Electrophotographic photosensitive member, process cartridge using same and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKouichi Nakata, Toshihiro Kikuchi, Akihiro Senoo, Tetsuro Kanemaru
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Abstract
An electrophotographic photosensitive member is constituted by disposing a photosensitive layer on an electroconductive support. The photosensitive layer is characterized by containing an arylamine compound having specific two fluorenyl groups. The photosensitive member is suitable for providing an electrophotographic apparatus showing excellent electrophotographic characteristics such as a high photosensitivity, a good potential stability in repetitive use, a decreased pause memory, and no crack in the photosensitive layer.
Claims7
An electrophotographic photosensitive member, comprising:
- an electroconductive support and a photosensitive layer disposed on the electroconductive support, wherein
- said photosensitive layer contains an arylamine compound represented by the following formula (I) ##STR8## wherein Ar denotes substituted or unsubstituted aryl group or substituted or unsubstituted heterocyclic group;
- R.sub.1 and R.sub.2 independently denote substituted or unsubstituted alkyl group, substituted or unsubstituted aralkyl group, or substituted or unsubstituted aryl group, R.sub.1 and R.sub.2 being capable of forming a ring by connection thereof;
- and R.sub.3 and R.sub.4 independently denote hydrogen atom, halogen atom, substituted or unsubstituted alkyl group, substituted or unsubstituted alkoxy group, or substituted or unsubstituted aryl group.
Dependencies are inferred from the claim text.