Developing device used in an image forming apparatus
US7298995B2 · kind B2 · utility
2Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2005 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Nov 13, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0607
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The developing device 100 includes a stirrer and transferor 122, 124, a magnetic roller 130, and a developing roller 140, that are disposed in a housing 110 which contains the two-component developing agent including the magnetic carrier and the non-magnetic toner, wherein volumetric mean particle size of the non-magnetic toner is set in a range from 6 to 11 μm and proportion of toner particles not larger than 4 μm is set to 8% by number or less, thereby making it possible to prevent imaging defect (ghost) and sticking of the toner onto the developing roller from occurring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.