Developing device and image forming apparatus including the same
US8892006B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 2012 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | May 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a developing device including: a first helical blade; a second helical blade formed at the same blade pitch as a blade pitch of the first helical blade; a developer discharge port for discharging surplus developer; and a regulating member formed in a reverse phase with respect to the first helical blade. When a proximity portion is at a position facing a communication portion, a blade apex portion of the second helical blade is arranged to fall within a range of from a position facing an end surface portion of the communication portion on a downstream side of the second conveyance path to a position immediately before a position facing the proximity portion, which is reached in accordance with a phase shift of the second helical blade. A first stirring member and a second stirring member are driven at the same rotational speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.