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QTR-Quadtone RIP

Index last updated: 2026-04-28 23:12 UTC

Message

Re: QTR / Qimage profile problem?

2006-01-10 by smack0606

Hi Ernst,

this is really weird. I have had no problems with the icc recognition 
of Tiff files but Qimage simply refuses to read psd files. 

I use to convert the file in PS to the QTR RGB profile and save it as 
a tiff (everything colormanaged). I thought it would be the best way 
to print in QTR via Qimage in order to stay in RGB (however the print 
seems to be the same if the Qimage output profile is the QTR-RGB Gray 
or simply the QTR Gray profile).

I will check if Qimage recognizes the profile in a grayscale Tiff 
file.

Thank you and regards,

Ignacio


> Be careful with PSD files in Qimage. Stay with Tiffs. But 
> there are other things going on.
> 
> I have used converted greyscale Tiffs so far in Qimage (older 
> version) but recently I have seen strange artifacts in the 
> resulting RGB print files too (with Qimage CM off). Several 
> months ago Mike has changed the recognition of images without 
> profiles (or profiles it doesn't know, or EXIF's it can't 
> guess the profile by). So it becomes more difficult to get 
> already to printer profile converted greyscales through as 
> with CM off there are 1 step pixel changes in flat areas of 
> the resulting RGB print to file Tiff (PS does that too with CM 
> off I have seen, but Picture Window Pro doesn't with CM off) 
> and with CM on you get profile recognition problems.
> 
> I'm afraid that the Qimage route is becoming an RGB only route 
> and possibly the conversion to the printer profile has to be 
> done with Qimage too + the new QTR generated profiles. I have 
> done some greyscale testing again and it just doesn't work 
> anymore. Had no time for the RGB route right now.
> 
>                     --
>            Ernst Dinkla
> 
> 
> www.pigment-print.com
> (         unvollendet         )
>

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