In the printing of the automatic screen printing machine, the automatic screen printing machine is inseparable from our lives. However, the printing effect of the screen printer and the depth of the pattern texture are all determined by the thickness of the ink, so we need to control the thickness of the ink. The thickness of the ink layer affects the depth of the image and text, the restoration degree of the color cabinet and the size of the color shift. This requires us to control the thickness of the ink layer well, so how to control the ink thickness of the automatic screen printing machine?
1. As the thickness of the ink layer increases, its viscosity increases accordingly, and the fluidity of the ink decreases. The wet thickness of the ink layer is equal to the theoretical color value of the screen fabric. The thickness of the ink layer can be calculated by simply dividing the color value by the mesh area according to the following method: ((20 cubic centimeters ÷ (100 cm×100 cm))×10, 000 microns/cm) = 20 microns.
2. The thickness of the stencil film also affects the thickness of the ink layer, and the thickness must be increased according to the color value of the screen. Therefore, on a screen, using a stencil with a thickness of 10 microns and a theoretical color value of 20 cubic centimeters per square meter, a wet ink film thickness of approximately 30 microns will be formed, which is 10 microns more than the calculation result above.
3. The direct "effect" of the thickness of the ink layer is that the colors are bright, giving people a very full feeling, and the three-dimensional effect is relatively strong. This is a point that screen printing is proud of. For large areas of solid ground, text and other patterns, Screen printing is also handy.
As far as I know, in the early products, the patterns on the printing surface of the CD were mainly based on the theme of a large area of field and text, which also catered to the characteristics of screen printing. The ink layer after screen printing by the fully automatic screen printing machine is about 3 times thicker than offset printing, which invisibly increases the cost of CD printing. For some CD manufacturers who have different printing methods such as screen printing and offset printing, come to In the face of different batches of optical disc products, this is worth worrying about.
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