Developing apparatus including guide for preventing packing and leaking of developer and image forming apparatus provided with the same
US8170451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2010 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Aug 19, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0822
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A housing of a developing apparatus is provided with a conveying member in a developer supplying and recovering portion, and with first and second agitating members rotating from the below to the above in portions opposed to each other in a developer agitating portion. A guide is provided in an inner bottom surface of the housing between the first and second agitating members. A discharge portion provided with a developer discharge port is provided on a downstream side of the developer agitating portion in a developer conveying direction of the first agitating member. A suitable amount of developer can be circulated while conveying a part of an excess amount of developer in a circulating conveying path to the discharge portion and discharging from the developer discharge port. Packing and leaking of the developer within the developing apparatus and breakage of the developing apparatus can be prevented and also a good image can be obtained even if high printing images are continuously provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.