Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

ALLOYS FOR BARE METAL FUSER MEMBERS

IP.com Disclosure Number: IPCOM000023878D
Original Publication Date: 1979-Apr-30
Included in the Prior Art Database: 2004-Apr-01
Document File: 2 page(s) / 455K

Publishing Venue

Xerox Disclosure Journal

Abstract

This disclosure relates generally to members utilized for pressure-fusing toners at elevated temperatures and more particularly, to a roll which will prevent off-setting of toner onto the roll during the fusing operation. Bare metal fuser members and the method of fusing toner images with bare metal fuser members are well known in the prior art. Generally, bare metal fuser members utilize a reactive release agent. Such fuser members and reactive release agents therefore are described in U.S. Patents 4,011,362, 4,029,827, 4,078,285 and 4,101,686. In U.S. Patent 4,078,285, there are disclosed fuser members having hard, abrasion-resistant, bare metal alloy surfaces which are chemically reactive and include cylindrical rolls having at least an outer surface of a chemically reactive copper alloy.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 51% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

ALLOYS FOR BARE METAL FUSER MEMBERS Proposed Classification Donald A. Seanor U.S. CL 29/132
joseph A. Swift mt. Cl. B21b 31/08

This disclosure relates generally to members utilized for pressure-fusing toners at elevated temperatures and more particularly, to a roll which will prevent off- setting of toner onto the roll during the fusing operation. Bare metal fuser members and the method of fusing toner images with bare metal fuser members are well known in the prior art. Generally, bare metal fuser members utilize a reactive release agent. Such fuser members and reactive release agents therefore are described in U.S. Patents 4,011,362, 4,029,827, 4,078,285 and 4,101,686. In U.S. Patent 4,078,285, there are disclosed fuser members having hard, abrasion- resistant, bare metal alloy surfaces which are chemically reactive and include cylindrical rolls having at least an outer surface of a chemically reactive copper alloy.

In accordance with the present disclosure, a hard metal alloy such as beryl- lium/copper is deposited upon or over a substrate or core material such as copper or aluminum. The hard outer alloy covers the periphery of the fuser member, and because of its hardness, the outer alloy material is less prone to damage or scratching. The core material is generally selected from cheaper metals which have excellent thermal conductivity, The present configuration is especially preferred in those fuser modes where the heat is supplied by means located in the core of the fuser member. In those modes where maximum thermal conductivity is required in the fuser member, the base element of the fuser member, that is the core, is preferably made of a material which has high thermal conductivity such as copper, aluminum and the like. In these modes, a sheath of metal alloy is placed over the base member to provide a surface of the metal alloy. The sheath or outer metal alloy surface can be applied in any suitable manner.

The outer metal alloy surface can be applied by co-extrusion wherein the shell material is co-extruded in a tubular form over a core material. In this fabrica...