Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2007-07-24
2010-02-16
Pham, Hai C (Department: 2861)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S258000
Reexamination Certificate
active
07663657
ABSTRACT:
An optical scanning device includes a light source having light emitting points for emitting light beams, a coupling optical element that couples the light beams, a deflecting unit that deflects and scans the light beams, and a scanning optical system that focus the light beams to form an image. The optical scanning device satisfies the following condition: F tan(θ/2)+A<D/0.7 where A is the maximum distance between the light emitting points and an optical axis of the coupling optical element, θ is a divergence angle (full-width half-maximum) of the light beams, F is a focal length of. the coupling optical element, and D is an effective radius of the coupling optical element.
REFERENCES:
patent: 6172787 (2001-01-01), Naiki
patent: 6326992 (2001-12-01), Inoue et al.
patent: 6788444 (2004-09-01), Suzuki et al.
patent: 7002613 (2006-02-01), Beier et al.
patent: 7068296 (2006-06-01), Hayashi et al.
patent: 7106483 (2006-09-01), Hayashi et al.
patent: 7164516 (2007-01-01), Hayashi et al.
patent: 7218432 (2007-05-01), Ichii et al.
patent: 2003/0067533 (2003-04-01), Omori et al.
patent: 2005/0093955 (2005-05-01), Izumi et al.
patent: 2006/0077500 (2006-04-01), Hayashi et al.
patent: 2006/0187294 (2006-08-01), Saisho et al.
patent: 2006/0232659 (2006-10-01), Hayashi et al.
patent: 2006/0245009 (2006-11-01), Akiyama et al.
patent: 2006/0284968 (2006-12-01), Hayashi et al.
patent: 2007/0058255 (2007-03-01), Imai et al.
patent: 10-333070 (1998-12-01), None
patent: 11-223783 (1999-08-01), None
patent: 2001-272615 (2001-10-01), None
patent: 2001-350111 (2001-12-01), None
patent: 2002-214556 (2002-07-01), None
patent: 2003-337295 (2003-11-01), None
patent: 2004-126192 (2004-04-01), None
patent: 2005-258392 (2005-09-01), None
patent: 2006-85487 (2006-03-01), None
U.S. Appl. No. 11/873,635, filed Oct. 17, 2007, Hayashi, et al.
U.S. Appl. No. 11/877,020, filed Oct. 23, 2007, Hayashi, et al.
U.S. Appl. No. 12/110,862, filed Apr. 28, 2008, Ichii, et al.
U.S. Appl. No. 12/190,182, filed Aug. 12, 2008, Ichii et al.
U.S. Appl. No. 12/189,430, filed Aug. 11, 2008, Saisho.
U.S. Appl. No. 12/174,899, filed Jul. 17, 2008, Saisho et al.
Hayashi Yoshinori
Ichii Daisuke
Saisho Kenichiro
Sakai Kohji
Ueda Takeshi
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Pham Hai C
Ricoh & Company, Ltd.
LandOfFree
Optical scanning device and image forming apparatus 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 scanning device and image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical scanning device and image forming apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4184005