Image forming apparatus with blank exposure means

Details Image forming apparatus with blank exposure means Image forming apparatus with blank exposure means

1994-02-28

1997-09-09

Braun, Fred L.

Electrophotography

Image formation

Exposure

G03G 1504

Patent

active

056666101

ABSTRACT:
An image forming apparatus includes a movable photosensitive member, a slit for imagewise exposure of said photosensitive member to light in a slit exposure area having a width in a direction of movement of said photosensitive member, and a movable reflecting member for forming a non-image area on said photosensitive member by light from said reflecting member. When blank exposure is effected, the reflecting member is disposed at a first position or a second position. When the reflecting member is disposed at the first position, the light from the reflecting member is substantially condensed on or adjacent to an upstream end of the exposure area width on the photosensitive member with respect to the movement direction of the photosensitive member, and an area before an image area on the photosensitive member in which an image is formed by the slit exposure means is exposed to the light. When the reflecting member is disposed at the second position, the light from the reflecting member is substantially condensed on or adjacent a downstream end of the exposure area width on the photosensitive member, with respect to the movement direction of the photosensitive member, and an area after the image area is exposed to the light.

REFERENCES:
patent: 4087170 (1978-05-01), Sawaoka et al.
patent: 4333130 (1982-06-01), Mochizuki et al.
patent: 4627703 (1986-12-01), Suzuki et al.
patent: 4894682 (1990-01-01), Kondo et al.

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