Developing device which supplies two-component developer containing toner and carrier and which discharges excessive developer and image forming apparatus therewith
US11347164B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2021 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jul 6, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0838
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device includes a developer container, a developer carrier, and first and second members for stirring/conveying. The developing container has a first partition wall between first and second chambers, communication portions through which those chambers communicate at opposite ends of the first partition wall, a developer supply port, and a developer discharge portion. The first member stirs and conveys developer in the first chamber in a first direction. The second member stirs and conveys developer in the second chamber in a second direction and includes a regulating portion and a discharging blade. The developer container includes a second partition wall between the first chamber and the regulating portion. The second partition wall is lower than the first partition wall, and an upper end part of the second partition wall is between upper and lower end parts of the rotary shaft of the second stirring/conveying member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.