| 摘要 |
PCT No. PCT/CH85/00176 Sec. 371 Date Aug. 19, 1986 Sec. 102(e) Date Aug. 19, 1986 PCT Filed Dec. 16, 1985 PCT Pub. No. WO86/03718 PCT Pub. Date Jul. 3, 1986.The printer comprises a series of needles (1) each associated to an electric lead (8) which extends in the gap of a permanent magnet (11). The extremities of each lead are fixed to respective supports (9,10) and are selectively connected to a current source to make a current (I) circulate in said leads so that, in the presence of a magnetic field in the air gap, a force (F) acts upon the lead (8) which communicates to the needle (I) an elongation (e) in the direction of the surface to be printed.
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