Photography – Camera detail – Shutter
Reexamination Certificate
2007-04-17
2010-06-01
Koval, Melissa J (Department: 2862)
Photography
Camera detail
Shutter
C348S367000
Reexamination Certificate
active
07726889
ABSTRACT:
Foreign substances adhered to a focal plane shutter are shaken off by vibrationally driving the shutter a plurality of times in succession while the focal plane shutter, which controls the incidence of light on a photoelectric transducer converting an optical image of a photographic object into an electrical signal, shields the photoelectric transducer from light incident thereon. In other words, implementing vibrational removal of adhered foreign substances by means of overloading the focal plane shutter.
REFERENCES:
patent: 5818524 (1998-10-01), Juen
patent: 6071019 (2000-06-01), Shimada
patent: 2004/0047625 (2004-03-01), Ito et al.
patent: 2004/0218738 (2004-11-01), Arai et al.
patent: 2005/0088563 (2005-04-01), Ito et al.
patent: 2005/0237421 (2005-10-01), Kosugiyama
patent: 2005/0280712 (2005-12-01), Kawai
patent: 1482344 (2004-12-01), None
patent: 10-020364 (1998-01-01), None
patent: 10-052697 (1998-02-01), None
patent: 08-211445 (1998-08-01), None
patent: 3576703 (2004-10-01), None
All of the above references were cited in a Dec. 4, 2009 European Search Report of the counterpart European Patent Application No. 07106402.6.
Canon Kabushiki Kaisha
Cowan Liebowitz & Latman P.C.
Koval Melissa J
Parker Autumn
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