Newsprint Printing Environment Monitoring System

Abstract

The invention discloses a newsprint printing environment monitoring system. The newsprint printing environment monitoring system comprises a temperature, humidity and pressure sensor, a terminal processing module and an upper computer; the temperature, humidity and pressure sensor acquires data of temperature, humidity, pressure and air density, and sends the data into the terminal processing module through a bus; the terminal processing module communicates with the upper computer through a serial port; the temperature, humidity and pressure sensor comprises a semiconductor detecting unit, a secondary converting unit and a signal processing unit; the semiconductor detecting unit comprises two semiconductor strain gages; the two semiconductor strain gages output a resistance response under the actions of the pressure difference between the inner side and the outer side of a membrane and the excitation of the temperature; the secondary converting unit converts the resistance response into a pulse width signal; the signal processing unit separates the data of the temperature, pressure and relative humidity through data decoupling. The data of the temperature, humidity, air pressure and air density of the printing, transportation and storage environment of newsprint are monitored in real time, so that the newsprint is prevented from absorbing water and deforming to affect the quality and using effect of paper.

Description

technical field [0001] The invention belongs to the technical field of printing, relates to the monitoring of printing environment, and specifically relates to a printing environment monitoring system for newsprint. Background technique [0002] The fluctuation of temperature and humidity, air pressure and air density has a great influence on the printability of newsprint. Low temperature and low humidity are beneficial to the printing and storage of newsprint. The temperature of the paper warehouse is kept at 18-25℃, and the relative humidity is 60%-70%. Suitable. From the analysis of the mechanism of temperature and humidity, it can be seen that as long as the temperature and humidity of the paper warehouse or printing environment are well controlled, and special attention is paid to the fluctuation range of temperature and humidity not too large or too fast, many chemical reactions that harm newsprint can be prevented. Newsprint has always contained moisture since it is ...

AI Technical Summary

Problems solved by technology

For example, if the water content on both sides of the roll paper is higher than that in the middle, "creases" will be formed on both sides, and "folds" with tight edges will be formed along the circumference. Once this kind of paper is printed on the machine, it will produce wrinkles and creases. In severe cases, it will affect the normal operation of the paper tape, and it will be torn directly. When encountering color newspaper printing, its color overprinting cannot be carried out.

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