gimp-print-devel

Re: [Gimp-print-devel] stylus 660, gs 6.01

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

Hrafnkell Eiriksson wrote:
> 
> On Mon, Apr 24, 2000 at 06:56:30AM -0000, Karl Heinz Kremer wrote:
> > a different set of parameters. This makes it possible to have one queue
> > for line art on normal paper, one for photos on glossy paper, and so on.
> 
> This assumes that every user of the plugin (that is every gimp
> user) is also a system administrator. That is not the case
> in reality so I'm not sure if everyone will like this.
> 
> --
> //-----------------------//-------------------------------------------------
> //  Hrafnkell Eiriksson  //
> //  he...@kv...        //
> //  TF3HR                //  "Blessed are they who go around in circles,
> //                       //   for they shall be known as Wheels"
>
This is a good point, although I suspect the majority of gimp users have
at least some control over print queue definitions.  I've recently taken
responsibility for GUI maintainance, but have a limited amount of time
to work on it.  If you have any suggestions for overcoming this (aside
from removing the feature), I would appreciate hearing them.  In fact
any suggestions for improving useability are welcome.  I'm in the
process of converting the GUI to a notebook format, and this would be
the ideal time to incorporate major changes.

Steve

-----------------------------------------
Just because I have a short attention span
doesn't mean I
------------------------------------------

[Gimp-print-devel] dithering stuff

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

I ran a few experiments just now.  For the test patterns that I use,
I've found that ordered dither works very nicely, but I just tried
printing a thumbnail of a photograph, and the ordered dither looks
awful.  Random Floyd-Steinberg works best for that.

This should come as no real surprise to anyone, but I think that
having the choice of dithering algorithms really comes in handy.  At
some point this should feed into a set of default profiles for
photographs, line art, etc. (which we have a start on).

I'm really looking forward to (hopefully) getting your stuff, Raph!

-- 
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] Epson 740

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

On Mon, Apr 24, 2000 at 07:49:38PM -0400, Robert L Krawitz wrote:
> For $1,000,000:
>=20
> A) The printer's out of ink.
> B) rlk screwed up again.
> C) The print head is dirty.
> D) The printer knows it's connected to a Linux box.
>=20
> You have three lifelines left.

Can I call a friend?=20

Stupid me! The problem shows up when I'm queuing a second image
while the first one is printing and I don't have paper in the printer.
54rT66666666666666666666666666 ... that's my cat walking over the=20
yhujjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj=
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj=
jjjjjj                                                                     =
                       =20
=2E.. keyboard :-)

So the printer runs out of paper when it tries do print the next
job. I insert paper and push the paper feed button, the printer
starts but either produces the white bar, reprints a quarter inch
or form feeds the page. I guess it's a problem with the USB
connection.=20

Karl Heinz

--=20
Karl Heinz Kremer                                      kh...@kh...
                                                http://www.khk.net

Re: [Gimp-print-devel] stylus 660, gs 6.01

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

BTW, I just checked in an attempt at a driver for the 660 (and code
for the 640 that *might* work at 1440).  Folks with 660's and 640's,
please give it a try.

-- 
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] Epson 740

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

   Date: Mon, 24 Apr 2000 19:38:07 -0400
   From: Karl Heinz Kremer <kh...@kh...>

   You are too quick .... again. I am in the middle of a test run with=20
   the test image I just announced to the list. I think I also found the
   reason for the white bar in the image I submitted yesterday (the
   microweave test case):

For $1,000,000:

A) The printer's out of ink.
B) rlk screwed up again.
C) The print head is dirty.
D) The printer knows it's connected to a Linux box.

You have three lifelines left.
			  
			  The printer does great, the dithering
   algorithms are getting better by the hour.=20

I'm glad *someone* approves :-)

-- 
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] Epson 740

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

On Mon, Apr 24, 2000 at 07:29:52PM -0400, Robert L Krawitz wrote:
>    Date: Mon, 24 Apr 2000 19:54:27 +0200
>    From: Frank van Maarseveen <F.v...@in...>
>=20
>    I'm trying gimp 1.0.4 + print-3.1.3 on a RedHat 6.1 box for
>    this printer. This doesn't look good. I have tried various
>    settings in the file->print menu but at best the color dithering
>    was much worse than with ghostscript: I tried versions 5.10 and 6.01, =
both
>    with .upp files for the Epson 740 which I got from another place.
>=20
> What kind of image did you try to print?  How do other people feel
> about the 740?

You are too quick .... again. I am in the middle of a test run with=20
the test image I just announced to the list. I think I also found the
reason for the white bar in the image I submitted yesterday (the
microweave test case): The printer does great, the dithering
algorithms are getting better by the hour.=20

My last test will be to print the test image with the EPSON driver
and compare it to the six 720dpi/variable dot size prints I've done
using all six dithering methods.

All I can say for now is that they are all considerably better than=20
what I've seen from the GhostScript uniprint driver.

>=20
>    And even the uniprint driver in ghostscript dithers less good
>    than the Epson supplied Windows drivers (a friend tried it for
>    me because I don't have Windows9~).
>=20
>    After experimenting a while I noticed that the print output
>    of gimp is not reproducable: as if something is really going wrong.
>    Suddenly the white background turned into black (lots of ink...).
>    When the same picture is printed to a file multiple times the
>    output tends to shrink in size:
>=20
>    -rw-r--r--   1 fvm      sec        267562 Apr 24 19:04 720hq-postcard
>    -rw-r--r--   1 fvm      sec        224692 Apr 24 19:05 720hq-postcard2
>    -rw-r--r--   1 fvm      sec        181367 Apr 24 19:06 720hq-postcard3
>    -rw-r--r--   1 fvm      sec        145868 Apr 24 19:08 720hq-postcard4
>    After restarting gimp:
>    -rw-r--r--   1 fvm      sec        690102 Apr 24 19:43 720hq-postcard5
>    -rw-r--r--   1 fvm      sec        561821 Apr 24 19:45 720hq-postcard6
>    -rw-r--r--   1 fvm      sec        470567 Apr 24 19:46 720hq-postcard7
>    -rw-r--r--   1 fvm      sec        392459 Apr 24 19:47 720hq-postcard8
>    -rw-r--r--   1 fvm      sec        331625 Apr 24 19:47 720hq-postcard9
>    -rw-r--r--   1 fvm      sec        281019 Apr 24 19:48 720hq-postcard10
>=20
>    Settings in file->print menu:
>    printer:	Epson Stylus Color 740
>    Media size:	postcard
>    Ink type:	single dot size
>    Resolution	720 DPI High Quality
>=20
> Now this is really bizarre.  It's as though the image itself is
> getting smashed somehow?  Can anyone else experiment with Gimp 1.0.4
> and report back?

I'm using Gimp 1.1.20, so 1.0.4 could be the source for your problems.

Karl Heinz

--=20
Karl Heinz Kremer                                      kh...@kh...
                                                http://www.khk.net

Re: [Gimp-print-devel] stylus 660, gs 6.01

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

   Date: Mon, 24 Apr 2000 21:07:42 +0200
   From: Hrafnkell Eiriksson <he...@kv...>
   Cc: Gim...@li...

   On Mon, Apr 24, 2000 at 06:56:30AM -0000, Karl Heinz Kremer wrote:
   > a different set of parameters. This makes it possible to have one queue
   > for line art on normal paper, one for photos on glossy paper, and so on.

   This assumes that every user of the plugin (that is every gimp
   user) is also a system administrator. That is not the case
   in reality so I'm not sure if everyone will like this.

The right thing to do is to allow the user to define his own
profiles.  Each profile should allow you to choose:

* Type of printer
* Print to file vs. to printer
* Printer command (which we should be able to default in a reasonable
  way)
* Every additional setting available.

-- 
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] Epson 740

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

   Date: Mon, 24 Apr 2000 19:54:27 +0200
   From: Frank van Maarseveen <F.v...@in...>

   I'm trying gimp 1.0.4 + print-3.1.3 on a RedHat 6.1 box for
   this printer. This doesn't look good. I have tried various
   settings in the file->print menu but at best the color dithering
   was much worse than with ghostscript: I tried versions 5.10 and 6.01, both
   with .upp files for the Epson 740 which I got from another place.

What kind of image did you try to print?  How do other people feel
about the 740?

   And even the uniprint driver in ghostscript dithers less good
   than the Epson supplied Windows drivers (a friend tried it for
   me because I don't have Windows9~).

   After experimenting a while I noticed that the print output
   of gimp is not reproducable: as if something is really going wrong.
   Suddenly the white background turned into black (lots of ink...).
   When the same picture is printed to a file multiple times the
   output tends to shrink in size:

   -rw-r--r--   1 fvm      sec        267562 Apr 24 19:04 720hq-postcard
   -rw-r--r--   1 fvm      sec        224692 Apr 24 19:05 720hq-postcard2
   -rw-r--r--   1 fvm      sec        181367 Apr 24 19:06 720hq-postcard3
   -rw-r--r--   1 fvm      sec        145868 Apr 24 19:08 720hq-postcard4
   After restarting gimp:
   -rw-r--r--   1 fvm      sec        690102 Apr 24 19:43 720hq-postcard5
   -rw-r--r--   1 fvm      sec        561821 Apr 24 19:45 720hq-postcard6
   -rw-r--r--   1 fvm      sec        470567 Apr 24 19:46 720hq-postcard7
   -rw-r--r--   1 fvm      sec        392459 Apr 24 19:47 720hq-postcard8
   -rw-r--r--   1 fvm      sec        331625 Apr 24 19:47 720hq-postcard9
   -rw-r--r--   1 fvm      sec        281019 Apr 24 19:48 720hq-postcard10

   Settings in file->print menu:
   printer:	Epson Stylus Color 740
   Media size:	postcard
   Ink type:	single dot size
   Resolution	720 DPI High Quality

Now this is really bizarre.  It's as though the image itself is
getting smashed somehow?  Can anyone else experiment with Gimp 1.0.4
and report back?

[Gimp-print-devel] Test Image

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

Somebody asked for a test image the other day. If you have access
to a Mac unstuff program (or a Linux version) check out the
PhotoDisk test target at ftp://ftp.photodisc.com/pub/test_targets/

The TIFF image is huge (almost 50MB) and it contains some stuff
that Gimp does not understand (e.g. the Adobe RGB ICM profile).=20

The small jpg image is on my web site:
http://home.rochester.rr.com/specht/test

Please read the README file, it contains licensing information.

Karl Heinz
--=20
Karl Heinz Kremer                                      kh...@kh...
                                                http://www.khk.net

Re: [Gimp-print-devel] stylus 660, gs 6.01

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

   Date: Mon, 24 Apr 2000 16:04:48 +0200
   From: Hrafnkell Eiriksson <he...@kv...>

   On Mon, Apr 24, 2000 at 08:24:24AM -0400, Robert L Krawitz wrote:
   > What I suggest doing for now, if you want to play with it, is to find
   > the lines in print-dither.c that set d->k_upper and d->k_lower.
   > They're currently .4 and .7.  Try changing them to .3 and .5 and see
   > if things improve somewhat.  Those control the points at which black
   > ink is substituted for CMYK.

   That reduced it a bit but not enough. I'll play a little bit more with these
   parameters and report back.

   The places I see to much ink being used look like the areas you
   get when you quantize an image too hard.

The transition between CMY and K really isn't being done entirely
correctly.  I haven't yet figured out anything better, and this is
much better than 3.1.2.

Re: [Gimp-print-devel] stylus 660, gs 6.01 and ink refill kits

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

I don't know when they will release the new docs. About three weeks
ago they told me "in about two weeks"... I'll announce the arrival
to the list (you can check out what's currently available, Robert
posted the address of the web server today - or was it yesterday?)


Karl Heinz

On Mon, Apr 24, 2000 at 10:21:50PM +0200, Hrafnkell Eiriksson wrote:
> On Sun, Apr 23, 2000 at 01:34:18PM -0400, Karl Heinz Kremer wrote:
> > Yes, we have a pretty good relationship with EPSON. They are preparing
> > to release a new batch of documents. I don't have any information about
> > the x60 series, but I now that docs for the 870/1270 are comming.
>=20
> Do you know when they will be released? Can you tell them that
> I would be interested in getting documentation for the 660 printer?
> =20
> Thanks
>   Hrafnkell
>=20
> --=20
> //-----------------------//----------------------------------------------=
---
> //  Hrafnkell Eiriksson  //=20
> //  he...@kv...        //=20
> //  TF3HR                //  "Blessed are they who go around in circles,
> //                       //   for they shall be known as Wheels"       =
=20
>=20
> _______________________________________________
> Gimp-print-devel mailing list
> Gim...@li...
> http://lists.sourceforge.net/mailman/listinfo/gimp-print-devel

--=20
Karl Heinz Kremer                                      kh...@kh...
                                                http://www.khk.net

Re: [Gimp-print-devel] stylus 660, gs 6.01 and ink refill kits

[Hrafnkell E. <he...@kv...>]

On Sun, Apr 23, 2000 at 01:34:18PM -0400, Karl Heinz Kremer wrote:
> Yes, we have a pretty good relationship with EPSON. They are preparing
> to release a new batch of documents. I don't have any information about
> the x60 series, but I now that docs for the 870/1270 are comming.

Do you know when they will be released? Can you tell them that
I would be interested in getting documentation for the 660 printer?
 
Thanks
  Hrafnkell

-- 
//-----------------------//-------------------------------------------------
//  Hrafnkell Eiriksson  // 
//  he...@kv...        // 
//  TF3HR                //  "Blessed are they who go around in circles,
//                       //   for they shall be known as Wheels"        

Re: [Gimp-print-devel] stylus 660, gs 6.01

[Hrafnkell E. <he...@kv...>]

On Mon, Apr 24, 2000 at 06:56:30AM -0000, Karl Heinz Kremer wrote:
> a different set of parameters. This makes it possible to have one queue
> for line art on normal paper, one for photos on glossy paper, and so on.

This assumes that every user of the plugin (that is every gimp
user) is also a system administrator. That is not the case
in reality so I'm not sure if everyone will like this.

-- 
//-----------------------//-------------------------------------------------
//  Hrafnkell Eiriksson  // 
//  he...@kv...        // 
//  TF3HR                //  "Blessed are they who go around in circles,
//                       //   for they shall be known as Wheels"        

[Gimp-print-devel] Epson 740

[Frank v. M. <F.v...@in...>]

I'm trying gimp 1.0.4 + print-3.1.3 on a RedHat 6.1 box for
this printer. This doesn't look good. I have tried various
settings in the file->print menu but at best the color dithering
was much worse than with ghostscript: I tried versions 5.10 and 6.01, both
with .upp files for the Epson 740 which I got from another place.

And even the uniprint driver in ghostscript dithers less good
than the Epson supplied Windows drivers (a friend tried it for
me because I don't have Windows9~).

After experimenting a while I noticed that the print output
of gimp is not reproducable: as if something is really going wrong.
Suddenly the white background turned into black (lots of ink...).
When the same picture is printed to a file multiple times the
output tends to shrink in size:

-rw-r--r--   1 fvm      sec        267562 Apr 24 19:04 720hq-postcard
-rw-r--r--   1 fvm      sec        224692 Apr 24 19:05 720hq-postcard2
-rw-r--r--   1 fvm      sec        181367 Apr 24 19:06 720hq-postcard3
-rw-r--r--   1 fvm      sec        145868 Apr 24 19:08 720hq-postcard4
After restarting gimp:
-rw-r--r--   1 fvm      sec        690102 Apr 24 19:43 720hq-postcard5
-rw-r--r--   1 fvm      sec        561821 Apr 24 19:45 720hq-postcard6
-rw-r--r--   1 fvm      sec        470567 Apr 24 19:46 720hq-postcard7
-rw-r--r--   1 fvm      sec        392459 Apr 24 19:47 720hq-postcard8
-rw-r--r--   1 fvm      sec        331625 Apr 24 19:47 720hq-postcard9
-rw-r--r--   1 fvm      sec        281019 Apr 24 19:48 720hq-postcard10

Settings in file->print menu:
printer:	Epson Stylus Color 740
Media size:	postcard
Ink type:	single dot size
Resolution	720 DPI High Quality

-- 
Frank

Re: [Gimp-print-devel] stylus 660, gs 6.01

[Hrafnkell E. <he...@kv...>]

On Mon, Apr 24, 2000 at 08:24:24AM -0400, Robert L Krawitz wrote:
> What I suggest doing for now, if you want to play with it, is to find
> the lines in print-dither.c that set d->k_upper and d->k_lower.
> They're currently .4 and .7.  Try changing them to .3 and .5 and see
> if things improve somewhat.  Those control the points at which black
> ink is substituted for CMYK.

That reduced it a bit but not enough. I'll play a little bit more with these
parameters and report back.

The places I see to much ink being used look like the areas you
get when you quantize an image too hard.

-- 
//-----------------------//-------------------------------------------------
//  Hrafnkell Eiriksson  // 
//  he...@kv...        // 
//  TF3HR                //  "Blessed are they who go around in circles,
//                       //   for they shall be known as Wheels"        

Re: [Gimp-print-devel] stylus 660, gs 6.01

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

   Date: Mon, 24 Apr 2000 14:15:49 +0200
   From: Hrafnkell Eiriksson <he...@kv...>
   Cc: gim...@so...

   On Mon, Apr 24, 2000 at 08:05:46AM -0400, Robert L Krawitz wrote:
   > I know how to tune the amount of black ink, if that's the problem.
   Yes it seems to be the amount of black ink.
   I wish I had a scanner to scan in the printouts and show you.
   Will you commit a change to the CVS code or should i fiddle with
   some parameters?

What I suggest doing for now, if you want to play with it, is to find
the lines in print-dither.c that set d->k_upper and d->k_lower.
They're currently .4 and .7.  Try changing them to .3 and .5 and see
if things improve somewhat.  Those control the points at which black
ink is substituted for CMYK.

   > Off by about 1/2 inch, right?

   uhm no, I placed an image in the top left corner and when I printed it
   was on the center of the page to the right. Now I tried to put it 
   on the bottom of the page and it ended up just above center and
   printed most of the image outside the paper.

Hm.  That sounds like something more serious is wrong.

   Btw. what does the density parameter control?

It should control only the amount of ink put down, not any of the
ratios.  The default of 1.0 doesn't really mean that; it's actually
multiplied by something else (I think about .6 for Epson printers),
and at 1440x720 it's halved again.

-- 
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] stylus 660, gs 6.01

[Hrafnkell E. <he...@kv...>]

On Mon, Apr 24, 2000 at 08:05:46AM -0400, Robert L Krawitz wrote:
> I know how to tune the amount of black ink, if that's the problem.
Yes it seems to be the amount of black ink.
I wish I had a scanner to scan in the printouts and show you.
Will you commit a change to the CVS code or should i fiddle with
some parameters?

> Off by about 1/2 inch, right?

uhm no, I placed an image in the top left corner and when I printed it
was on the center of the page to the right. Now I tried to put it 
on the bottom of the page and it ended up just above center and
printed most of the image outside the paper.

Btw. what does the density parameter control?

-- 
//-----------------------//-------------------------------------------------
//  Hrafnkell Eiriksson  // 
//  he...@kv...        // 
//  TF3HR                //  "Blessed are they who go around in circles,
//                       //   for they shall be known as Wheels"        

Re: [Gimp-print-devel] stylus 660, gs 6.01

[Hrafnkell E. <he...@kv...>]

On Mon, Apr 24, 2000 at 06:56:30AM -0000, Karl Heinz Kremer wrote:
> The plugin stores the settings with your print queue, so the next time
> you select the same queue again your old settings will be restored.

Ok but it does not seem to work with print to file. Even if I click
on save settings it has no effect.

> PS: How's the chocolate level in your blood? 

The blood level in my chocolate you mean? :)
Today is recovery day, school starts again tomorrow.

-- 
//-----------------------//-------------------------------------------------
//  Hrafnkell Eiriksson  // 
//  he...@kv...        // 
//  TF3HR                //  "Blessed are they who go around in circles,
//                       //   for they shall be known as Wheels"        

Re: [Gimp-print-devel] stylus 660, gs 6.01

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

   Date: Mon, 24 Apr 2000 13:10:27 +0200
   From: Hrafnkell Eiriksson <he...@kv...>

   I just tried again with random Floyd Steinberg using
   brightness=80, contrast=100,rgb=(100,100,100),
   saturation=1.0, density=1.0, gamma=1.0
   and it looked much better than yesterday.
   The only problems were too much ink used in dark regions
   and not so beutiful dithering.

I know how to tune the amount of black ink, if that's the problem.
Now that I've fixed the dark/light ink ratio, maybe it won't speckle
as badly.

   Hint to the guy that writes the GUI code: If you select f.ex. papersize
   or printer driver (setup button) and then select an new printer
   you loose all the values you've selected and have to go through
   everything again. Minor, but annoying, detail.

As Karl explained, that's an intentional feature.  In order for it to
really work well, though, we need the ability to define virtual
printers, such that the choice of a "printer" in the main dialog is
really the choice of a printer profile.

   There also doesn't allways seem to be much correspondance between
   where on the paper you place the image in the gui and where it gets
   placed on paper.

Off by about 1/2 inch, right?

Re: [Gimp-print-devel] stylus 660, gs 6.01

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

Hrafnkell Eiriksson <he...@kv...> said: 
[ ... ]
> Hint to the guy that writes the GUI code: If you select f.ex. papersize
> or printer driver (setup button) and then select an new printer
> you loose all the values you\'ve selected and have to go through
> everything again. Minor, but annoying, detail.
> 

This is actually a good feature, once you understand how it works. It
annoyed the crap out of me when I first started to use different 
print queues, but once I figured out what it does it's very useful:
The plugin stores the settings with your print queue, so the next time
you select the same queue again your old settings will be restored.
Automagically. You could have more than one queue connected to a physical
printer and whenever you select one of these queues you will get
a different set of parameters. This makes it possible to have one queue
for line art on normal paper, one for photos on glossy paper, and so on.

When I start the plugin the first thing I do is to select the print queue
I want the plugin to use. After that all my settings are applied and I 
don't have to care about this anymore.

Karl Heinz

PS: How's the chocolate level in your blood? 

Re: [Gimp-print-devel] stylus 660, gs 6.01

[Hrafnkell E. <he...@kv...>]

Hi

On Sun, Apr 23, 2000 at 06:47:51PM -0400, Robert L Krawitz wrote:
>    Hmm I just checked.. this effect is even worse when using ordinary
>    floyd steinberg with 720dpi microweave. 
>    Now it looks like an edge-detect filter is
>    used on the image first, then the edges are shifted from their
>    correct place and added to the image and then it is printed.
>    The printout is also very bright (brightness setting 100 in 
>    adjust color).
> 
> What's the density and gamma set to?

I just used the default settings for everything.
It might just have been that there are no default values: )

I just tried again with random Floyd Steinberg using
brightness=80, contrast=100,rgb=(100,100,100),
saturation=1.0, density=1.0, gamma=1.0
and it looked much better than yesterday.
The only problems were too much ink used in dark regions
and not so beutiful dithering.

Hint to the guy that writes the GUI code: If you select f.ex. papersize
or printer driver (setup button) and then select an new printer
you loose all the values you've selected and have to go through
everything again. Minor, but annoying, detail.

There also doesn't allways seem to be much correspondance between
where on the paper you place the image in the gui and where it gets
placed on paper.

Thanks
  Hrafnkell
-- 
//-----------------------//-------------------------------------------------
//  Hrafnkell Eiriksson  // 
//  he...@kv...        // 
//  TF3HR                //  "Blessed are they who go around in circles,
//                       //   for they shall be known as Wheels"        

[Gimp-print-devel] Stylus Photo stuff

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

I recalibrated the transfer function for the Photo EX (and the Photo
700 and Photo, and hopefully for the 1200 and 750 as well).  This
should improve saturation and gray fidelity.  You'll definitely want
higher brightness settings; things will appear quite a bit darker
now.  Things will also probably appear less yellow.

For the people who care about the details, I changed the conversion
factor between dark and light ink from 2:1 to 4:1 for both cyan and
magenta.  The effect is that one dark dot is equal to four light dots
in the calculations, and in general more cyan and magenta are printed.

The old transfer function gave a noticeably sharp transition region
between the two inks.  The new one is much better.

Re: [Gimp-print-devel] 1440x720 Microweave Problems

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

   Date: Sun, 23 Apr 2000 21:02:30 -0400
   From: Karl Heinz Kremer <kh...@kh...>

   It's not just the penguin that's missing it's legs... I run some
   tests with the 1440x720 microweave mode. You can see the results
   at http://home.rochester.rr.com/specht/test=20
   The first one (micro1.jpg) was done with a software version=20
   that was a couple of days old, the second one (micro2.jpg) is=20
   with today's software.

Remind me -- how well does 1440x720 softweave do?  I can't find
micro1.jpg or micro2.jpg on your site, BTW, only stc740.png

-- 
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] 1440x720 Microweave Problems

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

It's not just the penguin that's missing it's legs... I run some
tests with the 1440x720 microweave mode. You can see the results
at http://home.rochester.rr.com/specht/test=20
The first one (micro1.jpg) was done with a software version=20
that was a couple of days old, the second one (micro2.jpg) is=20
with today's software.

Micro1.jpg: This shows the difference between softweave and
microweave. I don't remember which dithering method I used
for this.

Micro2.jpg: Here I've done two prints with Hybrid F/S and
ordered dithering. The first one starts out similar to the
one in micro1.jpg, but then there is gap, teh second one
is really weird.=20

These tests were as usual done on my stc740.=20

Karl Heinz

--=20
Karl Heinz Kremer                                      kh...@kh...
                                                http://www.khk.net

[Gimp-print-devel] GhostScript driver

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

Is there anyone who would like to take over development and
maintenance of the GhostScript driver portion of the plugin?

-- 
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