QTR-Quadtone RIP

Howard

First let me say that I don't think the patch you choose is that critical -
at least it hasn't seemed to be for curves I've created. That said, there
are some who want to squeeze the last bit of density out of each ink and try
to maximize each ink's cutoff point.

Other than using your eyeball, you can use a densitometer or scanner. Print
the separation page and then measure each patch along the area where the ink
seems to be reaching its peak density. The patches increase in density near
the start (lower levels) and then gradually flatten out or drop in density
then pick a patch at or near the tip of the curve.

With respect to using different limits for each channel, you certainly can
if you wish. Again, the idea is to maximize each ink and hopefully reduce
the dots near the transition to the next most dense ink. To measure the
relative density with different limits, you must reprint the inkseparation
chart with each unique limit. Unfortunately you cannot set individual limits
for each ink when printing the inkseparation page.

Steve Kale posted a number of messages regarding separate ink limits. I'm
not sure whether it was this list or the BW Printing list.

Tom Moore

> -----Original Message-----
> From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On
> Behalf Of steinbe2003
> Sent: Tuesday, August 02, 2005 2:09 PM
> To: QuadtoneRIP@yahoogroups.com
> Subject: [QuadtoneRIP] Hardware Ink Limit Calibration
> 

...

> Can anyone suggest a more precise guideline? Also how do you choose the
> ink limit to use
> if you get widely varying results for the different ink channels?
> 
> Any suggestions will be appreciated.
> 
> Howard
> 

...