Digital BW, The Print

on 10/13/02 8:40 PM, DigitalBlackandWhiteThePrint@yahoogroups.com at
DigitalBlackandWhiteThePrint@yahoogroups.com wrote:

> I am curious about how the partitioned Piezography (and other RGB)
> methods deal with a true 4 color printer versus a 6 color printer.  I
> think we will find each of these printer classes require a unique
> approach to achieve the best results.  The clues are already there in
> the images from the 980 printer you have posted. But that is another
> discussion, in which I will participate more objectively.

Shilesh, 

PiezographyBW treats a 6 color printer as a 4 color printer. The cyan and
magenta position inks are doubled-up in the photo positions and the driver
alternates between the two.

The EPSON RGB driver fires the photo position inks from 254-0 while the full
strength inks fire from 128 to 0. The photo position actually stops firing
before 0 - but this gives you an idea of why its difficult to produce a good
mono process for a 6 color printer without a special driver.  It would be
easier to create a workflow if the inks crossed over and stopped.

A parser can actually trap the spool data being sent to each printer. If you
can read this type of data it is possible to understand specifically how
each new class of printer behaves.


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may your highlights be dotless
and your tonal scale smooth,


Jon Cone
jon@...
Piezography(tm) brand software and inks
http://www.piezography.com
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