Image forming apparatus having a disordering and charging device

Details Image forming apparatus having a disordering and charging device Image forming apparatus having a disordering and charging device

1992-06-11

1993-03-23

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355219, 355270, 355296, G03G 1506

Patent

active

051968924

ABSTRACT:
An image forming apparatus has a developing and cleaning device for developing a latent image formed on an image bearing member with a developing agent and for simultaneously removing the developing agent remaining on the image bearing member, a transfer device for transferring the developed image on the image bearing member to a recording medium and a disordering and charging device for disordering any developing agent remaining on the image bearing member after transfer of the developed image by the transfer device and for simultaneously charging the image bearing member. The disordering and charging device has a first disordering and charging member for disordering the residual developing agent and for charging the surface of the image bearing member at a first charge potential and a second disordering and charging member for disordering the developing agent disordered by the first disordering and charging member and for charging the surface of the image bearing member at a second charge potential. Thereby, the disordering and charging device of the present invention can uniformly charge the entire surface of the image bearing member and sufficiently disorder any residual developing agent remaining on the image bearing member.

REFERENCES:
patent: 3617123 (1971-11-01), Emerson
patent: 4387980 (1983-06-01), Ueno et al.
patent: 4469435 (1984-09-01), Nosaki et al.
patent: 4769676 (1988-09-01), Mukai et al.
patent: 5055882 (1991-10-01), Fushimi
patent: 5066982 (1991-11-01), Hosoya et al.
patent: 5119138 (1992-06-01), Oda et al.
patent: 5122838 (1992-06-01), Kohyama

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