Electrophotography – Image formation – Transfer
Patent
1996-11-14
1999-09-28
Brase, Sandra L.
Electrophotography
Image formation
Transfer
399298, 399300, G03G 1501
Patent
active
059602414
ABSTRACT:
A color image forming device that can suppress the occurrence of a transfer positional shift due to a variation in velocity of the drive system as low as possible even when the distance between image transfer points of each color varies. In the color image forming device, after a position of a first image transfer point and the position of the second image transfer point are decided so that the distance between the first image transfer point and the second image transfer point is equal to an integral multiple of a reference length corresponding to the velocity variation period of the drive system, positions of image transfer points on the lower side than the second image transfer point are sequentially decided from the upper side of the conveying path according to the following procedures. The temporary position of an i (.gtoreq.3) -th image transfer point is decided. A shortest conveying path is decided for each of the first to i-th or (i-1)-th image transfer points, among conveying paths which extend from each of the first to (i-1)-th image transfer point to the temporary position. A position of a point near the temporary position which the shortest conveying path from each of the first to (i-1)-th image transfer points reaches is decided so that the shortest coneying path length is equal to an integral multiple of the reference length. The position of the i-th image transfer point is decided based on the positions of the (i-1) points obtained. The color image forming device is applicable to printers of electro-photographic system or electrostatic recording system.
REFERENCES:
patent: 4796050 (1989-01-01), Furuta et al.
patent: 5119139 (1992-06-01), Torisawa
patent: 5296897 (1994-03-01), Amemiya et al.
patent: 5309203 (1994-05-01), Hokari
patent: 5365324 (1994-11-01), Gu et al.
patent: 5469248 (1995-11-01), Fujiwara et al.
patent: 5541634 (1996-07-01), Otsuka et al.
patent: 5581327 (1996-12-01), Izumizaki et al.
Brase Sandra L.
Fujitsu Limited
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