Device for minimizing intermediate belt stretch and shrinkage in

Details Device for minimizing intermediate belt stretch and shrinkage in Device for minimizing intermediate belt stretch and shrinkage in

1993-06-08

1994-12-27

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355273, 355275, G03G 1514

Patent

active

053769996

ABSTRACT:
A xerographic printer or digital copier has an intermediate belt for transferring images from several photoreceptive drums to sheets of paper. The intermediate belt experiences undesired stretching and shrinking which results in the size of the transferred image being distorted and the colors of the transferred image being misregistered. The printer is provided with a plurality of drag inducing members preferably in the form of drag rollers or skid plates which minimize the stretching and shrinking of the intermediate belt by counteracting the belt distorting forces. The magnitude of the drag forces to be applied by each of the drag inducing members can be calculated and the position of each of the drag inducing members can be adjusted according to each of the calculated drag forces.

REFERENCES:
patent: 4114536 (1978-09-01), Kaneko et al.
patent: 4415257 (1983-11-01), Kopp et al.
patent: 4699496 (1987-10-01), John et al.
patent: 4796047 (1989-01-01), Fowlkes et al.
patent: 4984024 (1991-01-01), Ohkaji et al.
patent: 5309203 (1994-05-01), Hokari

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