| 摘要 |
PURPOSE:To uniform the waveform of the revolving speed of a pulse motor, by delaying a field pulse generated after decoding. CONSTITUTION:Encoded data (a) inputted from input terminal 1 is decoded by arithmetic circuit 2 and outputted to output terminal 6 as facsimile data. Further, circuit 2 calculates and compares time tn, required to decode one scanning line, with minimum scanning line time T and, when tn<T, sets counter 9 to T-tn=t1. Counter 9 counts clocks with decoder code to be coded at time t1 supplied from circuit 2 and then generates an output pulse. The output of counter 9 is applied to field pulse generating circuit 4 to generate field pulse (c). This pulse (c) drives pulse motor 8. Meanwhile, enable output (e) determining the effective range of one scanning line is generated by enable generating circuit 3 and outputted to output terminal 5. Thus, the revolving speed of motor 8 can be uniformed and clear record with a little unevenness of feed can be obtained. |
