Image forming apparatus for fixing a toner image at a first speed or at a second speed
US6057869A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1997 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Aug 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus of the type forming a toner image on a photoconductive drum or similar image carrier, transferring it to a paper or similar transfer medium via an intermediate transfer body, e.g., belt, and fixing it on the medium by a fixing device is disclosed. Just after the transfer of a toner image of the last color which is to lie over the other toner images on the intermediate transfer belt, the peripheral speed of the belt is switched to a comparatively low speed matching a fixing and paper transport speed. At this instant, the belt is moved away from the drum. The length of the transfer medium and the distance between a paper transfer position and a fixing position is compared. For a relatively short transfer medium, the peripheral speed of the belt is not switched to the low speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.