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VAPOR CURE OF SILICONE POLYMER TO PREPARE WATERLESS XEROLITHOGRAPHIC PLATES

IP.com Disclosure Number: IPCOM000022977D
Original Publication Date: 1976-May-31
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 184K

Publishing Venue

Xerox Disclosure Journal

Abstract

The preparation of either a toned or planographic water-S less lithographic master imaged xerographically by vapor curing of the silicone abhesive film is described. The abhesive material is coated on a suitable substrate and a xerographically formed image is transferred to the surface thereof, The entire plate is then placed into a chamber containing the vapor of a crosslinking agent known to react with the active sites present in the silicone polymer. After a sufficient reaction time, the polymer is cured to the elastomeric state and if the toner employed is sufficiently soluble in the chamber vapor, toner fusing will also take place. If fused, the toner can be left on the surface and will act as the ink receptive media while the elastomeric background polymer, being abhesive, will reject ink wetting enabling the plate to function as a lithographic master for printing use.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

VAPOR CURE OF SILICONE Proposed Classification
POLYMER TO PREPARE WATERLESS U.S. Cl. 101/1
XEROLITHOGRAPHIC PLATES mt. Cl, B41f
R. Schank

The preparation of either a toned or planographic water-S
less lithographic master imaged xerographically by vapor
curing of the silicone abhesive film is described. The
abhesive material is coated on a suitable substrate and
a xerographically formed image is transferred to the
surface thereof, The entire plate is then placed into
a chamber containing the vapor of a crosslinking agent
known to react with the active sites present in the
silicone polymer. After a sufficient reaction time,
the polymer is cured to the elastomeric state and if the
toner employed is sufficiently soluble in the chamber
vapor, toner fusing will also take place. If fused, the
toner can be left on the surface and will act as the ink
receptive media while the elastomeric background polymer,
being abhesive, will reject ink wetting enabling the plate
to function as a lithographic master for printing use.

The toner may also be removed from the plate allowing
printing to occur from the ink receptive toner imprints
in the silicone film.

Volume 1 Number 5 May 1976 23

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24 XEROX DISCLOSURE JOURNAL

Volume 1 Number 5 May 1976

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