Color image forming apparatus
US7308212B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2006 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Feb 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0119
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The color image forming apparatus, having: an intermediate transfer member; a plurality of image forming sections provided along the intermediate transfer member; a primary transfer device provided along the intermediate transfer member to transfer toner images formed on each image forming section so that the toner images are superimposed on the intermediate transfer member; a secondary transfer device provided downstream side of the primary transfer device to transfer superimposed toner images through bias voltage; a discharging device having a grid and a discharge electrode provided between the primary transfer device and secondary transfer device; a image density sensor provided along the intermediate transfer member to detect an amount of toner adhesion on the intermediate transfer member; and a control device to control the applied voltage for the discharge electrode in accordance with output of the image density sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.