[Openicc] LINUX, Gutenprint / CUPS / Color policies

[Jan-Peter Homann]

Hello Robert, hello List
Even if I not understand every detail about the CUPS discussion, there 
are some points, which are very important for building a transparent 
color-infrastructure.

First point is, where is the colortransformtion from document-colorspace 
to printer-colorspace done.

In strongly recommend to do this in the printer-driver and not in the 
application, in the RIP or in CUPS. This should be part of the 
printer-driver.

Second point is, where are the profiles for the printing process 
(printer-type, medium, driver-settings) are specified.

This should be part of the printer-driver and not CUPS !!!

The whole discussion about profiles in CUPS makes only sense, if we use 
CUPS for the colortransformation from document-colorspace to 
printer-colorspace because the printer-driver is dumb in the field of 
colormanagement.

If our goal is transparent colormanagement for printing, we have to 
discuss the colorpolicy for
1. appplication
2. RIP
3. CUPS
4. printer-driver

If a standard-installtion of all this 4 software-part gives the 
possibility of profile-configuration and inetraction of color-settings, 
this is total chaos from the view of the user.

If we want transparency I would recommend following GUI:
1. colortransformation from individual objects to the 
document-colorspace in the application
2. No profile configuration in RIP and CUPS
3. Path-through of the document-colorspace to the printer-driver
4. Colortransformtion from document-colorspace->printer-colorspace in 
the printerdriver.



Robert L Krawitz schrieb:
>    Date: Wed, 13 Apr 2005 13:26:37 +0200
>    From: Jan-Peter Homann <homann at colormanagement.de>
> 
>    Reading the dicussion about Gutenprint, CUPS and ICC-profiles I´m still 
>    confused, even if I´m a colormanagement specialist.
> 
> That's because this discussion has moved away from color management
> per se, and is covering issues of interactions between the spooler and
> color management.
> 


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