A printing member for electrostatic photocopying, comprises a substrate having a conductive surface and a photoelectric-sensitive, electrically chargeable layer deposited on the conductive surface of the substrate. The electrically chargeable layer has a non-single crystal semiconductor layer having...http://www.google.es/patents/US4418132?utm_source=gb-gplus-sharePatente US4418132 - Member for electrostatic photocopying with Si.sub.3 N.sub.4-x (0<x<4)
Member for electrostatic photocopying with Si.sub.3 N.sub.4-x (0<x<4)
