QTR-Quadtone RIP

Thank you Tom, Eric & Costa for helping me with the ink limit 
calibration. With your collective help I got over the initial  hurdle 
of curve making and produced my first acceptable QTR Profile. This is a 
beginning for me and I have much to learn. You got me off in the right 
direction and I am very appreciative.

Howard

On Aug 2, 2005, at 12:34 PM, Tom Moore wrote:

> 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
>  >
>
>  ...
>
>
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Howard Steinberg
1585 Cordova Drive
San Luis Obispo, CA 93405
(805) 543-1392