Halftone burning method

Abstract

The invention discloses a halftone burning method which comprises the following steps: (1) testing the exposure energy required by a halftone; (2) performing single exposure on the halftone; (3) performing double exposure on the halftone; and (4) performing P-face surprint exposure on the halftone. According to the halftone burning method, after a film is pasted on the halftone, single exposure is performed on the halftone, and then after the halftone is translated on a printer glass surface, double exposure is performed on the halftone; suppose a foreign matter is on the printer glass, the place blocked by the foreign matter during the single exposure is not photic, and after the halftone is translated, the place blocked by the foreign matter is moved away and photic, so that the phenomenon about halftone perforation caused by the foreign matter of the printer glass can be avoided. In addition, the P-face surprint exposure step performed on the halftone can strengthen the binding force of emulsion and grenadine can be strengthened in a non-printing area, so that the halftone is unlikely to perforate due to extrusion during the printing and using process, and the service life of the halftone can be greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of screen printing, in particular to a screen printing method. Background technique [0002] At present, the screen printing screen adopts the exposure process. However, if there is a foreign object on the glass of the printing machine during the exposure process, the part of the screen surface blocked by the foreign object will not be photosensitized due to the light blocking of the foreign object, resulting in perforation on the screen surface. At the same time, in order to ensure the accuracy of the lines of the screen pattern, the exposure energy should not be too strong. If it is too strong, the lines will be distorted due to diffraction. During plate printing, it is easy to cause perforation due to extrusion. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for printing a screen with a second...

AI Technical Summary

Problems solved by technology

[0002] At present, the screen printing screen adopts the exposure process. However, if there is a foreign object on the glass of the printing machine during the exposure process, the part of the screen surface blocked by the foreign object will not be photosensitized due to the light blocking of the foreign object, resulting in perforation on the screen surface. At the same time, in order to ensure the accuracy of the lines of the screen pattern, the exposure energy should not be too strong. If it is too strong, the lines will be distorted due to diffraction. During plate printing, it is easy to cause perforation due to extrusion

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