Digital BW, The Print

Tom Husband wrote:
> Tyler you're right. I was so concerned about the profile I didn't even 
> notice that the image is converted to 8 bit. Way too many issues with 
> Qimage and BW printing for me to continue to fool with it. That's too 
> bad I've been a fan for years.
> 
> Thanks,
> 
> Tom

Tom,

Much of the workflow with Qimage would become easier if QTR
behaved more like a Windows printer driver. That isn't
criticism on what Roy has done. Qimage is very Windows
API/printer driver directed so another driver type makes it
more difficult. Sizes to print to, native resolution etc would
all be taken care of by Qimage if QTR was just a Windows
driver. But we are lucky for other reasons that it isn't just a
Windows driver.
.

In my PS CS1 setup I have the color management
settings/preferences for grayscale set to QTR Gray Lab and
color to AdobeRGB. No Gamma 2.2 or Dotgain 20% that you may
have in the settings and that could be interfering in the
assigning. When I convert a grayscale in QTR Gray Lab to the
printer profile QTR Gray Matte Paper the data in the grayscale
will change accordingly and the printer profile will be
assigned. That there is a printer profile assigned isn't of
importance, the data has been changed for QTR already. There's
no other color management after that done by Qimage (with CM
off) or QTR (has no CM). I believe even the RGB file that
Qimage makes (in Print to File) and that goes to QTR still has
that printer profile assigned (can't check that as it is on
the printer server that is off right now). In fact that is an
inappropriate profile for that RGB file but it doesn't matter
as no CM will work and notice it. After QTR the file is
deleted anyway.

My files are 16 bit in PS but they become 8 bit along that
path. As far as I know QTR is taking in 8 bit uses LUTs of 16
bit at some stage and sends 2-3?  bit per ink channel or
something like that.

Gutenprint is at 16 bit throughout till it splits on the channels.

                    --
           Ernst Dinkla


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