Electrophotographic photosensitive element comprising a protective layer with a porous surface impregnated with lubricant
US5204202A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 16, 1990 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Mar 16, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/14704
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic photosensitive element, e.g. for a photocopier or laser printer, comprises a substrate and a plurality of layers on the substrate including a photoconductive layer of a-Si:H and a protective and lubricating layer which is outermost from said substrate. To provide wear resistance and long life-time of the protective and lubricating layer, this layer comprises a microporous solid material having a pore structure which extends substantially over the whole thickness of the material and a hydrophobic lubricant carried by said solid material. The lubricant includes a liquid film and often times a non-particulate solid film, and provides at least part of the outer surface of the element and is present also in the pores of said microporous solid material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.