| 摘要 |
PROBLEM TO BE SOLVED: To effectively improving the handling workability of a unit and to easily deal with the unit of a heavy weight as well. SOLUTION: The device has the unit 144 which is attachable and detachable to and form a second main body section 22 by building a reading section 82 therein and a positioning means 148 which positions the unit 144 to the second main body section 22. The unit 144 is provided with wheels 146.
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