Developing device having light transmitting member for detecting amount of developer
US8208838B2 · kind B2 · utility
3Cited by
5References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2009 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Jun 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0897
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a developing device, a rotation shaft is provided with a developer feeding member, a cleaning member, and a receiving portion. The receiving portion is provided downstream of the developer feeding member and upstream of a light transmitting member, provided to a wall surface of a developer accommodating chamber of the developing device, with respect to a rotational direction of the rotation shaft when the cleaning member has passed through the light transmitting member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.