| 摘要 |
PROBLEM TO BE SOLVED: To simplify a constitution by arranging a mechanism to lock a door section by rotating in a first rotating direction, a mechanism to press a roller to a platen by rotating in a second rotating direction opposite to the first rotating direction, and an elastic member which urges the lock mechanism and the roller pressing mechanism. SOLUTION: When a shaft for a lock reaches on the top of notches 80AY and 80BY of corresponding bent sections 80A and 80B of a lock arm 80, the lock arm 80 rotates in the direction shown by the arrow (b) by the elastic force of compressive coil springs 82A and 82B. Then, the shaft for the lock is fitted in the corresponding notches 80AY and 80BY. Then, the shaft for the lock is held in the notches 80AY and 80BY, and thus, a door section 25 is locked under a closed state. Also, in this case, the door lock and the roller arm 81 of a roller pressing section 39 is rotated in the direction shown by the arrow (c) by the elastic force of the compressive coil springs 82A and 82B, and a press roller 38 is pressed to a platen 28.
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