公开(公告)号：US5995128A

公开(公告)日：1999-11-30

申请号：US282494

申请日：1999-03-31

申请人： Vincent C. Adams ,  David L. Poole ,  David A. West ,  Davis S. Zubriski ,  Daniel F. Donato ,  James W. Ensinger ,  William J. Hamman

发明人： Vincent C. Adams ,  David L. Poole ,  David A. West ,  Davis S. Zubriski ,  Daniel F. Donato ,  James W. Ensinger ,  William J. Hamman

IPC分类号： B41J2/355 ,  B41J2/365 ,  B41J3/407 ,  B41J17/02 ,  B41J17/24 ,  B41J17/42 ,  B41J25/304 ,  B41J25/316 ,  B41J29/02 ,  B41J29/38 ,  B65C11/02 ,  B41J33/52

CPC分类号： B41J2/355 ,  B41J17/02 ,  B41J17/24 ,  B41J17/42 ,  B41J2/365 ,  B41J25/304 ,  B41J25/316 ,  B41J29/02 ,  B41J29/38 ,  B41J3/407 ,  B65C11/0289 ,  B65C2210/0027 ,  B65C2210/0029

摘要： A novel demand printer is used for printing on tickets, tags, pressure sensitive labels and other media. The printer has a spring wrap clutch assembly operatively associated with a media delivery structure for use with a rotating shaft to maintain a constant tension on a ribbon. The spring wrap clutch assembly includes a coiled spring having a leg extending away from one end of the coil, a collar having a bore therein for receiving the coiled spring with the leg extending away from the collar, the rotating shaft extending through the coiled spring and the collar is attachable to the rotating shaft, and a plurality of ramped teeth positioned around the rotating shaft. Each of the ramped teeth has a sloped surface and the leg of the coiled spring controllably engages the ramped teeth.

摘要翻译： 一种新颖的需求打印机用于打印票据，标签，压敏标签和其他介质。 打印机具有与介质输送结构可操作地相关联的弹簧卷绕离合器组件，用于与旋转轴一起使用以在带上保持恒定的张力。 弹簧圈离合器组件包括螺旋弹簧，该螺旋弹簧具有远离线圈的一端延伸的腿部，其中具有用于容纳螺旋弹簧的孔的轴环，其中腿部远离轴环延伸，旋转轴延伸穿过螺旋弹簧， 所述套环可附接到所述旋转轴，以及围绕所述旋转轴定位的多个斜齿。 每个倾斜的齿具有倾斜的表面，并且螺旋弹簧的腿可控制地接合斜齿。