G - Physics – 03 – C
Patent
G - Physics
03
C
96/235, 96/255
G03C 7/14 (2006.01) B41M 7/02 (2006.01) G03F 3/10 (2006.01) G03F 7/28 (2006.01)
Patent
CA 1154291
Title PROCESS FOR SURFACE IMPROVEMENT OF SURPRINT PROOF Abstract of the Invention Process for modifying a tacky surface of a multilayer negative-working surprint proof having a photosensitive tacky layer as the outer layer which comprises exposing the tacky layer through a halftone screen tint, e.g., having a tint value of 25 to 75 percent, and applying an admixture of particulate material and carrier particles and removing excess particulate material and the carrier particles from the tacky surface. The ratio of average particle diameter of the carrier particles to average particle diameter of the particulate material is greater than 2 and the weight ratio of particulate material to carrier particles is less than 1. A durable matte finish is obtained that is nonblocking, is capable of being written on, and is noncracking over extended storage periods.
386426
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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