Electrophotography – Supplemental electrophotographic process – Exposure or charging
Reexamination Certificate
2008-07-01
2008-07-01
Royer, William J (Department: 2852)
Electrophotography
Supplemental electrophotographic process
Exposure or charging
C399S186000
Reexamination Certificate
active
11288528
ABSTRACT:
An image forming apparatus has a charge removing unit (31) between a transfer roller (11) for transferring a toner image from a surface of a photosensitive drum (4) to a transfer member and a charging unit (3) for electrostatically charging the surface of the photosensitive drum (4) approximately uniformly, with respect to a rotation direction of the photosensitive drum (4). The charge removing unit (31) includes LEDs (311) to irradiate the surface of the photosensitive drum (4) with charge-removing light. A support (312) supports the LEDs (311) approximately in a line along an axial direction of the photosensitive drum (4). A position setting mechanism (313) allows a position of the support (312) to be changed selectively in a direction orthogonal to the axis of the photosensitive drum (4). Thus, the image forming apparatus can suppress uneven charge-distribution in the axial direction of the photosensitive drum (4).
REFERENCES:
patent: 5065188 (1991-11-01), Kobayashi et al.
patent: 6658225 (2003-12-01), Thompson et al.
patent: 6678491 (2004-01-01), Kido et al.
patent: 8-272270 (1996-10-01), None
Casella Anthony J.
Hespos Gerald E.
Kyocera Mita Corporation
Royer William J
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