Charging roller for electrophotographic apparatus and method for manufacturing charging roller for electrophotographic apparatus

The invention provides a charging roller for an electrophotographic device and a method for manufacturing the charging roller for the electrophotographic device, which can suppress charge attenuation from the roller surface caused by a non-uniform resistance portion and can obtain a good image. The...

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Bibliographic Details
Main Authors MIYAGAWA SHIMPEI, SAITO YOSHIHIRO
Format Patent
LanguageChinese
English
Published 24.11.2023
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:The invention provides a charging roller for an electrophotographic device and a method for manufacturing the charging roller for the electrophotographic device, which can suppress charge attenuation from the roller surface caused by a non-uniform resistance portion and can obtain a good image. The charging roller (10) for an electrophotographic device is provided with a shaft body (12), an elastic body layer (14) formed on the outer peripheral surface of the shaft body (12), and a surface layer (16) formed on the outer peripheral surface of the elastic body layer (14). The elastomer layer (14) comprises a high-resistance first phase (14a) having a surface resistance value of 1.6 * 10 < 14 > to 8.8 * 10 < 15 > Omega * cm, and a low-resistance second phase (14b) having a surface resistance value of 1.3 * 10 < 2 > Omega * cm to 4.9 * 10 < 3 > Omega * cm, and the second phase (14b) contains both carbon black (A) having a DBP absorption amount of 115 cm < 3 >/100 g to 160 cm < 3 >/100 g and carbon black (B) havin
Bibliography:Application Number: CN202280028015