Laser beam scanning apparatus

Details Laser beam scanning apparatus Laser beam scanning apparatus

1991-03-19

1992-05-12

Ben, Loha

Optical: systems and elements

Deflection using a moving element

359217, 359629, 359204, 250236, 346108, G02B 2610

Patent

active

051132796

ABSTRACT:
A laser beam scanning apparatus for laser printers, digital copying machines and the like in which a plurality of laser beams are combined, the composite laser beam is deflected in the main scan direction and a part of the deflected composite laser beam enters an optical path at an SOS signal sensor, then the composite laser beam is split and directed to different parts of an exposure member. Although there is some mixing of one beam split from the composite beam with unsatisfactorily separated beam, the unsatisfactorily separated beam is further separated in the optical path to the exposure member, thus effectively preventing the occurrence of image ghosts on the exposure member.

REFERENCES:
patent: 3546374 (1970-12-01), Graser, Jr.
patent: 4205350 (1980-05-01), Gunning
patent: 4827334 (1989-05-01), Johnson et al.
patent: 4950888 (1990-08-01), Hamada

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