Image forming apparatus

Details Image forming apparatus Image forming apparatus

1992-06-22

1993-06-22

Grimley, A. T.

Photocopying

Contact printing

Light boxes

346160, 355200, 355210, 358296, G03G 1506

Patent

active

052219437

ABSTRACT:
An image-forming apparatus includes an image-forming unit detachably attached to a body of the apparatus, a holding member attached to the unit, and an engaging member attached to the body. The unit has a photosensitive member rotatably in a first rotary axis, and a roller member rotatably in a second rotary axis. The holding member has a first holding portion for holding the first rotary axis, a second holding portion for holding the second rotary axis, and a positioning member, whereby the photosensitive member and the roller member is held at specific intervals in the image-forming unit. The engaging member brings into engagement with the positioning member when the image-forming unit is attached to the body, whereby the image-forming unit is positioned to the body. A method, in the apparatus, includes the steps of attaching the holding member to the unit; holding the photosensitive member and the roller in the unit at specific intervals by the holding member; attaching the positioning member to the body; and contacting the positioning member with the holding member when the unit is attached to the body, whereby the unit is positioned to the body.

REFERENCES:
patent: 4128079 (1978-12-01), Suzuki
patent: 4571060 (1986-02-01), Bares
patent: 4575221 (1986-03-01), Onoda et al.
patent: 4588280 (1986-05-01), Ogawa et al.
patent: 4634264 (1987-01-01), Takahashi
patent: 4785319 (1988-11-01), Fujino et al.
patent: 4791454 (1988-12-01), Takahashi et al.
patent: 4876572 (1989-10-01), Nagatsuna
patent: 4926219 (1990-05-01), Hirasawa et al.

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