Electrophotographic photosensitive member, process cartridge, and image forming apparatus
AssigneeKYOCERA Document Solutions Inc.
InventorsTomofumi Shimizu, Kazuaki Ezure, Hayase Yamamoto, Jun Azuma
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Abstract
A photosensitive layer included in an electrophotographic photosensitive member contains at least a charge generating material, a hole transport material, and a binder resin. The hole transport material includes a compound (1). The binder resin includes a polyarylate resin having at least one repeating unit (10) and at least one repeating unit (11). Alternatively, the binder resin includes a polycarbonate resin having a repeating unit (20) and a repeating unit (21). The general formulas (1), (10), (11), (20), and (21) are as follows
Claims13
An electrophotographic photosensitive member comprising:
- a conductive substrate;
- and
- a photosensitive layer of a single layer, wherein
- the photosensitive layer includes at least a charge generating material, a hole transport material, a binder resin, and an electron transport material,
- the hole transport material includes a compound represented by a general formula (1), and
- the binder resin includes a polyarylate resin represented by a chemical formula (R-1) or (R-2)
- where in the general formula (1),
- R1 and R2 each represent, independently of each other, a hydrogen atom, a methyl group, or an ethyl group, and a sum of the carbon number of a group represented by R1 and the carbon number of a group represented by R2 is 2, and
- R3 and R4 each represent, independently of each other, a hydrogen atom, a methyl group, or an ethyl group, and the sum of the carbon number of a group represented by R3 and the carbon number of a group represented by R4 is 2,
Dependencies are inferred from the claim text.