Charging device, process cartridge and image forming device

Details Charging device, process cartridge and image forming device Charging device, process cartridge and image forming device

2005-05-03

2005-05-03

Beatty, Robert (Department: 2852)

Electrophotography

Image formation

Charging

Reexamination Certificate

active

06889023

ABSTRACT:
A charging unit, used for an image forming device, is provided, which comprises a conductive base, and a single-layered resistant layer, covering on a surface of the conductive base. The charging unit is in contact with an electrified body, and by applying a voltage to the conductive base, a charging process is performed in a contact charging manner. Furthermore, the single-layered resistant layer has a thickness equal to or below 0.7 mm, and has a surface resistance between 1×103(Ω/□) and 1×1015(Ω/□). Therefore, a charging roller can be made with a very simple structure of the single-layered resistant layer surrounding the core metal, so that a cheap conductive roller can be provided. In addition, the charging unit can be spaced from the electrified body by a small gap and the resistant layer can include nylon.

REFERENCES:
patent: 4461663 (1984-07-01), Tachibana et al.
patent: 5486906 (1996-01-01), Tsuneeda et al.
patent: 5532795 (1996-07-01), Tatsumi et al.
patent: 5534344 (1996-07-01), Kisu et al.
patent: 5567494 (1996-10-01), Ageishi et al.
patent: 5678125 (1997-10-01), Kutsuwada et al.
patent: 5815767 (1998-09-01), Kutsuwada et al.
patent: 5851657 (1998-12-01), Yasuno et al.
patent: 5887224 (1999-03-01), Mizuishi et al.
patent: 5915143 (1999-06-01), Watanabe et al.
patent: 5999776 (1999-12-01), Abe et al.
patent: 6006050 (1999-12-01), Watanabe et al.
patent: 6055388 (2000-04-01), Watanabe et al.
patent: 6055394 (2000-04-01), Suda et al.
patent: 6097914 (2000-08-01), Tanaka et al.
patent: 6101351 (2000-08-01), Suda et al.
patent: 6173143 (2001-01-01), Hirota et al.
patent: 6256465 (2001-07-01), Yoshinaga et al.
patent: 6336013 (2002-01-01), Suda et al.
patent: 6381432 (2002-04-01), Hattori
patent: 6463237 (2002-10-01), Suda et al.
patent: 6560414 (2003-05-01), Suda et al.
patent: 7-244417 (1995-09-01), None
patent: 09011362 (1997-01-01), None
patent: 09160352 (1997-06-01), None
patent: 10-48910 (1998-02-01), None
patent: 2000-75601 (2000-03-01), None

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