Electrophotographic member, process cartridge and electrophotographic apparatus
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United States of America Patent
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Jan 5, 2021
Grant Date -
Oct 3, 2019
app pub date -
Mar 27, 2019
filing date -
Mar 30, 2018
priority date (Note) -
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Abstract
The electrophotographic member includes an electro-conductive substrate, a urethane resin having a structure of structural formula (1), an anion, and a resin particle, and has a protrusion derived from the resin particle on an outer surface thereof, the resin particle contains one or both of a urethane resin and a polyamide resin, the resin layer further contains carbon black, and the carbon black extracted from the resin layer has a BET specific surface area of 33 m2/g or more and 133 m2/g or less, and DBP absorption amount at a 70% torque value in DBP absorption measurement of 42 ml/100 g or more and 90 ml/100 g or less.
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