发明授权
US5044793A Hammer device having adjustable striking force 失效
具有可调打击力的锤装置

Hammer device having adjustable striking force
摘要:
A hammer device generates a magnetic moving force in a magnetic member by energizing a coil, whereby a hammer strikes a recording sheet to form a record thereon by means of its moving force, the striking force of the being capable of regulation by changing the relative position of the coil and the magnetic member without changing the position of the hammer.
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