Introduction of Wuxi Zhongjiang Color Printing on Mitsubishi Printing Press
Mitsubishi presses currently have a sharp increase in sales in China, and are characterized by easy operation. Mitsubishi's paper delivery mechanism uses a high-point closed tooth mechanism, so its speed can reach more than 17,000 rpm. Its mechanism design is relatively unique. The roller adopts taper bearing, which is convenient for installation and debugging. To maintain high accuracy, the key depends on the quality of the bearing and the technical level at the time of installation and commissioning. The presser foot structure does not have a blower. In addition, the feeder has 4 paper-spraying nozzles and 4 paper-feeding nozzles, which has better adaptability to paper. The structure of the double-sided printing equipment developed by the second-hand Mitsubishi printing machine is relatively unique. The first four groups of ink are on the top and the latter four groups of ink are on the bottom. Therefore, the paper does not need to be turned during the printing process. In addition, other devices can be installed in the middle. The characteristic of this structure is that the turning mechanism is eliminated. The disadvantage is that the machine covers an excessively large area and is not as convenient as the equipment of other manufacturers (the equipment of other manufacturers can be used for five colors and 4 + 1. Strong adaptability, no adjustment (no adjustment below 250 / m2). The drum is equipped with a vibration damping mechanism. Fine print jobs have higher requirements on operators. Maintenance is troublesome.
At present, these brands of second-hand printing machines have their own characteristics, but in general, the printing quality of German equipment is relatively high, which is generally reflected by high printing pressure, good stability, and low maintenance rate. Japanese equipment has a certain distance compared with German equipment, but if the operator level is relatively high, the print quality can also reach a fairly high level. Similarly, if the level of operators is low, German machines will not print good products. For most printed products, there is no obvious difference between the two machines.
With the promotion and use of the JDF process, the used printing of major manufacturers has a corresponding interface. As long as the relevant data is transmitted to the printing equipment through the network, each process parameter on the entire printing equipment can be adjusted in place according to specified requirements, eliminating A lot of artificial auxiliary labor.
The development trend of printing presses is mainly concentrated on the following aspects: First, the speed is increasing. It is expected that the speed of printing presses will gradually increase to about 20,000 rpm, and may reach 25,000 rpm. Second, multifunctionalization is increasingly manifested, especially the integration of post-press and printing equipment is a development trend, which has been particularly prominent from the drupa exhibition in 2004. The third is an automatic tracking detection system, which mainly detects related technical indicators such as ink volume, water volume, and print quality, so as to lay the foundation for fully automatic control of the printing press.