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