| 摘要 |
PROBLEM TO BE SOLVED: To prevent deformation of a main frame from adversely affecting a belt unit.SOLUTION: A belt unit 20 is positioned with respect to a drawer 15. The belt unit 20 is not directly positioned with respect to the main frame. Even if the main frame is deformed, the deformation is prevented from adversely affecting the belt unit 20 directly. The belt unit 20 is prevented from being deformed significantly along with the deformation of the main frame 17, accordingly. Skew of a belt 13 can be prevented, while preventing the belt 13 from being damaged early. |
