The hottest trend of modern printing digital print

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The trend of modern printing digital printing is the greatest scientific and technological revolution in the 20th century, which has changed the fate of mankind. Everything in our life will be improved to a higher level after digitalization. Digitalization means flexibility, high quality, high efficiency, low price, etc. the plastic recycling granulator will process the waste plastics in daily life and generate the plastic raw materials needed by the enterprise again. It will become the inevitable trend of modern printing

first, the concept and origin of digital printing

there is no final standard definition of the concept of digital printing in the world so far. There are mainly two views: one is the view of the computer industry, and the other is the view of the printing industry. In the computer industry, the technical process of data output to paper is called digital printing, whether it is black-and-white or color. Therefore, people also call the digital printer in this sense printer. In the printing industry, people call the technology that data is directly imaged on the plate cylinder in the printing machine and printed directly as digital printing. As the name suggests, color digital printing is to realize multi-color printing in the same printing process. This technology also has information transmission without printing plate, that is, non-contact printing, such as inkjet printing and printing with printing plate

the printing industry is an information industry with graphic information as its main object. Its main task is to obtain, process and convert graphic information into (color/black and white) hard copy at high speed. If we start from this definition, the existence of printing plates will no longer become a controversial difference. Plate free printing is actually another very important feature of digital printing, which is different from traditional printing. It is precisely because no plate digital printing, any two adjacent prints can be different, that is, the so-called variable information printing can be realized, which is completely impossible for traditional printing; It is precisely because the printed matter produced by the plate free digital printing no longer includes the cost of plate making. The price of printed matter basically has nothing to do with the number of prints. The unit price of printing one piece is basically the same as that of printing 100, 1000, 10000... While the traditional printing contains the cost of plate making, and there is a close relationship between the number of prints and the cost. Because of these characteristics, digital printing is considered to be a kind of printing method that can provide personalized services of information, that is to say, customers can print what they need, where they use it, and when they need it, which is the basic concept of on-demand printing often talked about today

at the print exhibition in Chicago, USA in 1991, Heidelberg company launched gto-di, which is the first color digital printing machine in the world, thus opening the prelude to the era of color digital printing

at the ipex93 exhibition in Birmingham, England, two years later, indigo and Agfa Gewa introduced two novel color digital printing machines, e-print1000 and Chromapress, respectively, which were refreshing. However, both of these machines were put on the market and put into use in 1994. The maximum printing size of the above three color digital printers is A3

second, the advantages and existing problems of digital printing

the advantages of digital printing are mainly reflected in its unparalleled excellent production process, that is, from computer plate making to printing, which is an out and out, 100% digital process, which realizes the direct transformation from digital pages to printing, and there is no intermediate link even printing plates without decomposition at about 185 ℃. Some people may want to ask whether printing can be counted as printing without printing plate, because "printing" in the word "printing" refers to printing plate. Perhaps such a question can only be satisfactorily answered by redefining printing

a large number of words need to be processed in printing. Now, the author can write directly on the computer. After the article is written, it can be modified at any time. After modification, you can either save the article on a floppy disk and give it to the editor in chief, or send it to the Department through email. The Department arranges the articles with a desktop typesetting system, and then sends them to print. The pictures used in printing and the graphics to be drawn can now be done efficiently and accurately with computer-aided drawing software. For the photos to be used in printing, the scanner can be used to input the photos into the computer. At this time, the color photos become computer data. The photos can be reprocessed with image processing software (the most famous is the Photoshop software of adobe company in the United States). Various deficiencies in the photos, such as underexposure, overexposure, the formulation of relevant industrial standards and indicators, color deviation, defects Blur and so on can be improved through reprocessing, and it is easy to adjust the hue, contrast and brightness of photos. Using image processing software can also make the static picture dynamic, and different photos can be spliced into a picture without any flaws

in order to get photos, you can also stop using traditional photography technology. The digital camera eliminates the development process. When the photographer presses the shutter, the photos can enter the computer for further processing

traditional color separation uses red, green, blue and other color filters. When using computer processing, the computer first calculates according to the scanning data to obtain CMYK color separation data, and then outputs four-color film. Therefore, the color separation data can be adjusted according to various factors such as the brand of ink, the dot expansion rate, the length of black tone and so on, so as to meet various needs

Although digital printing has many advantages, there are still some serious obstacles to its popularization. Here we quote Hans peetz Larsen, President of Heidelberg US branch, in a speech last December. In particular, he mentioned the ability of digital printing presses to change images page by page. He said, "there is no cutting-edge digital printing technology in the market that makes every page of printed matter have different characteristics." he added: "there is no bandwidth, storage and processing capacity at all". Peetz Larsen said 1 The jaw is not placed correctly during clamping "Even if these technical barriers are overcome, the personalized printing market has not yet been developed, at least not compared with the demand for high-quality color printing with a printing number of more than 250 pages." as far as China's situation is concerned, the core technology of digital printing machine is digital high-speed color hard copy technology. In this field, we basically have no industrial foundation, and we are still dominated by foreign manufacturers. In fact, the situation is basically the same in other application fields of hard copy technology Such as copiers, fax machines, laser printers, color inkjet printers, etc. Although it is not impossible for us to start from scratch in this field, it is also full of difficulties. Maybe we can only take the development path of introduction, absorption, digestion and innovation

although there are still some defects in digital printing, it still has its powerful advantages. Showing broad prospects

third, digital printing is a new printing mode in the early 1990s, which has only 10 years of development history. At the initial stage of its emergence, this technology is considered to replace light printing and become a major printing method in the short print market. The best printing number is set at one to hundreds (or thousands). This view mainly focuses on the cost advantage of digital printing at low printing numbers. Undoubtedly, digital printing does have an advantage in this regard, but if digital printing is only positioned in the short edition printing market, it can certainly be said that it is a little overqualified. Personalized on-demand service of information should be said to be the greatest strength of digital printing, which is beyond the reach of traditional printing. If digital printing technology and network technology are combined, this advantage will be further reflected, opening up a new printing market and providing on-demand services of graphic information

digital printing develops fastest in the United States, one or two years slower in Europe, and slower in Asia (including Japan). Its development in the United States mainly depends on the economic background, social concepts and habits of the United States. Specifically, over the years, the economic development of the United States has been relatively smooth, which has brought prosperity and prosperity to the printing industry. Americans' habits of seeking novelty, beauty and speed have stimulated the surge of short version color printing tasks, and increased the demand for "on-demand printing" and "personalized printing". Therefore, "digital printing" has thrived in such a climate, environment and soil

digital printing is still in its infancy in China. It needs not only technical support and improvement, but also the transformation of market concepts and habits. If the majority of people inside and outside the industry still remain in the view that they do not ask for submission by hour or even by day; It is only required that there is no error in the printed copy and there is no major deviation in tone; It is also appropriate to count on tens of thousands of prints for color prints, and there is no "personalized" requirement; The vision of printing enterprises has not yet crossed national boundaries, and so on. Digital printing will not have great development for the time being

market demand and technological development complement each other. Demand stimulates technology, and technology promotes demand. Digital printing is no exception. It can be expected that Shanghai should be a city with rapid development of digital printing, because it will be a key city for the development of finance, trade, economy, transportation, telecommunications, etc. in China, and it is also a concentration of a large number of foreign-funded enterprises and foreign personnel (including returned overseas students). Their ideas are greatly influenced by overseas countries and will promote the transformation of ideas in the printing market. Therefore, digital printing is in Shanghai, Even big cities such as Beijing and Guangzhou are likely to become lively in the next three to five years

in recent years, the tide of digital printing technology has begun to sweep the mainland of China, and the landing speed of direct plate making technology has far exceeded our imagination. The progressiveness of these technologies is not limited to these technologies themselves. If they are developed together with other peripheral technologies, they will be doubly reflected. Similarly, the comprehensive application of these technologies also needs supporting environmental conditions. Without supporting environment, it is difficult to imagine that these technologies can give full play to their functions and advantages. But one thing is certain, that is, the potential huge economic and social benefits of direct plate making and digital printing will sooner or later promote their comprehensive promotion and application in China, and will open up a huge market

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