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    Printer having a permanent magnet hammer mechanism
    1.
    发明授权
    Printer having a permanent magnet hammer mechanism 失效
    具有永久磁铁锤机械的打印机

    公开(公告)号：US3606834A

    公开(公告)日：1971-09-21

    申请号：US3606834D

    申请日：1969-06-24

    申请人： MOHAWK DATA SCIENCES CORP

    发明人： NYMAN ALEXANDER ,  CURTISS ROBERT H

    IPC分类号： B41J1/46 ,  B41J9/38 ,  G06K15/07 ,  B41J5/00

    CPC分类号： B41J9/38

    摘要： A PRINTER HAVING A HAMMER MECHANISM CONTAINING HAMMERS WHICH ARE SELECTIVELY AND ELECTRODYNAMICALLY ACTIVATED UPON SELECTIVE ENERGIZATION OF ACTIVATING COILS ATTACHED TO THE HAMMERS. EACH ACTIVATING COIL IS LOCATED BETWEEN A PAIR OF POLE PIECES OF OPPOSITE POLARITIES WHICH ABUT THE OPPOSITE POLES OF A THIN PERMANENT CERAMIC MAGNET MAGNETIZED THROUGH ITS THIN DIMENSION. THE MAGNETS ARE U-SHAPED AS ARE THOSE POLE PIECES ABUTTING THE OUTSIDE SURFACES OF THE MAGNETS. EACH HAMMER COMPRISES AN ACTIVATING AND A PELLET PORTION DISPOSED AT AN ANGLE TO EACH OTHER AND SUPPORTED WITHIN THE HAMMER MECHANISM BY A U-SHAPED SPRING. EACH LEG OF THE U-SHAPED SPRING SUPPORTS AND IS LOCATED PERPENDICULAR TO ONE PORTION OF THE HAMMER.

    Apparatus for producing incremental movement, particularly for moving a print hammer module parallel to a print line
    3.
    发明授权
    Apparatus for producing incremental movement, particularly for moving a print hammer module parallel to a print line 失效
    用于生产增量运动的装置，特别是用于将打印锤模块平行移动到打印线

    公开(公告)号：US3618514A

    公开(公告)日：1971-11-09

    申请号：US3618514D

    申请日：1969-06-24

    申请人： MOHAWK DATA SCIENCES CORP

    发明人： NYMAN ALEXANDER ,  CURTISS ROBERT H

    IPC分类号： B41J9/12 ,  B41J19/18 ,  B41J19/30 ,  G06K15/06 ,  H02K41/02 ,  B41J9/04

    CPC分类号： B41J9/12

    摘要： Apparatus within a printer for incrementally moving a hammer module parallel to a line on which characters are being printed. The hammer module is carried across the paper by a coil which moves within a track extending parallel to the print line and formed by parts of pole pieces arranged to provide magnetic fields spaced along and extending across the track in alternating opposite directions. A U-shaped ceramic permanent magnet encloses portions of a pole piece of one polarity while portions of the pole piece of the other polarity surround the outside surface of the U-shaped magnet. Energization of the coil in alternate directions causes the hammer module to move in successive increments.