International Business Machines Corporation

Lexmark International, Inc.

Dean S Ehn

Robert L Vollmer

Lance A Walker

Reid W Gunnell

Vernon M Balthis

Lawrence P Dempsey

Jacob Pacansky

James M Adley

Bruce P Reinhardt

Ralph F Fox

Robert J Waltman

A layered electrophotographic photoconductor is disclosed having a ground plane layer, a charge generating layer carried by the ground plane layer, and a charge transport layer carried by the charge generating layer. The polymeric binder material of the charge transport layer and the charge generation layer comprises an ordered copolyestercarbonate whose ester content is in the range of about 35 wt. % to about 70 wt. %, of which about 60 wt. % to about 70 wt. % is preferred, and of which about 70 wt. % is the most preferred. The charge generating molecule is a squarylium, and more specifically 2,4-bis-(4-dimethylamino-2-hydroxyphenyl) cyclobutene diylium-1,3-diolate (OHSQ), or an operative phthalocyanine compound, and preferably oxytitanium phthalocyanine. The charge transporting molecule is a hydrazone, and more specifically 4-diethylaminobenzaldehyde-1,1-diphenylhydrazone (DEH), or 4-diphenylaminobenzaldehyde-1,1-diphenylhydrazone (TPH).

Electrophotographic photoconductor contains ordered copolyester

An electrophotographic fuser roll includes a hard external surface having low surface energy and high abrasion resistance. This surface is formed by sequentially coating a metal roll with two layers of a polymeric material. The polymeric material is not cured until after the second layer is applied. Once the material is cured, it is subjected to a polishing step that also generates heats. In this way, the roll's surface is both polished and heat treated.

Hot roll fuser and method of making a fuser roll

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Boulder, CO, United States of America

Dean S Ehn