Yahoo Groups archive

QTR-Quadtone RIP

Index last updated: 2026-04-28 23:12 UTC

Message

Question re: characterizing inks/paper before making a new curve

2006-01-27 by Dave

Hi all,

I finally got around to reading the User Guide written by Tom Moore 
and decided to go through the exercise of characterizing the 
ink/paper I use (Epson ink/Red River paper) and I have a question 
about evaluating the Calibration test page. What exactly am I 
looking for when I evaluate that page? When I look at the steps on 
each color with a 15x loop, I'm not sure I can see the difference 
between one step and the next even though I can see the differences 
in "darkness" of the steps. Am I looking or remnants of white 
showing through the ink, or something else? If I look for remnants 
of white, I get quite a range of levels at which the ink max's out. 
Most are between 75 and 80%, but the yellow is way down around 35-
40% and the black and blue are closer to 55-65%.

Any guidance?

thanks,
Dave

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.