Electrophotographic photoreceptor, process cartridge, image forming apparatus, and image forming method

摘要

An electrophotographic photoreceptor includes a conductive substrate, a photosensitive layer, and a surface layer that is provided on the photosensitive layer. The surface layer includes a cross-linked component which is a reaction product of compound A and compound B. The compound A is at least one compound selected from guanamine compounds and melamine compounds, and the compound B is a charge-transporting material. A structure derived from at least one compound selected from the guanamine compounds and the melamine compounds included in the surface layer amounts for 0.1% by weight to 5% by weight, and a structure derived from the charge-transporting material included in the surface layer amounts for 85% by weight or greater. Surface roughness Rz of the surface layer is from 0.1 μm to 0.3 μm, and the surface has at least one compound selected from fatty acid metal salt and fluorine resin particles.

主权项

1. An electrophotographic photoreceptor comprising:
a conductive substrate; a photosensitive layer; and a surface layer that is provided on the photosensitive layer or is contained in the photosensitive layer; wherein, the surface layer includes a cross-linked component which is a reaction product of compound A and compound B, wherein the compound A is at least one compound selected from guanamine compounds and melamine compounds, and the compound B is a charge-transporting material having at least one substituent selected from —OH, —OCH3, —NH2, —SB, and —COOH, a structure derived from at least one compound selected from the guanamine compounds and the melamine compounds included in the surface layer amounts for 0.1% by weight to 5% by weight, and a structure derived from the charge-transporting material included in the surface layer amounts for 85% by weight or greater, surface roughness Rz of the surface layer is from 0.1 μm to 0.3 μm, and the surface has at least one compound selected from fatty acid metal salt and fluorine resin particles, and the electrophotographic photoreceptor satisfies the relationships represented by the following Expressions (1) and (2):
Y≦−5X+150  Expression (1)Y≧−0.75X+30  Expression (2)wherein Y represents a coverage of the fatty acid metal salt, and X represents a coverage of the fluorine resin particles.