Image forming apparatus with reversely rotated developer bearing members
US7177573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2004 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Nov 30, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0806
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus including an image bearing member bearing latent images; a developing unit including plural developing devices developing the latent images with developers to form visual images, each developing device including a developer bearing member bearing the developer to develop the latent image, and a developer thickness controlling member contacting the developer bearing member to control the thickness of a developer layer on the developer bearing member; and a driving device including at least one driving source, a forward rotation driving member rotated by the driving source to drive the developer bearing members to forwardly rotate to develop the latent images, and a reverse rotation driving member rotated by the driving source to drive the developer bearing members to reversely rotate when the developing operation is not performed, wherein the forward rotation driving member and the reverse rotation driving member can operate at the same time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.