1. The causes and solutions of horseshoe marks The PS versions that we commonly use in offset printing plate-making work can be roughly divided into two types; one is the original PS version used for printing high-end fine packaging and decoration, trademarks, and four-color overprint color covers. This version of the material is high in price and quality. Good, the surface is relatively smooth; the second is the regenerated PS version for printing low-grade books, forms, miscellaneous items. This kind of plate material has low price, unstable quality, the surface of the recycled PS plate is not smooth enough, and there are many horseshoe marks. Because the regenerated PS version has undergone multiple regeneration processes of the original PS version. In the regeneration process, disassembly, cleaning, grinding, electrolytic corrosion, coating and regeneration of PS plate photosensitive film, drying and other processes, PS plate only has a thickness of about 0.4mm, such as the size of the PS plate is large, and the plate material Thin, the PS version is often regenerated many times during the regeneration process, and it is easy to cause horseshoe marks in the regenerated PS version during operation. The PS version is best stored upright like glassware during transportation. Careful handling will reduce horseshoe marks. In addition, the operators working on the PS version should have a sense of responsibility and careful work attitude. Take the PS version out of the box and take it lightly. When you find a horseshoe mark on the PS version, you can use a small bamboo board to remove the PS version. Poke up the back of the version, press on the platform if possible, and make the PS version as flat as possible. 2. Adjust the vacuum pump of the selenium plate machine When we encounter bumpy horseshoe marks on the PS version in actual work, we must readjust the pressure of the vacuum pump before printing to make it increase in pressure when vacuuming. Extend the inhalation time before the PS version is exposed, let the vacuum pump suck and suck up enough so that the photosensitive film surface of the PS version can closely fit the text, dots and lines on the sulfuric acid paper or film, and the dots of the PS version exposed are clear , Smooth and clean, the idea is strong and not falsified, to meet the quality requirements of offset printing. The grill rack chicken leg wrings great for Use in the Oven, Smoker, or on the Grill. Multi-Purpose 12 Slot Leg and Wing Rack for Poultry. Excellent way to cook Chicken Legs and Wings to Perfection. Check food for doneness. Serve and Enjoy. The large grill rack is perfect size for cooling cookies, pies, and cakes, baking dishes and pans, steaming vegetables, and more.BBQ fish meat net barbecue grill mesh wire clamp outdoor stock the food on the net for turning over at ease. Bbq Grill Rack,Grill Rack,Barbecue Grill Rack,Round Grill Grates MEO DEMO CO., LTD. , https://www.meokitchenknives.com
In the offset printing work, we often encounter the situation that the PS version, especially the regenerated PS version, is not flat enough and has horseshoe-shaped convex and concave marks, which seriously affects the quality of the offset printing. In places with horseshoe marks. Because the PS film's photosensitive film and the sulfuric acid paper or film's text, lines, and dot film cannot be tightly attracted, and there is a certain gap, it is easy to cause the text, lines, and dots to be false, and the PS version cannot be printed on the machine The phenomenon.