Optical: systems and elements – Deflection using a moving element
Reexamination Certificate
2005-02-01
2005-02-01
Phan, James (Department: 2872)
Optical: systems and elements
Deflection using a moving element
C359S212100, C359S216100, C250S234000
Reexamination Certificate
active
06850348
ABSTRACT:
A scanner is provided that has a light-beam emitter for emitting a light beam, a light-beam deflector for deflecting the light beam to scan a scanning surface, a photo-detector provided at a position outside an image-forming scanning range of the scanning surface to detect a scanning light beam before the scanning light beam starts generating a scanning line in the image-forming scanning range, a rotatable member located in front of an incident surface of the photo-detector and positioned in a recess formed on an outer surface of a housing. The rotatable member is rotatable about a rotational axis perpendicular to a plane defined by the scanning light beam by said deflector. The scanner also has an optical member provided on the rotatable member that allows the scanning light beam to pass therethrough to be incident upon the incident surface of the photo-detector, and a device for adjusting rotational position of said rotatable member about said rotational axis. A through hole through which the optical member is inserted in the housing is formed at the bottom of the recess, and the optical member is inserted into the housing through the through hole.
REFERENCES:
patent: 3852651 (1974-12-01), Defendch
patent: 4251149 (1981-02-01), Kimura
patent: 4918306 (1990-04-01), Saito
patent: 4998790 (1991-03-01), Iizuka
patent: 5237457 (1993-08-01), Oono et al.
patent: 5307104 (1994-04-01), Hamasaki
patent: 5418638 (1995-05-01), Hirasawa
patent: 5606449 (1997-02-01), Nishiyama
patent: 5610755 (1997-03-01), Ohtsuka
patent: 5621562 (1997-04-01), Hama
patent: 5936756 (1999-08-01), Nakajima
patent: 6-148491 (1994-05-01), None
English Language Abstract of JP 6-148491.
Greenblum & Bernstein P.L.C.
PENTAX Corporation
Phan James
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