| 摘要 |
There is provided a thermal printer ( 1 ) including: a main body frame ( 2 ); a thermal head ( 4 ) mounted to the main body frame ( 2 ); a platen roller ( 6 ) disposed to be opposed to a printing surface ( 4 a) of the thermal head ( 4 ), for sandwiching a thermal paper ( 15 ) with the thermal head ( 4 ) to feed the thermal paper ( 15 ); a lock arm ( 5 ) swingably mounted to the main body frame ( 2 ), for locking the platen roller ( 6 ) with the main body frame ( 2 ) by pressing a shaft bearing ( 11 ) which rotatably supports the platen roller ( 6 ) against the thermal head ( 4 ); a swing arm ( 10 ) that supports the shaft bearing ( 11 ) of the platen roller ( 6 ), and swings between a lock position by the lock arm ( 5 ) and a release position apart from the lock arm ( 5 ); and a lever ( 16 ) movably provided to the swing arm ( 10 ), for releasing a locked state of the platen roller ( 6 ) by the lock arm ( 5 ) by an external force applied to a force point ( 18 ), in which a direction in which the force point ( 18 ) of the lever ( 16 ) moves when the locked state by the lock arm ( 5 ) is released is same as a swinging direction of the swing arm ( 10 ).
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