Original scanning device with backward scanning control feature

Details Original scanning device with backward scanning control feature Original scanning device with backward scanning control feature

1998-11-03

2000-06-27

Lee, Susan S. Y.

Electrophotography

Image formation

Exposure

399210, G03G 1504, G03G 1528

Patent

active

060816821

ABSTRACT:
An original scanning device can set a brake operation starting timing in a scanner backward movement to a predetermined timing, even if a scanning distance of the device is determined at any distance. To do so, a copy machine starts braking the scanning device when a sensor detects that the scanning device backwardly moved to a predetermined position. In this machine, a distance to be scanned by the scanning device is determined based on an original size or a copy magnification, it is judged whether or not a distance between a turn position of the scanning device and the predetermined position according to the determined distance to be scanned is a distance by which the scanning device can reach a predetermined speed in its backward movement, the scanning device is backwardly moved after forwardly moving it to a position according to the determined distance to be scanned in case of affirmative judgment, and the scanning device is backwardly moved after forwardly moving it to a position according to the distance by which the scanning device can reach the predetermined speed in its backward movement in case of negative judgment.

REFERENCES:
patent: 4561771 (1985-12-01), Sugiura
patent: 4645328 (1987-02-01), Shiraki et al.
patent: 4707111 (1987-11-01), Inuzuka et al.
patent: 4996564 (1991-02-01), Shirasugi
patent: 5119136 (1992-06-01), Morikawa
patent: 5162851 (1992-11-01), Asakawa et al.
patent: 5192975 (1993-03-01), Ide et al.

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