Image forming apparatus for fixing a toner image at a first spee

Details Image forming apparatus for fixing a toner image at a first spee Image forming apparatus for fixing a toner image at a first spee

1997-08-19

2000-05-02

Barlow, John

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

399 68, B41J 2385, G03G 908, G03G 1520

Patent

active

060578696

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.

REFERENCES:
patent: 4451136 (1984-05-01), Tanioka et al.
patent: 4519700 (1985-05-01), Barker et al.
patent: 5041878 (1991-08-01), Takai et al.
patent: 5138392 (1992-08-01), Kinoshita et al.
patent: 5160970 (1992-11-01), Isogai
patent: 5216453 (1993-06-01), Itoh
patent: 5260751 (1993-11-01), Inomata

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