Laser scanning unit

Details Laser scanning unit Laser scanning unit

1997-09-16

2000-05-30

Phan, James

Optical: systems and elements

Deflection using a moving element

Pivotal or rotational element

359198, 359212, 359223, G02B 2608

Patent

active

06069727&

ABSTRACT:
A laser scanning unit in which a digital micro mirror device is used as a laser beam deflecting device and which is used in a laser printer, a facsimile unit, and the like. The laser scanning unit according to the present invention includes a laser diode for emitting laser beams, a photo-sensitive drum for receiving the laser beams emitted by the laser diode, and a deflecting device which is disposed between the laser diode and the photo-sensitive drum, for deflecting the laser beams toward the photo-sensitive drum. The deflecting device comprises a reflecting member for reflecting the laser beams emitted from the laser diode toward the photo-sensitive drum at a predetermined angle, a rotating member for rotating the reflecting member at a range of predetermined angles, and a supporting member for supporting the reflecting member so that the reflecting member can be rotated.

REFERENCES:
patent: 5235454 (1993-08-01), Iwasaki
patent: 5428473 (1995-06-01), Takizawa et al.
patent: 5629790 (1997-05-01), Neukermans et al.
patent: 5694237 (1997-12-01), Melville

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