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Will inkjet technology warn electronic imaging printing?

Sep 29, 2018 Leave a message

Will inkjet technology warn electronic imaging printing?

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In the seminar, some people think that in the near future, electronic imaging technology will be completely inkjet and will disappear from the digital printing market.


Inkjet technology is very diverse in terms of equipment, from the photo on the desktop, postcards, to the width of 610, 915, 1100mm, from 1100 to 5000mm wide, can be said to eat. The electronic imaging is basically limited by the print width of 315 ~ 320mm. Mainly limited by the use of laser light and octagonal high-speed rotating mirror imaging, but limited the basic width of laser imaging toner printing, especially the octagonal mirror speed of 18,000 per minute is the limit of the mechanical, I want to upgrade to the top only With multi-beam imaging, Fujifilm's CTF has been used. Due to the linear imaging of the platform, the central illuminance is strong. As the side goes up, the long-axis laser illuminance becomes weaker, which also affects the brightness and darkness. This time, the HP Indigo 10000 and sister machine, it is very likely to change the LED imaging to jump off the size limit, reaching 736mm imaging width. If the 1200dpi LED array is bigger, it is not easy to make. The inkjet head now crosses the banner and is also limited to a length of 740mm. However, the inkjet head has X-axis and Y-axis moving imaging, and the platform type has a maximum of 3.05×3.5 meters. This electronic imaging cannot be traced.


The electronic imaging is limited to the flat sheet and the thinness of the reel to 0.35mm white cardboard, and the thick material will not work! Inkjet printing is not only a 50mm platform spray, but also a wide variety of paper, plastic film, glass, stone, metal, wood, leather, etc. The medium is very diversified, this kind of approximation is no contraindication, the electronic imaging only It can be printed on its own single sheet B2, roll-to-roll paper width 750mm.


As for the use of imaged pigments and inks, everyone tends to use nano-materials synthesized by nano-materials. This level of electronic imaging can be flattened in the printed portion, unlike the coarse and thick abrasive pigments. It is necessary to use a thicker layer of toner to spread the print, and the baking curing temperature is also higher, which may adversely affect the paper and the printed medium. Nowadays, the use of nano-pigment is much higher in the resolution of thin lines, fine words and dots. However, the electronic imaging toner must have the ability to charge, in order to do the charge attraction distribution of the imprint image, if it can be changed from the current 5μ (thousandth of a mm) toner to the 1-2μ fine powder, technically It is easy to get, but it is easy to cause the dust to fly in the environment, and it can't fall to the table and the ground for a long time. If the dust is less than 5μ, the lungs can't be removed from the lungs with the cilia. The only way is to stick to the mucous membrane. The secreted protein is encapsulated and discharged into the sputum, which deepens the harm to the body. Therefore, like Indigo's charge imaging ink, the developing charge itself coats the pigment and makes it fine to the nanometer level. Because it is mixed in the liquid ink, there will be no problem of the above-mentioned color dust scattering. For this reason, Xeikon old-fashioned digital The printer factory, on the Xeikon 8800 printer, uses liquid ink to improve safety and resolution, and compete with Indigo and inkjet. In general, if the ink is used with a pigment having a particle diameter of 4 to 50 nm, not only the resolution is improved much, but also the ink nozzle is not blocked, and the color density and color gamut of the nano pigment are better than the existing micron μ pigment. Many can increase the color and gamut performance of printed matter.


In terms of ink types, inkjet can be said to evolve in an endless stream. The earliest water-based dye inks are brightly colored and have a dye particle size of only 2 to 3 nm. They do not block the old large-hole nozzles. It is changed into a pigment that can last for two or three decades. If the bead milling method has the concern of the particle size blocking nozzle, the water-based ink will penetrate the hair-stained pores to make the printing pattern incorrect. Water-based inks will only dry when printed on the fiber paper surface, but the early curing is not easy to be dissolved and rendered. Only the solvent ink of VOC is used on outdoor canvas and plastic, but it is not environmentally friendly. Later, there is IPA isopropanol. The appearance of environmentally friendly solvent inks, together with UV-curable inks, can be used for UV inkjet coating on glass-coated bridges. UV inkjets are used in a wide range of applications, and few materials cannot be UV-sprayed. UV LED curing in energy saving, reducing O3 ozone and heat generation, the use of appropriate spectrum sensitizer, which is near-violet 365 ~ 385nm sensitivity of light synthetic materials, while Latex latex inkjet is water-soluble, the use is very versatile, It must be cured by heat. In addition, there are also hot-melt solid ink jets, which are also very suitable for various types of materials. In addition to poor resolution, they are also very light-resistant and water-resistant. Today, inkjets are used in different textiles and also have different inks, which are used in plant fibers. On animal fiber and petrochemical fiber materials, this multi-component ink can meet the requirements of extreme multi-process and medium materials, and the use of patience, so that only the thermosetting electronic imaging toner printing technology is difficult to look forward to. But at least a new generation of wide-format Indigo 10000 series emerged. Under the re-start of the finer liquid electronic ink, an electronic imaging-based printing equipment supervisor believes that they are rekindling some hopes, although the electronic imaging method will be affected by the market. Squeeze, but it does not necessarily fall, there is still a good future, mainly the improvement of speed, size and resolution.


Some important insights about Landa's Nano graphic nanoprinting method, Dr. Benny Landa, Dr. Benny Landa, published Indigo electronic imaging, liquid electronic ink, and transfer-informatized Indigo P1000 digital printer in 1993, printing quality and peace. The printing is very close, and it does not use curing energy, but the curing method of cooling and fixing. It completely subverts the traditional printing method of lithography and toner printing, and the printing suitability of WS roll-to-roll for trademarks, plastics and foils is also very Well, there was a optimistic market, but because of the financial difficulties, Indigo could no longer invest more money to complete the commercialization of Indigo machines. In 2002, Indigo was acquired by HP and changed to Hp Indigo. A very successful digital printing technology. After ten years of snorkeling, Dr. Landa exhibited six Landa Nano graphic digital printing devices at Landa DRUPA 12, which were divided into large-size single-sided printing sheetfed machines, medium-sized double-sided sheet-fed printers, and small-sized double-sided sheets. Paper printers, large and small size roll-to-roll printers, thick cardboard packaging printers, etc. Dr. Landa claims that the magic of 10-20 nanometer pigments is actually not enough for many inkjet and toner printers. . And Landa's inkjet uses Kyocera's 600dpi spray line. There are also many KBA Rota Jet 76s that use the same technology. So what is the better technology of Nano graphic? It is to squirt liquid ink, and transfer the tape to make the transfer of pigment and mordant. In addition to the elastic transfer zone, in addition to the surface suitability of the media, it is more important that the liquid ink is "wet dry" on the transfer tape. The process was used on the Indigo machine 20 years ago. It is still used on the Nano graphic machine. It is mainly to solve the problem that the wet ink capillary phenomenon will enlarge the print distortion, so that the ink is infiltrated into the back side and the ink color is reduced. The disadvantage of lightening, the dry nano pigment film is very accurate on the surface of the printed body, and the performance of the ink becomes the color of the ink layer. It is believed that this technology will float on the surface of the printing paper and rarely penetrate. Paper is printed, so you can use 48g/m2 micro-coated paper to print deep-sided and deep-colored prints. The effect is very good. This is not possible with water-based inkjet. Only the fast-curing UV inkjet and useless The fruit frozen inkjet Xerox Ci 5000 series is more likely to be done.


Therefore, in the future, small-sized, ultra-thin paper, rich-color prints, electronic imaging including laser, LED imaging and indirect transfer of Indigo machines, including Landa Nano graphic have advantages in some thin paper printing, and Landa's The machine changed to inkjet, and the size has been broken.

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