In recent days, many users of 1800 offset printing machines have reported that the ink transfer of the machine is not good; the rubber roller does not apply ink; the nip or other places are sticky; the ink volume is maximized, and the ink on the rubber roller is piled up and splashed everywhere. The handwriting of the printed matter is still very light, which seriously affects the quality of the printed matter. Rubber rollers are divided into hard rubber and soft rubber. The hard roller is composed of ink source roller, F roller, E roller, D roller, water equalizing roller and water source roller. The soft roller is composed of a total of 7 ink transfer rollers, floating rollers (2), water transfer rollers, water blocking rollers, ink roller A, and ink roller B. Generally, the normal service life of rubber rollers is very long, especially hard rollers, and some users maintain them well. They have been in use for more than ten years. The soft roller must be replaced when the cracking, aging, natural wear and thinning exceeds the adjustment range. Since the 1800 offset press is a water-ink-mixed model, the control of water-ink is the key to ensuring the quality of printing. At the same time, ink transfer and water transfer are good, and sticking plates are not easy to appear. Hard rollers are not inked mainly on D, E, F rollers, soft rollers are not inked mainly on ink transfer rollers and two floating rollers. When the machine is not loaded with water, all the rubber rollers are inked normally. Once the machine is filled with water, these hard rollers will start to be inked one after another, even clean to the point that you can't touch the ink with your hands. This phenomenon is mainly caused by the insufficient use, maintenance and care of the machine by some users. The rubber roller is rarely cleaned. After a long period of time, a large amount of ink skin has condensed on the surface of the rubber roller. Blocking the ink transfer of the rubber roller. If such problems occur, the machine should be cleaned in time to remove excess ink residue on both ends of the rubber roller, ink, dampener residue, paper dust and other unclean objects around the rubber roller part to ensure the amount of lubricant in each rotating part supply. At the same time, under the guidance of professionals, carefully wipe the hard roller repeatedly with fine sandpaper, water or gasoline until the ink skin and transparent objects are removed. Remember, you can't put the sandpaper on the hard roller and wipe it with the machine, it is easy to damage the hard roller, because there is a thin layer of rubber compound on the surface of the hard roller. After the rubber compound is damaged, the roller must be replaced. In recent days, many users have appeared that the rubber roller is not inking at the same time, which has caused us a lot of trouble. First check, repair and adjust the machine, it has no effect. Remove the residue of the rubber roller by gently wiping with fine sandpaper repeatedly, and found that there is also an unknown white penetration inside the rubber roller. After replacing the new rubber roller, this phenomenon began to appear slowly again in about a week. At the same time, a large amount of white powdery deposits were found in the water tray of the machine, which was thought to be paper dust. After replacing a variety of papers, the rubber rollers were still not inked. It also changed the test of different dampening agents. Among them, "Qingyu brand dampening agent" can reduce the precipitation in the water tray a lot, but the phenomenon of no ink is still there. Finally, under the guidance of relevant people, it was discovered that recent inks, especially some economical inks, are mixed with "talc powder", which is harmful to "talc powder". The white precipitate in the water pan is "talcum powder", and what penetrates into the rubber roller is also "talcum powder". This kind of ink mixed with "talc powder" has no obvious effect on the ink-separation machine, and it has a very serious effect on the 1800 offset printing machine with water-ink mixing. Approach: First, stop using ink mixed with "talc powder" immediately; Second, remove all the rubber rollers that can be loaded and unloaded, and wipe them carefully and repeatedly with gasoline. Third, use "cleaning paste" to wipe repeatedly; Fourth, it has been proved by experiment and practice that "Hanghua MX-581 fast solid black ink" is recommended, which can quickly solidify the "talcum powder" that originally penetrated into the rubber roller to repair the original injured rubber roller ; Fifth, after a week or so, basically all rubber rollers are back to normal work. EFCOOKWARE is a professional manufacturer of cast iron cookware. We have thousands of items can be provided, including dutch oven, casserole,baking pot,grill,skillet,pans,jambalaya pot,as well as potjies. 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