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The major equipment for the digital proofing market is divided into two categories:
The main providers of high-end digital proofing equipment are DigitalMatchprint from 3M, Approval from Kodak, IrisRealist from Creo, Fuji FirstProof from Fujifilm, Digital Cromalin from DuPont and Rainbow from Imation. Most of these high-end digital proofing devices use analog printing dots, provide halftone dot proofing, and have independent Rip software support or independent color correction systems. The device imaging technologies mainly include inkjet technology, dye sublimation technology, and solid-jet printing. Ink technology points. In general, inkjet printing technology is slower in speed than dye sublimation printers, and the quality and color accuracy obtained is better than dye sublimation printing. These company's system devices have better simulation of colors and can accurately simulate the printing dots. Most of them are four-color color matching systems to simulate printing colors, but the output width of these devices is generally small. Take Iris as an example, the maximum output width is 500mmX 700mm. The digital proofing sample format is limited, and the price is high, the general market price is more than 50,000 US dollars, and other brands of equipment even up to 20 million US dollars. The above-mentioned use of consumables is expensive, and it is difficult to find alternatives, resulting in relatively high production costs. In foreign countries, Iris has a relatively high market share. Three to five years ago, the only one in the market was a more cost-effective model. In China, only a few large-scale gravure plate-making companies own several such devices. Most printing companies are unacceptable digital proofing devices because of their relatively high prices and costs.
The popular digital proofers on the market today are mainly Epson and HP. Agfa and other products, these products generally use the six-color color matching system, increased light blue, light red ink, improved high-level part of the printer rough graininess. Large cartridge design to meet production needs. Epson, Agfa series uses a piezoelectric ink jet printing technology, ink droplets are small, the smallest droplets only 5PL, delicate picture, fine details, very small grain, printing precision. However, when it is not used for a long time, nozzle clogging is easy to occur, and fine interference lines appear. The new model has been improved, and the ink head can be automatically cleaned at regular intervals. However, the ink consumption is too large, the number of nozzles per color is within 180, the ink jet width of the ink head is limited, the printing speed is limited, and fewer types of paper can be selected. Existing equipment models include Epson 5500 (Super 8 open), Epson 7000 series (610 mm wide), Epson 9000 series (1120 mm wide), Epsonl0000 series (1120 mm wide), and AgfaJet Sherpa 43 series (1090 mm wide).
The equipment used for thermal foaming ink-jet printing technology is the HP series of printers, which features a large number of nozzles per color print head, up to 512, with print heads up to 25 mm in width, and layered overlap. Printing technology, ink thick, rich layers, easy to appear interference lines, ink head can be a single replacement. However, the smallest ink droplet area is larger than piezoelectric printing, which is 12PL, and the picture is more pronounced than the piezoelectric type. There are HPDesignJet5000PS models and four color HPDesignJetl050 and HPDesignJet800 which are mainly used for newspaper proofing.
HPlops is a new type of small format (super eight open) thermal foaming printer. Its minimum ink droplet is only 4PL, resolution up to 24001200 unloading i, this model has fundamentally improved the lack of large particles of the traditional HP model. , Has a very fine effect, the exquisite degree of the image can be comparable with the piezoelectric ink-jet printer, and its print speed is the fastest of the same model of various brands, not only that, but also standard RIP drive, support ICC, the performance to price ratio is very prominent.
The above-mentioned popular inkjet printers have a low cost. The use of low cost, the printing speed is higher than the printing effect of high-grade machine can fully meet the requirements of the contract proofing. However, the FM printing mode of its equipment cannot completely imitate the traditional dot proofing. In the near future, due to the development of application software technology, application software companies have launched AM printing technology that supports the aforementioned models. However, so far, there is still a large gap between the printing effect and the actual traditional network. The effect of the amplitude modulation and proofing of the screen with more than 120 lines is poor, and it cannot reflect the effect of the printing network.
Due to its excellent price/performance ratio and good market prospects and popularity, these devices are currently the mainstream digital proofing equipment in China.
Application of digital proofing software and the important role of color management
Any complete digital proofing system must be equipped with a corresponding printing application and additional color management functions in addition to a high-quality, high-precision printer. This is the key to the digital proofing system. There are many existing digital proofing RIP software. Digital proofing RIP is essentially a dot generator with a color management function. The perfection of the printing function and the accuracy of the color management function are the most basic elements of digital proofing RIP. Print function includes compatibility with file formats (the most common formats at present are Ps, Ti0, print control functions (whether support for cropping, imposition, positioning, lamination, etc.), networking (network printing, hot folder mode, etc.), etc. Color management features include whether to support ICC international standards, spot color proofing, color fine control capabilities, and so on.
Divided from the process of digital proofing can be divided into two categories, namely RIP proofing software and RIP proofing software. RIP pre-proofing software is to output the digital sample of analog printing crystal on the print medium under the premise of color management by directly explaining the electronic file. Its characteristics are relatively small amount of document data to be processed, fast file interpretation, and high production efficiency; because it is not the final output of RIP-generated documents, multiple RIP output processes are used in the production process, and real-world implementation cannot be achieved. Branch proofing function, so for the RIP proofing software how to maintain consistency with the final phototype RIP file consistency and consistency, is the first question to consider. Most of the existing digital proofing RIPs fall into this category, such as BestColorproof, ColorExpress2.0, and Founder Photo 2.3.
After RIP proofing software, the name suggests that means through receiving various RIP data, under the premise of color management, to achieve the same digital proofs and printed matter. Its characteristic is that it uses a multiple RIP output process to ensure that the digital proofs are consistent with the final prints and can be used for proofing. However, the data received after RIP proofing has two forms, one is that the receiving is ultimately generated by the output RIP.
(to be continued)
The application of digital proofing technology and the important role of software (2)
The current major equipment, software and system components used in digital proofing