Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2011-06-14
2011-06-14
Pham, Hai C (Department: 2861)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
Reexamination Certificate
active
07961211
ABSTRACT:
An optical scanning device includes a light source; a light source driving unit configured to modulate/drive the light source; a pulse width information holding unit configured to hold pulse width information items of predetermined pixels corresponding to scanning positions on a scan target surface; a deflecting unit including a reflection surface configured to deflect/scan a light beam from the light source; and a scan-imaging optical system configured to image the light beam deflected by the deflecting unit on the scan target surface. The pulse width information holding unit holds the pulse width information items which cancel out deviations of main scanning beam spot diameters among the scanning positions on the scan target surface; and the light source driving unit drives the light source based on the pulse width information items held by the pulse width information holding unit.
REFERENCES:
patent: 5489936 (1996-02-01), Appel et al.
patent: 6081386 (2000-06-01), Hayashi et al.
patent: 6995885 (2006-02-01), Nakajima
patent: 7599105 (2009-10-01), Nakajima
patent: 2007/0297036 (2007-12-01), Nakamura et al.
patent: 2008/0055690 (2008-03-01), Nakamura et al.
patent: 2008/0062491 (2008-03-01), Nakamura et al.
patent: 2008/0144132 (2008-06-01), Koga
patent: 2008/0192323 (2008-08-01), Nakamura et al.
patent: 2008/0204841 (2008-08-01), Suzuki et al.
patent: 2008/0218829 (2008-09-01), Nakamura
patent: 2009/0015897 (2009-01-01), Nakamura et al.
patent: 07266612 (1995-10-01), None
patent: 11174361 (1999-07-01), None
patent: 2002-82303 (2002-03-01), None
patent: 2005-215571 (2005-08-01), None
patent: 2007-292918 (2007-11-01), None
U.S. Appl. No. 12/204,483, filed Sep. 4, 2008, Nakamura.
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-2665854