Laser diode drive system for multione image forming apparatus

Details Laser diode drive system for multione image forming apparatus Laser diode drive system for multione image forming apparatus

1988-08-03

1989-05-02

Scott Jr., Leon

Coherent light generators

Particular beam control device

Optical output stabilization

372 38, 372 26, 372 29, H01S 313

Patent

active

048274810

ABSTRACT:
A laser diode drive system suited to a multitone image forming apparatus. For stopping laser emission from a laser diode the laser diode drive system superimposes a signal having a level corresponding to a maximum level of a video signal applied to the laser diode on a detection signal corresponding to emission intensity of the laser diode. A signal formed by the superimposition is used for negative feedback to a laser diode drive circuit.

REFERENCES:
patent: 4412331 (1983-10-01), Chapman
patent: 4516242 (1985-05-01), Yokota
patent: 4577320 (1986-03-01), Yoshikawa et al.
patent: 4625315 (1986-11-01), Lemberger et al.
patent: 4674003 (1987-06-01), Angerstein et al.
patent: 4733398 (1988-03-01), Shibagari et al.
patent: 4763334 (1988-08-01), Shimada et al.

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