Color electrophotographic image forming apparatus including a rotary drive transmission mechanism
US7933538B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2008 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Apr 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/163
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color electrophotographic image forming apparatus includes a rotary to support and move developing devices to a development position without an independent driving motor for rotating the rotary. A number V of developing devices supported by the rotary are sequentially moved to and stopped at the development position in which the developing device faces a photosensitive drum. A drive transmission mechanism is provided in which each time one of a number M of claw portions of a trigger cam is disengaged from and engaged with a solenoid, the trigger cam makes a 1/M revolution, and once every 1/M revolution of the trigger cam, a driving force is transmitted to a rotary gear from a rotary drive gear which is rotated integrally with the trigger cam so that the rotary is stopped after being rotated by an angle W which is an aliquot part of (360°/N).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.