| 摘要 |
In the printer, each printing hammer is composed of a pair of electroconductive elastic members arranged parallel to the axis of a type drum and is provided with paramagnetic material at its head. The hammer, when not used, is kept pulled in the non-printing position with the paramagnetic material attracted by a permanent magnet to accumulate mechanical energy in the elastic members. When the accumulated energy is discharged by an electromagnet provided at each hammer head including the paramagnetic material, printing operation is executed. Finishing the printing operation, the hammers return quickly to their home positions by the permanent magnet attraction force. A type drum and hammer heads are composed of an organic resilient substance.
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