Electro-conductive member, process cartridge and image forming apparatus
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United States of America Patent
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Nov 24, 2020
Grant Date -
Oct 1, 2020
app pub date -
Mar 25, 2020
filing date -
Mar 29, 2019
priority date (Note) -
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Abstract
Provided an electro-conductive member that can be used as a charging member capable of preventing the emergence of a ghost image. The member comprises an electro-conductive support and an electro-conductive layer, the electro-conductive layer has a matrix including a first cross-linked rubber, and domains, the domains each includes a second cross-linked rubber and an electronically conductive agent, at least some of the domains are exposed to an outer surface of the member to constitute protrusions, the outer surface is constituted by the matrix and the exposed domains, and in a double logarithmic plot with a frequency on the abscissa and an impedance on the ordinate, a slope at a frequency of 1.0×105 Hz to 1.0×106 Hz is −0.8 to −0.3, and an impedance at a frequency of 1.0×10−2 Hz to 1.0×101 Hz is 1.0×103 to 1.0×107Ω.
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