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HEAT SHRINKAGE OF PHOTORECEPTOR BELT ONTO A DRUM

IP.com Disclosure Number: IPCOM000027092D
Original Publication Date: 1995-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 81K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a belt photoreceptor and drum configuration where the belt is heat shrunk to hug the drum surface. Since the belt is used as a sleeve around a rigid drum, the inner circumference of the belt is made about 0.2% larger than the outer circumference of the drum to facilitate slipping of the belt onto the drum. The belt and drum are then heated at for example about 135 degrees for a time ranging for instance from about 30 seconds to about 5 minutes to cause circumferential belt shrinkage, whereby the belt tightly hugs the drum. A preferred heating time ranges from about 30 seconds to about 1 minute. The drum may be fabricated from any suitable material including for instance a metal like aluminum. The belt preferably is a laminate structure organic photoreceptor comprising for example, a substrate, a ground plane, a blocking layer, a charge generating layer, a charge transport layer, and any other suitable layers such as an anticurling layer. It is preferred that the substrate of the belt is a material such as polyethylene terephthalate which is a biaxially oriented material having an inherent characteristic of dimensional contraction when subjected to heat treatment. Preferably, the charge generating layer includes benzimidazole perylene.

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XEROX DISCLOSURE JOURNAL

HEAT SHRINKAGE OF Proposed Classification PHOTORECEPTOR BELT ONTO A
DRUM Int. C1. G03g 5/00 Robert C.U. Yu

U.S. C1.355/211

Disclosed is a belt photoreceptor and drum configuration where the belt is heat shrunk to hug the drum surface. Since the belt is used as a sleeve around a rigid drum, the inner circumference of the belt is made about 0.2% larger than the outer circumference of the drum to facilitate slipping of the belt onto the drum. The belt and drum are then heated at for example about 135 degrees for a time ranging for instance from about 30 seconds to about 5 minutes to cause circumferential belt shrinkage, whereby the belt tightly hugs the drum. A preferred heating time ranges from about 30 seconds to about 1 minute. The drum may be fabricated from any suitable material including for instance a metal like aluminum. The belt preferably is a laminate structure organic photoreceptor comprising for example, a substrate, a ground plane, a blocking layer, a charge generating layer, a charge transport layer, and any other suitable layers such as an anticurling layer. It is preferred that the substrate of the belt is a material such as polyethylene terephthalate which is a biaxially oriented material having an inherent characteristic of dimensional contraction when subjected to heat treatment. Preferably, the charge generating layer includes benzimidazole perylene.

If an increase in the contact friction is desired between the belt and...