Process cartridge, electrophotographic image forming apparatus, method of manufacturing a process cartridge, and method of remanufacturing a process cartridge
US7865115B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2006 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Nov 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1657
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge has an electrophotographic photosensitive drum, a charging roller for charging the drum, a spacer movable between a separation position for separating the roller from the drum and a contact position for contacting the roller to the drum, a rotatable receiving gear for receiving a driving force produced by rotation of the drum to move the spacer from the separation position to the contact position, and a rotatable transmission gear engaged with the receiving gear and the spacer to transmit the force from the receiving gear to the spacer to move the spacer from the separation position to the contact position, wherein play is provide in the engagement portion between the receiving gear and the transmission gear so that they can be freely rotated relative to each other by a predetermined angle, whereby the drum is not reversely rotated when the roller is separated from the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.