Electrophotographic photosensitive member, process cartridge, and image forming apparatus
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United States of America Patent
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Nov 28, 2017
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app pub date -
Jun 28, 2016
filing date -
Jun 30, 2015
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Abstract
An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer contains at least a charge generating material, a hole transport material, and a binder resin. The hole transport material is a compound represented by the following general formula (1). The binder resin is a resin represented by the following general formula (2). In general formula (1), R1 and R3 each independently represent an alkyl group, an aryl group, an aralkyl group, or an alkoxy group; and R2 and R4 each independently represent an alkyl group, or an alkoxy group. In general formula (2), R23, R24, and R25 each independently represent a hydrogen atom, or a C1-4 alkyl group, at least one of R23, R24, and R25 representing a C1-4 alkyl group; p+q=1.00, and 0.35≦p<1.00; and n represents 2 or 3.
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