Process cartridge and electrophotographic apparatus
US6408152B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1999 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Apr 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/14778
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge is disclosed which includes an electrophotographic photosensitive member having a photosensitive layer and a charging means. The charging means has a charging member which is provided in contact with the electrophotographic photosensitive member to charge the photosensitive member electrostatically by applying a voltage formed by superimposing an alternating-current voltage on a direct-current voltage. The photosensitive member has a surface layer which contains at least one of a polyarylate resin having a weight-average molecular weight of 7.5×103 to 3.7×104 and having a specific structural unit of Formula (1) and a polycarbonate resin having a weight-average molecular weight of 7.5×103 to 3.7×104 and having a specific structural unit of Formula (2). The photosensitive member further contains fluorine-containing resin particles. Also, an electrophotographic apparatus having the photosensitive member is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.