| 摘要 |
PROBLEM TO BE SOLVED: To reduce the wear of a contact part by dirt in a mechanism for opening and closing a shutter by allowing a member other than the shutter to come into contact therewith for moving. SOLUTION: A dirt cleaning part for sweeping away dirt from the surface of the shutter before the shutter comes into contact with the member other than the shutter is installed on the member other than the shutter. Swept dirt is fallen into a dirt discharge groove provided in the shutter, and removed from the surface of the shutter, whereby a long life shutter open/close mechanism with excellent wear resistance can be provided at a low cost, and the reliability of a magnetic stripe processing mechanism can be increased.
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