Multi-beam optical scanning apparatus and image forming...

Details Multi-beam optical scanning apparatus and image forming... Multi-beam optical scanning apparatus and image forming...

2006-02-28

2006-02-28

Pham, Hai (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S259000

Reexamination Certificate

active

07006120

ABSTRACT:
A multi-beam optical scanning apparatus includes a semiconductor laser array slanted relative to a sub-scanning direction and emitting a plurality of optical beams; a coupling lens converting a shape of each optical beam emitted from the semiconductor laser array; and an aperture with an opening having a size of Am×As, arranged after the coupling lens in a direction in which the optical beam progresses, where Amis a dimension of the opening in a main scanning direction and Asis a dimension of the opening in the sub-scanning direction. When a length in the main scanning direction of a contour line defined by 1/e2strength of a maximum strength of an optical beam at the position of the aperture is Lm, and a length in the sub-scanning direction of the contour line defined by 1/e2strength of the maximum strength of the optical beam at the position of the aperture is Ls, the following conditional expressions are satisfied:in-line-formulae description="In-line Formulae" end="lead"?Am<Lm, and  (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Ls/Lm×0.3<As/Am<Ls/Lm×1.7.  (2)in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 4393387 (1983-07-01), Kitamura
patent: 5870132 (1999-02-01), Inoue et al.
patent: 6535317 (2003-03-01), Ishibe
patent: 6573921 (2003-06-01), Hayashi
patent: 2004/0090520 (2004-05-01), Sakai et al.
patent: 05-199372 (1993-08-01), None
patent: 06-273688 (1994-09-01), None
patent: 2508871 (1996-06-01), None
patent: 2001-311895 (2001-11-01), None
U.S. Appl. No. 10/028,698, filed Dec. 28, 2001, Hayashi.
U.S. Appl. No. 10/047,698, filed Jan. 18, 2002, Suzuki.
U.S. Appl. No. 10/059,371, filed Jan. 31, 2002, Ono.
U.S. Appl. No. 10/047,092, filed Jan. 17, 2002, Atsuumi.
U.S. Appl. No. 10/161,659, Jun. 5, 2002, Suzuki et al.
U.S. Appl. No. 10/161,756, Jun. 5, 2002, Atsuumi et al.
U.S. Appl. No. 10/207,241, filed Jul. 30, 2002, Suzuki et al.
U.S. Appl. No. 10/210,056, filed Aug. 2, 2002, Atsuumi et al.
U.S. Appl. No. 10/223,294, filed Aug. 20, 2002, Satoh et al.
U.S. Appl. No. 10/242,710, filed Sep. 13, 2002, Hayashi et al.
U.S. Appl. No. 10/247,702, filed Sep. 20, 2002, Hayashi et al.
U.S. Appl. No. 10/259,769, filed Sep. 30, 2002, Omori et al.
U.S. Appl. No. 10/278,916, filed Oct. 24, 2002, Suzuki et al.
U.S. Appl. No. 10/278,878, filed Oct. 24, 2002, Suzuki et al.
U.S. Appl. No. 10/319,624, filed Dec. 16, 2002, Ono et al.
U.S. Appl. No. 10/323,837, filed Dec. 20, 2002, Suzuki et al.
U.S. Appl. No. 10/345,365, filed Jan. 16, 2003, Kawamura et al.
U.S. Appl. No. 10/347,746, filed Jan. 22, 2003, Suzuki et al.
U.S. Appl. No. 10/375,036, filed Feb. 28, 2003, Suzuki et al.
U.S. Appl. No. 10/382,530, filed Mar. 7, 2003, Hayashi et al.
U.S. Appl. No. 10/382,489, filed Mar. 7, 2003, Takanashi et al.
U.S. Appl. No. 10/386,654, filed Mar. 13, 2003, Amada et al.
U.S. Appl. No. 10/391,580, filed Mar. 20, 2003, Sakai.
U.S. Appl. No. 10/395,128, filed Mar. 25, 2003, Hayashi et al.
U.S. Appl. No. 10/421,786, filed Apr. 24, 2003, Atsuumi et al.
U.S. Appl. No. 10/635,520, filed Aug. 7, 2003, Sakai et al.
U.S. Appl. No. 10/981,677, filed Nov. 5, 2005, Miyatake, et al.
U.S. Appl. No. 10/927,226, filed Aug. 27, 2004, Izumi et al.
U.S. Appl. No. 10/942,825, filed Sep. 17, 2004, Hayashi.
U.S. Appl. No. 10/942,907, filed Sep. 17, 2004, Miyatake et al.
U.S. Appl. No. 10/892,191, filed Jul. 16, 2004, Suzuki et al.
U.S. Appl. No. 10/866,043, filed Jun. 14, 2004, Hayashi et al.
U.S. Appl. No. 10/840,369, filed May 7, 2004, Itabashi et al.

Affiliated with

Also associated with

Rating

Multi-beam optical scanning apparatus and image forming... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-beam optical scanning apparatus and image forming..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-beam optical scanning apparatus and image forming... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3709801