GRACol Paper classification
GRACol Paper classification
- Subject: GRACol Paper classification
- From: Clark Steve <email@hidden>
- Date: Mon, 15 Dec 2008 17:28:38 -0800
I'm looking at a sheet called GRACol 2007 Print Characterization
Charts. There are columns for the paper type with rows for Screen
Ruling, TAC, Lab paper white, Lab for the primaries, and on down to
suggested SID and TVI etc. The column labeled "Premium text & cover"
puzzles me. It suggests possibly dropping the ruling to 150 lpi and a
TAC of 260% and considerably low SIDs. Is this for uncoated papers?
The word Premium is throwing me a little, but the TAC seems right for
uncoated.
A bigger question is how does one relate actual paper brands to these
columns, i.e. Where does Topkote Gloss fit in there, or Matrix Matte,
Endeavour Velvet, McKoy Silk???. Do the manufacturers supply any
information that lets you classify their papers to specific types with
respect to GRACol or ISO?
The reason this has become important to me is our pressroom has
started running their densities down. I discuss this chart and suggest
higher densities. They immediately point out that they are not running
number 1 or 2 sheets so the next column is this Premium test & cover
category with densities of 1.30, 1.15,1.15,.90.
Thanks for any and all information.
Clark
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