Discharge method for electrophotographic process unit...

Electrophotography – Machine operation – Electrical connection

Reexamination Certificate

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Details

C399S111000, C399S116000

Reexamination Certificate

active

07149452

ABSTRACT:
When a sheet jams in an image forming machine with a detachable unit having at least an image carrier device, it is necessary to detach the unit to remove the sheet when the image carrier device is charged with electric charge. When the unit is detached and re-attached, spark discharging may occur inducing noise upon a contact of an electrically conductive shaft of the image carrier device to a ground conductor. The present invention prevents the occurrence of such a problem by making the unit pass near a charge eliminating member, when the unit is detached from the image forming machine, extracting the unit to an outside of the machine, and making the unit pass near the charge eliminating member, when the unit is attached in machine.

REFERENCES:
patent: 5537189 (1996-07-01), Imes
patent: 5581325 (1996-12-01), Tsuda et al.
patent: 5893657 (1999-04-01), Matsuzawa
patent: 5907751 (1999-05-01), Kawaguchi et al.
patent: 5930560 (1999-07-01), Sawaki
patent: 6272299 (2001-08-01), Numagami et al.
patent: 6810221 (2004-10-01), Meyer et al.
patent: 2004/0213596 (2004-10-01), Meyer et al.
patent: 2004/0218944 (2004-11-01), Kawaguchi et al.
patent: 9090690 (1997-04-01), None

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