| 摘要 |
PURPOSE:To provide the titled mechanism such that the number of component parts can be reduced to reduce size and weight thereof, wherein two sets of hammer springs are driven simultaneously by one set of a magnetic circuit and a solenoid. CONSTITUTION:Two sets of hammer springs 1 facing to each other each of which is fitted with a dot pin at the tip thereof use in common a permanent magnet 2, yokes 3, 4 (which are component parts of the magnetic circuit) and a switching solenoid 5. With the solenoid 5 excited, the magnetic flux of the permanent magnet 2 is canceled, the hammer springs 1 having been attracted by the yoke 3 are simultaneously released from the yoke 3, and dot pins are made to collide against platens by the recoil strength of the hammer springs 1, thereby printing dots. |
