发明授权
US4986676A Printing head of the impact type 失效
打印头的冲击类型

Printing head of the impact type
摘要:
A printing head includes a plurality of printing levers, each having a front end portion and a rear end portion, with each printing lever being rotatable about its rear end portion. An electromagnetic drive is operable to individually drive the printing levers in a driving direction so as to apply a printing force to printing elements operated by the printing levers. Resilient springs operatively associated with the printing levers resiliently apply a return force to each of the printing levers in a return direction opposite to the driving direction. Stopper devices are disposed to be operatively engaged by each of the printing levers upon application of the printing force to thereby preclude contact between each of the printing levers and the electromagnetic drives upon application of the printing force.
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