Image forming apparatus

Electrophotography – Control of electrophotography process – Control of transfer

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Details

399302, G03G 1501, G03G 1514

Patent

active

056406452

ABSTRACT:
In an image forming apparatus, toner images of respective colors are sequentially formed on an image carrier. A primary image transfer unit sequentially transfers the toner images from the image carrier to an intermediate image transfer belt one above the other, thereby producing a composite color image on the belt. A secondary image transfer unit transfers the composite color image from the belt to a sheet or similar transfer material. When the belt makes a turn without image transfer, i.e., idles, an electric field output lower than an electric field output preselected for image formation is applied to the primary image transfer unit.

REFERENCES:
patent: 5099286 (1992-03-01), Nishise et al.
patent: 5182598 (1993-01-01), Hara et al.
patent: 5189478 (1993-02-01), Hara et al.
patent: 5438398 (1995-08-01), Tanigawa et al.
Patent Abstracts of Japan, vol. 17, No. 273, May 26, 1993 JP-A-5-11562, Jan. 22. 1993.

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