| 摘要 |
PROBLEM TO BE SOLVED: To mount a hand scanner to a main body with a highly accurate positional relationship. SOLUTION: While a scanner 201 is parted, a holder 301 is turned around a shaft 120 with a spring force to be held while and inserting direction is directed upward. A user slides the scanner 201 toward the holder 301 while touching the scanner 201 onto a guide face 309 and is contained therein. Since the position of the scanner 201 is decided by positioning faces 402, 403, 404 or the like provided to the main body, the positional relation between the contained scanner 201 and the carrying part of the main body is always made constant.
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