Developing cartridge and process cartridge having first and second projected portions and image forming apparatus mounting such a developing cartridge
US6983115B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2003 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Oct 17, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1884
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The apparatus includes: a frame; a developing device for developing an electrostatic latent image formed on an electrophotographic photosensitive member; a first projected portion engaging a first positioning portion provided in the main assembly of the apparatus when the cartridge is mounted to the main assembly to position the cartridge; a second projected portion engaging a second positioning portion provided in the main assembly when the cartridge is mounted to the main assembly to regulate rotation of the cartridge about the first positioning portion; and a cartridge guide member contacting a main assembly guide portion to guide the cartridge when the cartridge is mounted to the main assembly. The second projected portion is urged in a direction to contact the second positioning portion when the cartridge is set in the main assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.