Apparatus for controlling intensity of laser beam emitted from s

Details Apparatus for controlling intensity of laser beam emitted from s Apparatus for controlling intensity of laser beam emitted from s

1990-12-27

1993-07-06

Pendegrass, Joan H.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

250205, 372 31, H01S 310, G03G 1500

Patent

active

052258505

ABSTRACT:
In an apparatus for adjusting the intensity of a light beam, the light beam from a semiconductor laser is deflected to scan a photosensitive drum and is detected to generate a positional signal by a photodetector outside of the drum. The intensity of the light beam is also detected by a monitor detector and compared with a predetermined value. The comparison result is latched in a latch circuit in accordance with the positional signal and the semiconductor laser is controlled depending on the latched comparison result.

REFERENCES:
patent: 4201994 (1980-05-01), Hoshito et al.
patent: 4443695 (1984-04-01), Kitamura
patent: 4618958 (1986-10-01), Shibata et al.
patent: 4837787 (1989-06-01), Takesue et al.
patent: 4845720 (1989-07-01), Koishi et al.
patent: 4935615 (1990-06-01), Eiichi et al.

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