Electrophotographic photoreceptors having reduced torque and improved mechanical robustness
AssigneeXerox Corporation
InventorsTimothy P. Bender, Nan-Xing Hu, Michael E. Zak
Life of this patent
Estimating the term…
Abstract
Backing layers, which may be useful for reducing torque in electrophotographic photoreceptors, are provided. The backing layers, which may be anti-curl backing layers, include a polymer matrix having a particulate inorganic lubricant and a particulate fluoropolymer uniformly dispersed therein. Also provided are electrophotographic photoreceptors that include a substrate and the backing layers, electrophotographic imaging apparatuses that include such photoreceptors, and methods for forming the photoreceptors.
Claims28
A backing layer for electrophotographic imaging members, comprising:
- a polymer matrix;
- a particulate inorganic lubricant;
- and
- a particulate fluoropolymer;
- wherein said particulate inorganic lubricant is selected from the group consisting of boron nitride, graphite, molybdenum sulfide, and mixtures thereof;
- wherein said particulate inorganic lubricant comprises a plurality of particles ranging in size of from about 0.05 to about 0.5 μm;
- and
- wherein the particulate inorganic lubricant and the particulate fluoropolymer are uniformly dispersed throughout the matrix.
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An electrophotographic imaging member comprising:
- an optional overcoat layer,
- a charge-generating layer,
- a charge-transporting layer,
- a substrate, and
- a backing layer;
- wherein said backing layer comprises:
- a polymer matrix;
- a particulate inorganic lubricant;
- and
- a particulate fluoropolymer;
- wherein said particulate inorganic lubricant is selected from the group consisting of boron nitride, graphite, molybdenum sulfide, and mixtures thereof;
- wherein said particulate inorganic lubricant comprises a plurality of particles ranging in size of from about 0.05 to about 0.5 μm;
- and
- wherein the particulate inorganic lubricant and the particulate fluoropolymer are uniformly dispersed throughout the matrix.
(canceled)
(canceled)
An electrophotographic imaging apparatus comprising:
- an electrophotographic imaging member;
- wherein said electrophotographic imaging member comprises:
- an optional overcoat layer,
- a charge-generating layer,
- a charge-transporting layer,
- a substrate, and
- a backing layer;
- wherein said backing layer comprises:
- a polymer matrix;
- a particulate inorganic lubricant;
- and
- a particulate fluoropolymer;
- wherein said particulate inorganic lubricant is selected from the group consisting of boron nitride, graphite, molybdenum sulfide, and mixtures thereof;
- wherein said particulate inorganic lubricant comprises a plurality of particles ranging in size of from about 0.05 to about 0.5 μm;
- and
- wherein the particulate inorganic lubricant and the particulate fluoropolymer are uniformly dispersed throughout the matrix.
Dependencies are inferred from the claim text.