Analysis of the hottest CD pad printing technology

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Analysis of CD-ROM pad printing technology

the popular CD-ROM printing methods are silk printing and offset printing. Pad printing is a relatively new situation. As a special printing process, pad printing technology is good at fields that have always been closely related to gang printing. Where printing can be applied and the punishment is incorporated into the enterprise integrity management system, pad printing often pays attention to it as a friend

CD is the latest way of information recording in modern society. It can not only record the graphic information originally recorded by books, but also record multimedia information such as sound and video. However, the information recorded in the CD-ROM is not as visible as that in books. It can only be read and written with the help of lasers, that is, it records some "invisible things", which must be restored to the "original state" by modern technology in order to be recognized by people. If you give such a thing to an ancient erudite scholar, he can only see a shining disc. This analogy also proves the importance of printing. Human history has been creating all kinds of black boxes, and printing can make us associate with its mystery. When we print this disc with a brief introduction, the bachelor will understand some of the contents recorded in the disc. Of course, curiosity will force him to smash the CD to search for the contents

when it comes to disc printing, pad printing technology is definitely not just for fun. In fact, the wonderful performance of pad printing technology on CDs has been recognized by more and more people in the industry. It is undoubtedly the most successful to use offset printing to print optical discs. It has the highest resolution and the fastest printing speed. But its speed is too fast. If the number of discs is not very large, offset printing is indeed not an ideal choice. The cost of offset press is not affordable. Therefore, printing often replaces offset printing. There are many advantages of India, but one disadvantage is fatal. When the plate is pressed down on the disc and the scraper is used for scraping, the pressure fluctuates from one end to the other end. Because the discs are thin sheets with a thickness of less than 1.5mm, they are very light and will always be slightly rubbed, which often affects the printing quality. Many CD printing centers can start business after purchasing a few printers. Printing CD is a good thing, but it is not easy to ensure the printing quality. Because the CD-ROM needs to be transferred from one machine to another during multi-color overprint, the CD-ROM itself has no circumferential positioning mark, so it is difficult to achieve accurate overprint

I. advantages of CD pad printing technology

CD pad printing is a must for strategists, and it is natural for pad printing experts to pay attention to this market. The pressure of pad printing comes from the soft and elastic pad printing rubber head. It is pressed vertically from the top of the disc, and the position of the disc will not be affected in the printing process. Since the center of the disc is a central hole with a diameter of 1.5mm, it can just eliminate the problem that the center of the rubber head is prone to blank areas. Multicolor shift means that NASA can greatly reduce the cost of preparing space structures. The printing machine is much simpler than the multicolor printer. Of course, it is much more accurate for CDs to receive multiple printing overprints at the same location

pad printing has always had advantages beyond printing, one of which is that it is very good at small area product printing. Although optical discs are mainly large discs with a diameter of 120mm, the market share of 80mm small discs is becoming larger and larger. Various special-shaped discs and business card discs have been born since then, which all pose a new topic for the adaptability of printing technology. The open workbench mechanism of the pad printing process makes it very convenient to place all kinds of fixtures. It is also very simple to make special glue heads, especially the replacement of the pad printing plate is faster. The rapid gain of pad printing in favor of CD printing is by no means groundless

second, do you need color management

although the CD-ROM carries more value, its requirements for color are far less strict than those of paper publications. The main reason is that the pad printing machine manufacturing enterprises lack understanding of the cutting-edge technology of printing - color management. No enterprise can use the color management technology of other printing processes as the way of pad printing color control, so pad printing has been staying in the color quality space with large deviation. The whole process of film production lacks effective color management means, and its biggest risk lies in the control problem related to the superposition of optical disc pad printing points. Many enterprises are complained about not the problem of equipment, mainly focusing on the difficulty of color to meet the requirements of customer samples stably. Due to the lack of professional technicians to put forward effective improvement methods for color management, color management has always been a problem that manufacturers avoid. They would rather accept the inherent gap of pad printing than frankly point out the solution. Today, when the mainstream printing industry proposes to unconditionally push the quality requirements of customers to the limit, the key reason why pad printing is difficult to compete with them is that the color management of pad printing has not been paid attention to, and has not even been mentioned by most manufacturers

in any case, pad printing enterprises must begin to pay attention to color management, which is the only way for pad printing CD printing to become a favorite. Maybe we can't be as strict as offset printing, but at least we can establish this framework from today, and then gradually improve it. It is necessary for us to realize the digitization of the basic parameters of the film production process, and we should start to use the densitometer. We should understand the color characteristics of our computers, scanners, printers, and laser imagesetters. Only in this way can pad printing technology move forward step by step

III. is the process easy to control

the social demand for CD-ROM products is very large, and printing is one of the essential processes, so it is very important to implement a stable printing process. Is there an easy to control process in CD-ROM printing? The answer is yes

1. CD pad printing ink is very mature

CD pad printing ink has developed into a special series. It not only has adhesion to PC materials, but also begins to pay attention to some characteristics of CD. CD pad printing ink requires certain temperature resistance and friction resistance to resist the negative effects of laser reading and writing process; Discs are also often exposed to sweat, requiring better oil resistance: for background ink, in order to improve the reflectivity of discs when reading and writing, the hiding power should be high. These are no longer difficult things. The CD pad printing inks manufactured by major ink manufacturers can basically meet these requirements

some discs with low requirements may be mainly represented by simple color blocks, but discs with hierarchical requirements require four primary color disc inks. These are very simple things for other printing methods, but in the pad printing industry, some people are very random about choosing four-color ink, so it is impossible to print an ideal CD. Most of the employees in the pad printing industry may have no professional printing knowledge and lack understanding of why they have to choose four-color inks

2. The pad printing adhesive head is a relatively independent pressure device, which moves back and forth on the printing plate and the substrate to transfer ink. The change of its size is generally not affected by the machine structure. A machine can often be assembled with several rubber heads to print products with different printing areas, which greatly enhances the adaptability of products. For CD printing, the shape of the glue head is basically the same. We can all make a circular glue head with a hole in the center. For some special-shaped discs and business card discs, we can use rectangular rubber heads instead

the hardness of the rubber head is another indicator. As a result of the flat pressing of the rubber head, the pressure in the central area of the rubber head is significantly greater than that around it. If the approximate Hooke's law is used to explain it, that is, the compression of the edge is relatively small, and the compression of the central area is relatively large. The harder the rubber head is, the greater the pressure will be required for the printing of the edge area. Of course, if the rubber head is very soft, although printing is easy to achieve, for a relatively fine CD, there will be a problem of unclear graphics and text. This can be achieved by changing the curvature of the bottom of the rubber head × 5 to solve. If printing fine images and eye tone images, the hardness of the glue head should be larger, but the curvature of the bottom should be smaller; On the contrary, for rough printed discs, the hardness of the rubber head can be appropriately smaller, but the curvature of the bottom is required to be larger

(to be continued)

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