although the 660 is).
> I can't find the 640 on Epson's web site any more (it's been replaced
> by the 660), but I thought I remembered that the 640 is only capable
> of 720.  Maybe I'm confusing that with variable dot size.

No it supports 1440x720 (it replaced the 600)  You can get the specs
on it and other older ones by going to support, choose the printer,
and then choose documentation - PDF format only.

Basic specs:
Black 64 nozzles
Colour 96 (32 per colour)
Max: 1440x720


>    - For the 720dpi the 720dpi-Microweave works and gives reasonable
>    output.  The 720-High Quality and 720-Highest Quality do not work -
>    they just continually form-feed paper on the printer.
> 
> Try the CVS version.  It was my understanding, though, that the 640
> worked in all modes (I think).

I will try it out.

> We always welcome more help :-)  If you have programming experience,
> and would like to fix up the 640 driver, I could add you to the
> developer list.  You'll just need to register for an account on
> sourceforge.net.

I do have programming experience (and a sourceforge account) but I
will wait until I have something concrete to contribute before
requesting access.

Thanks for the reply,
Jim

-- 
Jim Mintha                                       Email: ji...@ic...
System Administrator                              Work: +31 20 525-4919
Informatiseringscentrum                      	  Home: +31 20 662-3892
University of Amsterdam               Debian GNU/Linux: jm...@de...
_There are always Possibilities_                 http://jim.ultralinux.org

Re: [Gimp-print-devel] Epson 640 questions

[Robert L K. <rl...@al...>]

   Date: Sun, 2 Apr 2000 23:05:57 +0200
   From: Jim Mintha <ji...@ic...>

   - I wasn't getting the chance to enter a print command in the dialog.
   It seems that the program is using "lpc status" to get printers and
   expects lines like:
   printer1:
   instead of lprng's 
   printer1@dodo
   After patching print.c I was able to print directly to the printer.  

The Setup button lets you set the printer command.

   - The 640 driver doesn't show the 1440dpi entries, (it has
   MODEL_1440DPI_NO in the definition)  Is this just because it is not
   figured out yet?  I tried recompiling with MODEL_1440DPI_YES but the
   1440 ones don't work. 

The 640 is supposedly not capable of 1440 dpi (although the 660 is).
I can't find the 640 on Epson's web site any more (it's been replaced
by the 660), but I thought I remembered that the 640 is only capable
of 720.  Maybe I'm confusing that with variable dot size.

   - For the 720dpi the 720dpi-Microweave works and gives reasonable
   output.  The 720-High Quality and 720-Highest Quality do not work -
   they just continually form-feed paper on the printer.

Try the CVS version.  It was my understanding, though, that the 640
worked in all modes (I think).

   - Are the entries for Media Type/Source suppose to be disabled?

Yes.  Right now, we don't have anything useful to do with them.  Maybe
in the future.

   Lastly but maybe should have been first:

   - Are there archives of this list somewhere in a form where you can
   read through them quickly?  The archives at www.geocrawler.com are a
   bit clumsy to use. (no next/prev links)  One big mbox would be ideal.

Alas, no.

   Thanks, and I look forward to helping out with the driver.  I'm tired
   of rebooting (or vmware'ing) to windows just to get descent printer
   output.  

We always welcome more help :-)  If you have programming experience,
and would like to fix up the 640 driver, I could add you to the
developer list.  You'll just need to register for an account on
sourceforge.net.

-- 
Robert Krawitz <rl...@al...>      http://www.tiac.net/users/rlk/

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lp...@uu...
Project lead for The Gimp Print --  http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

[Gimp-print-devel] Epson 640 questions

[Jim M. <ji...@ic...>]

Recently tried out support for the 640 in gimp-print 3.1.2 and I have
some observations/questions:

- I wasn't getting the chance to enter a print command in the dialog.
It seems that the program is using "lpc status" to get printers and
expects lines like:
printer1:
instead of lprng's 
printer1@dodo
After patching print.c I was able to print directly to the printer.  

- The 640 driver doesn't show the 1440dpi entries, (it has
MODEL_1440DPI_NO in the definition)  Is this just because it is not
figured out yet?  I tried recompiling with MODEL_1440DPI_YES but the
1440 ones don't work. 

- For the 720dpi the 720dpi-Microweave works and gives reasonable
output.  The 720-High Quality and 720-Highest Quality do not work -
they just continually form-feed paper on the printer.

- Are the entries for Media Type/Source suppose to be disabled?

Lastly but maybe should have been first:

- Are there archives of this list somewhere in a form where you can
read through them quickly?  The archives at www.geocrawler.com are a
bit clumsy to use. (no next/prev links)  One big mbox would be ideal.

Thanks, and I look forward to helping out with the driver.  I'm tired
of rebooting (or vmware'ing) to windows just to get descent printer
output.  

Jim


-- 
Jim Mintha                                       Email: ji...@ic...
System Administrator                              Work: +31 20 525-4919
Informatiseringscentrum                      	  Home: +31 20 662-3892
University of Amsterdam               Debian GNU/Linux: jm...@de...
_There are always Possibilities_                 http://jim.ultralinux.org

Re: [Gimp-print-devel] Re: Membership in HP Solution Provider Program

[Robert L K. <rl...@al...>]

   Date: Sat, 01 Apr 2000 21:31:12 +0100
   From: Dave Hill <da...@mi...>

   It further says that the specifications of the ink cartridges
   (including Photo cartridge) are proprietary and will not be
   provided.

Well, that means either figuring out how it works, or that HP will
have a harder time selling printers to Linux users than companies that
are more open.

-- 
Robert Krawitz <rl...@al...>      http://www.tiac.net/users/rlk/

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lp...@uu...
Project lead for The Gimp Print --  http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

[Gimp-print-devel] Re: Membership in HP Solution Provider Program

[Dave H. <da...@mi...>]

I have managed to get registered as an "Affiliate member"
(which is free, as opposed to $495 per year!).

You need to give a company name (I have one, so that's OK); I
have looked through the legal blurb and can't find anything
about not releasing source code....

However...

The PCL Developer's guide that is available is dated Dec 99; it
has a few extra things documented, but not the "configure
raster data" or "configure palette" or anything about Photo
capabilities.

It also says that if a command is not documented in it, it is
either obsolete or HP proprietary.

It further says that the specifications of the ink cartridges
(including Photo cartridge) are proprietary and will not be
provided.

Sigh!

Dave

-- 
Dave Hill, Kempston, Bedford UK		da...@mi...
				davehill at users.sourceforge.net
Sicth munce ago, I cutn't evun spel enjuneer, and now I are one!

Re: [Gimp-print-devel] New Epson 1520 Print Files

[Robert L K. <rl...@al...>]

   Date: Sat, 01 Apr 2000 16:21:32 -0800
   From: David Rosky <d_...@nc...>

   http://www.nccn.net/~w_rosky/dsr/e1440newFO.prn.gz

   The new driver has an additional microweave mode called
   "Super" which is only available at 1440dpi on certain
   printers and generates something called "full overlap 
   microweave".  According to the help file, this mode helps 
   reduce banding even more than standard microweave.  Indeed, 
   one of my blue nozzles is currently partially clogged and 
   this mode did actually show less banding than the normal 
   microweave mode; however, it showed ever-so-slightly more 
   grain.

I don't know why it would show more grain (unless it's due to your
partially clogged nozzle), but it certainly should reduce banding.  It
uses a spacing of 15 rows consistently.  It's basically equivalent to
our "1440 dpi highest quality" mode.

   Let me know if there are any additional testing or print 
   files that would be helpful.

That should be enough to get me started.  Could you try the following
patch?  It's possible that it won't compile; my sandbox is currently
broken because of some code I'm working on; in that case, my
apologies.  If it works, could somebody check it in?

Index: print-escp2.c
===================================================================
RCS file: /cvsroot/gimp-print/print/print-escp2.c,v
retrieving revision 1.119
diff -c -r1.119 print-escp2.c
*** print-escp2.c	2000/03/27 13:51:09	1.119
--- print-escp2.c	2000/04/02 02:35:20
***************
*** 77,83 ****
  		       int, int);
  static void *initialize_weave(int jets, int separation, int oversample,
  			      int horizontal, int vertical,
! 			      colormode_t colormode, int width, int linewidth);
  static void escp2_flush(void *, int model, int width, int hoffset, int ydpi,
  			int xdpi, FILE *prn);
  static void
--- 77,84 ----
  		       int, int);
  static void *initialize_weave(int jets, int separation, int oversample,
  			      int horizontal, int vertical,
! 			      colormode_t colormode, int width, int linewidth,
! 			      int vertical_row_separation);
  static void escp2_flush(void *, int model, int width, int hoffset, int ydpi,
  			int xdpi, FILE *prn);
  static void
***************
*** 119,124 ****
--- 120,126 ----
    int		right_margin;
    int		top_margin;
    int		bottom_margin;
+   int		separation_rows;
  } escp2_printer_t;
  
  #define MODEL_INIT_MASK		0xf
***************
*** 202,250 ****
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     1, 1, 1, 720, -1, -1, INCH_8_5, INCH_14, 14, 14, 9, 49
    },
    /* 1: Stylus Color Pro/Pro XL/400/500 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     48, 6, 48, 720, -1, 1, INCH_8_5, INCH_14, 14, 14, 9, 49
    },
    /* 2: Stylus Color 1500 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_NO
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     1, 1, 1, 720, -1, 1, INCH_11, INCH_17, 14, 14, 9, 49
    },
    /* 3: Stylus Color 600 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_600 | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49
    },
    /* 4: Stylus Color 800 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     64, 4, 64, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49
    },
    /* 5: Stylus Color 850 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     64, 4, 128, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49
    },
    /* 6: Stylus Color 1520/3000 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     1, 1, 128, 720, -1, 2, INCH_16_5, INCH_24, 8, 9, 9, 49
    },
  
    /* SECOND GENERATION PRINTERS */
--- 204,252 ----
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     1, 1, 1, 720, -1, -1, INCH_8_5, INCH_14, 14, 14, 9, 49, 1
    },
    /* 1: Stylus Color Pro/Pro XL/400/500 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     48, 6, 48, 720, -1, 1, INCH_8_5, INCH_14, 14, 14, 9, 49, 1
    },
    /* 2: Stylus Color 1500 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_NO
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     1, 1, 1, 720, -1, 1, INCH_11, INCH_17, 14, 14, 9, 49, 1
    },
    /* 3: Stylus Color 600 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_600 | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49, 1
    },
    /* 4: Stylus Color 800 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     64, 4, 64, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49, 1
    },
    /* 5: Stylus Color 850 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     64, 4, 128, 720, 0, 2, INCH_8_5, INCH_14, 8, 9, 9, 49, 1
    },
    /* 6: Stylus Color 1520/3000 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     1, 1, 128, 720, -1, 2, INCH_16_5, INCH_24, 8, 9, 9, 49, 4
    },
  
    /* SECOND GENERATION PRINTERS */
***************
*** 253,273 ****
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 49
    },
    /* 8: Stylus Photo EX */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 3, INCH_11, INCH_17, 9, 9, 9, 49
    },
    /* 9: Stylus Photo */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     32, 8, 32, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 49
    },
  
    /* THIRD GENERATION PRINTERS */
--- 255,275 ----
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 49, 1
    },
    /* 8: Stylus Photo EX */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     32, 8, 32, 720, 0, 3, INCH_11, INCH_17, 9, 9, 9, 49, 1
    },
    /* 9: Stylus Photo */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_GENERIC | MODEL_GRAYMODE_NO | MODEL_1440DPI_NO),
!     32, 8, 32, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 49, 1
    },
  
    /* THIRD GENERATION PRINTERS */
***************
*** 277,297 ****
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_600 | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     21, 7, 64, 720, 2, 3, INCH_8_5, INCH_14, 9, 9, 9, 18
    },
    /* 11: Stylus Color 640 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     32, 8, 64, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 18
    },
    /* 12: Stylus Color 740 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 3, INCH_11, INCH_17, 9, 9, 9, 18
    },
    /* 13: Stylus Color 900 */
    /* Dale Pontius thinks the spacing is 3 jets??? */
--- 279,299 ----
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_600 | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     21, 7, 64, 720, 2, 3, INCH_8_5, INCH_14, 9, 9, 9, 18, 1
    },
    /* 11: Stylus Color 640 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_NO),
!     32, 8, 64, 720, 0, 3, INCH_8_5, INCH_14, 9, 9, 9, 18, 1
    },
    /* 12: Stylus Color 740 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 3, INCH_11, INCH_17, 9, 9, 9, 18, 1
    },
    /* 13: Stylus Color 900 */
    /* Dale Pontius thinks the spacing is 3 jets??? */
***************
*** 300,334 ****
      (MODEL_INIT_900 | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     96, 2, 192, 360, 0, 1, INCH_11, INCH_17, 9, 9, 9, 18
    },
    /* 14: Stylus Photo 750, 870 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     48, 6, 48, 360, 0, 4, INCH_8_5, INCH_14, 9, 9, 9, 18
    },
    /* 15: Stylus Photo 1200, 1270 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     48, 6, 48, 360, 0, 4, INCH_13, INCH_19, 9, 9, 9, 18
    },
    /* 16: Stylus Color 860 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 2, INCH_8_5, INCH_14, 9, 9, 9, 18
    },
    /* 17: Stylus Color 1160 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 2, INCH_13, INCH_19, 9, 9, 9, 18
    }
  };
  
--- 302,336 ----
      (MODEL_INIT_900 | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     96, 2, 192, 360, 0, 1, INCH_11, INCH_17, 9, 9, 9, 18, 1
    },
    /* 14: Stylus Photo 750, 870 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     48, 6, 48, 360, 0, 4, INCH_8_5, INCH_14, 9, 9, 9, 18, 1
    },
    /* 15: Stylus Photo 1200, 1270 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_YES | MODEL_720DPI_PHOTO | MODEL_VARIABLE_4
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_NO | MODEL_1440DPI_YES),
!     48, 6, 48, 360, 0, 4, INCH_13, INCH_19, 9, 9, 9, 18, 1
    },
    /* 16: Stylus Color 860 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 2, INCH_8_5, INCH_14, 9, 9, 9, 18, 1
    },
    /* 17: Stylus Color 1160 */
    {
      (MODEL_INIT_STANDARD | MODEL_HASBLACK_YES
       | MODEL_6COLOR_NO | MODEL_720DPI_DEFAULT | MODEL_VARIABLE_NORMAL
       | MODEL_COMMAND_1999 | MODEL_GRAYMODE_YES | MODEL_1440DPI_YES),
!     48, 6, 144, 360, 0, 2, INCH_13, INCH_19, 9, 9, 9, 18, 1
    }
  };
  
***************
*** 781,786 ****
--- 783,790 ----
    void *	weave;
    void *	dither;
    colormode_t colormode = COLOR_CCMMYK;
+   int		separation_rows;
+ 
    if (v->image_type == IMAGE_MONOCHROME)
      {
        colormode = COLOR_MONOCHROME;
***************
*** 849,854 ****
--- 853,859 ----
  	  real_horizontal_passes = horizontal_passes;
  	  vertical_passes = res->vertical_passes;
  	  vertical_subsample = res->vertical_subsample;
+ 	  separation_rows = res->separation_rows;
  	  if (use_softweave && escp2_xres(model) < 720)
  	    horizontal_passes *= 720 / escp2_xres(model);
  	  xdpi = res->hres;
***************
*** 1072,1078 ****
    if (use_softweave)
      weave = initialize_weave(nozzles, nozzle_separation, horizontal_passes,
  			     vertical_passes, vertical_subsample, colormode,
! 			     bits, out_width);
    else
      weave = NULL;
  
--- 1077,1083 ----
    if (use_softweave)
      weave = initialize_weave(nozzles, nozzle_separation, horizontal_passes,
  			     vertical_passes, vertical_subsample, colormode,
! 			     bits, out_width, separation_rows);
    else
      weave = NULL;
  
***************
*** 2019,2024 ****
--- 2024,2033 ----
    int lineno;
    int vertical_oversample;	/* Vertical oversampling */
    int current_vertical_subpass;
+   int separation_rows;		/* Vertical spacing between rows. */
+ 				/* This is used for the 1520/3000, which */
+ 				/* use a funny value for the "print density */
+ 				/* in the vertical direction". */
  } escp2_softweave_t;
  
  #ifndef WEAVETEST
***************
*** 2037,2043 ****
  static void *
  initialize_weave(int jets, int sep, int osample, int v_subpasses,
  		 int v_subsample, colormode_t colormode, int width,
! 		 int linewidth)
  {
    int i;
    int k;
--- 2046,2052 ----
  static void *
  initialize_weave(int jets, int sep, int osample, int v_subpasses,
  		 int v_subsample, colormode_t colormode, int width,
! 		 int linewidth, int separation_rows)
  {
    int i;
    int k;
***************
*** 2058,2063 ****
--- 2067,2073 ----
    sw->vmod = sw->separation * sw->oversample;
    sw->horizontal_weave = osample;
    sw->pass_adjustment = (osample * sep + jets - 1) / jets;
+   sw->separation_rows = separation_rows;
  
    sw->weavefactor = (sw->njets + sw->separation - 1) / sw->separation;
    sw->jetsused = MIN(((sw->weavefactor) * sw->separation), sw->njets);
***************
*** 2412,2418 ****
      sw->last_pass_offset = pass->logicalpassstart;
    else if (pass->logicalpassstart > sw->last_pass_offset)
      {
!       int advance = pass->logicalpassstart - sw->last_pass_offset;
        int alo = advance % 256;
        int ahi = advance / 256;
        if (escp2_has_cap(model, MODEL_VARIABLE_DOT_MASK, MODEL_VARIABLE_4))
--- 2422,2429 ----
      sw->last_pass_offset = pass->logicalpassstart;
    else if (pass->logicalpassstart > sw->last_pass_offset)
      {
!       int advance = pass->logicalpassstart - sw->last_pass_offset -
! 	(sw->separation_rows - 1);
        int alo = advance % 256;
        int ahi = advance / 256;
        if (escp2_has_cap(model, MODEL_VARIABLE_DOT_MASK, MODEL_VARIABLE_4))
***************
*** 2478,2484 ****
  		fprintf(prn, "\033.%c%c%c%c", 1, 8 * 5, 5,
  			*linecount + pass->missingstartrows);
  	      else
! 		fprintf(prn, "\033.%c%c%c%c", 1, 5, 5,
  			*linecount + pass->missingstartrows);
  	      break;
  	    }
--- 2489,2495 ----
  		fprintf(prn, "\033.%c%c%c%c", 1, 8 * 5, 5,
  			*linecount + pass->missingstartrows);
  	      else
! 		fprintf(prn, "\033.%c%c%c%c", 1, 5 * sw->separation_rows , 5,
  			*linecount + pass->missingstartrows);
  	      break;
  	    }

[Gimp-print-devel] New Epson 1520 Print Files

[David R. <d_...@nc...>]

I have downloaded the newest Epson 1520 Windows driver
and have generated the following new print files:


http://www.nccn.net/~w_rosky/dsr/e720new.prn.gz

This is a new version of the 720dpi "microweave" print
file.


http://www.nccn.net/~w_rosky/dsr/e1440new.prn.gz

This is a new version of the 1440dpi microweave print
file.


http://www.nccn.net/~w_rosky/dsr/e1440newFO.prn.gz

The new driver has an additional microweave mode called
"Super" which is only available at 1440dpi on certain
printers and generates something called "full overlap 
microweave".  According to the help file, this mode helps 
reduce banding even more than standard microweave.  Indeed, 
one of my blue nozzles is currently partially clogged and 
this mode did actually show less banding than the normal 
microweave mode; however, it showed ever-so-slightly more 
grain.

Let me know if there are any additional testing or print 
files that would be helpful.

-David

Re: [Gimp-print-devel] RE: Epson 1520 issues

[David R. <d_...@nc...>]

Robert L Krawitz wrote:
> 
> 
> Hmm.  That's interesting.  How is the 720?  Is that correct?
> 

Actually, gimp-print's 720dpi microweave mode is very fast, on
par with the print speed in Windows.  The only difference
is in the print quality, with Windows a little better in
graininess and patterning and gimp-print a little better in
tonality and contrast.

>    http://www.nccn.net/~w_rosky/dsr/e720.prn.gz
>    http://www.nccn.net/~w_rosky/dsr/e1440.prn.gz
> 
> Thanks!
> 

I should make one note on the files:  The driver is the one
that shipped with the printer when I bought it around two
years ago.  The driver has been updated several times since
then by Epson but I haven't bothered to update it since I've
not had any problems with it.  To help with the gimp-print
development, however, I'll download the newest version of
the driver and generate new print files just in case there's
been any change in the formatting of the data.

> 
> That happens on my EX, also.  Does it happen differently with the
> plugin vs. Windows?

Yes, the page does not back up any visble amount with the
gimp-print plugin.  It's hard to tell how much it's backing
up with the windows driver because the reverse feed is
immediately followed by a page advance, but it seems to be
around 1/4 inch or so which would be about what is required
to get the plugin's image up to the top of the page.

-David

Re: [Gimp-print-devel] RE: Epson 1520 issues

[Robert L K. <rl...@al...>]

I have the files.  It's quite different from anything I've seen
before.

On the 720 side, it looks like this:

00000058  1b  (  G 01 00 01 
0000005e  1b  (  U 01 00 05 
00000064  1b  (  C 02 00 f0 1e 
0000006b  1b  (  c 04 00 4e 00 82 1d 
00000074  1b  U 01 
00000077  1b  (  e 02 00 00 02 
0000007e  1b  (  K 02 00 00 02 
00000085  1b  (  i 01 00 00 *0d 
...
0002bce9  1b  (  v 02 00 3d 00 
0002bcf0  1b  \    09 
0002bcf4  1b  r 00 
0002bcf7  1b  . 01 14 05 40 00 05  (1280, 64) *0d 
0002c2e2  1b  \    09 
0002c2e6  1b  r 01 
0002c2e9  1b  . 01 14 05 40 00 05  (1280, 64) *0d 
0002e823  1b  \    09 
0002e827  1b  r 02 
0002e82a  1b  . 01 14 05 40 00 05  (1280, 64) *0d 
00030f5b  1b  \    09 
00030f5f  1b  r 04 
00030f62  1b  . 01 14 05 40 00 05  (1280, 64) *0d 
000330d4  1b  (  v 02 00 3d 00 

The basic unit is 1/720", and it's not using microweave.  No surprise
there.  Just because Epson's driver calls it microweave doesn't mean
that that's what the printer's doing.

The 14 (hex; in decimal that's 20) indicates a vertical spacing of
20/3600" or 1/180" (on every other printer I've seen, in 720 dpi and
higher that is locked to 5, or 5/3600" or 1/720").  The vertical
advance is always 0x3d, or 61 (!) rows.  Well OK, I *think* I see the
logic here.  This is really a (64,4) printer, but with a somewhat odd
specification of the vertical spacing.  My code prints (64,4) as three
increments of 65 followed by one increment of 61.  The Epson driver
always advances by 61, but then there are three extra rows (the
difference between 1/180" and 1/720" is 3/720").


The 1440 file is similar:

00000058  1b  (  G 01 00 01 
0000005e  1b  (  U 01 00 05 
00000064  1b  (  C 02 00 f0 1e 
0000006b  1b  (  c 04 00 42 00 82 1d 
00000074  1b  U 01 
00000077  1b  (  e 02 00 00 01 
0000007e  1b  (  K 02 00 00 02 
00000085  1b  (  i 01 00 00 *0d 
0000008c  1b  (  v 02 00 eb 0c 
...
0000444b  1b  (  v 02 00 1f 00 
00004452  1b  \    09 
00004456  1b  r 01 
00004459  1b  (  s 01 00 02 
0000445f  1b  . 01 14 05 3e 00 05  (1280, 62) *0d 
00005130  1b  \    09 
00005134  1b  r 02 
00005137  1b  (  s 01 00 02 
0000513d  1b  . 01 14 05 3e 00 05  (1280, 62) *0d 
0000619f  1b  \    09 
000061a3  1b  r 04 
000061a6  1b  (  s 01 00 02 
000061ac  1b  . 01 14 05 3e 00 05  (1280, 62) *0d 
00007223  1b  (  v 02 00 1f 00 
0000722a  1b  \    09 
0000722e  1b  (  \ 04 00 a0 05 01 00 
00007237  1b  r 01 
0000723a  1b  (  s 01 00 02 
00007240  1b  . 01 14 05 3e 00 05  (1280, 62) *0d 
00008241  1b  \    09 
00008245  1b  (  \ 04 00 a0 05 01 00 
0000824e  1b  r 02 
00008251  1b  (  s 01 00 02 
00008257  1b  . 01 14 05 3e 00 05  (1280, 62) *0d 
00009769  1b  \    09 
0000976d  1b  (  \ 04 00 a0 05 01 00 
00009776  1b  r 04 
00009779  1b  (  s 01 00 02 
0000977f  1b  . 01 14 05 3e 00 05  (1280, 62) *0d 

It's interesting to note that they haven't optimized out the extra
horizontal space commands (ESC\ is the old one that spaces in printer
units; ESC(\ is the new one that can space in 1/1440").  This time,
though, the vertical spacing is 0x1f (31) consistently.  My driver
does 33,29,29,29 spacing.  I don't really understand the 31 spacing,
though.  I would have expected to see 29 (0x1d).  Another mystery.

So I'm not quite exactly certain how to interpret this, but I think
I'm starting to see what's going on here.  I don't know just when I'll
get a chance to look at it, but if someone else wants to take a shot
at it...

-- 
Robert Krawitz <rl...@al...>      http://www.tiac.net/users/rlk/

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lp...@uu...
Project lead for The Gimp Print --  http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

Re: [Gimp-print-devel] RE: Epson 1520 issues

[Robert L K. <rl...@al...>]

   Date: Fri, 31 Mar 2000 21:24:07 -0800
   From: David Rosky <d_...@nc...>

   I have finally tried the 1.119 version and the results were 
   different but still not correct.  The magenta was horizontally 
   offset from the cyan and yellow (by about 2cm to the right) 
   and the density seems too low; however, the image was not
   expanded in the vertical dimension.  The speed is still
   many, many, times slower than 720dpi, apparently still
   printing one or two nozzles at a time, with the paper
   advancing microscopically between scans.

Hmm.  That's interesting.  How is the 720?  Is that correct?

   http://www.nccn.net/~w_rosky/dsr/e720.prn.gz
   http://www.nccn.net/~w_rosky/dsr/e1440.prn.gz

Thanks!

   1) I timed the printing of an image in the 1440 and 720 
   "microweave" modes.  The 1440dpi image took about four times 
   longer to print (head in motion continuously), which seems to 
   verify the assumption of two-pass printing.  At 1440, the paper 
   advances a small but visible amount between each scan of the 
   head, and the head definitely moves more slowly than in 720dpi 
   mode (somewhere around 1/2 speed), parhaps to allow increased
   settling time.

I know that some printers have multiple head speeds.

   2) A manually fed piece of paper actually backs up a bit
   before the printing starts.  Perhaps this is how they 
   attack the problem of vertical offset on the page.  I'm
   not sure if the driver or the application is doing this.

That happens on my EX, also.  Does it happen differently with the
plugin vs. Windows?

Re: [Gimp-print-devel] RE: Epson 1520 issues

[David R. <d_...@nc...>]

Robert L Krawitz wrote:
> 
> 
> Let me know how it works now.
> 

I have finally tried the 1.119 version and the results were 
different but still not correct.  The magenta was horizontally 
offset from the cyan and yellow (by about 2cm to the right) 
and the density seems too low; however, the image was not
expanded in the vertical dimension.  The speed is still
many, many, times slower than 720dpi, apparently still
printing one or two nozzles at a time, with the paper
advancing microscopically between scans.

In order to help make the process less open-loop, I have
taken Eric's suggestion and generated two files from
the output of the Windows driver - one at 720dpi microweave,
and the other at 1440 dpi microweave.  To keep the file size
down, the images are small, but they are big enough so that 
they are at least three or four times the height of the print 
head (which is fairly big on the 1520).  The files should be 
accessable here:

http://www.nccn.net/~w_rosky/dsr/e720.prn.gz
http://www.nccn.net/~w_rosky/dsr/e1440.prn.gz

A few more observations and comparisons regarding the Windows
driver:  

1) I timed the printing of an image in the 1440 and 720 
"microweave" modes.  The 1440dpi image took about four times 
longer to print (head in motion continuously), which seems to 
verify the assumption of two-pass printing.  At 1440, the paper 
advances a small but visible amount between each scan of the 
head, and the head definitely moves more slowly than in 720dpi 
mode (somewhere around 1/2 speed), parhaps to allow increased
settling time.

2) A manually fed piece of paper actually backs up a bit
before the printing starts.  Perhaps this is how they 
attack the problem of vertical offset on the page.  I'm
not sure if the driver or the application is doing this.

3) At 720dpi, the diffusion in the Windows output seems
a bit more smooth with a little less graininess and
patterning even in areas of medium density; however,
the gimp-print driver seems to have better tonality
and contrast (both drivers were used with default
settings).

Regards,

David

Re: [Gimp-print-devel] Difference between EPSON USB and Parallel Interface

[Robert L K. <rl...@al...>]

   Date: Fri, 31 Mar 2000 18:45:23 -0000
   From: Karl Heinz Kremer <kh...@kh...>

   There is a discussion going on on the USB list right now about
   how to handle the different init strings that newer EPSON
   printers need for USB and parallel interfaces. It seems that
   a job that is created for a parallel interface will not print
   when sent through USB. This is not the case for the STC740,
   but the 750 and 800 do need a special string for USB. Is
   this something that would explain some of the problems 
   people were having with different printers some time ago?

I've certainly heard that there are problems with USB printers, so it
might explain some of the stuff.

-- 
Robert Krawitz <rl...@al...>      http://www.tiac.net/users/rlk/

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lp...@uu...
Project lead for The Gimp Print --  http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

Re: [Gimp-print-devel] Difference between EPSON USB and Parallel Interface

[<sh...@al...>]

> There is a discussion going on on the USB list right now about
> how to handle the different init strings that newer EPSON
> printers need for USB and parallel interfaces. It seems that
> a job that is created for a parallel interface will not print
> when sent through USB. This is not the case for the STC740,
> but the 750 and 800 do need a special string for USB. Is
> this something that would explain some of the problems 
> people were having with different printers some time ago?

Unlikely.  The printers that require this string will do absolutely nothing
at all (or almost nothing) without it.  Were there any reports of people
with printers that did nothing?  I don't recall any.

Eric

[Gimp-print-devel] Difference between EPSON USB and Parallel Interface

[Karl H. K. <kh...@kh...>]

There is a discussion going on on the USB list right now about
how to handle the different init strings that newer EPSON
printers need for USB and parallel interfaces. It seems that
a job that is created for a parallel interface will not print
when sent through USB. This is not the case for the STC740,
but the 750 and 800 do need a special string for USB. Is
this something that would explain some of the problems 
people were having with different printers some time ago?

I sent a question to EPSON already. Maybe they can shed some
light on this.

Karl Heinz

Re: Printer specific Option Choices [ was Re: [Gimp-print-devel] RE: Epson 1520 issues ]

[S. M. <sm...@rn...>]

Karl Heinz Kremer wrote:
> 
> Robert L Krawitz <rl...@al...> said:
> [ ... ]
> >
> > We really need a GUI (and a system architecture) that allows the
> print
> > driver to pass arbitrary printer-specific option choices through to
> > the user.  PDQ does a lot of this.  It would be nice to figure out a
> > way to leverage PDQ or snarf some of its code (I think it's GPL).
> 
> Before we go out and use these functions from PDQ, we should try
> to understand exactly what we need.
> 
> We are already using some degree of printer specific options for
> PostScript devices. This means that a rudimentary PPD parser is
> already in the plugin code. PPDs are of course very PostScript
> specific and it probably does not make a lot of sense to use them
> without modifying the concept a little bit. Just in case you are
> not familiar with the PPD concept, here's a very brief introduction:
> 
> Adobe uses PPDs for PostScript printers to create a common device
> driver interface for both Windows and Macs. The PPD files contain
> information about which commands need to be send to the printer in
> order to select a feature. So if you want to have your document
> printed duplex you (or your driver) looks through the PPD file until
> you find the Duplex setting and just send down the string that's
> listed to the printer. Pretty easy and straight forward. Now what
> makes PPDs really interesting is their connection to the GUI. For
> every feature there is information about how to display the selection
> dialog, the strings to use for the options and lots of information
> about constraints. These constraints are rules identifying conditions
> when a certain option can be displayed or can not be displayed. It
> does e.g. not make a lot of sense to select to print on transparency
> material in duplex mode. So the PPD has some mechanisms in place to
> identify these conditions so that the driver can disallow them.
> 
> The CUPS project has a full blown PPD parser.
> 
> Another solution that we should look at is using XML to define the
> printer specific options. Again, we already have a parser that can
> handle XML files.
> 
> Regardless of which format we use to identify the printer specific
> options, we still need two things: A user interface concept that
> can deal with these options and a way to communicate the settings
> to the plugin which then will use some kind of logic to decide what
> to send to the printer. If we want to be really generic then this
> sounds like we also need some kind of extension language that can
> be used to create small (or not so small) procedures that will be
> called from within the plugin to "compute" the commands we need
> to send to the printer.
> 
> Any comments?
> 
> Karl Heinz
>  
What your describing is suspiciously close to C++ inheritance (which
would probably solve some of these issues, but not all).  I'm still
trying to figure out what a good gui approach might be.  I do plan on
converting the existing dialog to a tabbed notebook type thing (once I
figure out exactly how).  Perhaps one or more tabs could be built from a
config table of "extra" capabilities.  The table would have to have
callbacks of some kind - I guess maybe some type of language would come
in handy here.

Steve

-----------------------------------------
Just because I have a short attention span
doesn't mean I
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Re: [Gimp-print-devel] RE: Epson 1520 issues

[Robert L K. <rl...@al...>]

   Date: Wed, 29 Mar 2000 08:47:45 -0800
   From: David Rosky <dav...@ts...>

   I wasn't familiar with PDQ, so I looked up its web page.  It seems
   like a nice system and I think I'll try it out.  With respect to
   gimp-print, since PDQ uses Ghostscript to render postscript, and
   since gimp-print has a Ghostscript driver manifestation, wouldn't
   the two already be able to work together?  Presumably, gimp-print
   could receive printer-specific options from PDQ in the form of 
   Ghostscript command line options. ??

Yes.  I've written pdq descriptions; they're in Ghost/gs-stp.pdq.

   > That's a limitation of the driver in its current form.  I think I know
   > how to get rid of that, although it will make for a bit more banding
   > at the top, but it's going to be a fair bit of work to do.  It's
   > definitely something I want to fix before 3.2.  It actually might be
   > possible to get even closer than that, but let's do first things
   > first.

   I agree, it's not a big limitation at this point and functionality
   comes first.

OK.