Light scanner, multibeam scanner, and image forming...

Details Light scanner, multibeam scanner, and image forming... Light scanner, multibeam scanner, and image forming...

2005-11-15

2005-11-15

Cherry, Euncha P. (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S204200

Reexamination Certificate

active

06965466

ABSTRACT:
A multibeam scanner including a light source for emitting a plurality of light beams, a deflector for deflecting the plurality of light beams emitted from the light source, and a scanning optical system for guiding the plurality of light beams deflected by the deflector to a scan surface. A first light shielding member for determining one end of the diameter of at least one of the plurality of light beams and a second light-shielding member for determining the other end of the diameter of the at least one of the plurality of light beams are disposed apart from each other in a direction in which the light beams propagate and between the light source and the deflector. The first light-shielding member and the second light-shielding member are used to limit the diameter of the at least one of the plurality of light beams.

REFERENCES:
patent: 5200611 (1993-04-01), Hattori
patent: 5463418 (1995-10-01), Tateoka
patent: 5570224 (1996-10-01), Endo et al.
patent: 5774248 (1998-06-01), Komatsu
patent: 6317244 (2001-11-01), Ishibe
patent: 5-34613 (1993-02-01), None

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