One kind of coding method Automatic Color Printing back of formula

The present invention discloses a coding method for automatic color type back printing, back printing using a code type automatic chromatography apparatus, coding type automatic color back printing apparatus structure: comprising a roll shaft, roll shaft connected with the motor, Release an encoder connected to the roller shaft, the motion controller is connected to the coder, automatic color controller is further connected to the optical head and the motion controller, coding, the optical head is mounted in the feed direction of the film running in a straight line. Coding type using automatic color back printing apparatus, the back surface to achieve a color print of the printed pattern, each form roll revolution of printing a color on the same phase, and the printing surface of the print and color patterns are completely consistent correspondence, therefore, as color printing color overprint reference, solves the problem of printing color when present in the prior art automatic color printer wallpaper is difficult to detect the high back printing flexo printing color formula cost, complicated operation .