Electroconductive member for electrophotography, process cartridge, and electrophotographic image-forming apparatus
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United States of America Patent
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Sep 13, 2016
Grant Date -
Jun 2, 2016
app pub date -
Nov 18, 2015
filing date -
Nov 28, 2014
priority date (Note) -
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Abstract
Provided is an electroconductive member for electrophotography which is suppressed in adhesion of a contaminant to a surface thereof. The electroconductive member for electrophotography includes, in this order, an electroconductive support, an electroconductive elastic layer, and a surface layer. The surface layer contains a binder resin and electroconductive fine particles having a number average particle diameter of 5.0 nm or more and 50.0 nm or less. At least part of the electroconductive fine particles are exposed from the surface layer. The surface layer has, on a surface thereof, protruded portions derived from exposed portions of the electroconductive fine particles. The surface layer has a volume resistivity of 1.0×1010 Ωcm or more and 1.0×1016 Ωcm or less and a universal hardness at a depth of 1 μm from the surface thereof of 1.0 N/mm2 or more and 7.0 N/mm2 or less.
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