Patent ID: 9551945
Date: 2017-01-24
CPC Classifications: G03G

Claim:
1. An electrophotographic photoreceptor comprising: a conductive substrate; and a single-layer type photosensitive layer that is provided on the conductive substrate and contains a binder resin, a charge generating material, a hole transporting material, and an electron transporting material, wherein a content of the charge generating material in the photosensitive layer is 0.5% by weight or more and less than 2.0% by weight and the charge generating material satisfies the following expression (1) with respect to a distribution of the charge generating material in the film thickness direction of the photosensitive layer: wherein a represents a number of the charge generating material per unit cross-sectional area in a region ranging from a surface side of a film thickness of the photosensitive layer to a point corresponding to ⅓ of the film thickness, and b represents a number of the charge generating material per unit cross-sectional area in a region ranging from a conductive substrate side of a film thickness of the photosensitive layer to a position corresponding to ⅔ of the film thickness, provided that a case where b is 0 is also included.