Inkjet printing directly prints the graphics and text on the computer on the printing medium through the nozzle of the inkjet printer. Because there is no need to touch the printing medium, it can be free from any material restrictions. , Acrylic, Plexiglass, EVA.KT board, leather, silicone, plastic, PP, PE, PVC, fabric, stone and other surfaces for high-precision color printing. And whether it is simple color block graphics, full color graphics or graphics with excessive colors, it can be printed at one time, without plate making, printing and color registration, beautiful colors, realistic effects, image waterproof, sunscreen, wear It has strong adhesion, no fading, easy machine operation and stable performance. At present, common inkjet printer brands are EPSON, CANON and HP.
In the printing industry, the application of inkjet printing is getting wider and wider. On the one hand, it supplements traditional printing methods such as offset printing, silk printing, flexo printing, and gravure printing, and even competes with some traditional printing methods. Its application is mainly reflected in digital printing. On the other hand, it serves traditional printing methods, and its applications are mainly reflected in the digital proofing, blueprint proofing and silk-screen printing plate making and screen making in the field of offset printing.
Digital printing is to print computer files directly on the paper. One sheet is printed without the need for film, plate-making, etc., error correction is possible, variable printing, and printing on demand. Compared with traditional offset printing, its advantages are mainly reflected in the following aspects:
A piece of paper, no need for film and so on. Traditional offset printing has fixed costs due to plate-making, start-up and other expenses, which means that the printing cost of one printed product and one thousand printed products is very close. The advantages of traditional offset printing are mainly reflected in mass printing. The unit cost of each piece of digital printing is the same. On the printing list within a few hundred copies, its price and speed advantages can be reflected.
Can be printed at any time, with printing. The traditional offset printing has a relatively long start-up time, relatively high printing cost, and complicated operation procedures. Digital printing, you can directly print after modifying the graphics on the computer.
Suitable for printing on a variety of media, immediately available. Digital printing can be printed on coated paper, offset paper, plain paper, photo paper, film, light box cloth, gold and silver foil, art cloth, and various special papers, which greatly improves the commercial application of digital imaging. The business can cover the fields of photos, slides, POP posters, business cards, desk calendars, books and periodicals, picture albums, greeting cards, postcards, various types of cards, stereoscopic images, electronic photo albums and so on.
The operation is simple, the use is convenient, the area is small, and the investment cost is small. Compared with offset printing equipment, inkjet printers occupy a small area, are easy to operate, and easy to use and maintain. Each equipment costs about 100,000 yuan. The price of a four-color offset printing machine is usually several million, or tens of millions of yuan. The captain of an offset printing machine is usually about 10,000 yuan per month, and many people are required to operate the machine.
Digital printing has a wider color gamut than traditional printing, bright colors and good gloss. Inkjet printing can print more than eight colors, and the color gamut is wider, which can fully meet the user's color requirements.
Digital printing, because it can meet the rapid printing needs of printed products, the development speed is quite fast, and the development space is very large. In the NAPL (National Printing Guidance Association) survey, when asked which service items you plan to add in the next two years, 48% of the respondents responded that "digital printing services" far exceeded the "electronic printing services" Business "and" Database Management ".
In China, digital printing is also the development direction of the printing industry, and the market for fine color prints within a few hundred copies is growing. Bidding documents, annual reports, product brochures, company profiles, recipes, etc. are all target markets. The pursuit of personalization has become a cultural trend, and the proportion of targeted printed materials is increasing. Major enterprises such as insurance companies, real estate companies, banks, etc. use a large number of personalized business letters, notes and other printed materials to win customers, and the demand for personalized certificates is constantly increasing for government departments and social groups at all levels. Using digital printing can easily achieve variable data printing, the image or text on each page can be continuously changed in one printing. Digital printing is also playing an important role in anti-counterfeiting printing. It can print random color-changing numbers, words or pictures, providing various forms of anti-counterfeiting means. In addition, the online printing market is quietly emerging abroad. Any valuable documents can be downloaded directly to inkjet printing equipment for immediate printing on the premise that there are no copyright, online payment and online logistics issues. [next]
Inkjet printing can achieve a single printing, without considering the printing volume in traditional printing. Because of this, inkjet digital proofing will also be well used in the printing industry. In recent years, digital proofing has become one of the popular technologies in the prepress field of the printing industry. The so-called digital proofing is the data produced by the color desktop system, without any form of simulation, directly output the sample through the inkjet printer to check the image page quality of the pre-press process, provide reference samples for the printing process, and provide users with The basis for signature and printing.
This digital proofing technology does not simply print out color proofs, but uses complex color management software to enable the output proofs to reproduce the matching print proofs, including paper, ink, and printability. . Compared with traditional offset proofing, its characteristics are mainly reflected in the following aspects:
The investment cost is low and the floor area is small. In traditional proofing, imported single-color proofers are all over 1 million yuan, and four-color proofers cost about 5 million yuan. Digital proofing, inkjet printers with four or more color proofs cost about 100,000 yuan, and can use the same paper as traditional proofing. Although the use of ink is still relatively expensive, the unit cost and total cost of proofing are still much lower.
Proofing is convenient and can be modified at any time. Digital proofing does not require film output, plate making and other processes, which not only greatly shortens the total cycle of pre-press design, production, and proofing, saves a lot of raw materials, but also avoids the need to rework after the proofing error is found after traditional proofing Material waste. The digital proofing system can output proofs immediately after the original file is modified.
The stability and consistency of sample output is high. The traditional offset printing proofing, the operator's human factors have a greater impact. During the operation, such as platen pressure, paper table pressure, blanket and liner height, water roller and ink roller pressure, and air temperature, humidity, etc. Affect the effect of proofing. Digital proofing is hardly affected by the environment, equipment, process, etc., and it is not affected by the operator. Its stability and consistency are ideal.
Proofing speed is fast. A large-format, high-resolution inkjet printer is used for proofing, and the time for outputting a full-open proof is about 30 minutes or even faster. For traditional proofing, the time required for a single-color proofing machine to complete four-color large-format proofing is about 2 hours. This has not yet calculated the time required for traditional proofing to require film output and plate making.
The image resolution is high. The digital proofing system uses inkjet printing, and generally outputs FM dots or continuous tone structures. Therefore, as long as there is an output resolution of more than 600dpi, its proofs can achieve the effect of 150lpi amplitude modulation dots. Most color printers can now achieve such image resolution. At present, the output resolution of the EPSON inkjet printer can reach up to 2880dpi, and the HP inkjet printer can reach up to 2400dpi.
In response to the current market requirements for digital proofing, EPSON has launched large format inkjet printers specifically for digital proofing such as 9880/9910/9450/9710. Based on the original 4-color series printers, it has speed, ink and media Great improvement. HP has introduced a new concept of Designjet Z2100 / Z3100 large-side inkjet printer, which improves the efficiency of color management. The imagePROGRAF 8000/9000 launched by CANON adopts 12-color ink large-gamut technology, and uses up to 30720 nozzles to achieve high-precision printing.
At the same time, the progress and development of the traditional printing industry, such as the application of CTP, eliminates the need for film output. In this way, the blueprint proofing in the traditional process can also be achieved by inkjet printing. Blueprint proofing is mainly used for proofreading the design and printing of graphics and texts, and has low requirements for color management. Traditional blueprint proofing, the process is more complicated, first of all, the graphics on the computer are output to the film, and then the graphics on the film are printed on the blueprint through the printing machine, then developed by ammonia fumigation, and finally obtained The sun-dried blue sample. The application of CTP eliminates the process of film output, which also determines that the traditional blueprint proofing cannot be achieved. For inkjet printing, blueprint proofing is a breeze, and the graphics on the computer can be directly printed on plain paper or double-sided paper to achieve the proofreading effect. Moreover, there is no need for film and blueprint paper, the cost of digital proofing blueprint is relatively low.
In this way, the application of inkjet printing in the blueprint proofing of the printing industry is closely related to the popularity and development of CTP, and the prospect is promising. Taking a printing factory in Guangdong as an example, the ratio of PS and CTP plates used by the factory 8 years ago was 10%: 90%, and currently 90%: 10%. According to the article on the printing industry portal "Beisheng.com", China's CTP ownership in 2007 increased by 136% over 2006 to reach 988 units. Compared with the same period in 2008, it increased by 146%. In 2009, it increased by 155% to 2249 units. It is expected that the number of CTP markets in 2010 will reach 3,300. According to the statistics of the Printing Association, there are more than 130,000 printing companies nationwide, which shows that the CTP market still has great potential to be tapped. According to our visits to printing plants in Guangdong Province, inkjet printing equipment used in digital proofing and blueprint proofing generally requires two or more large-format inkjet printers for small and medium-sized printing plants. Larger printing plants usually have ten More than one printer.
The application of inkjet printing in the field of screen printing is mainly reflected in the platemaking and screenmaking. First of all, inkjet plate-making, using a piezoelectric inkjet printer as an output tool, using a special inkjet plate-making film as the output medium, together with special inkjet plate-making software, hanging software and special inkjet plate-making ink High-quality plate-making film. Compared with the expensive laser imagesetter, the cost of inkjet printer equipment is lower. In terms of using consumables, the laser phototypesetting film has a photosensitive coating and is relatively expensive. Generally, the domestic film is more than 30 yuan per square meter. The price of inkjet plate-making film is about 10 yuan / square meter. In addition, the laser phototypesetting film needs to be operated in a dark room, and the inkjet plate-making can be printed in a bright room. At the same time, inkjet plate-making can be output in a large format, without the need for imposition. Inkjet plate-making film, especially large-format inkjet plate-making, gradually replaces laser light to discharge film with its own advantages. In sign printing, advertising printing, decorative plate printing, cloth printing, clothing printing, glass printing, ceramic printing, wood printing Other industries have extremely broad prospects.
Inkjet screen printing is to print screen printing ink on a round screen and a flat screen coated with photosensitive resin. In traditional screen making, parts of the film and text on the film are exposed on a silk screen coated with photosensitive glue through a plate-making machine. Especially in the printing industry, the inkjet screen-making process overcomes a series of deficiencies that were difficult to solve in the past, such as inaccurate registration of the traditional screen-making and screen printing. The production efficiency is improved, the cost of screen making is reduced, and the materials used for fabric printing patterns are more diversified, the pattern design ideas are broadened, the variety development is accelerated, and the quality and grade of products are improved. The application of the inkjet network technology conforms to the modern production requirements of environmental protection, energy saving and water saving.
At present, the application and market of inkjet printing in the printing industry are mainly concentrated in the dominant offset and silk screen. Its application in the fields of gravure and flexo printing will also be further developed. The full digital workflow of inkjet printing is in line with the development trend of digital printing and networking. I believe that in the near future, inkjet printing will penetrate into a wider market and bring more new vitality and opportunities to the printing industry.
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