Coherent light generators – Particular beam control device – Scanning
Patent
1993-07-09
1994-10-18
Bovernick, Rodney B.
Coherent light generators
Particular beam control device
Scanning
372 29, 372 26, 372 31, 372 38, H01S 310
Patent
active
053575342
ABSTRACT:
In a light beam scanning recording apparatus, a recording material is scanned with a laser beam having been produced by a single-longitudinal-mode semiconductor laser and having been directly modulated in accordance with an image signal, and a continuous tone image is thereby recorded on the recording material. A device superimposes a radio-frequency current upon a drive current for the semiconductor laser. An amplitude of the radio-frequency current is set at a value, which causes the semiconductor laser to oscillate in a multiple longitudinal mode, when the drive current for the semiconductor laser falls within a range such that an optical output power yielding a recorded optical density of not higher than approximately 2.0 may be obtained. Nonuniformity in image density is thereby prevented from occurring in the recorded image, and the cost of the apparatus is prevented from becoming markedly high due to countermeasures for nonuniformity in image density.
REFERENCES:
patent: 4480325 (1984-10-01), Aiki et al.
patent: 4712218 (1987-12-01), Ohnuki et al.
patent: 4819242 (1989-04-01), Kaku et al.
patent: 4831626 (1989-05-01), Watanabe et al.
patent: 4835781 (1989-05-01), Shoji
patent: 4849980 (1989-07-01), Shoji et al.
patent: 4977561 (1990-12-01), Ibe et al.
patent: 5283793 (1994-02-01), Shoji
English language abstract for Japanese Patent Pubication No. 59-9086, Kunio et al, Apr. 11, 1980.
Bovernick Rodney B.
Fuji Photo Film Co. , Ltd.
Sanghavi Hemang
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