Patent ID: 8158316
Filing Date: 2012-04-17
Classification: G03G

Abstract:
1. An electrophotographic photoreceptor comprising an electrically conductive substrate, an organic photosensitive layer and a surface layer laminated in this order, the surface layer comprising at least gallium (Ga), oxygen (O), and hydrogen (H) as constituent elements thereof, and having a thickness of 0.2 μm to 1.5 μm, and a microhardness of 2 GPa to 15 GPa wherein in the surface layer, the sum of the respective elemental composition ratios of gallium (Ga) and oxygen (O) to all the elements constituting the surface layer is 0.70 or more, and the elemental composition ratio of oxygen (O) to gallium (Ga) (oxygen/gallium) is from 1.1 to 1.5.