Semiconductor laser drive circuit in laser beam printer

Details Semiconductor laser drive circuit in laser beam printer Semiconductor laser drive circuit in laser beam printer

1987-05-11

1988-05-31

Scott, Jr., Leon

Coherent light generators

Particular component circuitry

Optical pumping

372 29, 372 26, H01S 300

Patent

active

047486333

ABSTRACT:
A semiconductor laser drive circuit in which a constant current circuit responds to the voltage developed by the constant current across a grounded resistor and in which a buffer circuit, such as a base-grounded transistor, is interposed between the source of the constant current and the laser.

REFERENCES:
patent: 4412331 (1983-10-01), Chapman
patent: 4539686 (1985-09-01), Bosch et al.
patent: 4639924 (1987-01-01), Tsunekawa

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