Image forming apparatus and constant current circuit switching d

Details Image forming apparatus and constant current circuit switching d Image forming apparatus and constant current circuit switching d

1993-03-22

1994-12-13

Epps, Georgia Y.

Coherent light generators

Particular component circuitry

Optical pumping

372 26, 372 29, 372 31, 372 32, H01S 300

Patent

active

053735188

ABSTRACT:
A driver IC for driving a light source comprises means for generating a constant current, switching means for switching the constant current supplied to the light source, first input terminal for inputting a first signal to modulate a light emitted by the light source, said switching means performing a switching operation in accordance with the first signal, and second input terminal for inputting a second signal so as to supply the constant current to the light source, irrespective of the first signal.

REFERENCES:
patent: 4695714 (1987-09-01), Kimizuka et al.
patent: 4819242 (1989-04-01), Kaku et al.
patent: 4878225 (1989-10-01), Aiba et al.
patent: 4899344 (1990-02-01), Shibata et al.
patent: 5043745 (1991-08-01), Inoue et al.
O. Wada, et al., "Monolithic Integration Of A Quantum-Well Laser And A Driver Circuit On A GaAs Substrate", International Electron Devices Meeting, 1984, pp. 520-523.

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