CHARGING MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS

摘要

An electrophotographic charging member in which the adhesion of contamination is more suppressed is provided. The electrophotographic charging member includes an electro-conductive support and an electro-conductive elastic layer on the electro-conductive support, the electro-conductive elastic layer includes 10% by mass or more and 50% by mass or less of an aggregate of crosslinked rubber particles, the aggregate of the crosslinked rubber particles has a circle-equivalent diameter of 10 μm or more and 50 μm or less, the crosslinked rubber particles have one of an acrylic resin and a styrene acrylic resin chemically bonded to a surface thereof, the charging member has a protrusion derived from the aggregate of the crosslinked rubber particles on a surface thereof, and the protrusion has an average height of 50 nm or more and 200 nm or less.

主权项

1. A charging member comprising:
an electro-conductive support; and an electro-conductive elastic layer on the electro-conductive support, wherein the electro-conductive elastic layer comprises 10% by mass or more and 50% by mass or less of an aggregate of crosslinked rubber particles, the aggregate of the crosslinked rubber particles has a circle-equivalent diameter of 10 μm or more and 50 μm or less, the crosslinked rubber particles have one of an acrylic resin and a styrene acrylic resin chemically bonded to a surface thereof, the charging member comprises a protrusion derived from the aggregate of the crosslinked rubber particles on a surface thereof, and the protrusion has an average height of 50 nm or more and 200 nm or less.