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NOVEL PHOTOCONDUCTIVE WATERLESS LITHOGRAPHIC PRINTING MASTERS, AND PROCESS OF PREPARATION

IP.com Disclosure Number: IPCOM000022811D
Original Publication Date: 1976-Feb-29
Included in the Prior Art Database: 2004-Mar-26
Document File: 2 page(s) / 188K

Publishing Venue

Xerox Disclosure Journal

Abstract

It has been difficult to adhere particulate imaging materials to silicone elastomers useful in waterless lithographic printing because the non-adhesive property of the silicone which renders it useful for rejecting lithographic inks, also causes it to reject other materials~

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XEROX DISCLOSURE JOURNAL

NOVEL PHOTOCONDUCTIVE Proposed Classification
WATERLESS LITHOGRAPHIC U~S~Cl~96/27
PRINTING MASTERS, AND PROCESS Into Ci. G03c 5/04

OF PREPARATION

Richard G~ Crystal

It has been difficult to adhere particulate imaging
materials to silicone elastomers useful in waterless
lithographic printing because the non-adhesive property
of the silicone which renders it useful for rejecting
lithographic inks, also causes it to reject other materials~

This problem of adhering a particulate imaging material
to a silicone waterless lithographic printing master has
been obviated by a process comprising placing a hetero~
geneous copolymer containing an abhesive species and an

imaging material adhesive species in a solvent, pre-
ferentially dissolving one of said species wherein the
nonsoluble species forms micelles, dispersing a photo-
conductive pigment in the resultant solution, coating the
resultant suspension on a suitable master substrate and
allowing the solvent to evaporate whereby the soluble
species forms the matrix in which the pigment is dispersed.

Volume 1 Number 2 February 1976 13

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14 XEROX DISCLOSURE JOURNAL

Volume 1 Number 2 February 1976

[This page contains 1 picture or other non-text object]