Re: [Gimp-print-devel] 3.2 or 4.0 Release criteria

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

   Date: Thu, 04 May 2000 22:04:21 +0200 (CEST)
   From: regis rampnoux <re...@re...>

   On 03-May-00 Robert L Krawitz wrote:

   > No, what UNIX command to use to send the file to the printer..

   Users like me can put it in the configuration file.

If you know what it is.  You shouldn't have to know.

   > Well, I don't understand how that works.  The printer doesn't know
   > what kind of ink cartridge is in the printer; if you try to send
   > something to the printer, presumably something will create the color
   > separations and send each color to the printer.  Without something or
   > other to tell it, how will the driver know that "yellow" is really
   > some percent gray?  Surely you have to tell it somehow that you're
   > trying to print a black and white picture using special inks, rather
   > than a color picture using color inks (or a black and white picture
   > using color inks), no?

   No, I only put the gray cartridge, I chose UCR separation, correct
   the saturation. and select "color ink".  The driver do separations
   in CYMK and add the two extras layers for the ligth cyan and
   magenta.  Choice of UCR should be better than GGR, but I don't
   tried the two on the same picture.

What is UCR separation?  Why would you correct the saturation for
printing black and white, which has no saturation?

Basically, what it sounds like is that the architecture of the Windows
driver is simply different from ours.

   When you print a grayscale picture in color mode do you use only
   black ink, or all colors inks and black ink? The difference beetwen
   UCR and GCR is that in UCR the black ink is used only for the dark
   grays.

Mixture of color & black.  At low levels it's all color; in the dark
midtones and darker black starts to mix in.

-- 
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