step s18 thereby performing a jam indication step s19 when the jammed paper is removed and the reset switch 67 is turned on step s20 the jam indication is turned off step s21 and a series of operations starting with paper feed are performed again from the beginning on the other hand when no jams occur but video inputs are interrupted during copy operation by disconnection of the input connector troubles with video sources such as a vtr or a video disk interruption of the power supply or the like and as a result when a lack of synchronizing signals hd is detected by the detection circuit 58 step s11 then position of the line or column which has caused failure of the horizontal synchronizing signals hd is stored step s22 at the same time paper feed and copy operations are inhibited step s23 in addition failure of the synchronizing signals is indicated by the display circuit 64 step s24 when troubles are eliminated by reconnection of the video signal input connector or the like and the reset switch 67 is then turned on step s25 the failure indication is turned off step s26 and an input to the start switch 66 or the stop switch 68 is awaited steps s27 s28 when the start switch 66 is turned on step s27 copy operation starts at the position on the recording paper where copy operation has stopped because this abnormality is not an irrecoverable problem such as a jam in more detail when the start switch 66 is turned on step s27 count of the number of sampled lines or columns starts with the first line or column thereof step s29 when the count value arrives at the line or column which has caused the lack of horizontal synchronizing signals.