DEVELOPING MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS
First Claim
1. A developing member comprising a substrate and a surface layer,the surface layer containing alumina particles and a resin,the developing member having protrusions on the surface thereof,each of the protrusions containing the alumina particles,part or all of the alumina particles contained in each of the protrusions being exposed at a surface of each of the protrusions, andthe resin being interposed among the alumina particles contained in each of the protrusions.
1 Assignment
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Accused Products
Abstract
The present disclosure provides developing member superior in triboelectric charge imparting ability to a toner. The developing member includes a substrate and a surface layer, the surface layer containing alumina particles and a resin, the surface layer having protrusions on the surface thereof. Each of the protrusions containing the alumina particles, part or all of the alumina particles being exposed at the surfaces of the protrusions, and the resin being interposed among the alumina particles.
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Citations
9 Claims
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1. A developing member comprising a substrate and a surface layer,
the surface layer containing alumina particles and a resin, the developing member having protrusions on the surface thereof, each of the protrusions containing the alumina particles, part or all of the alumina particles contained in each of the protrusions being exposed at a surface of each of the protrusions, and the resin being interposed among the alumina particles contained in each of the protrusions.
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8. An electrophotographic process cartridge detachably mountable on a main body of an electrophotographic apparatus
comprising a developing member, wherein the developing member includes a substrate and a surface layer, the surface layer contains alumina particles and a resin, the developing member has a plurality of protrusions on a surface of the developing member, each of the protrusions contains a plurality of the alumina particles, part or all of the plurality of the alumina particles contained in each of the protrusions is exposed at a surface of each of the protrusions, and the resin is interposed among the plurality of the alumina particles contained in each of the protrusions.
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9. An electrophotographic image forming apparatus, comprising:
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an image carrier for carrying an electrostatic latent image, a charging apparatus for primarily charging the image carrier, an exposing apparatus for forming an electrostatic latent image on the image carrier primarily charged, a developing member for developing the electrostatic latent image with a toner to form a toner image, and a transfer apparatus for transferring the toner image onto a transfer material, wherein the developing member includes a substrate and a surface layer, the surface layer contains alumina particles and a resin, the developing member has protrusions on a surface thereof, each of the protrusions contains the alumina particles, part or all of the alumina particles contained in each of the protrusions is exposed at a surface of each of the protrusions, and the resin is interposed among the alumina particles contained in each of the protrusions.
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Specification