Operation and performance of amorphous selenium-based photoreceptors

This paper presents a general description of the xero-graphic photoreceptor and its role in the imaging process. The photoreceptor is described in terms of two properties, the photoinduced charge-generation efficiency and the charge transport through the bulk of the material. The relationships between these fundamental photoreceptor properties and the final electrostatic imaging system are presented for three chalcogenide glasses, Se and As
2
Se
3
, which are practical selenium-based photoreceptors, and As
2
S
3
, a sulfur-based glass. As
2
S
3
is not a practical xerographic material, but a description of its properties is useful for comparison with the Se-based materials.