William:
The best place to start is to open one of Paul Roark's RGB
partitioned curves for the hextone VM inkset and your printer (see
the Quad workflow pages at MIS, www.inksupply.com for curves and
workflows) . Check out the individual R, G, and B curves with your
photoeditor's curves tool. The R curve controls the C position inks,
G the M position inks and B the Y position ink. Tweak the curves to
get a smooth stepwedge and ramp on your printer. You can do this
visually, scanning the stepwedge portion of the test print with a
flatbed scanner and checking the positions of the peaks with the
histogram feature of your photoeditor, or directly measuring each
step patch with a densitometer, colorimeter, or spectophotometer.
Good Luck.
Jeff Randall
--- In DigitalBlackandWhiteThePrint@y..., william oldacre <me@w...>
wrote:
> Hi all,
>
> I've looked in the forum briefly and I'm not finding anything that
> indicates a method for writing curves. Could anybody point me in
the right
> direction or brief me on the method for writing curves.
>
> Do you need to isolate each of the 6 inks and figure out the
crossover
Show quoted textHide quoted text
> points or what exactly?
>
> Thanks
> William
>
> Best regards
>
> William Oldacre
>
> me@w...
> 698 Queen Street East
> Toronto, Ontario M4M 1G9
> Canada
>
> www.wfomixedmedia.com/portfolio
>
> studio (416) 405-9929
> fax (416) 778-6200