Method of automatically adjusting a picture reproducing apparatu

Details Method of automatically adjusting a picture reproducing apparatu Method of automatically adjusting a picture reproducing apparatu

1979-12-26

1982-02-02

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Focus or magnification control

354 25, 355 77, G03B 2734, G03B 2740

Patent

active

043136761

ABSTRACT:
A method of adjusting a picture reproducing apparatus such as for instance a camera, which comprises an original plane, an objective plane, and a picture plane, by means of driving means in the form of direct-current motors. The motors are controlled by means of voltage pulses, each motor being stopped after each supply of pulses, and the width of the pulses being regulated in response to the voltage across the motor in question. The direct-current motor thereby replaces a stepping motor.

REFERENCES:
patent: 3625607 (1971-12-01), Bravenec
patent: 3634008 (1972-01-01), Plummer et al.
patent: 3735686 (1973-05-01), Brewer et al.
patent: 3779642 (1973-12-01), Ogawa et al.
patent: 3832058 (1974-08-01), Gusovius
patent: 4021115 (1977-05-01), Jeppesen

Affiliated with

Also associated with

Rating

Method of automatically adjusting a picture reproducing apparatu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of automatically adjusting a picture reproducing apparatu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of automatically adjusting a picture reproducing apparatu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1819373