Press Profiling Question
Press Profiling Question
- Subject: Press Profiling Question
- From: Busher Jr Richard C <email@hidden>
- Date: Mon, 16 May 2005 09:40:53 -0700
I have been giving thought to the possibility of profiling a 4-color
offset printing press. I've noted that the GRACoL standards for solid
densities refer to measurements made when the press sheet is dry (I
suspect that SWOP and other standards have the same requirements).
However, in practice, one cannot wait until the sheet is dry to decide
if the proper densities have been obtained during the testing
procedure.
The question then is what fudge factor does one use for dry down
changes in cmyk ink densities? Would you use a percentage of the
measured wet densities of each color? Or would you use a fixed amount
regardless of the measured wet densities of each color?
My goal would be to start the process at some industry industry
standard (e.g. 175 lpi screens, #1 coated sheet, GRACoL ink densities
and dot gain) and progress to stochastic screens, with elevated ink
densities.
Dick Busher
Cosgrove Editions
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