Electrophotosensitive member having an overcoat layer and a process for preparing the same
First Claim
1. In an electrophotosensitive member which comprises;
- an electrically conductive substrate,a photosensitive layer formed on said substrate,and an overcoat layer formed on said photosensitive layer,the improvement wherein said overcoat layer has a rough surface having convexities and concavities with a maximum depth difference of about 0.05 to about 1.5 μ
m in an amount of about 500 to about 3000 per 1 cm in linear distance.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is an electrophotosensitive member and its preparing method. The electrophotosensitive member comprises an electrically conductive substrate, a photosensitive layer, and an overcoat layer having a rough surface with convexities and concavities. The number of convexities and concavities are about 500 to 3000 per 1 cm in a linear distance, and the maximum depth difference of the convexities and concavities is about 0.05 to 1.5 μm. The rough surface having the convexities and concavities is formed directly on the overcoat layer. The electrophotosensitive member according to the present invention reduces the friction coefficient of the contacting area between the electrophotosensitive member and a cleaning device, and improves the durability of the overcoat layer and the photosensitive layer.
28 Citations
8 Claims
-
1. In an electrophotosensitive member which comprises;
-
an electrically conductive substrate, a photosensitive layer formed on said substrate, and an overcoat layer formed on said photosensitive layer, the improvement wherein said overcoat layer has a rough surface having convexities and concavities with a maximum depth difference of about 0.05 to about 1.5 μ
m in an amount of about 500 to about 3000 per 1 cm in linear distance. - View Dependent Claims (2, 3, 4)
-
-
5. A process for preparing an electrophotosensitive member which comprises;
- an electrically conductive substrate, a photosensitive layer formed on said substrate, and an overcoat layer formed on said photosensitive layer comprising;
a first step of coating a photoconductive material on said substrate to form said photosensitive layer; a second step of evaporating an inorganic material in a vacuum to form said overcoat layer on said photosensitive layer; and a third step of heating said support coated with said photosensitive layer and said overcoat layer under a predetermined temperature to form a rough surface on said overcoat layer having convexities and concavities with a maximum depth difference of about 0.05 to about 1.5 μ
m in an amount of about 500 to about 3000 per 1 cm in a linear distance. - View Dependent Claims (6, 7, 8)
- an electrically conductive substrate, a photosensitive layer formed on said substrate, and an overcoat layer formed on said photosensitive layer comprising;
Specification