Developing device
US4958191A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Mar 31, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0896
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A disconnecting mechanism or a driving force switching mechanism provided in a developing device functions so as to transmit a driving force from a driving source to a developer stirring mechanism only correlatively with a movement of each developing unit from a developer supply location adjacent to an image support member to a developer non-supply position away from the image support member. The disconnecting mechanism or the driving force switching mechanism functions so as to transmit a driving force from the driving source both to the developer stirring mechanism and a developing roll correlatively with the movement of each developing unit from the developer non-supply position to the developer supply location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.