| 摘要 |
PURPOSE:To obtain a print with good print quality through simple constitution, by using a pulse train picked up with a pickup pulse generating means consisting of a timer circuit and a pulse generator as a control signal for dot print determination. CONSTITUTION:A print start positioning control SLR signal 11 from a control signal generator 1 is applied to an integration circuit 21, a noise component A is rejected to be an SLR signal 11' and applied to a timing circuit 2 and a timer circuit 22. The circuit 22 receives the signal 11' and generates an output after a prescribed time to drive a pulse generator 23. The output pulse of the generator 23 is applied to a sampling means 24 and also fed back to the circuit 22 to generate a series of sampled pulse train 13. The means 24 receives the pulse train 13 and a print signal 12 from the generator 1 and samples a print signal 12' and applies the signal 12' to the circuit 2 and an oscillator 7. Since signal 12' has the same relation of phase as the signal 12 and is rejected for the noise component B, a beautiful print can be obtained without fluctuation in the print dot positions. |
