Color image forming apparatus with intermediate transfer
US5729809A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Jun 6, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0497
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color image forming apparatus includes a drum type image forming body; four charging devices for charging the image forming body; four exposure devices fixed on the main body for imagewise exposing the charged image and forming body to form a latent image; four developing devices each for developing the latent image to form a different colored toner image. After operations by the charging devices, the exposure devices and the developing devices are repeated to superimpose the different colored toner images on the image forming body, the superimposed colored toner images are transferred by a transfer device including an intermediate transferring member and a transfer member in contact with the intermediate transferring member onto a recording material at one time. Two developing devices are disposed at left and right positions, respectively, with respect to a vertical line passing through a center of the image forming body, and another two developing devices are disposed at upper and lower positions, respectively, with respect to a horizontal line passing through the center of the image forming body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.