Method and system for quality inspection of printed matter

Abstract

The invention discloses a method and system for checking the quality of printed matter, belonging to the technical field of printing. The present invention firstly determines the error coefficient according to the various production conditions of the manuscript to be inspected to be delivered for printing; the error coefficient can reflect various error factors affecting the printing effect in the printing process; and then reflects the printing production conditions according to the error coefficient For the impact on the printing effect, the simulated image after the error event is generated according to the image generation method of the simulated printing production process; finally, the simulated image is compared with the original manuscript, and the situation of attenuation or even loss of graphics or image elements is analyzed. This gives the result of the check. The present invention generates an image consistent with the printed product by simulating the printing production process, and compared with the original manuscript, it obviously has the advantages of good intuitiveness and high accuracy.

Description

technical field [0001] The invention belongs to the technical field of printing, and in particular relates to a method and system for checking the quality of printed matter. Background technique [0002] In the printing industry, due to the limitation of the existing printing technology, the graphic or image manuscript produced by the designer often has a certain deviation from the design draft when printed. The occurrence of this deviation is related to many factors, such as ink color difference, misalignment caused by misregistration, loss of too small dots, etc., and these factors that affect printing quality may also change. For this reason, the manuscript usually needs to be inspected specifically before being delivered for printing, so as to ensure that the effect after printing is consistent with the design draft. In the prior art, a test result is obtained by setting a series of rules and checking whether a specified image complies with these rules item by item. Th...

AI Technical Summary

Problems solved by technology

The purpose of prepress inspection is to judge whether the design manuscript meets the requirements of printing, but the inspection of the manuscript by setting rules can only prove that the graphics or image elements of the manuscript meet certain characteristics, and it cannot directly reflect the quality of the manuscript. Changes in visual effects before and after printing, less accurate

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