Optical information recording/reproducing apparatus supplying a

Details Optical information recording/reproducing apparatus supplying a Optical information recording/reproducing apparatus supplying a

1995-06-16

1998-07-14

Metjahic, Safet

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347237, 347246, 347247, B41J 247, B41J 2435, H01S 300, G02B 2602

Patent

active

057812225

ABSTRACT:
An optical information recording and/or reproducing apparatus includes a first semiconductor laser for generating a light beam for recording or erasing information on an optical information recording medium. Also provided is a second semiconductor laser for generating a light beam for reproducing recording information from the optical information recording medium, and a first direct current supplying circuit for supplying a first direct current to the first semiconductor laser. A second direct current supplying circuit supplies a second direct current to the second semiconductor laser, and a high-frequency current supplying circuit supplies high-frequency currents to the first semiconductor laser and the second semiconductor laser. The high-frequency current supplying circuit supplies a smaller high-frequency current to the first semiconductor laser than to the second semiconductor laser.

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Patent Abstracts of Japan, vol. 017,. No. 662, published Dec. 7, 1993, English Abstract of Jap. Pat. No. 5-217192.

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