Inkjet imaging and electrostatic imaging are the two mainstream technologies of today's digital printing technology. Each of the two technologies has its own characteristics. It has its own advantages and disadvantages in different application areas, and it also leads each other in different historical development periods.
In terms of printing speed, inkjet technology is dominant, especially inkjet color machines, which are much faster than laser color machines. Taking the continuous paper color machine as an example, the fastest speed of the laser color machine in the world is only 30 meters per minute, while the world's fastest inkjet is too 750 meters per minute. In terms of printing cost, inkjet is much lower than laser. For example, a laser color machine charges an A4 per sheet at a cost of about 0.40 yuan, while inkjet only costs about 0.05 yuan. In terms of print quality, the print quality of many high-speed inkjets is not as good as laser. In terms of paper adaptability, laser machines are more capable of adapting to different papers than inkjet machines. Moreover, laser machines usually have continuous paper or single sheet paper, which is more flexible and adaptable. In terms of stability, laser technology has many imaging links, complex technology, high failure rate, high maintenance frequency, and more downtime. From a multi-environmental perspective, inkjet technology is more environmentally friendly.
Digital printing can be divided into commercial printing, bill printing, personal consumer imaging product printing, mixed printing with offset printing, book publishing, packaging printing, newspaper printing, etc. In different fields, laser technology and inkjet technology have their own advantages and disadvantages. Take commercial printing as an example to introduce the application of the two technologies.
At present, digital commercial printing color is mainly based on sheet-fiber laser technology. High-end machines on the market such as Kodak's Nexpress, HP's Indigo, Xerox's iGen4, and low-end machines such as Kemei's C650, Canon 7000, Xerox 8000, etc. In this field, the maximum speed of color machine is 3600 pages per hour A3, such as Kodak's Nexpress Se3600, HP's Indigo 7000. The PDF process is commonly used in commercial terminals, and many control parameters related to other front and back printing processes are embedded in the front-end software. Commercial printing paper requires diversity, that is, offset paper, coated paper, and matte powder paper are also required. Both have high printing quality requirements. At present, inkjet technology has not been widely used in this field.
It is very worth noting that the stream inkjet technology product Prosper 5000XL that Kodak launched at the Print09 show in Chicago in 2009 will revolutionize the current pattern of digital commercial printing. Kodak ’s current version of Prosper 5000XL is 600dpi. In the future, 1200dpi printheads will be launched, and the printing screen will reach 175lpi. The printing speed is 200 meters per minute. If calculated according to A4, it can print 3600 pages per minute, which is much higher than all laser machines on the market.
The most revolutionary thing is that Kodak's inkjet digital printer can not only spray uncoated paper like traditional inkjet printers, but also print the same quality of Kodak printing on coated paper and matte powder paper. , Can fully meet the printing quality requirements of commercial printing. Moreover, the cost of consumables is much lower than the cost of color laser machines. When the coverage of an A4 color product manual is between 40% and 50%, the cost of consumables is about 6 cents. On January 27, 2010, Kodak and the well-known American digital printing company Consolidated Graphics, Inc. announced that the first Prosper 5000XL will be installed at Consolidated Graphics, Inc. Kodak Prosper 5000XL will be close to or exceed traditional offset presses in terms of production capacity, printing quality, consumables cost, and paper adaptability. It is the master of future commercial digital printing.
At present, black and white commercial digital printing is also dominated by sheet-fed lasers, such as Kodak's Digimaster series, Océ's 6000 series, Xerox's Nuvera series, and low-end machines such as Canon, Ricoh, Kemei, Océ, Xerox and many other machines. . Similarly, Kodak also launched Prosper 1000, a black and white printer with Stream inkjet technology, at the Print09 show in Chicago in 2009. Because of its good printing quality, low cost, high productivity, and adaptability to a variety of media, this product will also have a profound impact on black and white digital commercial printing.
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