What are the pressure adjustment methods for offset presses?
If the pressure of the offset press is too large or too small during the work process, it will directly affect the printing effect. The following describes the technique of adjusting the pressure of the offset press. 1, the offset press pressure is too large Excessive pressure on the offset press has a major impact on product quality. Excessive pressure can easily form dot deformation, paste, product dark color, and even image distortion; excessive pressure will also accelerate plate wear and roller wear. The adjustment method is: the gear is in the standard meshing state, and the desired printability is achieved by changing the thickness of the gasket. When printing thick paper, the method of adjusting the pressure of the offset printing machine is to reduce the thickness of the blanket of the blanket cylinder and increase the thickness of the liner of the plate cylinder. The slight difference can be adjusted by changing the center distance between the rollers, and the pressure of the ink roller is readjusted. 2, the offset press pressure is too small The printing pressure is the premise of achieving the lithographic offset printing of the offset printing machine. Whether the pressure between the rollers can be borne is the quality of the printing. Offset press pressure refers to the pressure on the basis of the superior transfer of ink, as much as possible to reduce the printing pressure between the rollers. Whether or not the pressure is small is one of the marks that weigh the skill level. 3. The common method for testing the pressure of an offset press is the bar method. The specific operation is as follows: lift the water roller, drop the ink roller, run the offset press at low speed and press it together, and wait until the surface of the three rollers is evenly inked, then stop. Each roller has a ink bar at the parking place, such as the width of the ink bar is uniform and uniform within the numerical value given by the machine, and the ink bar width of the impression cylinder and the blanket cylinder is larger than the ink bar width of the plate cylinder and the blanket cylinder. , indicating that the pressure adjustment is even and appropriate. If the width of the pressure bar is narrow and narrow at one end, it may be that the center distances on both sides of the drum are inconsistent. Article source address: http:// Dermal Filler,Voluma Derm Filler,Hyaluronate Acid Dermal Filler,Injectable Dermal Filler Shijiazhuang Asa Technology Co., Ltd. , https://www.hskinlift.com