Printing pattern length control method meeting color register stability

Abstract

The invention relates to a printing pattern length control method capable of meeting color register stability, which comprises the following steps: a printing material sequentially passes through a printing roller and n printing plate rollers, and each printing plate roller is used for printing; comprising the following steps that SA, the positions of all printing plate rollers are debugged and fixed; sB, calculating the arc length of an arc between the contact points of each adjacent printing plate roller and the printing roller on the printing roller; sC, the error detection system is used for measuring the real-time length of the pattern in the printing material conveying process, and the length of the printing pattern needing to be compensated is calculated; sD, the rotating speed of the first printing plate roller is increased or decreased according to the length of the error; sE, the rotating speeds of the second printing plate roller, the third printing plate roller to the nth printing plate roller in the conveying direction of the printing material are sequentially increased or decreased when the printing area of the printing material arrives, the time difference of changing the rotating speeds of the adjacent printing plate rollers is the ratio of the arc length of the arc between the contact points of the adjacent printing plate rollers and the printing roller on the printing roller to the conveying speed of the printing material, and color register is accurate and stable.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a method for controlling the length of a printing pattern that satisfies color registration stability. Background technique [0002] There are many ways to change the linear speed of the printing plate roller. The parameters of the equipment may be different. There are ways to set the diameter or circumference of the printing plate roller to change the length of the printed pattern, but the essence is the linear speed of the printing plate roller. Change, by changing the linear speed of the printing plate roller, the running speed of the central cylinder remains the same as the linear speed of the equipment, and by increasing or decreasing the linear speed of the printing plate roller, different printing pattern lengths can be calculated. This adjustable length range is affected by device performance but the principle is the same. [0003] The current problem is that the curren...

AI Technical Summary

Problems solved by technology

[0003] The current problem is that the current domestic and foreign equipment use different color groups to adjust the length of the printing pattern by synchronously increasing or decreasing the linear speed of all printing plate rollers.

At this time, there will be a problem. If the patterns between the contact points of different color groups are controlled synchronously, the color registration of the patterns between the contact points will be inaccurate.

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