| 摘要 |
PROBLEM TO BE SOLVED: To provide a charging member which can be mounted on a high-speed/high-durability electrophotographic apparatus and is free from poor charging and doesn't require the use of a charging member cleaner and doesn't bring about abnormal images caused by sticking of toner or the like to stably form good images for a long period and to provide a electrifying device provided with the charging member. SOLUTION: A charging member 2 for charging an object to be charged has a surface hardness of≥40°, and B/A=Sa wherein A is a sum of actual contact areas in a nip part between the charging member and the object and A is an area of the entire nip part is increased 1.1 to 10 times when a contact force f1 to the object of the charging member is increased from 0.49N to 19.6N, that is, äSa(19.6N)/Sa(0.48N)} is 1.1 to 10. The charging device is provided with this charging member. COPYRIGHT: (C)2006,JPO&NCIPI
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