What is the imaging principle of the screen printing plate of the screen printing machine?How to develop and fix?

What is the imaging principle of the screen printing plate of the screen printing machine?

As can be seen from the above, the wire mesh is woven from a certain material, and its warp and weft lines intersect to form a mesh.During plate making, a certain thickness of photosensitive glue is coated on the screen and dried to form a photosensitive film on the screen. Then the negative for making pictures, text and positive images is laminated to the coated screen and put into a printing machine for exposure.In this way, the graphic and text parts on the screen are not cured because they are not exposed to light, and the non-graphic and text parts are cured by light. After development and washing, the uncured photosensitive material in the graphic and text parts is washed away, making the screen holes into through holes.The photosensitive material in the non-image and text parts solidifies and blocks the mesh.During printing, printing ink leaks from the screen holes in the graphics and text parts, but no ink leaks from the non-graphics and text parts, thus obtaining printing ink.This is the imaging principle of the screen printing plate.

How to develop and fix the screen printing plate of the screen printing machine?

The production process of screen printing plates is relatively simple, and this feature becomes more prominent with the continuous emergence of new photosensitive materials.Use modern photosensitive materials to make screen printing plates. Use a photographic plate to make a negative and attach it to a screen frame coated with photosensitive materials. After printing, the screen frame is soaked in clean water, warm water or medicinal water for about 10 minutes, and the graphics and text will be displayed (the development time of different photosensitive materials is also different).Then use a sponge to gently scrub the screen plate in water so that the holes in the graphics and text parts are basically through holes.Then pressurized water is sprayed to remove all the screen holes in the graphic part, and finally the water stains are wiped off and dried to produce a screen printing plate.