Offset press technology status, product function and market application introduction (serial 5)

This article is provided by Mitsubishi Heavy Industries Technical Director Morita Morin. I. Development of sheetfed offset presses After years of rapid development, sheetfed offset presses have become so mature in mechanical structure and performance that the corresponding products between competitors have been It is difficult to make a difference. To succeed in the competition, Mitsubishi believes that sheet-fed offset presses must take the lead in the following three areas, including changes in paper specifications (that is, greater flexibility), higher print quality, and improved economics by reducing waste pages. Only in this way, the sheet-fed offset press can survive in the future between the digital wave and the emphasis on mass production. The new Diamond 3000 exhibited by Mitsubishi Heavy Industries at Drupa 2000 is a sheet-fed offset press that is based on the above principles and is aimed at the future market demand. Diamond 3000 can reflect Mitsubishi's pursuit of future type sheetfed offset presses in five areas. 1. Printing quality is higher and more stable. It is possible to produce high-quality printing products with high speed and stability. This is the basis for the future survival of sheet-fed offset printing presses. 2. Being flexible and flexible, Flexibility is one of the most important advantages of a sheetfed offset press. It can be used to print a variety of paper, paperboard and other types of substrates to meet the diversification of many printing companies. The market demand is for a machine's versatility. 3. Reducing exact stoppages and scrappages, increasing production efficiency Faced with the impact of digitalization, and the frequent change of job content caused by more diversified demand changes in the print market, sheetfed offset presses have only automated control and intelligent printing controls. By breaking through, by shortening the exact stop time and reducing scrap pages, users can be challenged to have higher productivity. 4. Compatible with the process of full digitalization How to maximize the advantages of digital data "accuracy", so that offset printing machine really integrates into prepress and postpress processes, is the mission of modern offset press. 5. Emphasizing ergonomics and the surrounding environment Considering the safety of machinery and the impact on the environment is a requirement of society as a whole, and as an offset printing machine manufacturer, it is certainly incumbent on this. Such efforts include increased ease of operation and maintenance, self-diagnosis and prompting for failures, improved appearance of offset presses, and more. Second, the double-sided printing and mainframe in the double-sided flip multicolor offset printing press R & D and production, Mitsubishi directly used the "seventh" clock this popular drum arrangement, as well as double-diameter impression cylinder and the unique use of ink transfer The emulation technology of the ink roller and turning device adopts a 3-roller device, in which the paper-storing roller is a double-diameter roller, which can increase the stability of the paper turnover process and reduce the possibility of overturning the print tear and picking up dirt. For large sheetfed multicolor offset presses, Mitsubishi believes that from the current status and development trend of the market, the demand for large offset presses is a long-term existence, because some customers want to improve production efficiency by printing multiple sides or multiple posts at the same time. . Mitsubishi's 6F5-14000 Extra Large Sheet Offset Press, which was introduced in Drupa 2000, is designed to meet the needs of the market. The format is 1440mm x 1040mm, and the printing speed is 14,000 sheets/hour.