Electrophotographic image forming apparatus, electrophotographic image forming system, and process cartridge
US6201935A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1999 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Aug 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1892
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic image forming apparatus onto which a process cartridge is detachably mountable, for forming an image on a recording medium, has (a) a mounting member for detachably mounting a process cartridge having an electrophotographic photosensitive member, a charging member for charging the electrophotographic photosensitive member, a cartridge charge bias contact for receiving a charging bias to be impressed on the charging member from the main body of the apparatus when the process cartridge is mounted on the main body of the apparatus, and a cartridge-earth contact for connecting the electrophotographic photosensitive member to ground with the main body of the apparatus when the process cartridge is mounted on the main body of the apparatus, (b) a main-body-charge bias contact to be electrically connected to the cartridge-charge-bias contact when the process cartridge is mounted on the mounting member, (c) a main-body earth contact to be electrically connected to the cartridge-earth contact when the process cartridge is mounted on the mounting member, (d) a detecting member for detecting that the process cartridge is not mounted in a cartridge-mounting position by d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.