| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly precise roller capable of equalizing a charging amount, a developing electric field, or the like of toner existing on recessed and projecting parts on the surface of the roller, and suppressing and preventing problems of fog, a void, a ghost, or the like, and an image forming device having it. SOLUTION: This highly precise roller has a semi-conductive elastic body layer 2 around a conductive shaft body 1, and satisfies 50<Tp(50%)<100 when a load length ratio of the surface of the elastic body layer 2 is assumed to be Tp(C) (C is cutting level %). |
