(2) About Printing
panel screen printing. Panel Screen Printing Screen Printing and the general similarity of plastic film, but printed on the back panel, that is printed on non-touch side panels to ensure the graphic on the front panel membrane switch permanently clear, free from wear and tear. Plastic ink variety, but the performance varied. Dry ink drying schedule for about 0.5 hours, hard work Zexu more than 5 hours. As the membrane switch panel to go through several chromatic printing, it should be noted that the time interval between printing ink colors. To ensure the printability of ink, printing process, preferably constant temperature and humidity conditions.
In the printing color sequence, we should follow the principle of first light after dark. For large area panel background or color blocks, color blocks of color in particular to India Talking about twice as good, so ink layer thickness, ink full, and improved ink opacity. However, to avoid color overlap, there shadow.
After all overprint, transparency needed in addition to fenestrae outside layer of the back panel to print color, often referred to as the bottom seal. Seal the bottom with ink to prevent wear and protect panel graphics, color effects, while the back of the ink to be a comprehensive clean-up, improve ability to cover, to prevent the exposed panel on the back of the circuit. Sealing the bottom of the ink used for the best use of silver ink, which on the one hand has high opacity characteristics, on the other hand it does not change the hue of ink, and can set off in front of the ink is even more vivid.