Driver for a diode laser

Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means

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372 29, 372 31, G01D 1516, H01S 313

Patent

active

049722107

ABSTRACT:
A driver is disclosed for a diode laser for use in a laser printer. The driver current is controlled in accordance with a digital video signal. In order to provide an effective means of converting the video signal to the desired driver current, the digital signal is provided to a plurlality of current-weighted subdrivers. In order to overcome the effects of optical feedback in an apparatus, signals to the subdrivers are composite signals formed from a high frequency carrier and the video signal.

REFERENCES:
patent: 3225345 (1965-12-01), Absatz et al.
patent: 4339822 (1982-07-01), Kolodzey
patent: 4491875 (1985-01-01), Kawamura
patent: 4789987 (1988-12-01), Fraser
patent: 4799069 (1989-01-01), Sasaki et al.
"Low-Frequency Intensity Fluctuation in Laser Diodes with External Optical Feedback", Appl. Phys. Lett., 38(4) Feb. 15, 1981.
"Optimum Conditions for the High Frequency Noise Reduction Method in Optical Videodisc Players", Applied Optics, vol. 25, No. 9, 5/86.

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