On Tuesday, March 14, 2017, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
edmund ronald wrote:
Hi Edmund,
Unless things have changed a lot, Gutenprint is unusable in CMYK modein most
distributions due to various CUPS issues.
OK.
In RGB mode, depending on the media, the user needs to choose a usabledither pattern
and establish a decent linearisation by means of the zillion programparameters; out of
the box behavior is mostly horrible and a spectro won't solve thoseissues, only hard work
gets one somewhere. Avoid if possible and use proprietary drivers unlessdriving obsolete
hardware.
Hmm. I thought the printer RGB mode handles screening itself ?
As I remember, the light/dark ink crossovers are well done; that's just
Certainly if the print driver is driving the dots, there is a lot
of setup to do, and even more magic needed if you need to
do light ink or non-CMYK colorant seperations.
(Lots of experience doing just this when I was at ColorBus,
since that's what our boxes did.)
Cheers,CUPS raster files. I had a program which converted these back and forth to
Graeme.
There is one trick which should be documented: One can use CUPS to print