1. The most important thing when printing a plate is to make the printing surface of the screen equipment closely adhere to the film. If the contact is not true, the graphic will be out of print, or even scrapped.
2. The correct exposure time depends on the type of photosensitive glue, the thickness of the sizing, the color of the screen, the light source, and the distance between the light source and the screen.
3. The performance of underexposure is: the photosensitive emulsion is easily washed off, and the film surface of the ink surface is sticky and dripping. The underexposed film plate has poor resistance to solvents and mechanical abrasion, and even the graphics and text are washed out or the photosensitive emulsion drips down to form a transparent film that blocks the mesh and is scrapped.
4. The performance of overexposure is: halo around the image and text, difficult to develop or incomplete development, halo around the image and text, difficult to develop or incomplete development.
5. Now the common dots in offset printing are amplitude modulation dots (traditional dots)
First printing/exposure (printing side should be below)
When exposing the plate, use an exposing machine. The screen of the screen should be facing up, the screen should be close to the printing surface of the screen, and the printing surface of the screen should be below. The film plate must be fully fitted to the screen plate, open and inhale, put it in the water after the plate is finished, rinse with a water gun, and see if the mesh is exposed under the light. After that, put it in the oven and bake it at a high temperature of 50 degrees or more.
We MAISHI mainly produce screen printing mesh, if any inquiry feel free to contact with us.
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