| 摘要 |
PROBLEM TO BE SOLVED: To prevent an inner structure from being damaged due to an insertion.SOLUTION: A loading mechanism includes: an outer chassis; a roller arm rotatably held on the outer chassis; a roller rotatably held at one end of the roller arm; and an up-and-down lever rotatably held on the outer chassis and having an arm part for depressing the roller. The roller arm has a stopper which is provided in a circumference of a holding part of the roller and which engages a tip of the arm when the roller arm rotates in a state where the arm part of the up-and-down lever is not depressing the roller. |
