Optical scanning with light quantity compensation

Details Optical scanning with light quantity compensation Optical scanning with light quantity compensation

1989-08-23

1992-03-10

Reinhart, Mark J.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346160, H04N 121

Patent

active

050953192

ABSTRACT:
An optical beam apparatus includes a light emission device, a driver for driving the light emission device with the applied VIDEO signal, an integral circuit for estimating a drop of the quantity of light emited by the light emission device from the VIDEO signal applied, and a light output control circuit for controlling the driver in compliance with the estimated result so that the quantity of light emitted by the light emission device becomes constant.

REFERENCES:
patent: 4612555 (1986-09-01), Hongou et al.
patent: 4742363 (1988-05-01), Shiraishi

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