Color image forming apparatus and discharging device before secondary transfer of the same
US7209692B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2005 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Nov 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1623
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color image forming apparatus is described, which makes highly durable image transferring possible. The color image forming apparatus includes: primary transferring devices to transfer unicolor toner images respectively formed on image bearing members onto an intermediate transfer member; a secondary transferring device to transfer the multi-color toner image onto a transfer material; a discharging device before secondary transfer, disposed at a position between a primary transferring device and the secondary transferring device; an electric discharge electrode disposed at a position opposing to the intermediate transfer member; an opposing electrode disposed at a position opposing to the electric discharge electrode while putting the intermediate transfer member between them; and a separating device to make the opposing electrode movable between an operating position at which the opposing electrode contacts the intermediate transfer member and a separating position being apart from the intermediate transfer member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.