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Title:
CHARGING ROLLER CLEANING MECHANISM, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2004264619
Kind Code:
A
Abstract:

To provide a charging roller cleaning mechanism of efficiently removing matters to be electrostatically stuck on the surface of an electrifying roller and maintaining a good cleaning performance over a long period.

As for the charging roller cleaning mechanism which is constituted by arranging at least an elastic layer on the outer periphery of a core bar and cleans the surface of the charging roller 2a for charging the surface of an image carrier 1, the cleaning mechanism is provided with a conductive brush roller 2b constituted of fibers of 0.1 to 20 deniers in thickness, 0.3 to 2.5 mm in length, and 7000 to 46000 pieces/cm2 in density, and the conductive brush roller 2b is provided with a mechanism of making the roller 2b have the same potential as that of the charging roller 2a when a bias is applied on the charging roller 2a.


Inventors:
YANAGIDA MASAHITO
NAGASHIMA HIROYASU
KUMAGAI NAOHIRO
KOIKE TOSHIO
SANPEI ATSUSHI
KAWASUMI MASANORI
MURAKAMI EISAKU
UCHITANI TAKESHI
OOJIYA ATSUYA
TOMITA MASAMI
SHINTANI TAKASHI
Application Number:
JP2003055090A
Publication Date:
September 24, 2004
Filing Date:
March 03, 2003
Export Citation:
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Assignee:
RICOH KK
International Classes:
G03G9/08; A46B7/10; A46B13/02; G03G9/087; G03G15/02; G03G21/00; (IPC1-7): G03G15/02; A46B7/10; A46B13/02; G03G9/08; G03G9/087
Attorney, Agent or Firm:
Yuuki Okuyama