Device and method for tracing and checking shallow color code mark of drum type multicolor rotogravure press

Abstract

The invention relates to a device and a method for tracing and checking a shallow color code mark of a drum type multicolor rotogravure press. The device comprises an auxiliary roller (1), a scanning head (9), an imaging system (7) and a transmission optical fiber bundle (8), wherein the scanning head is arranged at a shallow color code mark to be checked (3) on a rotogravure press product; the auxiliary roller (1) and a printing plate roller (2) of a rotogravure press are same in diameter and are coaxially arranged on one side of the printing plate roller (2); the auxiliary roller (1) is provided with an auxiliary deep-color code mark (4) which is of consistent shape and size with the shallow color code mark to be checked (3); and the incident end of the transmission optical fiber bundle (8) is connected with a light source, and the emergent end of the transmission optical fiber bundle (8) is provided with a light-transmitting window which is of consistent shape and size with the shallow color code mark (3). According to the device disclosed by the invention, the scanning head (9) receives reflection lights of the shallow color code mark to be checked (3) with strengthened brightness so that requirements of the scanning head (9) during registration printing are met; and the device and method for tracing and checking the shallow color code mark of the drum type multicolor rotogravure press, disclosed by the invention, have the characteristics of simple technical scheme, low manufacturing cost, strong applicability and the like.

Description

technical field [0001] The invention relates to multi-color gravure printing machine technology in the field of printing, in particular to a device and a detection method for detecting light-color color marks of a reel-type multi-color gravure printing machine. Background technique [0002] When the conventional roll-type multi-color gravure printing machine is printing color printed matter, because the detection head is too low for the detection sensitivity of the light-colored mark that needs to be detected, the printing of water-based varnish, light yellow, light gray and other light-colored marks It is very difficult to track and detect the printed products, but for water-based varnish, UV varnish and other light-colored color-marked printed products, there is a problem that it cannot be tracked, which seriously affects the registration accuracy and quality of color printed products. Multicolor prints of patterns pose great difficulties. Contents of the invention [0...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose a low-cost and easy-to-implement reel-type multi-color gravure printing machine with light-color color markings for the existing reel-type multi-color gravure printing machine. Marking tracking detection device and detection method to meet the registration and printing of color prints

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