Technology Development Overview
High-speed inkjet printing technology is a non-contact printing technology, and its development and application are limited by the constraints of inkjet accuracy, substrate adaptation to ink, overall system stability, and unit printing cost and productivity.
The common high-speed inkjet printing technologies currently on the market mainly focus on thermal foam inkjet technology represented by HP, and piezoelectric inkjet technology represented by Canon Océ and other Japanese manufacturers. Ink technology), and continuous inkjet technology represented by Kodak. The development of inkjet printing technology mainly starts from the development of the principle of inkjet print head technology.
1. Thermal foam inkjet technology
The number of nozzles per inch of thermal foaming inkjet head is up to thousands. The nozzles are quite fine, which can produce rich tones and smooth mesh tone, and the image quality is relatively fine. The ink jet has high initial speed, fast frequency, and high printing speed. The ink path is simple and there is no need to recycle ink, and no waste liquid will be generated during production. The disadvantage is that the inkjet head has a certain life and needs to be replaced, resulting in increased costs. Hewlett-Packard has invested a lot of research and development efforts in this regard to increase the life of the nozzle, while reducing the manufacturing cost of the nozzle.
2. Piezo inkjet technology
Piezoelectric inkjet technology can effectively adjust the size and use of ink droplets by controlling the voltage. Compared with thermal foam inkjet technology, piezoelectric inkjet technology has the advantages of relatively regular ink droplet shape, controllable ink droplet size, and relatively long service life of inkjet head. However, its printing speed and resolution are inversely proportional, and its production capacity is generally low. The cost of the inkjet head made by piezoelectric inkjet technology is relatively high. The disadvantage is that once the nozzle is clogged, no matter the cost of dredging or replacing the inkjet head is high, and it is not easy to operate.
3. Continuous inkjet technology
The continuous inkjet system has the advantages of high frequency response and high-speed printing. However, the structure of this type of inkjet printhead is relatively complex, requiring a pressure device, a charging electrode, and a deflection electric field, which is difficult to mass produce. At the same time, due to the complexity of its print head structure, it must be printed and dried separately in monochrome groups. If four colors are printed at the same time, the quality requirements of the paper will be very high, otherwise the problem of inaccurate registration due to paper deformation .
At present, various manufacturers are improving inkjet technology through various ways.
Hewlett-Packard mainly increased investment in two aspects to improve its inkjet printing technology. The first is the official release of the 2400dpi nozzle technology in February 2015, and the installation of the customer ’s site was achieved in November of the same year. Through the 2400dpi high-resolution print head technology, the problems of large particles and color transition divider lines, which were often seen in inkjet, have been greatly improved, and the printing quality has been very close to the level of offset printing. HP will showcase its high-resolution inkjet models at drupa2016. The second is online pre-coating technology. As we all know, one of the main problems of inkjet is "picking paper", and inkjet special paper is usually a foreign brand and expensive. And HP's "adhesive" (that is, on-demand coating) technology can achieve good color saturation and prevent through-printing on ordinary offset paper. But because the water-based ink is difficult to be absorbed by the coated paper, the printing effect is usually not good. A few days ago, HP has officially released online pre-coating technology and coating liquid, which can perform "hydrophilic pretreatment" on many common coated papers on the market to achieve higher quality inkjet printing.
The development of piezoelectric inkjet technology mainly depends on several printhead manufacturers, such as Kyocera, Hitachi, and Panasonic. It is said that the high-resolution nozzle will be launched soon, and it is expected to be seen at drupa2016. At present, many inkjet equipment manufacturers achieve the so-called "1200dpi control accuracy" by staggering two sets of 600dpi nozzles, which can obtain more exquisite print quality at the expense of printing speed (halving the printing speed), but at the same time It also caused an increase in equipment manufacturing costs.
Kodak cooperated with domestic manufacturing manufacturers to produce special pre-coated paper, but because the overall amount is not large enough, the price of the paper is still maintained at a relatively high level. It is also reported that Kodak will release a faster high-speed inkjet printing equipment, but Kodak has recently prepared to sell its inkjet product line, and we will wait and see how it will develop in the future.
Application status analysis
The current high-speed inkjet printing technology has a certain gap compared with traditional offset printing. In the foreign direct billing market where high-speed inkjet printing is widely used, the development in China is not smooth. At present, the application of high-speed inkjet printing technology is mainly concentrated in the field of publishing.
However, we believe that the current application of high-speed inkjet printing in the field of publishing is still limited to short-run printing, and it does not really reflect the advantages of digital printing. Only by integrating the sales channel into the supply chain can we really achieve " "Sell first and then print" to achieve on-demand printing. For example, Rotomail, the world's leading on-demand printer, uses high-speed inkjet printing to produce a single book with different formats and different papers on a production line. It can process 10,000 such orders per day. In addition, as domestic newspapers have also experienced a large decline in print volume (most of the decline is between 30% and 40%), they can also make full use of the advantages of digital printing to launch more newspapers targeted at niche readers, or follow the Newspapers with content breakdown by region also have a lot of foreign success stories in this respect, such as Symeta in Belgium and CSQ in Italy.
At present, Beiren Group has developed and launched a comprehensive solution for on-demand publishing and printing for the Chinese publishing industry, including:
(1) For large-scale printing and publishing, Beiren Group provides intelligent and digital publishing and printing solutions, that is, traditional printing equipment transformed with intelligent and digital technologies, and relies on industrial robots and intelligent technologies to break the isolated islands of the printing process. Thereby greatly improving printing efficiency and quality, reducing costs and waste;
(2) For small batch publication and printing, Beiren Group provides digital printing solutions, which is a complete solution that includes both digital printing presses and digital post-press equipment, and also enables Chinese users to "afford and use smoothly" , Well used "digital printing solution.
High-speed inkjet printing also has certain application potential in the field of packaging printing. Due to the relatively low operating cost of high-speed inkjet printing, it is very suitable for digital printing of packaging cartons. Existing equipment suppliers have launched special high-speed inkjet printing equipment for the packaging field. For example, HP has released two single-sided corrugated inkjet printing. Equipment-HPPageWideWebPressT400S and HPPageWideWebPressT1100S, there are also many customers in China who are watching and investigating. I believe there will be news of successful installation and application in the near future.
However, at present, there are still many packaging companies that are reluctant to use digital printing, mainly due to the high cost of equipment and consumables; compared with traditional processes, the productivity of digital printing presses needs to be improved; they cannot fully meet the requirements of finishing and packaging Specific functions, etc. In view of these aspects, Beiren Group proposed to install digital inkjet units on traditional packaging equipment, combining the cost and quality advantages of traditional printing, and the variable information advantages of digital printing, to form new traditional printing and digital with excellent cost performance. Printing integrated hybrid printing equipment, thus bringing new profit growth points to users.
Label digital printing is a mature market with more competition. Due to the application of traceable labels promoted by national policies such as medicine and food, digital printing has been widely used in this field. However, for most domestic label companies, the application of digital inkjet printing is mainly focused on inkjet printing. With the increasing demand for personalized and anti-counterfeiting information in the label market, digital inkjet printing will become an important means for individual companies to implement personalized, diversified and anti-counterfeiting label printing. 
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