Glossary: ​​screen printing

Screen printing consists of five major elements: screen printing plates, squeegee blades, inks, printing stations, and substrates. The basic principle of screen printing is: using the screen printing plate graphics part of the network through the ink, non-graphical part of the mesh does not penetrate the basic principles of printing ink. During printing, ink is poured onto one end of the screen printing plate, and a certain pressure is applied to the ink portion of the screen printing plate by the squeegee blade while moving toward the other end of the screen plate. The ink is pushed by the squeegee from the aperture of the graphic portion onto the substrate during the movement. Due to the stickiness of the ink, the imprinting is fixed within a certain range. During the printing process, the squeegee is always in line contact with the screen plate and the substrate, and the contact line moves with the squeegee, due to the screen plate and the substrate. Keeping a certain gap between them makes the screen printing plate at the time of printing produce a reaction force against the squeegee by its own tension, and this reaction force is called resilience. Due to the effect of the resilience, the screen plate and the substrate are brought into contact with only the movable line, and the other portions of the screen plate are separated from the substrate. Causes the ink and the screen to undergo a cracking motion, which ensures the dimensional accuracy of printing and avoids soiling substrates. When the squeegee is scraped across the entire plate, it is raised and the screen plate is lifted, and the ink is scraped back to its original position. This is a printing trip.