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    Power-driven typewriter
    1.
    发明授权
    Power-driven typewriter 失效
    动力式TYPEWRITER

    公开(公告)号：US3904015A

    公开(公告)日：1975-09-09

    申请号：US30436572

    申请日：1972-11-07

    申请人： BOYDEN ROBERT E ,  WATANABE RII

    发明人： BOYDEN ROBERT E ,  WATANABE RII

    IPC分类号： B41J1/40 ,  B41J1/60 ,  B41J7/52 ,  B41J23/04 ,  B41J29/42 ,  B41J33/26 ,  B41J35/28 ,  B41J33/14

    CPC分类号： B41J33/26 ,  B41J7/52

    摘要： A power-driven typewriter comprising a shiftable carrier supporting a rotatable and axially movable, flexible type drum having a plurality of type characters therearound. Type keys, when depressed, each condition one each of two groups of actuators and cause operation of a drive member to operate the two conditioned actuators, one of which is effective to rotate the type drum from any position to a new position and the other is effective to raise the type drum to a selected position to thus align a type character corresponding to the key depressed at the printing point. Means are provided to dampen torsional oscillation of the type drum and its drive mechanism prior to printing. Readily interchangeable ink transfer ribbon cassettes for both fabric and for film ribbons are provided. Also, type drums having different type characters or type styles may be readily interchanged.