| 摘要 |
A rotation supporting mechanism for rotating a main body and a cover in a plane direction while overlapping the cover from a closed position at which the main body and the cover are overlapped and closed, includes a pivot portion forming an axis of a rotation of the plane direction, an eccentric cam pivoted to the pivot portion and rotated eccentrically in the plane direction, and a pressing means brought into contact with the eccentric cam so as to press the eccentric cam. A rotation smoothening member smoothening a rotation is interposed between the pivot portion and the eccentric cam.
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