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US 5,876,887 AGranted
Charge generation layers comprising pigment mixtures
AssigneeXerox Corporation
InventorsJohn S. Chambers, Huoy-Jen Yuh, James M. Markovics, Yonn K. Rasmussen
Life of this patent
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Abstract
An electrophotographic imaging member has a support, and at least one photoconductive layer having from about 90% by weight to about 10% by weight of the photoconductive particles of a photosensitive substituted perylene pigment, and, correspondingly, from about 10% by weight to about 90% by weight of at least one other n-type photosensitive pigment that is sensitive to shorter wavelength light than is the perylene pigment.
Claims19
An electrophotographic imaging member comprising:
- (a) a support and
- (b) at least one photoconductive layer comprising photoconductive particles, wherein all of the photoconductive particles in the photoconductive layer are n-type photosensitive pigments, wherein:
- (i) from about 90% by weight to about 10% by weight of the photoconductive particles are a substituted perylene pigment, and
- (ii) from about 10% by weight to about 90% by weight of the photoconductive particles are at least one other n-type photosensitive pigment that is sensitive to shorter wavelength light than is the perylene pigment.
1 more element
An electrophotographic imaging member comprising:
- (a) a support, and
- (b) at least one photoconductive layer comprising photoconductive particles, wherein all of the photoconductive particles in the photoconductive layer are n-type photosensitive pigments, wherein:
- (i) from about 90% by weight to about 70% by weight of the photoconductive particles are benzimidazole perylene, and
- (ii) from about 10% by weight to about 30% by weight of the photoconductive particles are at least one other n-type photosensitive pigment selected from the group consisting of trigonal selenium and dibromoanthanthrone.
1 more element
An electrophotographic imaging member comprising:
- (a) a support;
- (b) a charge generating layer consisting essentially of:
- a binder, a photosensitive substituted perylene pigment, at least one other n-type photosensitive pigment and a solvent;
- and
- (c) a charge transport layer.
2 more elements
Dependencies are inferred from the claim text.