Roughened imaging surface for cleaning

Claim 1

A method for making a photoconductive member with an imaging surface with improved cleaning blade cleanability comprising the steps of: providing a smooth conductive substrate, etching said substrate surface to form a surface on said substrate having substantially all of the substrate surface substantially uniformly and continuously covered with a first surface roughness pattern of recesses in the substrate surface averaging 3 to 5 microns in lateral dimensions and averaging 1 to 2 microns in depth and a substantially lesser amount as compared to the surface covered by said first surface roughness pattern but greater than zero of the substrate covered with a second surface roughness pattern, said second surface roughness pattern having recesses in the substrate surface of about 10 to 20 microns in lateral dimensions and averaging 1 to 2 microns in depth, and then uniformly overcoating said substrate with a thin uniform layer of photoconductive material which conforms to the substrate surface to form said imaging surface, to cause, a reduction in friction between said cleaning blade and said imaging surface without adversely affecting image reproduction.

Claim 2

A method for making a photoconductive member with an imaging surface with improved cleaning blade cleanability comprising the steps of: providing a smooth conductive substrate, etching said substrate surface to form a surface on said substrate having substantially all of the substrate surface substantially uniformly and continuously covered with a first surface roughness pattern of recesses in the substrate surface averaging 3 to 5 microns in lateral dimensions and averaging 1 to 2 microns in depth and a substantially lesser amount as compared to the surface covered by said first surface roughness pattern but greater than zero of the substrate covered with a second surface roughness pattern, said second surface roughness pattern having recesses in the substrate surface of about 10 to 20 microns in lateral dimensions and averaging 1 to 2 microns in depth, and then uniformly overcoating said substrate with a thin uniform layer of photoconductive material which conforms to the substrate surface to form said imaging surface, to cause, a reduction in friction between said cleaning blade and said imaging surface without adversely affecting image reproduction.