Developing device having a voltage application member for applying varied voltages
US7302214B2 · kind B2 · utility
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1References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2004 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Dec 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0656
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device 10 has a voltage application member 18 which is in contact via a toner layer with a developing roller 14 that rotates while holding the toner layer on its outer peripheral surface. To the toner layer, the voltage application member 18 applies a relatively low voltage in an upstream-side contact portion with respect to a rotational direction of the developing roller 14, and applies a relatively high voltage in a downstream-side contact portion thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.