PURPOSE: To make the accurate coincidence of the real length of string material with the value of length mark possible, by a method wherein when the measuring scale pulse generated in a rotary encoder has been conductor to the counter circuit to which the correction value of measuring scale error is presetted to reach the setting pulse number after correction, the string material is marked by operating a length marker circuit.
CONSTITUTION: The rotary encoder for detection of measuring scale pulse 4 and the rotary encoder for detection of cable speed 5 are directly coupled to be rotated on the axis of measuring scale pulley 2. Then, each time the rotary encoder 4 inputs 9 pulses to a measuring scale error correction value setting input circuit 7 assuming a slippage error of 1% in the measuring scale pulley, the counter of counter circuit 6 outputs one pulse. The pulse from the counter circuit 6 is operated with the signal from a print contents program input circuit 9 in the operation circuit 8 of print contents and time, being inputted to a length marker control circuit 11 via a print letter width speed synchronous circuit 10 and accurate length marking is printed.
HIRUTA YOSHIKATSU
KUMAGAI TAKEO
YOSHIMOTO MITSUO
KASHIWAZAKI KATSUMI
