Reusable inverse composite dual-layer organic photoconductor usi

Details Reusable inverse composite dual-layer organic photoconductor usi Reusable inverse composite dual-layer organic photoconductor usi

1994-08-08

1996-05-14

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 58, G03G 5047

Patent

active

055166105

ABSTRACT:
An inverse dual-layer organic photoconductor comprising a charge generation layer (CGL) formed on top of a charge transport layer (CTL), in turn formed on a substrate such as a web (drum) or subbing layer, is disclosed, in which the CGL includes a flexible polymer having a glass transition temperature (T.sub.g) of less than about 120.degree. C. as the binder for a charge generation species and in which the CTL includes a rigid polymer having a T.sub.g of greater than about 120.degree. C. as the binder for a charge transport species. The CTL is coated onto the substrate, using a non-chlorinated solvent. The CGL is coated onto the CTL, also using a non-chlorinated solvent, under conditions so as to form a diffused region at the boundary of the CGL and CTL. This type of photoconductor yields extremely low noise, exceptionally high-speed and excellent stable charging/discharging performance in the xerography process at room temperature and elevated temperature.

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