Device for detecting registration of printing marks and control method of device

Abstract

The invention discloses a device for detecting registration of printing marks. The device comprises a photoelectric eye B arranged on a printing plate roll, a plate roll transverse adjusting mechanism, a code disc and a photoelectric eye A. The photoelectric eye B is arranged on a photoelectric eye B support, and the photoelectric eye B support is arranged on the printing plate roll. The problems that in an existing printing registration mechanism, printing marks which are printed on printing materials and are hard to detect cannot be recognized by photoelectric eyes, only longitudinal control over patterns of reference color sets and current color sets is achieved, and automatic transverse control over patterns cannot be achieved are solved. The invention further discloses a control method of the device for detecting registration of the printing marks. The method comprises the steps that 1, machining and mounting are carried out; 2, the marks printed on the code disc are designed, and code disc color code paper (11) is pasted on the circumferential surface of the code disc (3); 3, starting printing is carried out, and pre-registration is carried out; 4, registration is adjusted according to the color code waveform of a chromatography system; and 5, registration is completed, and the chromatography system is in an automatic state.

Description

technical field [0001] The invention belongs to the technical field of printing machinery and control, and relates to a device for detecting registration of printed marks, and also relates to a control method of the device for detecting registration of printed marks. Background technique [0002] In the process of printing and fixed-point coating, there are some light-colored inks, varnishes, colorless coating materials, etc., which are printed on the printing material and have no color difference or the color difference is too small, and the color registration photoelectric eye cannot detect it. The function of single mark (comparison between mark and motor encoder) is adopted, that is, the photoelectric eye is compared with the position signal of the motor encoder of the current printing color group to realize the registration function of the reference color and the current color, but this function can only realize the reference color The vertical control of the group and ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device for detecting the registration of printed marks, so as to solve the problem that the photoelectric eye of the existing printing registration mechanism cannot recognize the difficult-to-detect printed marks printed on the printing material, and can only realize the reference color group and the current color group The vertical control of the pattern and the horizontal control of the pattern cannot realize the problem of automatic control

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