| 摘要 |
PURPOSE:To prevent a defect in synchronism, by performing the write of picture information from a picture reader to a memory and the readout of the written picture information from the memory by means of a clock from the picture reader and a horizontal synchronizing signal from a printer. CONSTITUTION:A video signal transmitted from a picture reader and a horizontal synchronizing signal outputted from a horizontal synchronizing signal generator 12 in each printer are synchronized with a video interface circuit 11, and the synchronism between the reading timing and the video signal to each printer can be taken by applying a video signal being the output of the circuit 11 to a DC controller 13. The DC controller 13 supplies a video signal to a laser driver 14 in response to the video signal and the horizontal synchronizing signal applied and writes a recording picture on a photoreceptor drum 21 with a laser beam from a semiconductor laser 15. |
