Laser diode printing apparatus

Details Laser diode printing apparatus Laser diode printing apparatus

1993-09-23

1996-08-20

Reinhart, Mark J.

Harness for working animal

H04N 123

Patent

active

055483208

ABSTRACT:
In the printing apparatus wherein the laser diode is used as light source for writing images on an image carrier, a control transistor is serially connected to the laser diode. The magnitude of the drive current for driving the laser diode is adjusted in accordance with the magnitude of the base current of the control transistor. The base current of the control transistor is turned on when the main power supply is implemented. That is, the control transistor is pre-heated up to print command. Consequently, the drive current is stable from the initial image formation after the main power supply is turned on.

REFERENCES:
patent: 4713672 (1987-12-01), Horthata et al.
patent: 5043745 (1991-08-01), Inoue et al.

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