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    • 7. 发明授权
    • System for driving print wires for printers
    • 用于打印打印机打印线的系统
    • US4302115A
    • 1981-11-24
    • US102433
    • 1979-12-11
    • Makoto YasunagaToshio Kurihara
    • Makoto YasunagaToshio Kurihara
    • B41J2/225B41J2/27B41J2/275B41J3/12
    • B41J2/275
    • A print wire driver for dot matrix impact printers comprises a pair of yokes made of magnetic material, a solenoid disposed between the yokes, an armature extending through the solenoid, and a print wire connected to the end of the armature. One of the yokes has first and second projected yoke ends, the other has third and fourth yoke ends, which are opposed to each other. The solenoid is disposed between the projected yoke ends. Between the yokes, a permanent magnet is provided to magnetize both yokes in reverse polarity with each other. The armature and four yoke ends are so arranged as to make two magnetic circuits, one of which is the path connecting the first yoke end, armature and fourth yoke end, and the other is the path connecting the second yoke end, armature and third yoke end. The solenoid is excited alternately in polarity to alternately magnetize the armature. Thus, the armature is reciprocated by the attractive and repulsive forces of the magnetic circuit to drive the print wire.
    • 用于点阵冲击打印机的打印线驱动器包括由磁性材料制成的一对轭,设置在轭之间的螺线管,延伸穿过螺线管的电枢以及连接到电枢端部的印刷线。 轭中的一个具有第一和第二投射磁轭端,另一个具有彼此相对的第三和第四磁轭端。 螺线管设置在突出的轭架末端之间。 在轭之间,提供永磁体以使两个磁轭彼此相反极化。 电枢和四个磁轭端被布置为制造两个磁路,其中之一是连接第一磁轭端,电枢和第四磁轭端的路径,另一个是连接第二磁轭端,电枢和第三磁轭的路径 结束。 螺线管交替地激励极性,以交替地磁化电枢。 因此,电枢通过磁路的吸引力和排斥力往复运动以驱动印刷线。