In the mid-1990s, digital proofing has just started in China. At that time, various related technologies including output devices and color management software were immature. People generally took a wait-and-see attitude towards digital proofing. However, what surprised the industry, especially the traditional proofing equipment manufacturers, is that in just a few years, digital proofing has begun to fully divide the pre-press proofing market. The manufacturers of "cake" traditional printers have stopped manufacturing traditional proofing equipment. Withdrew completely from the market. Printing digitization, especially digital proofing, has become a trend in the domestic prepress field, such as the arrow of the string, which is unstoppable. Data control advantage is unique 1. Cost of use The first is the cost of equipment purchase. Purchasing a set of traditional proofing equipment, in addition to providing matching printing and printing equipment, skilled workers and a large-scale plant are also essential. The current market is a set of high-end inkjet digital proofing equipment, equipped with professional color management software. The insertion cost is between 20,000 and 70,000 yuan depending on the required size. Secondly, the final purpose of proofing is to add a printing process in order to obtain the final satisfactory printing effect. Compared with the traditional proofing and digital proofing, the latter shows more unique technical advantages. The traditional proofing process is complicated and complicated. To be consistent with the formal printing process, you must first output the film. After the PA version is dried, you can use the proofer to output the proofs. Once the obtained proofs do not match the customer's needs, you need to start again. Cause more waste of consumables. 2. Production efficiency As the name suggests, it is the ratio of benefits produced per unit time. Compared with the speed of proofing, the time required for digital single-sheet printing is basically 50% of that used for traditional proofing, and the results are more obvious. If the time required for imposition, printing and printing is negligible, the single-style proofing action of traditional proofing alone requires an average of 30 to 40 minutes for a single print. The current large-format precision printers in the market, the single-sheet printing speed can be controlled within 20 minutes. 3. Quality comparison The traditional operation mode of proofing is semi-manual. The output proofs depend on the level and experience of the proofing worker in terms of ink volume control and color control. It is for this reason that the effect obtained by the proofs produced by the traditional proofing machine is very unstable. According to industry insiders, when traditional proofing was used in the past, the same film was taken out for proofing, and the results were usually different. Digital printing is more stable than traditional proofing because it is automated imaging. Of course, some uncertain factors need to be ruled out here, such as whether the print head is stable, whether it needs frequent forging replacement, or printer clogging caused by the use of non-original ink. Technological innovation is a formidable force 1. If the worker wants to do his job well, he must first sharpen his weapon Digital output equipment and color management software can be said to be the key to digital proofing. How to make better use of the advantages of digital proofing, hardware equipment manufacturers shoulder a heavy responsibility. In recent years, digital output manufacturers have lived up to expectations and have systematically broken through technical bottlenecks. Both the hardware performance of printers and color management systems have improved significantly. Taking the mainstream manufacturer Epson as an example, after high-tech research and development, a new large-format printer Epson Stylus Pro 9800, which is mainly used in commercial printing and pre-press digital proofing and high-end image output, has the advantages of color reproduction, printing speed, There have been new breakthroughs in imaging stability. 2. Consistency of stability and color reproduction The eight-color "Century Rainbow K3" pigment ink applied by Epson Stylus Pro 9800 and the newly added "light black" ink make the printed image qualitatively improved in terms of color accuracy, detail level, and gloss. The fully upgraded gray balance printing effect completely eliminates color distortion, and the color transition level is more natural than previous large format printers. Epson ’s unique micro-piezo printing technology precisely controls the size of the ink droplets. With a maximum resolution of up to 2880 × 1440dpi, it also achieves an excellent printing accuracy of 3.5 microliters for the smallest ink droplets, effectively guaranteeing printing. Color consistency between proofs and prints. In the inkjet process, the print head does not need a heating process, so the chemical composition of the ink will not change, so that a single nozzle can maintain high frequency stability during operation. 3. Speed ​​improvement and cost control The one-inch wide print head in the Pro9800 doubles the print nozzles of the previous generation, reaching 180 per color, for a total of 1440 nozzles. Increasing the area printed by the print head each time it moves, large-format printing has a new fast standard. While increasing the speed, a high-precision motor drive system and position detection system are used. The micro piezoelectric printing technology more accurately controls the size and flight direction of inkjet ink droplets to avoid incidental residual ink droplets. The smallest ink droplet has even reached 3.5 picoliters, each displacement of the print head and paper is accurately recorded, and every detail can be accurately expressed. The micro-piezo print head with long life design does not need to be replaced during normal use, saving the expensive replacement cost of the print head, and avoiding the time-consuming and ink-consuming due to repeated print head calibration. 4. Supporting color management system The color management software part of the entire digital proofing system is also important. EPSON digital proofing machine with the current mainstream color management software on the market can bring users the most perfect color performance, such as Peking University Founder, EFI, GMG, COMPOSE BLACKMAGIC, etc. Combined with these color management software, EPSON digital proofing machine has taken the lead in commercial printing proofing, newspaper proofing, packaging proofing and many other fields. In addition, Epson Stylus Pro 9800 is compatible with different paper sizes, from A4 to A1 + or B0 + format, whether it is roll paper or single-page paper can be easily printed out. It also has great tolerance for the thickness of the media, whether it is on 0.08mm media or a display panel with a thickness of 1.5mm, it can achieve high-precision printout. Its multi-media output characteristics, excellent performance in gold foil, silver foil, rice paper, silk, also meet the special needs of some customers to a certain extent. Of course, while constantly improving its printing control capabilities, it maintains the consistency between digital proofs and printed matter and meets the requirements of various printing special processes. Solutions such as the true simulation of printing spot colors, hot stamping, and hot stamping on printing equipment need to be improved. However, with its unique technological advantages and the continuous self-improvement of digital output manufacturers, we have reason to believe that the spring of digital proofing is bound to last forever.
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