Charging device and image forming apparatus

Details Charging device and image forming apparatus Charging device and image forming apparatus

2011-01-25

2011-01-25

Ngo, Hoang (Department: 2852)

Electrophotography

Image formation

Charging

C399S173000

Reexamination Certificate

active

07877045

ABSTRACT:
There is provided a charging device having high durability, of which controllability of charged potential of a photoreceptor is hardly impaired even with a some amount of contaminants such as a toner so that control of charged potential of a photoreceptor can be stably carried out to fall in an appropriate range over a long period of time, and moreover which is inexpensive. As a grid electrode, one prepared by forming a composite plated layer composed of three layers of an Sn plated layer, an Sn—Co plated layer and a Ni plated layer is used. More preferably, an upper layer is an Sn plated layer, an intermediate layer is an Sn—Co plated layer and a lower layer is a Ni plated layer.

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patent: 7567771 (2009-07-01), Ino
patent: 2007/0217822 (2007-09-01), Deguchi et al.
patent: 11-040316 (1999-02-01), None
patent: 2006-113531 (2006-04-01), None
patent: 2007-256397 (2007-10-01), None
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