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After printing the "universal" printing of new technologies – inkjet printing – inkjet pri

Ink jet Print After following the screen printing is another “universal” printing technology, it is with the computer control technology and the constant development of packaging technology developed rapidly, and now many modern factories and packing line can be automatically applied. Inkjet printing has advantages over other printing methods, such as adaptability, high intelligence, low cost and no pollution. The operator can easily and quickly in the field (sports) the date printed on the packaging, specifications, shelf life, quantity, bar code, etc.. After drying inkjet printing products quickly into the next process immediately. Different from the traditional package printing, inkjet printing no longer need a dedicated pre-press plate and supporting processes.

Advanced inkjet printing systems, the operator simply pressing the keyboard during operation can change the font need to print, symbols and various graphics. It not only can be used to print text and numbers, bar codes can also be extended to achieve choice and user (customer) signs printing security features. Inkjet printing systems have gone far beyond the scope of traditional printing, which in addition to black and white and color printing with features, it also has data processing and information storage capabilities. It is by select (installed) memory storage device can store hundreds of independent coding (digital and character sets, etc.), and ten thousand characters. It is connected with the computer can work records and reports to achieve the collation and printing. When it is connected in series with the host, but also on the packaging (or other printing items on) print out the weight of record coming from a variety of data satellite communications, mapping and other atmospheric cloud. Inkjet printing has been widely used in the scene of various shapes and surface printing of packaging materials, whether there is a hole or no hole, flat or curved surface of the fabric or shape with bones, such as Plastic , Cloth, paper, fur, ceramics, glass or metal. Rate applies to all kinds of printing, whether uniform, variable or intermittent operation, and most suitable for packing non-stop continuous production line operation. In the continuous inkjet printing production line number, date, printing or adhesive labels than other more economical and efficient. Inkjet printing principle, whether for packaging inkjet printing or inkjet printing for the office areas, the basic principle is the same. Now in office inkjet printer, for example, introduce the principle of inkjet printing.

Now on the market There are two main types of inkjet printers: piezoelectric (such as EPSON products) and bubble-type (such as HP, Canon’s products). Piezoelectric ink jet printer nozzle at one end position, the other end is a piezoelectric material (mostly lead – Al – Ti type piezoelectric crystal), Ink The role of deformation in the piezoelectric crystal under high pressure out of the nozzle is, after the ink droplet ejected up into the ink cartridge in a timely manner. Bubble jet printers with thermal resistance near the nozzle, the digital signal applied current pulse transient heat (heating rate up 100 ° C / s, temperatures up to 280 ° C), of the ink for rapid local heating, so that around a small amount of ink to form a bubble boiling. In the bubble pressure drops to be ejected under the action of the nozzle, while air bubbles disappear, and take away the heat. Ink from the storage room quickly fill the gap by capillary action. The development of inkjet printing inkjet ink inkjet ink principle of the decision to have some special properties. First, the ink should have a certain viscosity, surface tension, pH, and other physical and chemical properties. General ink surface tension (3.0 ~ 5.0) × 10-2N / m, viscosity of 1 ~ 3.0mPa? S, pH value of 8 to 9 is more appropriate. Second, the ink should be stored long-term stability, good performance of continuous and intermittent printing, good color, brightness, purity and color saturation as well as water, light, wind and chemical properties. Furthermore, the ink composition can not react chemically with the nozzle, so as not to cause nozzle clogging; ink to clear printing, fast drying, but not in the injection process, or do not use excessive evaporation; ink to print out the images and text should be clean, non-proliferation, lack of ink, and of disparities.

To meet the above requirements on the performance of inkjet ink, inkjet ink composition generally consists of the following components: Solvent , Coloring agents, surfactants, moisturizers, pH value regulator, driers, metal ion chelating agent, preservatives and other Additive .

1970 years, according to different principles of ink-jet technology, a variety of inkjet printers have been developed, and began as a commodity into the market, inkjet printers as non-hitting style in the spectacular new, high-speed, low noise output device, the development of extremely fast.

A result, ink-jet ink has been further developed, particularly for liquid-type color inkjet printer ink. As early as 1974, a German company has introduced a color ink. After that, the major companies to speed up the research of ink, such as the United States, IBM, Japan’s Fuji and so do a lot of work. Especially in 1982, the Japanese company Canon Bubble Jet printers come out after the ink R & D progress more quickly. Canon introduced the first of a bubble-jet printer for the ink. This ink has good storage stability, good performance of intermittent and continuous printing. While major companies have started to be improved ink formulations. For example, the company developed a EPSON ink, ink and paper when such contact, can be added to the surface of the packing paper media solution, an exposed pulp, ink droplets are immediately absorbed, so dry and fast and can keep each blot a high degree of circularity. The problems faced by domestic inkjet printing inkjet printer with its good price, has been accepted by more and more users. However, in the country, further development of inkjet printing technology is still subject to a number of factors. According to the information and the author of the survey on the domestic market so far, China has not really developed a variety of performance are more stable ink-jet ink, so the current domestic market, inkjet ink, color ink-jet ink in particular almost all imports, these import prices are very high ink-jet ink, seriously hinder our inkjet printing industry and related industries. Therefore, improving the performance of ink, especially developed color is good, security, performance and stability of the ink has become the most pressing problems.

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