Color code type automatic positioning product detection device and method

Abstract

The invention relates to a color code type automatic positioning product detection device and method. The color code type automatic positioning product detection device comprises a computer system and an optoelectronic scanning head, wherein the computer system is used for image comparasion, and the optoelectronic scanning head is connected with the computer system; a detection color code is arranged on a printed matter and corresponds to chromatography color; and the optoelectronic scanning head is positioned at a place which corresponds to the detection color code on the printed matter. By arranging the detection color code on the printed matter and using the optoelectronic scanning head for carrying out scanning and comparison, the color code type automatic positioning product detection device overcomes the technical problems that a linear array scanning camera can not detect chromatography errors and a coder can not be used for synchronization during rewinding of products. The detection color code for marking products to be detected is automatically formed in the printing process by a preset chromatography color code; one optoelectronic scanning head can be used for simultaneously detecting the products and performing intensive comparison and calculation so as to timely detect out defective goods; the implementation scheme is simple and flexible; no extra working procedure is increased; operation time is not increased; and the color code type automatic positioning product detection device can be widely used for detecting the chromatography errors of products printed by various raw materials.

Description

technical field [0001] The invention relates to a detection device and method for printed matter, in particular to a color-mark type automatic positioning inspection device and detection method. Background technique [0002] At present, in the plastic composite roll film production industry, the quality inspection device of roll material printing generally uses a line scan camera to send the scanned image data to the computer, and the computer checks out the defective printing quality through image comparison and calculation. . Since high-speed cameras are all linear scans, calculating the data difference of scan lines can only detect printing quality problems such as obvious different features such as wild ink, knife lines, and incomplete printing, and cannot detect overprint errors of gradient colors, which is easy to cause missed detection , the printing quality of the product cannot be guaranteed. [0003] Chinese patent 200410082206.X discloses an intelligent digital ...

AI Technical Summary

Problems solved by technology

Since high-speed cameras are all linear scans, calculating the data difference of scan lines can only detect obvious different features such as wild ink, knife lines and incomplete printing quality problems, and cannot detect overprint errors of gradient colors, which is easy to cause missed detection , the printing quality of the product cannot be guaranteed

[0003] Chinese patent 200410082206.X discloses an intelligent digital graphic detection system and its detection method, which adopts the fusion technology of multiple sensors, and digitally processes the images detected by multiple image sensors, and then sends them to the processor, so that various The problem is that it is difficult to detect the defects of gradient color or overprint error, and the system is too complicated and the implementation cost is high

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