Charging member, method of producing the same, process cartridge, and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTaichi Sato, Tomohito Taniguchi, Takehiko Aoyama
Life of this patent
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Abstract
The present invention directs to provide a charging member having a protrusion to which smear is difficult to adhere even in a long-term used, and as a result being capable of exhibiting stable charging performance. The charging member has an electro-conductive substrate and an electro-conductive surface layer, wherein the surface layer includes a binder resin and a resin particle including a plurality of electro-conductive domains inside thereof, the surface layer has a protrusion derived from the resin particle, and the electro-conductive domains are localized in the vicinity of the surface of the resin particle.
Claims9
A charging member comprising:
- an electro-conductive substrate and
- an electro-conductive surface layer,
- wherein:
- the surface layer comprises
- a matrix including a binder resin and an electro-conductive fine particle, and
- a resin particle dispersed in the matrix,
- the charging member has a protrusion derived from the resin particle on a surface thereof,
- the resin particle includes a plurality of electro-conductive domains inside thereof, and
- the electro-conductive domains are localized in the vicinity of the surface of the resin particle.
Dependencies are inferred from the claim text.