Browse Prior Art Database

Xerographic Photoconductor

IP.com Disclosure Number: IPCOM000120236D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 22K

Publishing Venue

IBM

Related People

Baldwin, TP: AUTHOR [+4]

Abstract

The fatigue parameter of organic xerographic photoconductors is improved by using a polyester resin (brand PE-200 by Goodyear Tire & Rubber Co.) having at least 47 equivalents of carboxyl groups per million grams of the polyester sample.

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Xerographic Photoconductor

      The fatigue parameter of organic xerographic
photoconductors is improved by using a polyester resin (brand PE-200
by Goodyear Tire & Rubber Co.) having at least 47 equivalents of
carboxyl groups per million grams of the polyester sample.

      The organic photoconductor described in U.S. Patent 4,150,987
includes a hydrazone charge transport layer (CTL). Polyester resin is
used in this photoconductor's CTL along with the photosensitive
molecule DEH.

      The amount of carboxyl end groups present in this polyester
polymer (as expressed in number of equivalents per million grams of
sample) is critical to control the fatigue parameter of this
photoconductor's CTL.  More specifically, the polyester must have a
carboxyl number higher than 47. Samples of carboxyl content 48.2 to
71.9 have been found to be satisfactory.