A preprint pressure measurement and control method

Abstract

The invention discloses a method for measuring and controlling pre-printing pressure, which comprises the following steps: Step 1. Set a dot measurement and control bar on each color printing plate during plate making, and 2% and 95% dots are set on the dot measurement and control bar; Step 2. Printing Plate installation test printing, repeatedly adjust the printing pressure between the printing plate and the substrate color by color, until 2% of the dots can be clearly printed on the substrate, while 95% of the dots are slightly blurred, expanding to 96-98% on the substrate Network dots; Step 3. Determine and maintain the printing pressure after debugging. The present invention can effectively control the pre-printing pressure, thereby controlling the dot deformation and dot chromatic aberration, reducing the degree of pattern distortion, and better controlling the printing quality. Invention is more intuitive, and the evaluation criteria can be quantified, which is more conducive to technology inheritance and employee training.

Description

technical field [0001] The invention relates to a printing quality control technology, more specifically, it relates to a pre-printing pressure measurement and control method. Background technique [0002] The process of pre-printing the desired pattern before making corrugated cardboard is called pre-printing. Existing pre-printing equipment mostly adopts flexographic printing process or gravure printing process. Printing pressure is an important parameter in the printing process, improper control of printing pressure will directly affect the printing quality. For example, in the flexographic printing process, the printing plate is made of flexible resin material. When printing, the printing plate directly touches the substrate to transfer the ink on the printing plate to the substrate. If there is a gap between the printing plate and the substrate If the printing pressure is too small, the ink will not be fully transferred, resulting in some small dots that cannot be pri...

AI Technical Summary

Problems solved by technology

However, the printing pressure control method of this invention can only be realized based on the software and hardware support of printing equipment, which is not suitable for the current situation that most equipment in the industry needs manual judgment and adjustment, so it is temporarily difficult to popularize and apply

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