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NEW RELEASE COATING COMPOSITIONS AND PROCESS FOR MANDREL LINERS

IP.com Disclosure Number: IPCOM000026298D
Original Publication Date: 1991-Feb-28
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 59K

Publishing Venue

Xerox Disclosure Journal

Abstract

In a spray-coating process for preparation of photosensitive belts a metallic or plastic liner or sleeve is used to support the substrate being sprayed. A problem arises in the heat drying stage wherein the substrate shrinks and it becomes exceedingly difficult to remove the substrate from the liner without damaging either. Release agents and air-floating liners have been used to overcome the problem but with limited success. Release agents contaminate the substrate and air-float liners tend to carve structurally weakening and uneven patterns into the backside of the substrate.

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XEROX DISCLOSURE JOURNAL

NEW RELEASE COATING Proposed Classification COMPOSITIONS AND PROCESS U.S. C1.430/059
FOR MANDREL LINERS
Lieng-Huang Lee
Christine J. Tranawskyj
Leon A. Teuscher

Int. C1. G03g 05/00

In a spray-coating process for preparation of photosensitive belts a metallic or plastic liner or sleeve is used to support the substrate being sprayed. A problem arises in the heat drying stage wherein the substrate shrinks and it becomes exceedingly difficult to remove the substrate from the liner without damaging either. Release agents and air-floating liners have been used to overcome the problem but with limited success. Release agents contaminate the substrate and air-float liners tend to carve structurally weakening and uneven patterns into the backside of the substrate.

An improved coating process is realized by the application of a curable silicone based coating composition to the liner in a alcohol diluted solution. A number of curable silicones are available commercially that are well suited for this application, for example Silvue X2-7358 (available from General Electric). The curable silicone coating composition may additionally contain submicron metal oxides for example silicon dioxide, titanium oxide, antimony oxide, tin oxide, etc. to provide mechanical and thermal stability to the coating.

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 1 .January/February 1991 71

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72 XEROX DISCLOSURE J...