| 摘要 |
PURPOSE:To attain to uniformize not only a dot interval but also printing force, by generating an exciting signal to the coil of an electromagnet according to an exciting timing signal and delaying the generation of the exciting signal on and after the second time at the time of continuous operation and making the pulse width of the exciting signal on and after the second time smaller than that of the exciting signal of the first time. CONSTITUTION:An exciting timing signal is applied to an input terminal 44 and an exciting raw signal is applied to an input terminal 46. The exciting raw signal is a rectangular wave pulse generated in synchronous retation to the exciting timing signal but the pulse width thereof is selected so as to be slightly longer than a time To. An exciting signal is generated in synchronous relation to the exciting timing signal at the time of single operation and, at the time of continuous operation, the exciting signal is generated in synchronous relation to the exciting timing signal at the first time but generated so as to be delayed by the time To from the exciting timing signal on and after the second time. All of the pulse widths T1, T2... of the exciting pulses are same and the pulse cycles thereof are set to Ta>Tb=Tc.... In armature operation (a) and a printing result (c), all of the interval P1 between a first dot D1 and a second dot D2, the interval T2 between the second dot D2 and a third dot D3... become equal. |
