Method for detecting and analyzing printing quality of decorative paper

Abstract

The invention discloses a method for detecting and analyzing the printing quality of decorative paper. The method comprises the steps of: scanning a control strip on standard sample paper by a spectrophotometer, obtaining spectroscopic data of each color lump in the control strip, and obtaining chromatic value and dot gain value of each color lump through further computation; re-scanning the control strip on current printed paper, obtaining spectroscopic data of each color lump in the control strip, and obtaining chromatic value and dot gain value of each color lump through further computation; comparing the chromatic value and dot gain value of the standard sample paper with these of the current printed paper, evaluating printing quality, and indicating printing technology adjustment information needed to be adopted. According to the method, the problem that detection and control of the printing quality of current decorative paper completely depends on experience of workers and are short of quantitative detection and control technologies is solved.

Description

technical field [0001] The invention relates to the technical field of printing quality detection and analysis, in particular to a printing quality detection and analysis method during printing of decorative paper. Background technique [0002] Decorative paper is an emerging industry in China in recent years. Decorative paper veneer furniture, floors, wallpapers, etc. not only have beautiful designs and colors, but also can "replace wood with paper" to solve outstanding problems such as the lack of forest resources and the contradiction between supply and demand of wood. Decorative paper is printed with gravure and water-based ink, which is significantly different from traditional printing in the printing process. Traditional printing generally uses four basic color inks such as yellow, magenta, cyan and black, and reproduces colors through screen overprinting, which already has mature quality inspection technology. Since the common color imitated by the decorative paper ...

AI Technical Summary

Problems solved by technology

Relying on human experience, first of all it is difficult to determine the color difference of the printed matter is caused by which spot color is improperly reproduced; further it is also difficult to determine whether the improper reproduction of a spot color is caused by the color difference of the color matching or the difference in dot expansion of the spot color. Therefore, printing workers need to make repeated adjustments to make the color of the printed sheet as close as possible to the color of the standard proof, resulting in low production efficiency, waste of materials, and unstable color reproduction quality

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