Image forming method and apparatus therefor

Details Image forming method and apparatus therefor Image forming method and apparatus therefor

1997-02-14

1998-08-04

Grimley, Arthur T.

Electrophotography

Image formation

Transfer

399162, 399167, G03G 1501, G03G 1516

Patent

active

057909300

ABSTRACT:
An image forming method using an image forming apparatus, the apparatus including: a rotary image carrier, and a rotary intermediate transfer medium arranged in pressure-contact with the image carrier, wherein at least one of the image carrier or the intermediate transfer medium is a belt-shape rotary body which is looped over a group of rolls and can circulate with at least one of the rolls as a drive transmission roll, and the peripheral length of the belt-shape rotary body is m (m: integer)-times as long as the peripheral length of the drive transmission roll, the method including the steps of: a toner image forming step of rotating the image carrier at a constant peripheral speed to form the toner image successively for each color component on the image carrier; a toner image intermediate transfer step of rotating the intermediate transfer medium at a constant peripheral speed different from the constant peripheral speed of the image carrier, on condition that one revolution time of the intermediate transfer medium is n (n: integer or 1/integer)-times as long as one revolution time of the image carrier, to transfer the toner image for each color component carried on the image carrier; and a toner image final transfer step of collectively transferring the toner image for each color transferred on the intermediate transfer medium onto a recording medium.

REFERENCES:
patent: 5040028 (1991-08-01), Kamimura et al.
patent: 5515145 (1996-05-01), Sasaki et al.
patent: 5515154 (1996-05-01), Hasegawa et al.
patent: 5519475 (1996-05-01), Miyamoto et al.

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