Image forming apparatus

Details Image forming apparatus Image forming apparatus

1990-01-25

1991-05-28

Arnold, Bruce Y.

Photocopying

Contact printing

Light boxes

355211, 355232, G02B 2610, G03G 500

Patent

active

050188062

ABSTRACT:
An optical scanner comprises a deflector for deflecting a light from a light source; an elongated cylindrical lens for correcting a shift in optical path; a photosensitive drum for performing a scanning operation thereon with respect to the light transmitted from the deflector through the cylindrical lens; and an integrally formed support device for positioning the cylindrical lens and the photosensitive drum. The cylindrical lens is held by a portion of a member for supporting the photosensitive drum. The support device comprises bearing recessed portions for receiving shaft portions disposed in the photosensitive drum at both ends thereof. The support device further comprises an elongated window frame for fixing the cylindrical lens thereto. The cylindrical lens is positioned in a predetermined position below the photosensitive drum so as to hold a parallel relation therebetween.

REFERENCES:
patent: 4335950 (1982-06-01), Gunzelmann et al.
patent: 4470689 (1984-09-01), Nomura et al.
patent: 4598993 (1986-07-01), Mizutani
patent: 4755846 (1988-07-01), Kobayashi
patent: 4873548 (1989-10-01), Kobayashi et al.

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