Digital BW, The Print

What you have done is profile the luminance axis of the printer.  ABW is
normally a same as source workflow which means the image's file values are
sent unaltered to the Epson driver.  You have profiled what happens when
these unaltered values are received and are now using PS colour management
to alter the sent file values in consideration of what the printer does when
it receives value x or y.  So the colour management system alters the file
value to achieve a more desirous output value (subject to black point
compensation and white point compensation).  You have not doubled up on CM.
Hope this helps.


> From: bwbonkers <PeterDLevis@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Tue, 02 Aug 2005 20:56:13 -0000
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: [Digital BW] QTR ICC Profile + R2400 ABW
> 
> I have just created my own grey icc profile using Roy's program. I then
> used this instead of Same as Source in PS, with ABW mode. The result is
> a better print. Excellent !! However I do not really understand why
> this works. Using the grey icc profile in PS and ABW mode means your
> using colour managment in PS and the driver - double profiling. Could
> some kind sole explain how this works.
> 
> Many thanks.
> 
> Peter.