Browse Prior Art Database

FIXING METHOD AND DEVICE

IP.com Disclosure Number: IPCOM000023256D
Original Publication Date: 1977-Apr-30
Included in the Prior Art Database: 2004-Mar-29
Document File: 2 page(s) / 343K

Publishing Venue

Xerox Disclosure Journal

Abstract

Polymer fluids having oxidizable side chains are used on fusing devices in photocopiers to fix particulate thermoplas-tic toner to a substrate while the toner is in a fused state. Typical polymers are the polysiloxanes having oxidizable alkyl side chains, for example, polymethylalkylsiloxane and poly-arylalkysiloxane. Preferred fusing devices are bare metal rolls of iron, copper, aluminum, zinc and the like. The fuser member comprises a solid substrate; a release layer of the polymer fluid which has at least one oxidizable alkyl group per molecule and interacts with the solid substrate, and an interfacial layer which prevents toner from contacting the solid substrate, the interfacial layer being formed by the interaction of the solid substrate and the oxidizable alkyl group of the polymer, fluid.

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XEROX DISCLOSURE JOURNAL

FIXING METHOD AND DEVICE
ProposedArthur C. Martellock Classification

U.S. Cl. 148/6
Int. Cl. C23f 7/00

Polymer fluids having oxidizable side chains are used on
fusing devices in photocopiers to fix particulate thermoplas-
tic toner to a substrate while the toner is in a fused state.
Typical polymers are the polysiloxanes having oxidizable alkyl
side chains, for example, polymethylalkylsiloxane and poly-
arylalkysiloxane. Preferred fusing devices are bare metal
rolls of iron, copper, aluminum, zinc and the like. The fuser
member comprises a solid substrate; a release layer of the
polymer fluid which has at least one oxidizable alkyl group
per molecule and interacts with the solid substrate, and an
interfacial layer which prevents toner from contacting the
solid substrate, the interfacial layer being formed by the
interaction of the solid substrate and the oxidizable alkyl
group of the polymer, fluid.

The drawing illustrates a preferred fusing device having fuser
assembly 1, backup roll 8 and sump 20. Heated roll 2 includes
hollow cylinder 4 having a suitable heating element 6 disposed
therein. Backup roll 8 cooperates with roll 2 to form a nip 10
through which copy paper 12 passes such that toner images 14
thereon contact heated roll 2 and fuse. Backup roll 8 com-
prises a rigid steel core 16 having an elastorner layer 18

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6

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Volume 2 Number 2 March/April 1977 37

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FIXING METHOD AND DEV: C...