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A printing machine color density real-time control system and its control method

A real-time control system and control system technology, applied to printing machines, general parts of printing machinery, printing, etc., can solve the problems of reducing speed and printing efficiency, and achieve the effects of reducing faults, ensuring color, and reducing labor intensity

Active Publication Date: 2017-11-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many factors that affect the color, and reducing the speed cannot completely solve the problem, and it also reduces the printing efficiency, which has become a major obstacle restricting the increase in the speed of the printing machine.

Method used

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  • A printing machine color density real-time control system and its control method
  • A printing machine color density real-time control system and its control method

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with specific examples.

[0016] Such as figure 1 As shown, a schematic diagram of the structure of the printing machine is given from the perspective of ink volume control. The printed matter (such as label paper) enters the printing machine from the left, and after multiple printing processes, the printed product (such as label pattern) is obtained from the right. The color concentration real-time control system of the printing machine according to the invention is composed of an image acquisition system, an industrial computer system and an ink quantity control system. The image acquisition system consists of a standard light source and a high-speed industrial camera. When the printed product arrives, the proximity switch acts to trigger the industrial camera to take pictures and transmit the image data to the industrial computer system through the Ethernet interface. The industrial computer system...

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Abstract

The invention discloses a real-time control system and a control method for the color density of a printing machine. The control system is composed of an image acquisition system, an industrial computer system and an ink volume control system; When the finished product arrives, the proximity switch acts, triggers the high-speed industrial camera to take pictures, and transmits the image data to the industrial computer system through the Ethernet interface; the industrial computer system includes an image processing system and a color density control system; the image processing system realizes printing image segmentation and quality control. Parameter extraction, including data such as color density, color uniformity, rough edges and pitting; the color density control system obtains the set value of the ink volume control system according to the color density measurement value and the standard pattern set value, and the ink volume control system adjusts the ink supply. ink volume to stabilize color density. The invention improves the printing speed, improves the printing quality and automation level, and reduces the labor intensity of workers.

Description

technical field [0001] The invention relates to the technical field of color density control of printing machines, in particular to a system and a control method for realizing a data-driven real-time control system and control method for color density of printing presses by using machine vision to measure the color density of printed matter of a printing machine. Background technique [0002] Compared with international advanced products (such as Heidelberg in Germany), the performance of domestic printing machines is quite different. Foreign countries have obvious advantages in printing machine process design, component manufacturing and the cooperation accuracy of each process link. This is different from basic industries and materials. It is difficult to catch up in the short term. The biggest performance difference between domestic printing machines and international advanced products is that the color density fluctuates greatly. The current domestic solution is to reduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F33/00
Inventor 哀薇李向阳郭健
Owner SOUTH CHINA UNIV OF TECH
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