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US 6,183,921 B2Granted
Crack-resistant and curl free multilayer electrophotographic imaging member
AssigneeXerox Corporation
InventorsRobert C. U. Yu, William W. Limburg, Merlin E. Scharfe, David H. Pan, Dale S. Renfer, Richard L. Schank, Surendar Jeyadev
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Abstract
A crack resistant, curl-free electrophotographic imaging member includes a charge transport layer comprising an active charge transporting polymeric tetraaryl-substituted biphenyidiamine and a plasticizer.
Claims15
An electrophotographic imaging member comprising a supporting substrate;
- a charge generating layer;
- and a charge transport layer,
- said supporting substrate being (1) electrically non-conductive and adjacent an electrically conductive ground plane, wherein said ground plane is between the supporting substrate and the charge generating layer, or (2) electrically conductive,
- said charge generating layer comprising a polymer binder and a benzimidazole perylene charge generating material, and
- said charge transport layer consisting of an active charge transport polymer and 0.2 to 50 percent by weight of a plasticizer based on the total weight of the charge transport layer, wherein the active charge transport polymer is a polymeric tetraryl-substituted biphenyldiamine, said polymeric tetraaryl-substituted biphenyldiamine being a polymer of:
- and wherein the plasticizer is an ester of the structure:
- wherein each of R1 and R2 is a linear or branched alkyl group represented respectively by CmH2m+1 and CnH2n+1 wherein m and n are integers of from 1 to 15 or each of R1 and R2 is a cyclic group represented respectively by CxH2x−1 and CyH2y−1, wherein x and y are integers between 3 and 8.
4 more elements
An electrophotographic imaging member comprising a supporting substrate;
- a charge generating layer;
- and a charge transport layer,
- said supporting substrate being (1) electrically non-conductive and adjacent an electrically conductive ground plane, wherein said ground plane is between the supporting substrate and the charge generating layer, or (2) electrically conductive, and
- said charge transport layer comprising an active charge transport polymer and a plasticizer, wherein the active charge transport polymer is a polymeric tetraaryl-substituted biphenyldiamine, said polymeric tetraaryl-substituted biphenyldiamine being a polymer of:
- and wherein the plasticizer is an ester of the structure:
- wherein each of R1 and R2 is a linear or branched alkyl group represented respectively by CmH2n+1 and CnH2n+1 wherein m and n are integers of from 1 to 15 or each of R1 and R2 is a cyclic group represented respectively by CxH2x−1 and CyH2y−1, wherein x and y are integers between 3 and 8.
3 more elements
Dependencies are inferred from the claim text.