Browse Prior Art Database

METHOD FOR COATING ROLL SURFACE

IP.com Disclosure Number: IPCOM000024334D
Original Publication Date: 1980-Apr-30
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 63K

Publishing Venue

Xerox Disclosure Journal

Abstract

This invention relates to a method for coating the surface of a roll. For example, a fuser roll in a copying machine may have a metallic core which is plated with one or more layers of various metals or alloys. Such a fuser roll may then be precoated with a release agent, for example, a mercapto-functional polysiloxane, before being incorporated into the copying machine. The mercapto-functional polysiloxane is substantially lighter in density than water and it is insoluble as well as immiscible in water. After the metallic core of the fuser roll has been plated with the various metallic layers, it is usually subjected to a series of water rinse baths. The present invention provides that in the final rinse bath, a sufficient quantity of the release agent is added to form a layer at the top of the water bath. In this manner, after the fuser roll has been rinsed in the water, the roll is drawn through the release agent layer and a coating of the release agent is thus uniformly applied to the roll surface. If desired, the roll may be dried at a temperature at which the release agent bonds to the roll surface.

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(EROX DISCLOSURE JOURNAL

METHOD FOR COATING ROLL SURFACE Proposed Joseph A. Swift Classification

U.S. C1. 427/430 Int. C1. B05d 1/18

FUSER ROLL

t

EASE AGENT

WATER RINSE

This invention relates to a method for coating the surface of a roll. For example, a fuser roll in a copying machine may have a metallic core which is plated with one or more layers of various metals or alloys. Such a fuser roll may then be precoated with a release agent, for example, a mercapto-functional polysiloxane, before being incorporated into the copying machine. The mercapto-functional polysiloxane is substantially lighter in density than water and it is insoluble as well as immiscible in water. After the metallic core of the fuser roll has been plated with the various metallic layers, it is usually subjected to a series of water rinse baths. The present invention provides that in the final rinse bath, a sufficient quantity of the release agent is added to form a layer at the top of the water bath. In this manner, after the fuser roll has been rinsed in the water, the roll is drawn through the release agent layer and a coating of the release agent is thus uniformly applied to the roll surface. If desired, the roll may be dried at a temperature at which the release agent bonds to the roll surface.

Volume 5 Number 2 March/April 1980 209

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  XEROX DISCLOSURE JOURNAL
Volume 5 Number 2 March/April 1980

[This page contains 1 pictur...