Introduce the printing and pre-preparation of ceramic applique proofing

one. Comparison of manuscripts and color separation films

After the sample tester receives the manuscript and the color separation film, the color separation film is first checked for several colors. The control manuscript compares the dots of the single-color printing plate, and the effect of the front and rear press plates meets the requirements of the manuscript. Whether the color sequence change before and after the field meets the printing requirements, whether the number of dots can reach the required number of hue, and it is transferred to the printing process after being compared with the original.

two. Shaiban and preparation

Hollow aluminum mesh frame is suitable for ceramic decal paper printing screen because of its good strength, high precision, beautiful and light, strong water resistance and solvent resistance. When using the new aluminum mesh frame, use a fine sandpaper to gently rub the surface of the mesh frame, which will help to improve the adhesion of the mesh frame and the mesh, and pre-coat the adhesive on the surface that is in contact with the mesh. Dry it. When the net is stretched, the net frame is placed on the flat table, and the wire mesh is flat on the net frame. The air clamp is used to clamp the four sides and the air pressure pushes the piston of the chuck to pull the clamp to tighten the screen. Net tension and apply a certain pressure, so that the screen and the frame firmly bonded.

Due to different production process requirements of ceramic decals manufacturers, the types of screens used are also different, and they must be selected according to actual conditions. The number of screen meshes is 60-420 meshes, and the stretching tension is based on the actual situation. Hand-stitched webs are seldom used due to the inconsistent operation of the tension and the inconvenience of quality that cannot be guaranteed.

Shaiban is an important part of the sample making process, and the quality of the printing plate often depends on the light source, light distance and exposure time. When printing, the screen and the positive image should be tightly vacuumed for exposure. The determination of the exposure time is on the one hand using a ruler to test, on the one hand, based on the accumulation of long-term work experience of the operator. The drying screen must meet the number of dots in the separation film, so that the number is high, the number is low, and the thin lines are bright.

Developing with the developer is simple and effective, from weak to strong until the drying is completed. During the process of manual development, the screen will be soaked in water for a while and then washed with water. When flushing the screen, the hydraulic force should not be excessively strong so as not to damage the retina. Then the towel is used to wipe off the water and put it in a drying oven. The agent trims the trachoma and the edges of the image.