Positioning member for a separation electrode mounted on a clams

Details Positioning member for a separation electrode mounted on a clams Positioning member for a separation electrode mounted on a clams

1993-08-10

1994-09-06

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355210, 355315, G03G 1500

Patent

active

053452950

ABSTRACT:
Disclosed is an image forming apparatus in which separation unit for electrostatically separating a sheet from a latent image carrier is provided on an openable and closable frame. This image forming apparatus comprises a feeding path for feeding a sheet on which an image is to be formed; an endless latent image carrier; image forming unit for forming a toner image on the latent image carrier; transfer unit for transferring the toner image on the latent image carrier onto the sheet that is conveyed in the feeding path; separation unit for supplying electric charges of an opposite polarity to that of electric charges on a back of the sheet to the back of the sheet in the feeding path at a position downstream of the transfer unit, thereby separating the sheet from the latent image carrier; an openable and closable frame on which at least the separation unit is movably provided and which is to be opened to free the feeding path; a main body frame on which at least the latent image carrier is provided; and a positioning member, provided on the main body frame, for positionin the separation unit by engagement with the separation unit when the frame is closed. With this structure, even when the frame is open or closed, the precision of the position of the separation unit with respect to the latent image carrier can be improved, thus ensuring stable sheet separation.

REFERENCES:
patent: 4699499 (1987-10-01), Hoshika et al.
patent: 4739363 (1988-04-01), Hoshika et al.
patent: 4875077 (1989-10-01), Takamatsu et al.
patent: 5047801 (1991-09-01), Haneda et al.
patent: 5105221 (1992-04-01), Takahashi et al.
patent: 5132654 (1992-07-01), Walgrove, III et al.
patent: 5160963 (1992-11-01), Haneda et al.

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