Wuxi Zhongjiang color printing about Mitsubishi printing machine
At present, the sales volume of Mitsubishi printing press in China is increasing rapidly, which is characterized by convenient operation. The paper delivery mechanism of Mitsubishi machine adopts high point closed teeth mechanism, so its speed can reach more than 17000 rpm. Its mechanism design is quite unique. The roller adopts taper bearing, which is convenient for installation and debugging. To maintain high precision, the key depends on the quality of bearings and the technical level of installation and commissioning. The presser foot structure also does not have a blower. In addition, the Feida part adopts 4 paper separating suction nozzles and 4 paper feeding suction nozzles, which have good adaptability to paper. The double-sided printing equipment developed by the second-hand Mitsubishi printing machine has a unique structure, with the front four groups of ink on top and the back four groups of ink on the bottom, so the paper does not need to be turned in the printing process. In addition, other devices such as drying can be added in the middle. The feature of this structure is to eliminate the turnover mechanism. The disadvantage is that the machine occupies too much area and is not as convenient as the equipment of other manufacturers (the equipment of other manufacturers can be used for five colors or 4 + 1). It has strong adaptability and no adjustment (no adjustment below 250 / m2). The drum is equipped with a damping mechanism. Printing fine movable parts has high requirements for operators. The maintenance is quite troublesome.
At present, the second-hand printing machines of these brands have their own characteristics, but generally speaking, the printing quality of German equipment is relatively high, which generally reflects the high printing pressure, good stability and low maintenance rate. Compared with the German equipment, the Japanese equipment has a certain distance, but if the level of operators is high, the printing quality can also reach a high level. Similarly, if the level of operators is low, German machines can not produce good products. For the vast majority of prints, there is no obvious gap between the two machines.
With the popularization and use of JDF process, the second-hand printing of major manufacturers have corresponding interfaces. As long as the relevant information is transmitted to the printing equipment through the Internet, the various process parameters of the whole printing equipment can be adjusted in place according to the specified requirements, eliminating a lot of manual auxiliary labor.
The development trend of printing press mainly focuses on the following aspects: first, the improvement of speed. It is expected that the speed of printing press will gradually increase to about 20000 rpm, and may reach 25000 rpm. Second, the multi-functional is increasingly reflected, especially the integration of post press and printing equipment is a development trend, which is particularly prominent from the drupa exhibition in 2004. The third is the automatic tracking detection system, which mainly detects the ink quantity, water quantity, print quality and other related technical indicators, so as to lay the foundation for the automatic control of the printing machine.
