Electrophotography – Having particular structure – Modular or displaceable
Patent
1996-09-16
1997-09-09
Lee, S.
Electrophotography
Having particular structure
Modular or displaceable
399159, 399176, 399318, G03G 1500
Patent
active
056665962
ABSTRACT:
A process cartridge of an image forming device in which a driving gear for driving a charging roller and a transfer roller is not utilized. The process cartridge of an image forming device, comprising: a developing unit having a photosensitive drum and a charging roller for charging the photosensitive drum; a driving gear to which driving force is delivered, the driving gear providing a driving force for rotating the photosensitive drum; and friction portions for driving the charging roller and transfer roller, the friction portions being provided on opposite sides of an outer circumferential surface of the photosensitive drum, wherein the charging roller and the photosensitive drum are provided to be in contact with each other and the transfer roller and the photosensitive drum are provided to be in contact with each other, so that the charging roller and transfer roller are driven by a friction force caused by rotation of the photosensitive drum.
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patent: 5083144 (1992-01-01), Altmann
patent: 5293199 (1994-03-01), Saito et al.
patent: 5321469 (1994-06-01), Ahn
patent: 5321473 (1994-06-01), Azami
patent: 5515154 (1996-05-01), Hasegawa et al.
Bushnell Esq. Robert E.
Lee S.
Samsung Electronics Co,. Ltd.
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