Image forming apparatus having two-beam optical scanning unit wi

Details Image forming apparatus having two-beam optical scanning unit wi Image forming apparatus having two-beam optical scanning unit wi

1995-08-24

1998-06-23

Reinhart, Mark J.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347257, B41J 247

Patent

active

057710619

ABSTRACT:
An image forming apparatus, such as a copying machine or a printer having a two-beam optical scanning unit, includes a pair of semiconductor laser beam emitters, each emitter generating a respective laser beam. A beam composition prism composes the two laser beams and a photoreceptor is provided for holding an image written with the two laser beams. A defector deflects the two laser beams onto the photoreceptor in a primary scanning direction so that the two laser beams are emitted on a primary scanning plane. Two supporting members each respectively supports one of the pair of semiconductor laser beam emitters. A moving member is provided for moving at least one of the two supporting members so that at least one of the two laser beams is movably adjusted so as to have a predetermined emitting direction.

REFERENCES:
patent: 4725855 (1988-02-01), Arimoto et al.
patent: 4878066 (1989-10-01), Shiraishi
patent: 5006705 (1991-04-01), Saito et al.

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