Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2011-03-01
2011-03-01
Font, Frank G (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C347S261000, C359S219100, C359S900000
Reexamination Certificate
active
07898709
ABSTRACT:
In the optical deflector, the mean width of profile elements of a cross section of the deflection surface in the sub scan direction is set to be less than the spacing between spots of the light beams formed in the sub scan direction of the deflection surface. This makes it possible to prevent a variation in the size and shape of the spots of the light beams deflected by the deflection surface due to the undulation (unevenness) of the deflection surface. As a result, it is able to suppress a decrease of the granularity of images and form images with high quality.
REFERENCES:
patent: 4826271 (1989-05-01), Takahashi et al.
patent: 5009974 (1991-04-01), Honda et al.
patent: 5069515 (1991-12-01), Itami et al.
patent: 5463503 (1995-10-01), Kawada et al.
patent: 5692287 (1997-12-01), Nakamura et al.
patent: 5726699 (1998-03-01), Itami et al.
patent: 5739602 (1998-04-01), Suzuki et al.
patent: 5769544 (1998-06-01), Suzuki et al.
patent: 6243187 (2001-06-01), Inenaga et al.
patent: 6574023 (2003-06-01), Matsui et al.
patent: 6580186 (2003-06-01), Suzuki et al.
patent: 6778203 (2004-08-01), Itami et al.
patent: 6822775 (2004-11-01), Suzuki et al.
patent: 7012725 (2006-03-01), Matsui et al.
patent: 7126737 (2006-10-01), Atsuumi et al.
patent: 7355773 (2008-04-01), Yamawaki
patent: 7456963 (2008-11-01), Shishido et al.
patent: 2006/0061847 (2006-03-01), Itami
patent: 2006/0208179 (2006-09-01), Itami
patent: 2007/0146852 (2007-06-01), Itami
patent: 2007/0153349 (2007-07-01), Itami et al.
patent: 06194593 (1994-07-01), None
patent: 2001-228432 (2001-08-01), None
patent: 2001-322012 (2001-11-01), None
patent: 2005-092129 (2005-04-01), None
patent: 2006-301482 (2006-11-01), None
patent: 3227226 (2007-08-01), None
Arai Kiyofumi
Inada Hisashi
Itami Yukio
Kikuchi Takeshi
Masuda Kensuke
Dickstein & Shapiro LLP
Font Frank G
Ricoh & Company, Ltd.
LandOfFree
Optical scan apparatus, image formation apparatus, optical... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical scan apparatus, image formation apparatus, optical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical scan apparatus, image formation apparatus, optical... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2745490