Patent ID: 9291923
Filing Date: 2016-03-22
CPC Classification: G03G

Claim Text:
1. An electrophotographic photoreceptor comprising: a cylindrical conductive substrate; an undercoat layer containing a cured product of a resin and a blocked isocyanate and having a degree of curing of about 1.5 or less in both a region A and a region B defined below, the degree of curing being determined from an equation below; and a photosensitive layer, wherein the undercoat layer is disposed on the cylindrical conductive substrate and the photosensitive layer is disposed on the undercoat layer, and the undercoat layer further contains an electron-accepting substance, Region A: A region that lies between a position distant from a first end of the conductive substrate by about ⅛ of a length of the conductive substrate toward a center portion in an axis direction and a position distant from the first end of the conductive substrate by ⅕ or about ⅕ of the length of the conductive substrate toward the center portion in the axis direction Region B: A region that lies between a position distant from a second end of the, conductive substrate by ⅛ or about ⅛ of the length of the conductive substrate toward the center portion in the axis direction and a position distant from the second end of the conductive substrate by ⅕ or about ⅕ of the length of the conductive substrate toward the center portion in the axis direction,