Image forming unit having means for preventing a cleansing blade

Details Image forming unit having means for preventing a cleansing blade Image forming unit having means for preventing a cleansing blade

1989-10-24

1991-08-06

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355210, 355296, G03G 2100, G03G 1300

Patent

active

050381814

ABSTRACT:
A blade for cleaning an image holding member of an image forming unit is urged so as to contact the image holding member, and a member for obstructing the blade from contacting the image holding member by urged strength is arranged to release the obstruction. The member is further arranged so as to regulate returning action to the state of obstruction after the obstruction is released. Accordingly, when the blade is released from the state of obstruction by the obstruction member, the blade comes in contact with the image holding member by the urged strength and afterward it is kept in the state of contact since the obstructing function of the obstruction member is regulated.

REFERENCES:
patent: 4284345 (1981-08-01), Takashi et al.
patent: 4602864 (1986-07-01), Kimura et al.
patent: 4639122 (1987-01-01), Pease
patent: 4640608 (1987-02-01), Higaya et al.
patent: 4791454 (1988-12-01), Takahashi et al.
patent: 4891676 (1990-02-01), Davis et al.

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