Exposing device and image forming apparatus

Details Exposing device and image forming apparatus Exposing device and image forming apparatus

2011-03-01

2011-03-01

Pham, Hai C (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

Reexamination Certificate

active

07898562

ABSTRACT:
An exposing device which radiates light on a photoconductor drum which rotates, thereby executing exposure, includes a light-emitting element unit including light-emitting element having an emission area which emits light that is generated, the emission area having a rectangular shape with a long side along a direction perpendicular to a rotational direction of the photoconductor drum, and a short side along the rotational direction, a lens unit which focuses the light, which is emitted from the emission area, on a peripheral surface of the photoconductor drum, thereby executing exposure, and forming on the peripheral surface a beam spot, and a driving circuit which causes the light-emitting element to emit light, thereby making a width of the shape of the beam spot in a direction along the rotational direction close to a width of the beam spot in a direction perpendicular to the rotational direction.

REFERENCES:
patent: 6121996 (2000-09-01), Gelbart
patent: 6330011 (2001-12-01), Taira et al.
patent: 2005/0146597 (2005-07-01), Seto
patent: 57-026875 (1982-02-01), None
patent: 57-130064 (1982-08-01), None
patent: 64-27945 (1989-01-01), None
patent: 8-224903 (1996-09-01), None
patent: 9-277589 (1997-10-01), None
patent: 2004-327217 (2004-11-01), None
Japanese Office Action dated Dec. 15, 2009 and English translation thereof issued in a counterpart Japanese Application No. 2007-230575.
Japanese Office Action dated Jul. 28, 2009 (5 pages), and English translation thereof (6 pages), issued in counterpart Japanese Application Serial No. 2007-230576.

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