The invention relates to the field of multiple-spray-head ink-jet printers and provides a phase different electronic calibration
system of multiple-spray-head printing spray points. The phase different electronic calibration
system of the multiple-spray-head printing spray point comprises a main board, a phase logic
processing unit, a first asynchronous first in first out (FIFO), a second
asynchronous FIFO, a first
driving circuit, a second
driving circuit, a first spray head and a second spray head. By adopting an electronic calibration technology,
machine calibration difficulty is reduced, and mechanical calibration mechanism is simplified. A spray head dolly direction
signal is used for judging positive and negative of phase, thereby reducing complexity of the phase logic
processing unit and simultaneously improving the reliability. Phase transmission is shown by adopting pulse width, thereby improving flexibility and reliability of the main board controlling phase different between the two spray heads. By means of separation of the phase logic
processing unit and the main board, original main board design is retained ingeniously, development cost is reduced, and development progress is accelerated. The number of signals of the main board and the spray head driving circuits is decreased, the cost is reduced, and the
signal sending reliability of the main board is improved.