QTR-Quadtone RIP

remononaz1 <homershannon@...> wrote:

> **
>
>
> ...
> Once the RGB-ICC is generated do you apply a curve to the image and then
> print with the ICC or just take the un-altered B&W image and print it with
> the ICC?
>
>
The ICC both applies the curves you've embedded as well as the
linearization curve.  So, you just print with a GS image file.  I recommend
16 bit Tiff.  The image, as I understand the process, goes into the ICC as
16 bit (if RGB it's apparently converted to GS and then, presumably,
re-converted back to RGB), the curves within the ICC are applied in high
bit mode, and the output is 24 bit RGB to the Epson driver.  As long as the
PS curve you've embedded has it's R, G, and B curves as distinct,
non-identical curves, the original 16 bit image data, I would think, is
fairly well preserved in the final 24 bit pipeline.

(Of course, the printer dithering probably wipes out quite a bit of
information, but at least you know you're going to that stage with as much
as possible.)

Paul
www.PaulRoark.com


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