From: clay (wcharmon@wt.net)
Date: 01/27/02-09:34:00 AM Z
After Carl's comments about using LiPd in DOP, I ran a quick step wedge
comparison test yesterday of the different metal salts and their response at
the beginning of my printing session. I coated a single sheet of paper in
four masked-off areas with each of 100% NaPd, 100% CsPd, 100%LiPd and 50/50
NaPd&LiPd using straight ferric oxalate for the sensitizer with no
restrainer of any type. I put a step wedge on each coated area, exposed on a
Nuarc unit for 250 units and developed them all on the same sheet of paper
in potassium oxalate at 110 degrees. I've plotted the results of the test on
a excel spreadsheet for anyone bored or curious. Just email me off-list and
I'll send it to you. The bottom line is that the LiPd seems to have a
slightly
different speed and have a more linear response than NaPd. There also is a
very
slight color difference that is harder to see on the step wedge than on an
actual print.
Clay
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