Process cartridge and multi-color image forming apparatus using same
US4924267A · kind A · utility
53Cited by
6References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Jul 12, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1861
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus usable with a process cartridge detachably mountable thereto. The process cartridge includes a main cartridge containing a photosensitive member and process means as a unit. A subordinate process cartridge is detachably mountable to the main cartridge. The subordinate cartridge includes at least a developing device which is different from the developing device contained in the main cartridge so that a multi-color image can be formed if desired. The photosensitive member is used both for the main process cartridge and the subordinate cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.