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    Impact printer having wear-resistant platings on hammer springs and pole piece tips
    8.
    发明授权
    Impact printer having wear-resistant platings on hammer springs and pole piece tips 失效
    冲击打印机在锤子弹簧和极片尖端上具有耐磨电镀

    公开(公告)号：US4790674A

    公开(公告)日：1988-12-13

    申请号：US69034

    申请日：1987-07-01

    申请人： Robert A. Kleist ,  Norman E. Farb ,  John S. Kinley

    发明人： Robert A. Kleist ,  Norman E. Farb ,  John S. Kinley

    IPC分类号： B41J2/245 ,  B41J2/28 ,  B41J9/127 ,  C25D3/04 ,  F16F1/02 ,  F16F1/18 ,  B41J3/02

    CPC分类号： F16F1/18 ,  B41J9/127 ,  F16F1/02

    摘要： In a dot matrix line printer in which a plurality of hammer springs mounted along the length of an elongated reciprocating hammerbank are selectively released or fired to impact dot printing impact tips mounted thereon against a print paper through a length of ink ribbon to print dots, the wear that would otherwise occur each time one of the hammer springs rebounds back into contact with a pair of pole pieces against which the hammer spring resides when in its retracted position is greatly minimized by chromium masses plated on the tip of the hammer spring and on the tips of the pole pieces. Chromium platings on each hammer spring are confined to the end of the spring and comprise either a pair of masses adjacent the different pole tips or a single mass encompassing both pole tips. The chromium masses are of convex contour and of hexavalent chromium composition to provide the masses with hard and smooth surfaces that slide over and do not abrade one another upon impacting.

    摘要翻译： 在点矩阵线打印机中，沿着细长的往复式敲击锤的长度安装的多个锤弹簧被选择性地释放或点火，以将安装在其上的打印冲击尖端穿过一段墨带打印点， 否则，当弹簧弹簧中的一个弹回弹回到与锤弹簧所在的一对极片处于其缩回位置时所产生的磨损大大地被镀在锤子弹簧尖端上的铬质量块所抵消， 极片的尖端。 每个锤弹簧上的铬电镀被限制在弹簧的端部，并且包括邻近不同极尖的一对质量或包围两个极尖的单个质量块。 铬质量具有凸形轮廓和六价铬组成，以使质量具有滑动并且在撞击时彼此不磨损的硬且光滑的表面。