Modern printing machine feature analysis

In the 21st century, in order to provide more colorful prints to beautify life, people put forward higher requirements for printing and printing machines. What should the modern press be? As far as the current situation is concerned, modern printing presses should have the characteristics of “three highs and four changes”. “Three highs” are high-speed, stable, high-efficiency, multi-colored, high-quality, flexible, and “four modernizations,” ie, digital networking, operation and management. Automation, automatic control, safety and environmental protection.

Driven by the rapid development of modern science and technology, fiber optic technology, computer technology, etc. continue to infiltrate the printing industry, there have been electronic publications, digital printing products, but its proportion is still very small. In China, traditional printing will still occupy an absolute dominant position for quite a long time, and lithography is the main traditional printing method and will continue to maintain this advantage. Therefore, the lithographic printing press is mainly used here as an example to further elaborate the characteristics of the current printing press.

Today's representative modern printing presses are Heidelberg's SM102, CD102, SM74DI, M600, Manroland ROLAND 700, POLYMAN, KBA Rapida 105, COMPACTA, Komori Lisä Dragon 40, SYSTEMX, Mitsubishi DIAMOND 3000, Beiren's BEIREN 300, well-known printing presses such as SEIKEN 65, Drentegeber VOSP, etc., generally have the following features.

High speed and stability

In general, a sheet-fed multicolor printer with a printing speed of less than 10,000 rpm is called a low-speed printer, and a high-speed printer with a speed of more than 15,000 rpm is called a high-speed printer. The medium-speed printing press. The printing speed of modern sheet-fed presses exceeds 15,000 rpm and web presses are 100,000 rpm.

As modern printing presses simplify their own structure and move toward the integration of light, electricity, liquid, gas, and computers, in the smooth printing production process, the re-enhancement of printing speed will become the present. At present, the sheet-fed printing press can print at speeds of up to 21,000 revolutions per hour, and web presses can reach 150,000 revolutions per hour.

High quality and flexible

Modern printing presses also maintain good print quality and flexibility in high-speed operations. Dare to innovate in design concepts, apply current state-of-the-art science and technology, adopt coaxial or non-shaft drive technology, air-guided paper transport technology, ultra-narrow seam and seamless technology, sleeve technology, paper-supply vacuum suction belt drive Technology, integrated new ink infusion technology, pneumatic pressure transmission clutch technology, on-line glazing technology, double-sided printing technology, automatic control technology, no horizontal printing technology. It is the application of these technologies that enables modern printing presses to achieve good print quality and flexibility at high speeds. For example, modern printing presses can be widely used for printing materials ranging from thin paper to cardboard and plastic film. At the same time, modern printing presses can also be quickly, easily, and safely converted from single-sided printing to double-sided printing. Select the glazing method that matches the printing and the drying method that matches the glazing method. In this way, modern printing presses can flexibly meet different levels and different types of printing requirements.

Efficient, multicolor

Modern printing presses further increase efficiency and print color while ensuring print quality. The first-generation presses used automatic cleaning of the ink roller, blanket cylinder and impression roller mechanism, non-stop feeding and delivery mechanisms, new centralized ink transfer technology, automatic control technology, plus the application of prepress technology, before printing The preparation time for pre-adjustment has also been greatly shortened, from the time required for the original 2 hours to the current time of only about 10 minutes, and the number of print colors can be up to 10 colors or 12 colors.

automation

Modern lithographic printing presses have highly automated control systems, such as the CP 2000 of Heidelberg SM102, the PECOM of the Roland 700 of the Roland, the Korachi MC of the KBA Rapida 105, the Press station of the Komori Lisung 40, and the Mitsubishi DIAMOND 3000. COMRAC, Beiren BEIREN 300's CP windows, etc., these automatic control systems are equipped with a digital electronic display system such as automatic ink balance control, automatic print quality monitoring and control, paper size preset control, automatic or semi-automatic loading and diagnosis, etc. .

Digital, networked

Digitization refers to the technology of imaging directly on the layout of a printing press with digital files from a prepress system, which is of great significance to the development of printing presses. The most modern laser technology constitutes the basis of this "direct imaging technology", and the SM74 DI, Komori Project D, and so on all apply digital technology. At the same time, the application and development of network technology can also create a complete digital network environment between the entire printing shop, prepress system, management information system, production management department, and business department, realizing the digitalization and networking of printing. . In addition, with the development of digitization and networking, and the need for printing solutions in the printing market, modern printers are integrated with prepress equipment and postpress equipment to form a printing system that can complete printing solutions.

Operation and management integration

Modern printing presses have a high degree of automation. They have realized the full automation of the entire process from paper handling, automatic loading and unloading of printing plates, to the end of printing, and operating systems. It has become a reality that only one or two operators need to perform operation management for one or several printing operations. The increase in automation can reduce the number of operators and reduce costs, allowing operators to devote more energy and time to the control of print quality.

Safety and environmental protection

Modern printing presses have high safety protection measures and environmental protection requirements. The design and manufacturing of printing presses has moved toward minimizing operator health and environmental impacts such as printing ink, alcohol, dusting, ultraviolet rays, and noise. For example, the KBA Rapida 105 is the world’s first truly green sheet-fed lithographic printing machine with a certificate of environmental protection. The machine uses a low-alcohol and alcohol-free dampening device, and the lower body has a one-piece cast, T-shaped wall. The board installation method not only reduces vibration, but also solves the problem of oil leakage, and finally achieves pollution-free printing. In addition, the design of modern printing presses has applied the principle of ergonomic design, emphasizing people-oriented, coordinating the relationship between the machines, and paying attention to the safety and comfort of the working environment. At the same time, modern printing presses also emphasize the safety precautions of the printing press itself.