System for controlling the reciprocation of a scanning arrangeme

Details System for controlling the reciprocation of a scanning arrangeme System for controlling the reciprocation of a scanning arrangeme

1983-07-05

1986-02-04

Shoop, Jr., William M.

Photocopying

Including fiber optics

355 14R, 355 14C, 355 3R, 318696, 318626, G03G 1500

Patent

active

045681716

ABSTRACT:
A system for controlling the reciprocation of a scanning apparatus includes scanning device for scanning an original from a home position across the original to a scanned position and returning it from the scanned position back to the home position, a D.C. motor for driving the scanning device, and a switching circuit for providing electric power to the D.C. motor. A control device is coupled to the switching circuit for controlling the speed of the scanning device such that: the scanning device scans across the original at a predetermined constant speed; when it reaches the scanned position, the scanning device starts to return back towards the home position by application of a constant supply of power having a predetermined level; and thereafter it is gently returned back to the home position with less deviation.

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