Beam detector and light scanner unit having the same

Details Beam detector and light scanner unit having the same Beam detector and light scanner unit having the same

2008-05-13

2008-05-13

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S216000, C356S141400, C358S474000

Reexamination Certificate

active

11265184

ABSTRACT:
A beam detector includes a beam detection sensor to receive a light beam emitted from a light source of a light scanning unit and to generate a synchronous signal, a slit member having a slit formed therein to control a time to generate the synchronous signal of the beam detection sensor by adjusting an amount of the light beam received by the beam detection sensor, and a holder in which the slit member is installed. The slit is extended in a vertical direction and, a pair of surfaces form the slit and face each other, one of the pair of surfaces at which a scanned light beam arrives first is inclined in the vertical direction.

REFERENCES:
patent: 5663558 (1997-09-01), Sakai
patent: 6362470 (2002-03-01), Yoshida et al.
patent: 1085743 (2001-03-01), None
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patent: 10-142541 (1998-05-01), None
patent: 2001-159738 (2001-06-01), None
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Korean Office Action dated Aug. 30, 2006 issued in KR 2005-33546.
Chinese Office Action dated Jun. 1, 2007 issued in CN 1006100777326.

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