[Openicc] Printing Plans... Testcharts

[Jan-Peter Homann]

Hello all,
In the commercial inkjet arena, i observe, that Screening, calibration 
and profiling is most often divided from the PDF / PS RIP process.

If we use such approach in an CUPS envirronment, we would have e.g. a 
utility for printing
charts like e.g.
1) per channel ink limit
2) per channel calibration
3) profiling
directly interacting with Gutenprint and ArgyllCMS.
We should also take in consideration, that printing step 2) needs to 
apply 1 (per channel ink limit) and printing the profiling testchart 
needs applying of of 1 and 2.

I don´t think, that such printing, calibration and profiling tasks 
should be handled through the complete CUPS chain.
Using a utility directly interacting with the driver like e.g. 
Gutenprint will be much more transparent and failure proof.
At the end, we have a driver setting with an assigned ICC profile, which 
will than be communicated through cupsICCprofile to XXXtoRaster as a 
target profile.

What are the tghought of the others ?

best regards
Jan-Peter

>> thats DeviceCMYK
>
> Yes, there are ways of doing this in PS and PDF, but it would help
> a lot if there was a convention about how the RIP it attached to
> the printer, so that a reliable test chart could be produced
> for these different calibration and profiling cases. Ideally
> the end user shouldn't have to change anything about the printer
> config, they should just say "print" and the different types
> of test charts should be processed appropriately, because they
> are marked appropriately.
> (In the Colorbus RIP we used a very simple and crude mechanism -
>  a "magic keyword" in the PS comments at the top of the file).
>
> Graeme Gill.
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