Developer unit
US5133283A · kind A · utility
5Cited by
0References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1991 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Jan 10, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0609
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developer unit which includes a developer tank housing a developing roller including a sleeve and a magnet member both rotatable, wherein the magnet member is rotated longer than the sleeve, and wherein the rotating direction of the magnet member is opposite to that occurring when the sleeve and the magnet member rotate simultaneously. This strengthens the stirring force for the developer, thereby enhancing the chargeability of the toner and maintaining a desired image density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.