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    Printing apparatus with paper positioning tractor means and escapement means
    2.
    发明授权
    Printing apparatus with paper positioning tractor means and escapement means 失效
    具有纸张定位拖拉机手段和遮盖手段的打印装置

    公开(公告)号：US3987884A

    公开(公告)日：1976-10-26

    申请号：US261452

    申请日：1972-06-09

    申请人： Edward J. Buxton

    发明人： Edward J. Buxton

    IPC分类号： B41J1/32 ,  B41J11/30 ,  B41J19/90 ,  B41J15/00

    CPC分类号： B41J1/32 ,  B41J11/30 ,  B41J19/90

    摘要： The invention is directed to a highspeed digital print-out apparatus. The apparatus involved is provided with tractors which move the paper in a first direction past a stationary print-out wheel which in conjunction with a print hammer imprints preselected indicia upon the paper. The paper is movable in the reverse or third direction, again by the tractors, to initiate a new line of indicia and in a second direction normal to said forward and reverse directions to provide spacing between adjacent lines. There is also provided a reversing mechanism for moving the paper in a fourth direction reverse to the second direction to position the paper for the start of a new sheet.