| 摘要 |
PROBLEM TO BE SOLVED: To provide a carrier member which prevents fouling of an electrostatic charging member by paper dust or the like and makes the lifetime of the electrostatic charging member longer, a carrier device provided with an electrostatic charging device which charges a recording medium to positive and negative polarity (inclusive of a non-charged part) alternately, and an image forming device which stabilizes the carrying accuracy by stabilizing the electrification potential of the carrier member and improves the carrying accuracy to obtain high picture quality. SOLUTION: An electrostatic charging device for a carrier member to charge an carrier member 16 is provided with an electrostatic charging member for carrier member 18 which is disposed opposite to the surface of the carrier member 16 and charges the surface of the carrier member 16 to a prescribed polarity, a power source 15 which impresses voltage on the electrostatic charging member for the carrier member, and a driving carrier means which moves the charged carrier member. COPYRIGHT: (C)2005,JPO&NCIPI
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