FIELD: printing equipment.
SUBSTANCE: group of inventions relates to self-propelled printers. The printer transmits 2 commands and a synchronization signal. 2 beacons (B) are installed outside and along the working area (WA), a B receives a control signal (CS) in the optical range, decodes the CS and transmits harmonics on ultrasound, the level is set depending on the distance. With the help of a quadrature meter, the phase difference of the signals from the B and the generator is determined, the coordinates in the WA are selected.
EFFECT: increase in accuracy, speed, and cost reduction.
8 cl, 6 dwg
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