System for controlling an original image scanning for use in sli

Details System for controlling an original image scanning for use in sli System for controlling an original image scanning for use in sli

1980-02-14

1982-01-12

Hix, L. T.

Photocopying

Projection printing and copying cameras

Focus or magnification control

355 8, G03B 2732, G03G 1528

Patent

active

043102417

ABSTRACT:
A system for controlling an original image scanning for use in a slit exposure type image recording apparatus adapted to project an original image through slit exposure over an image recording medium moving at a predetermined speed, which comprises an oscillating means for generating an output of a predetermined frequency, a first pulse counting means supplied with the output from said oscillating means and a magnification data corresponding to a desired image magnification ratio and generating output pulses of a predetermined frequency, a power amplifying means receiving said output pulses from said first pulse counting means and generating a power output of a predetermined frequency corresponding thereto, and a synchronous motor for conducting the original image scanning while driven by the power output from said power amplifying means.

REFERENCES:
patent: 3598489 (1971-08-01), Thomas et al.
patent: 4120578 (1978-10-01), Daniels et al.
patent: 4211482 (1980-07-01), Arai et al.

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