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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Chiba; Masako
Address:
Urawa, JP
No. of patents:
4
Patents:












Patent Number Title Of Patent Date Issued
5881344 Image forming apparatus and charging device thereof March 9, 1999
An electrophotographic image forming apparatus using a charge roller for uniformly charging the surface of a photoconductive element, or image carrier, during image formation, and a charging device having the charge roller. The charging efficiency is enhanced, and a uniform charge di
5786091 Charge roller for an image forming apparatus July 28, 1998
In a charging device included in an image forming apparatus for charging an image carrier uniformly, a charge roller has an elastic layer and a surface layer. The elastic layer is made of a substance having a medium electric resistance and having no conductive particles dispersed therein
5689770 Image forming apparatus which maintains a temperature of a charge roller November 18, 1997
An electrophotographic image forming apparatus using a charge roller for uniformly charging the surface of a photoconductive element, or image carrier, during image formation, and a charging device having the charge roller. The charging efficiency is enhanced, and a uniform charge di
5479243 Image forming apparatus and charging device thereof December 26, 1995
An electrophotographic image forming apparatus using a charge roller for uniformly charging the surface of a photoconductive element, or image carrier, during image formation, and a charging device having the charge roller. The charging efficiency is enhanced, and a uniform charge di










 
 
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