Developing unit
US9599926B2 · kind B2 · utility
5Cited by
19References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2015 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Feb 26, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0634
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing unit includes a developing container, a developing sleeve, a developer regulating member, and a magnetic field generating portion. The magnetic field generating portion includes a drawing-up pole and a cut pole. In addition, in a peak-to-peak area, the magnetic field generating portion includes at least one of an Fr flat area in which Fr is substantially constant and an Fr attenuation area in which Fr attenuates toward the cut pole side from the drawing-up pole side, and is configured that Fθ is oriented toward the same direction as a direction of rotation of the developing sleeve in the entire peak-to-peak area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.