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    • 2. 发明授权
    • Printer head for serial dot printer
    • 串口打印机打印头
    • US4368353A
    • 1983-01-11
    • US241054
    • 1981-03-06
    • Hirokazu AndoYasuo OhmoriKazumasa FukushimaMitsuo IwamaTsunematsu Takahashi
    • Hirokazu AndoYasuo OhmoriKazumasa FukushimaMitsuo IwamaTsunematsu Takahashi
    • H01F7/04B41J2/24B41J2/28H01F7/14B41J33/00B41J3/12
    • B41J2/28B41J2/24
    • A high operational speed print head for mosaic printing is provided which has a plurality of print needles positioned on a straight line, each being selectively driven toward a piece of paper through an ink ribbon. The printer head comprises a cylindrical permanent magnet ring magnetized in the axial direction; a circular bottom plate covering the bottom of the permanent magnet; and a plurality of electromagnets each having a center core and a coil wound around the core positioned on a circle on said bottom plate so as to be surrounded by the permanent ring magnet. A yoke provides a closed magnetic path with the permanent ring magnet, the bottom plate and each of the electromagnets. A plurality of moving bodies equal in number to the number of electromagnets are provided, each having at least an elongated armature overlying the core of the related electromagnet and composing a part of said closed magnetic path. A leaf spring supports the armature and is fixed to the yoke, and a print needle is mounted perpendicular to the elongated armature.
    • 提供了一种用于马赛克印刷的高操作速度打印头,其具有位于直线上的多个打印针,每个打印针通过墨带被选择性地朝向一张纸驱动。 打印头包括沿轴向磁化的圆柱形永磁体环; 覆盖永磁体底部的圆形底板; 以及多个电磁体,每个电磁体具有围绕位于所述底板上的圆周上的芯的中心芯和线圈,以被永磁环磁铁包围。 轭提供与永久环形磁铁,底板和每个电磁体的闭合磁路。 提供了多个数量等于电磁体数量的移动体,每个移动体具有至少一个细长的电枢,覆盖相关电磁体的磁芯并构成所述闭合磁路的一部分。 片簧支撑电枢并固定到轭,并且印刷针垂直于细长衔铁安装。