Cartridge for use in an image forming apparatus having an...

Details Cartridge for use in an image forming apparatus having an... Cartridge for use in an image forming apparatus having an...

2007-12-04

2007-12-04

Gray, David M. (Department: 2852)

Electrophotography

Diagnostics

Consumable

C399S027000, C399S111000

Reexamination Certificate

active

11434721

ABSTRACT:
A cartridge for use in an image forming apparatus comprises a charge roller to which a predetermined voltage is applied; a photosensitive drum charged by the charge roller by rotating in contact with the charge roller; an electronic element for wireless communication which is positioned at a predetermined distance from a contact line between the charge roller and the photosensitive drum; and a shielding member made of a metal which is interposed between the contact line and the electronic element to form a shielding area for shielding electromagnetic waves generated from the contact line, the electronic element being positioned within the shielding area except for boundary portions of the shielding area. As a result, the cartridge is able to efficiently shield an electronic element from electromagnetic waves generated between a photosensitive drum and a charge roller.

REFERENCES:
patent: 4062061 (1977-12-01), Batchelor et al.
patent: 5697028 (1997-12-01), Kobayashi et al.
patent: 6438327 (2002-08-01), Kimizuka et al.
patent: 2003/0006902 (2003-01-01), Tullis et al.
patent: 2003/0161644 (2003-08-01), Yokoi et al.
patent: 2001-194966 (2001-07-01), None
patent: 2002-328580 (2002-11-01), None
patent: 2002-341703 (2002-11-01), None
English translation of 2002-328580.
Office Action issued Jul. 21, 2006 by the Korean Intellectual Property Office re: Korean Patent Application No. 2005-52079 (3 pp).

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