Optical beam scanning device and image forming apparatus

Details Optical beam scanning device and image forming apparatus Optical beam scanning device and image forming apparatus

2008-04-01

2008-04-01

Lee, John R. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S236000, C347S241000, C359S204200

Reexamination Certificate

active

07351950

ABSTRACT:
An optical beam scanning device including a plurality of optical elements that are arranged on a housing and give a plurality of scanning lines to a plurality of photoconductor drums with an interval L is provided. Optical characteristics are designed so that intervals of the beams in the sub-scanning direction are shifted only by −(αH−2×αF+αS)×L+αH×BP per unit temperature, where linear expansion coefficients of the housing, a frame for locating the photoconductor drums and a shaft, which is used for driving a belt or a recording medium carried on the belt on which images developed on the photoconductor are overlapped, are designated by αH, αF and αS, respectively, and an interval between light beams positions on surfaces to be scanned in a sub-scanning direction as an optical path reflection is expanded by mirrors from a deflecting surface to the surfaces to be scanned is designated by BP.

REFERENCES:
patent: 5751462 (1998-05-01), Shiraishi et al.
patent: 5774249 (1998-06-01), Shiraishi et al.
patent: 5963354 (1999-10-01), Shiraishi et al.
patent: 5995268 (1999-11-01), Shiraishi et al.
patent: 6055084 (2000-04-01), Shiraishi et al.
patent: 6061162 (2000-05-01), Shiraishi et al.
patent: 6084699 (2000-07-01), Shiraishi et al.
patent: 6104519 (2000-08-01), Shiraishi et al.
patent: 6125994 (2000-10-01), Todome
patent: 6201625 (2001-03-01), Shiraishi et al.
patent: 6219167 (2001-04-01), Shiraishi et al.
patent: 6337757 (2002-01-01), Shiraishi et al.
patent: 6347003 (2002-02-01), Shiraishi et al.
patent: 6392772 (2002-05-01), Hama et al.
patent: 6392773 (2002-05-01), Hama et al.
patent: 6452709 (2002-09-01), Shiraishi et al.
patent: 6683708 (2004-01-01), Shiraishi et al.
patent: 6778202 (2004-08-01), Shiraishi et al.
patent: 6791729 (2004-09-01), Atsuumi et al.
patent: 6903856 (2005-06-01), Hayashi
patent: 6965466 (2005-11-01), Ishihara
patent: 6977762 (2005-12-01), Hayashi
patent: 7002759 (2006-02-01), Hama et al.
patent: 2002/0196514 (2002-12-01), Atsuumi et al.
patent: 2004/0223048 (2004-11-01), Shiraishi et al.
patent: 2005/0024479 (2005-02-01), Itabashi et al.
patent: 2005/0173625 (2005-08-01), Shiraishi
patent: 2006/0232660 (2006-10-01), Nakajima et al.
patent: 2007/0030550 (2007-02-01), Shiraishi
patent: 2001-201705 (2001-07-01), None
T. Shiraishi U.S. PTO Notice of Allowance and Fee(s) Due, U.S. Appl. No. 11/049,973, Jul. 11, 2007, 5 pages.

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