A kind of printing quality control method

Abstract

The invention relates to the field of printing technology, and aims to provide a printing quality control method. The main point of the technical solution is to include a background system, which acquires and stores the temperature, humidity, and liquid level of the ink in real time in the ink supply barrel output by the sensor. The temperature value, humidity value and liquid level height value of the ink; the background system compares the temperature value and humidity value of the ink in the ink supply barrel with the preset temperature value range and the preset humidity value range; when the conditions are met, the background system The system outputs a control signal for stirring the ink in the ink supply barrel until the viscosity of the ink in the ink supply barrel is within the preset viscosity range, and the background system outputs a control signal for stopping the stirring operation; at the same time, when the ink in the ink supply barrel When the liquid level of the ink is lower than the preset value h1, the background system outputs a control signal to make the corresponding sound and light alarm on the ink supply barrel give an alarm. The invention is suitable for printing quality control.

Description

technical field [0001] The invention relates to the technical field of printing, more specifically, it relates to a printing quality control method. Background technique [0002] A printing machine is a machine for printing text and images, and generally consists of plate loading, ink application, embossing, paper feeding, and folding. When printing, the ink is transported to the ink tank, according to the amount of ink in different areas, the ink leaks down, and through the action of several ink distribution rollers, ink string rollers, ink transfer rollers, etc., ink is added to the printing plate, so that The graphic device on the printing plate is glued with ink, and the blank device is out of ink; after that, the printing plate is in contact with the blanket cylinder, which transfers the ink to the blanket, forming the opposite graphic on the blanket; then, the blanket and the paper Contact, under the pressure of the impression cylinder, the ink on the blanket is trans...

AI Technical Summary

Problems solved by technology

[0003] The performance of the ink directly affects the printing quality when inking. If the moisture in the air penetrates into the ink to cause the ink system to polymerize and form a gel, the ink will form skin and distribute to all links of ink transmission, affecting normal ink delivery. , when the ink skin adheres to the ink roller, there will be a sudden change in the density of the graphics on the printing plate. When the ink skin is transferred to the printing plate and the blanket, ring marks will appear on the printed matter. When the water roller is on the water, it will cause abnormal water delivery and dirty phenomenon, and even the ink skin will directly adhere to the surface of the paper

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