Developing apparatus for preventing deterioration of toner charge quantity and filming of toner
US6151475A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Jul 6, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2217/0025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing apparatus deterioration of toner charge quantity on double rollers and prevents filming of the toner. The developing apparatus includes a first roller for conveying a developer contained in a container, a blade for charging the developer on the first roller to a predetermined polarity and for restricting the conveyance quantity of the developer, and a second roller opposed to the first roller. The second roller receives the developer from the first roller to hold it on an outer surface thereof. The apparatus further includes a developer recovering device for recovering the developer from the second roller at a non-developing time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.