Multi-beam laser scanning device

Details Multi-beam laser scanning device Multi-beam laser scanning device

2006-07-11

2006-07-11

Pham, Hai (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S259000

Reexamination Certificate

active

07075563

ABSTRACT:
There is provided a multi-beam laser scanning device able to efficiently suppress and prevent density fluctuation and achieve higher image quality. The multi-beam laser scanning device comprises a light emitting source generating a plurality of laser beams, a rotating deflector that has a plurality of deflecting surfaces. On a scanning surface, an interval between a scanning line X generated by deflection of a first deflecting surface of the deflector and a scanning line Y generated by deflection of a second deflecting surface of the deflector and adjacent to the scanning ling X satisfies at least one of the following two equations:in-line-formulae description="In-line Formulae" end="lead"?ΔP′<0.8·Psin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?ΔP′<0.6·Wsin-line-formulae description="In-line Formulae" end="tail"?where ΔP′ represents the difference between a maximum interval and a minimum interval between the scanning line X and the scanning line Y, Ps represents an object value of two neighboring scanning lines, and Ws represents the size of a light spot in the sub-scan direction.

REFERENCES:
patent: 4393387 (1983-07-01), Kitamura
patent: 5128699 (1992-07-01), Nakajima et al.
patent: 5136418 (1992-08-01), Itabashi
patent: 5221986 (1993-06-01), Itabashi
patent: 5383754 (1995-01-01), Sumida et al.
patent: 5426298 (1995-06-01), Sakuma et al.
patent: 5475522 (1995-12-01), Itabashi et al.
patent: 5504613 (1996-04-01), Itabashi et al.
patent: 5648864 (1997-07-01), Itabashi
patent: 5914800 (1999-06-01), Akatsu
patent: 6049408 (2000-04-01), Tada
patent: 6376837 (2002-04-01), Itabashi et al.
patent: 6381057 (2002-04-01), Itabashi
patent: 6429956 (2002-08-01), Itabashi
patent: 6469772 (2002-10-01), Itabashi
patent: RE38195 (2003-07-01), Sakai et al.
patent: 6596985 (2003-07-01), Sakai et al.
patent: 2002/0101665 (2002-08-01), Ohashi et al.
patent: 2000-241730 (2000-09-01), None
patent: 2001-13433 (2001-01-01), None
U.S. Appl. No. 09/946,482, filed Sep. 6, 2001, Ohashi et al, U.S. Pat. 6,747,818.
U.S. Appl. No. 09/715,151, filed Nov. 20, 2000, Itabashi, U.S. Pat. 6,700,687.
U.S. Appl. No. 09/769,510, filed Jan. 26, 2001, Nakajima et al., (Pending).
U.S. Appl. No. 09/810,184, filed Mar. 19, 2001, Itabashi, U.S. Pat. 6,624,920.
U.S. Appl. No. 09/827,097, filed Apr. 6, 2001, Ono et al., (Pending).
U.S. Appl. No. 09/873,256, filed Jun. 5, 2001, Ema et al., (Pending).
U.S. Appl. No. 10/102,633, filed Mar. 22, 2002, Ameyama et al., U.S. Pat. 6,707,480.
U.S. Appl. No. 10/183,748, filed Jun. 28, 2002, Nihei et al., (Pending).
U.S. Appl. No. 10/247,702, filed Sep. 20, 2002, Hayashi et al., (Pending).
U.S. Appl. No. 10/319,624, filed Dec. 16, 2002, Ono et al., (Pending).
U.S. Appl. No. 10/448,413, filed Mar. 30, 2003, Itabashi, (Pending).
U.S. Appl. No. 10/448,413, filed May. 30, 2003, Itabashi.
U.S. Appl. No. 10/840,369, filed May 7, 2004, Itabashi et al.

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