Automatic exposure control

Details Automatic exposure control Automatic exposure control

1985-04-09

1987-04-28

Hix, L. T.

Photocopying

Projection printing and copying cameras

Illumination systems or details

355 69, G03B 2774

Patent

active

046609687

ABSTRACT:
An exposure control for an imaging apparatus, the apparatus producing a light image based on an image member presented to the apparatus which is directed to a light responsive member via a partially silvered mirror of the apparatus. The exposure control includes a photocell which receives light transmitted through the mirror via a condensing lens, the photocell being connected to a circuit means which produces a signal having a duration, which varies according to the resistance of the photocell. The signal is used by a portion of the circuit means for controlling the exposure of the light responsive member to the light image.

REFERENCES:
patent: 3743405 (1973-07-01), Morse et al.
patent: 4433906 (1984-02-01), Nakatani et al.
patent: 4443081 (1984-04-01), Suzuki
patent: 4509849 (1985-04-01), Momiyama
patent: 4533238 (1985-08-01), Miyazaki

Affiliated with

Also associated with

Rating

Automatic exposure control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic exposure control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic exposure control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-473879