Re: [Gimp-print-devel] More stuff

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

   Date: Fri, 05 May 2000 10:56:06 +0200
   From: Ron van Ostayen <R.A...@Wb...>

   Robert L Krawitz wrote:

   The latest version I got from the repository has a value of 0.999.
   And yes, this works!!  Black images and text are printed in one
   pass like with the windows driver.

   I assume this will improve other resolution printout as well?

It did the right thing in my tests.

   > I know.  I've partially optimized it, but not completely.  That
   > shouldn't be all that hard to get right.  It's possible that what
   > looks empty isn't entirely, but it's possible to figure that out from
   > the print file, if what I eventually do to fix it doesn't solve the
   > problem.

   This seems to have been fixed also.
   So it would seem that the 360dpi mode achieves the same printing speed
   as the windows driver.
   Now all that remains is to improve the dithering speed :-).

It turned out to be very easy to get it right for microweave.  For
softweave, when I stared at it, it was trivial.  As for the dithering
speed, I need to profile it again some time and take a closer look at
what's going on.

   >    The quality of in particular the windows text is much better than the
   >    gimp-print output.  Figures and photos are comparable.
   > 
   > What's the difference (more specifically)?

   Well, I have studied a scan of the output and actually the
   difference isn't that bad.  It's just that the windows driver uses
   more ink.  More black, more color.  Which settings should I change
   to get this result?

For now, try bumping up the density to 1.1 or 1.2 and see if that
helps.  It may be that the current density setting is slightly too
low, or that we should have a separate density setting for black ink.
If 1.1 is good enough, try 1.05.  I want to cut this fairly close.
1.1 put noticeably too much ink on my paper.

-- 
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