Optical beam scanning apparatus

Details Optical beam scanning apparatus Optical beam scanning apparatus

1992-09-09

1995-03-07

Fuller, Benjamin R.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347134, 347260, 358302, G01D 942

Patent

active

053962761

ABSTRACT:
An optical beam scanning apparatus comprises means of modulating the optical power of a laser beam produced by a laser beam source, means of shaping the laser beam profile, and means of deflecting and focusing the shaped laser beam on a scanning plane. The optical power of the laser beam is varied in synchronism with the variation of the optical power distribution so that the peak level of optical power of the laser beam is kept constant. The optical power of the laser beam on the photosensitive drum is kept constant irrespective of the beam diameter, and printed dots of intended diameters can be produced, whereby fine multi-tone images can be printed stably.

REFERENCES:
patent: 4370678 (1983-01-01), Kitamura
patent: 4499437 (1985-02-01), Blazey
patent: 4809021 (1989-02-01), Check et al.
patent: 5189441 (1993-02-01), Fukui et al.

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