Electrophotographic photoreceptor containing uniform and nonuniform charge transporting layers
First Claim
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1. An electrophotographic photoreceptor comprising an electrically conductive substrate having thereon a charge-generating layer and a charge-transporting layer, wherein said charge-transporting layer comprises:
- a nonuniform charge-transporting layer comprising an electrically inactive matrix and a charge-transporting domain dispersed in the matrix; and
a uniform charge-transporting layer comprising a charge-transporting matrix,wherein the charge-transporting domain in the nonuniform charge-transporting layer has an average grain diameter of from 0.005 to 0.5 μ
m.
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Abstract
An electrophotographic photoreceptor comprising an electrically conductive substrate having thereon a charge-generating layer and a charge-transporting layer, wherein the charge-transporting layer comprises: a nonuniform charge-transporting layer comprising an electrically inactive matrix and a charge-transporting domain dispersed in the matrix; and the uniform charge-transporting layer comprising a charge-transporting matrix.
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Citations
19 Claims
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1. An electrophotographic photoreceptor comprising an electrically conductive substrate having thereon a charge-generating layer and a charge-transporting layer, wherein said charge-transporting layer comprises:
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a nonuniform charge-transporting layer comprising an electrically inactive matrix and a charge-transporting domain dispersed in the matrix; and
a uniform charge-transporting layer comprising a charge-transporting matrix,wherein the charge-transporting domain in the nonuniform charge-transporting layer has an average grain diameter of from 0.005 to 0.5 μ
m. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An electrophotographic photoreceptor comprising an electrically conductive substrate having thereon a charge-generating layer and a charge-transporting layer, wherein said charge-transporting layer comprises:
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a nonuniform charge-transporting layer comprising an electrically inactive matrix and a charge-transporting domain dispersed in the matrix; and
a uniform charge-transporting layer comprising a charge-transporting matrix,wherein said uniform charge-transporting layer, said nonuniform charge-transporting layer and said charge-generating layer are laminated on said electrically conductive substrate in this order.
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19. An electrophotographic photoreceptor comprising an electrically conductive substrate having thereon a charge-generating layer and a charge-transporting layer, wherein said charge-transporting layer comprises:
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a nonuniform charge-transporting layer comprising an electrically inactive matrix and a charge-transporting domain dispersed in the matrix; and
a uniform charge-transportiny layer comprising a charge-transporting matrix,wherein said nonuniform charge-transporting layer comprises block or graft copolymer comprising a charge-transporting block and an electrically inactive insulating block, and said block or graft copolymer has undergone microphase separation to have a sea-island structure having a sea portion formed by said insulating block and island portions formed by said charge-transporting block.
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Specification