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  HOME >> KNODLEDGE>>Qi-Fu Bin Offset of new technology on 16 (a)
Qi-Fu Bin Offset of new technology on 16 (a)
update:2008-4-25 8:19:35
Offset Printing in the long-term dominated benefited mainly from the technology and Offset offset the continuous improvement and innovation. Now that the sheet offset printing press in recent years for technological innovation and technology to improve the main results matrix, for offset printing press manufacturers and users to provide information.

     1. Without the technical side

     In recent years, the non-technical side of the paper is in constant movement in the process of paper through the sensor continued to edge continuous scanning, and scan data transmitted to the control system, issued a directive by the control system so that agencies carry out a paper-rough - , After fine tuning to ensure that the correct horizontal position paper. No side does not need the technical side of the paper before the positioning and location of the stalled at the time, paper continuous progress, greatly increases the time available, the paper positioning stability, improve the overlay accuracy and speed of machinery is very favorable. The replacement of printing and pieces of living, does not require manual adjustments, reducing the time and adjustments due to the problems caused by improper adjustments.

     2. Sheet no drive shaft to the paper machine

     Application of non-axis transmission technology, will Machine divided into several parts, were using their respective servo motor driven. General separation first, feeding zone and the former regulation, the regulatory side, paper-driven Taiwan's separate movements and so on. It is said that no drive shaft to the paper machine application of the paper can greatly improve the accuracy and stability system, do not have any replacement parts can be isolated from tissue to the thick cardboard and corrugated cardboard and plastic sheets, such as printing of.

     To the machine and printing unit also adopts the axis between the transmission technology to control the printing unit simultaneously with the machine.

     3. No bond for Mexico Mexican system

     Offset for the traditional Mexican system needs a lot of ink roller, complex structure, adjustment problems, slow ink balance. People have been on both simple structure, and good performance for the Mexican system. No Mexican system is key for Mexico's most successful one, this system for Mexico, no ink, no ink keys, not due to ink key changes affect the surrounding area Mose Mexico's problems. Console no longer have control of key installations and Mexico.

     No bond for Mexico Mexican system, the main Anilox Roller knife and scraping ink-jet types and numbers for the Mexican-type.

     4. Ink can change direction and rate of absorption着墨Mexican installations

     Printing the ever-changing, a change to absorb ink devices, it is very difficult for Mexico to meet demand. So Mexico can change the direction and rate of absorption着墨Mexico on a device. Offset sheet structure is a typical Man Luolan Mexican companies can change direction and rate of absorption着墨Mexico devices, as shown in Figure 1. Mexico could change the direction and rate of absorption着墨Mexico devices, according to the different needs of print, can be different combinations (in the printing process can also convert). The benefits are based on the printing situation is different, change direction and flow of ink flow, so as to achieve the perfect effect on Mexico. When used in printing the third stop, and re-printing, ink balance can be achieved quickly, reducing waste rate.

图1 曼罗兰可变匀墨系统

Figure 1 Man Luolan variable ink absorption system

     5. Waterway and can change the way the water supply installations

     The ink system through the first root着墨roll and roll of water between the roll to the middle of a sea change and the water ways. As shown in Figure 2 of the top of the water roll and roll the first between the root着墨Cots can be adjusted, if the intermediate roll left (dotted line position) is a purely conventional wet system, if the intermediate roll closed (solid line position ), Some water can be the first to root着墨roll coating on the printed version. The same as shown in Figure 3 of the wing-roll moist system, a mobile water roll position, and Middle roller contacts, through the first-run version of root着墨roll coating to printed version, if the water roll and roll from the middle, A general humid system. Application of adjustable or removable middle roll, and when necessary can change the water, more conducive to rapidly achieve a stable balance of ink in order to better meet the different print and humid different needs of the changes. Now some high-end offset printing press, has been equipped with such devices.

图2 常规湿润系统

Figure 2 humid conventional system

图3 翼片辊湿润系统

Figure 3-wing roll moist system
 
6. Closed-loop color control systems

     In the printing process, the use of scanning head of the printing control of the screen or scan measurement, the measurement results and standards Mose comparison, beyond the margin, the margin by a computer will be automatically converted to the value of color ink, automatic adjustment for Mexico Volume (eg ink key position), so that color to meet the requirements. Closed-loop color control systems can be an objective judgement Printing color, and without artificial lighting effects. Reduce waste and improve the quality of Indian goods and reduce time-machine, and improve efficiency. With a computer calculation for Mexico, water supply systems, water-and-ink balance to maintain, Mose more evenly. Figure 4 were the presence of color control systems Mose effect of changes in contrast.
图4 是否应用色彩控制墨色变化系统效果对比


Figure 4 Mose whether the application of color control systems in comparison

     7. Embossing, paper-handling dirty drum Fangnian

     Offset double-sided sheet, in addition to BB-Offset is double-sided double-sided printing at the same time, no matter what form of double-sided printing, the Indian side after the End, quickly print another at intervals of time and distance are Short, the first printing of the ink was dry tend to stick to the second group of color-printing and embossing rollers on the roller-paper, caused Nien dirty, string color, ghosting and other issues. Therefore, we must face the second printing unit of embossing rollers and paper-drum surface properly addressed. Embossing rollers in the paper and drum-tops can replace the fiber sets (see Figure 5) and a variety of jacket. Variety of jacket is the common characteristics of the surface through special treatment, a micro-surface roughness (see Figure 6) and with exclusion of Mexico. While this jacket with exclusion of Mexico, but not absolutely do not become Mexico. Therefore, the use of a period of time must be cleaned.

图5 纤维护套

Figure 5 fiber sheath

图6 滚筒护套微糙表面放大图

Figure 6-cylinder jacket surface roughness Enlargement

     8. Installations covered online

     Now sheet-covered Offset also online. If ROLAND700 in color printing before the start of the printed material can be covered. The first printing press in the printing unit on the printing of viscose, the second unit of the film is wrapped rubber roller, when the printed material on the corresponding part of the film Nianshang. This process completed in the normal temperature, completely avoid the temperature on the film and printing material impact.

     9. Offset Printing sheet-drum version of a separate drive

     Man Luolan and high-in sheet offset printing press, the printed version of a single drum-driven, that is, normal working hours, is still used gear transmission. Prepress in the preparation phase, the Indian version of gear undocked from the drum, from a separate printed version of drum-driven motor drive. The main advantages of the unit at the same time-and-for-edition version, cleaning the same time. India adopted a separate version of drum-driven, results of the multi-color offset press Obviously, the more color effects of the more significant. Man Luolan a 6-color machine, 24 hours, to be completed 103 live pieces, each 14 minutes for a printed version, each block printing 1,000 copies, only the printed version of the unit, cleaning, ink preferences at the same time The machines in order to meet the requirements.

     10. Online Cold Hot Stamping

     Online Cold Hot Stamping is a Man Luolan company's patented innovations, the 2006 annual PIA / GATFInterTech Technology Awards. Online Cold Hot Stamping ROLAND700 two installed in the printing unit, as shown in Figure 7. The machines can be installed in any location, based entirely on the need to identify. - Foil before the first unit on the need for cold hot foil logo, a piece of paper for printing adhesive. With the foil-second unit will be bonded aluminum foil (Hot Stamping) in the printed adhesive, the remaining foil from the third unit at the top of the winding body to follow. Hot Stamping without the need for cold, the first and second generating units and other units can be printed as normal.

图7 曼罗兰连线冷烫印装置

Figure 7 Man Luolan connection Cold Hot Stamping device

      Online Cold Hot Stamping has the following advantages:

     (1) printing and Hot Stamping a complete, accurate overlay can be achieved, (2) cold without heating Hot Stamping, will not cause deformation of paper, aluminum foil and the back will not affect the printing, (3) in aluminum foil on the re-printing, To foil the formation of any color graphics and special effects (4) Since the re-printing through the foil can be a different color, so printing without the purchase of various colors of aluminum foil, just to silver foil, Reducing inventory, (5) operators need not master Hot Stamping technology, as long as the technology can be offset, (6) do not Hot Stamping, the unit can usually print; (7) in the old machines can be installed on the cold Hot Stamping System.
 
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