Electrophotographic photosensitive member, process cartridge, and image forming apparatus
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United States of America Patent
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Nov 7, 2017
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app pub date -
Feb 5, 2016
filing date -
Aug 19, 2015
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Abstract
An electrophotographic photosensitive member includes a conductive base and a single-layer-type photosensitive layer on the conductive base. The photosensitive layer contains a binder resin, a charge generation material, a hole transport material, a fluorine-atom-containing electron transport material, and fluorine-atom-containing resin particles. An amount of the charge generation material in the photosensitive layer is 0.5% by weight or more and less than 2.0% by weight. The charge generation material has a distribution that satisfies Formula (1): 30≦a/b in a thickness direction of the photosensitive layer where a and b are as defined in the specification, and b may be 0. The fluorine-atom-containing electron transport material has a distribution that satisfies Formula (2): 30≦c/d in the thickness direction of the photosensitive layer where c and d are as defined in the specification, and d may be 0.
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