| 摘要 |
PROBLEM TO BE SOLVED: To minimize eccentric differential either of a drive transmission member or a bearing member. SOLUTION: In a rotary supporting structure of a cylindrical body 1 for rotary supporting the cylindrical body 1, that is the rotary supporting structure of the cylindrical body provided with at least, either one of the drive transmission member 2 fitting to an end part outer periphery on the cylindrical body 1 or the bearing member 3, and a bore joining member 4 joining at least, either one of the drive transmission member 2 or the bearing member 3 by widening the end part bore of the cylindrical body 1 in the direction of outside diameter after engaged in the end part of the cylindrical body 1, and positioned in the end part inner side of the cylindrical body 1 corresponding to either one of this drive transmission member 2 or the bearing member 3. Then, the image forming device adopting this rotary supporting structure of the cylindrical body is made to be the object of this patent.
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