Laser beam optical scanning system and laser printing provided w

Details Laser beam optical scanning system and laser printing provided w Laser beam optical scanning system and laser printing provided w

1993-05-24

1994-03-15

Reinhart, Mark

Recorders

Record receiver deforming

B41J 2435, H04N 121

Patent

active

052949451

ABSTRACT:
A laser source unit in which a laser diode is located at a focal point of a Fresnel lens using refraction and diffraction. The laser diode emits a laser beam in accordance with a control signal generated by a driving circuit. The laser diode is driven such that defocus on an image surface caused by a rise in the temperature of the laser diode can be kept in a tolerable degree.

REFERENCES:
patent: 4662004 (1987-04-01), Fredriksen et al.
patent: 5212501 (1993-05-01), Nakamura et al.
patent: 5222037 (1993-06-01), Kubo et al.

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