Electrophotography – Image formation – Charging
Reexamination Certificate
2006-11-21
2006-11-21
Gray, David M. (Department: 2852)
Electrophotography
Image formation
Charging
Reexamination Certificate
active
07139512
ABSTRACT:
A charging device includes a charging member disposed opposite to a surface of an image carrier. The image carrier is charged by applying a voltage to the charging member, and the charging member includes a substrate and a resistor layer thereon. The resistor layer is disposed with two spacers contacting with the image carrier, so that a gap is created between the image carrier and the resistor layer between the two spacers, wherein width variation of the gap with time is prevented. The end portions of the resistor layer of the charging member protrude above the resistor layer between them, and the spacers are constituted by protrudent fractions of the end portions of the resistor layer.
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Maruta Takayuki
Namiki Akiyo
Gleitz Ryan
Gray David M.
Ricoh & Company, Ltd.
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