To provide a gravure printing machine which suppresses a magnitude of registration slur within an allowance when printing speed is increased or decreased from a normal state, and also to provide a control method of the machine.
For increasing/decreasing rotation speeds of plate cylinders 11a, 11b, 11c of respective printing units 10a, 10b, 10c, if the rotation speeds are magnitudes within a predetermined range set in advance, a correction amount of a predetermined magnitude set in advance is added to calculated control amounts of respective compensator rollers 14b, 14c when positions of the respective compensator rollers 14b, 14c are adjusted. On the other hand, if the rotation speeds of the plate cylinders 11b, 11c are out of the predetermined range set in advance, the rotation speeds of the plate cylinders 11a, 11b, 11c of the respective printing units 10a, 10b, 10c are adjusted without adding the correction amount to the calculated control amounts of the compensator rollers 14b, 14c. At this time, a print speed condition is switched so that the magnitude of the registration slur is within a predetermined range set in advance.
Hiroyuki Nagai
Katsuomi Isogai
Satoshi Nazuka
Junpei Okada
Hideyuki Mori
Yukihiro Hotta
Hiroki Kashima
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