公开(公告)号：US5211110A

公开(公告)日：1993-05-18

申请号：US851945

申请日：1992-03-13

申请人： Hiroyuki Maesawa ,  Kazumasa Mizoguchi

发明人： Hiroyuki Maesawa ,  Kazumasa Mizoguchi

IPC分类号： B41J2/245 ,  B41J19/04 ,  B41J19/18 ,  B41J25/00

CPC分类号： B41J25/006

摘要： An impact dot line printer has a hammer bank equipped with a plurality of printing heads along printing lines mounted on the upper side of a belt extended between a pair of rotational drums. A counter balancer is mounted on the lower side thereof, the hammer bank and the counter balancer being reciprocated in the directions reverse to each other. Since repelling springs are provided on both left and right sides in order to reduce thrust required for deceleration at the end of shuttling operation of the hammer bank and the counter balancer, vibrations or noises caused by the collisions with the spring might occur. But by the present invention, rotors are provided with eccentric weights which act so as to offset force couple at the time of the collisions with the repelling springs, whereby the shock force caused by the collisions is sharply decreased to suppress the vibrations or noises.

摘要翻译： 冲击点线打印机具有锤装置，该锤组装有沿着安装在延伸在一对旋转鼓之间的带的上侧上的打印线的多个打印头。 平衡器安装在其下侧，锤组和平衡器在彼此相反的方向上往复运动。 由于在左右两侧设有排斥弹簧，为了减少在锤组和平衡器的往复运转结束时减速所需的推力，可能会发生与弹簧碰撞引起的振动或噪声。 但是通过本发明，转子设置有偏心重物，所述偏心重物用于抵抗与排斥弹簧碰撞时的力联合，由此由碰撞引起的冲击力急剧下降以抑制振动或噪声。