PURPOSE: To recognize an inaccurate recorded part, by recording data with chain lines for the input of a step signal or the like which is so high-speed that each servo system cannot follow up.

CONSTITUTION: Signals inputted to input terminals 3 and 11 os X-axis and Y- axis servo systems 1 and 2 are supplied to servo motors 6 and 14 through amplifiers 4 and 12, subtractors 9 and 17, and amplifiers 5 and 13 respectively. By these servo motors 6 and 14, not only a recording needle 10 is moved but also feedback circuits 8 and 16 including X-axis and Y-axis potentiometers 7 and 15 are controlled to supply output signals to subtractors 9 and 17. When deviation voltages from subractors 9 and 17 exceed the reference voltage of a reference power supply circuit 22, outputs of comparators 20 and 21 are outputted to a coloring controlling circuit 24 through an OR circuit 23. This coloring controlling circuit 24 controls a recording power supply circuit to supply the power to the recording needle intermittently at a certain period, and thus, the recording state is changed from the recording with solid lines to the recording with chain lines.