Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-05-02
2006-05-02
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C359S205100, C347S233000
Reexamination Certificate
active
07038194
ABSTRACT:
A multiple-beam scanning device of the present invention includes a light source unit provided with a plurality of light sources. A deflector deflects, in the main scanning direction, light beams issuing from the light sources. Optics condenses the light beams deflected by the deflector with optical devices having power in the subscanning direction main scanning direction, respectively, in such a manner as to establish a preselected beam spot diameter, and returns an optical path with at least one mirror for thereby scanning a subject surface. An adjusting device provides, in a plane formed by scanning lines deflected by the deflector, one of the optical devices with α eccentricity about the center of an optical axis in the direction of the optical axis.
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U.S. Appl. No. 10/644,839, filed Aug. 21, 2003, Tomita.
U.S. Appl. No. 10/733,246, filed Dec. 12, 2003, Serizawa et al.
Luu Thanh X.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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