Manufacturing method and manufacturing device of printing magnetic orientation mother set and magnetic pigment presswork

Abstract

The invention provides a manufacturing method and a manufacturing device of a printing magnetic orientation mother set and a magnetic pigment presswork. The manufacturing method of the printing magnetic orientation mother set comprises the following steps of: providing a magnetic body; utilizing a thermal radiation beam to heat a local area of the magnetic body, and forming a new domain structure in the local area through a self-magnetization manner of the magnetic body so as to change magnetic-field distribution of the local area; and removing the thermal radiation beam, so that the new domain structure reduced to be at normal temperature is kept, and further the changed magnetic-field distribution is kept in the local area so as to form the printing magnetic orientation mother set with preset magnetic orientation patterns. Through the method, the magnetic-field distribution is changed by utilizing thermal disturbance generated by the thermal radiation beam in the local area of the magnetic body, and the printing magnetic orientation mother set with the preset magnetic orientation patterns is further formed, so that the manufacturing process of the printing magnetic orientation mother set can be simplified, and abundant pattern information can be carried.

Description

technical field [0001] The invention relates to the field of magnetic orientation printing, in particular to a method and a manufacturing device for printing a magnetic orientation master plate and a magnetic pigment print. Background technique [0002] At present, in the field of anti-counterfeiting technology, such as printing banknotes, bills, etc., the magnetic pigment flakes inside the magnetic optical variable ink are usually magnetically oriented by using a printed magnetic orientation master. The printed magnetic orientation master has a specific magnetic field designed artificially, so that Magnetic pigment flakes create a unique pattern effect of the design in the print. [0003] The printed magnetic orientation masters in the prior art are generally made by etching the surface of magnets or combining different magnets. The printed magnetic orientation masters produced in the prior art have uneven surfaces, are difficult to process, and are prone to wear and tear. ...

AI Technical Summary

Problems solved by technology

[0003] The printed magnetic orientation masters in the prior art are generally made by etching the surface of magnets or combining different magnets. The printed magnetic orientation masters produced in the prior art have uneven surfaces, are difficult to process, and are prone to wear and tear. Affect the service life of the master

In addition, the magnetic orientation pattern of the printed magnetic orientation master made by etching cannot be rewritten once it is formed, and cannot be recycled, and the processing loss is large, which is easy to cause waste of rare earth materials for permanent magnets

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