A few final additions to the color copier notes , I missed a bit from Jay. He clarifies the equipment he was testing on:
The CLC was a Canon 350; the Fiery is a PostScript RIP which interfaces that to a PC. The RIP channel did not green-out the bill, the copier glass did. I have to start reading everything before I shoot off my mouth...
And, notes something I'd missed in the first discussion:
Date: Sat, 11 Dec 1999 00:36:03 -0500
From: Jay R. Ashworth
Subject: Thanks...
You can mention my name; let em come chase me.
Note too, that my assertion was that "Yes, color copiers will green-out currency.. but they do it on the input side." It greened out that one dollar bill nicely when I just copied it normally, but didn't when I printed it from the PC.
This suggests that the purported serial number patterning is happening on the scanner side.
The guy who commented about the precision optics, BTW? That's a red herring.
Every production color laser copier of which I'm aware is digital -- a scanner connected to a color laser printer. Unlike most black and white copiers, there is no optical connection between the glass and the paper.
Cheers,
-- jra
Saturday, December 11th, 1999 danlyke@flutterby.com