Development process and technological process of t

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The development process and technological process of digital proofing

proofing is an important part of printing, and often the key to the settlement of printing order disputes is proofing. Whether the enterprise realizes the needs of customers and whether customers need to fulfill their payment obligations all depends on whether the printed matter matches the sample. If the printed matter and samples are within the allowable error range, the customer must pay the fee; On the contrary, if the enterprise fails to fulfill its promise, it is likely to compensate the customer for the loss except that it has no right to require the customer to pay. It can be seen that proofing is an essential link and an important means to protect the interests of enterprises and customers

nowadays, the proofing methods in the printing field can generally be divided into two categories, traditional proofing and digital proofing. Traditional proofing is to get the printing plate according to the steps from the original to the film to the printing plate according to the mechanical properties of various springs tested by the spring testing machine, and then get the sample of simulated printing through the simulated printing method of the proofing machine. Digital proofing includes digital proofing and screen proofing, which is based on the digital publishing and printing system. In the process of publishing and printing production, the graphic information of the page is processed according to the publishing and printing production standards and specifications, and the data information is used to directly output the sample of analog printing

traditional proofing is a proofing method that simulates the printing operation process. To a certain extent, it is very close to the printing environment. From this perspective, traditional proofing has unique advantages. However, according to the current development trend, it is imperative for digital proofing to replace traditional proofing, because the benefits of digital proofing to enterprises can be seen:

1, cost reduction. The cost is divided into fixed cost and variable cost. The fixed cost of proofing is the cost of proofing equipment, occupied plant space and consumables. Of course, the variable cost of proofing is the salary of proofing operators

equipment cost. Traditional proofing machines, imported monochrome machines are more than 1million yuan, and domestic machines also need about 300000 yuan. In digital proofing, about 130000 digital proofers, color management software and measuring equipment are needed for digital proofing; Only about 90000 monitors, color management software and measuring equipment are needed for screen proofing

plant space cost. The placement of traditional proofing light proofing machine needs about 50 square meters. Digital proofing whether digital proofing or screen proofing, a room of 10 square meters is enough

consumables. Traditional proofing requires the output of film and printing plate for each proofing. If the color originals are output in four colors, there is also the cost of ink and paper during proofing. The requirements of digital proofing consumables in digital proofing are relatively higher, special ink and special paper, but there is no other consumption, and the overall consumption is still less than that of traditional proofing; In addition, as the screen proofing in digital proofing is a soft proofing method, there is no specific sample and no specific loss, so the cost of consumables is almost zero

operator salary. Traditional proofing requires not only special traditional proofing masters, but also high requirements for film output and printing plate output personnel. In digital proofing, whether digital proofing or screen proofing, many people can complete the operation as long as they have simple training because the current operation software is very perfect and intelligent. Generally speaking, the more professional people are, the higher the salary is. For traditional proofing, the overall salary of operators is much higher than that of digital proofing operators

cost is the key to the profit and loss of an enterprise. No matter which enterprise, cost is their lifeline. For enterprises that have been using traditional proofing and whose production can proceed smoothly, investing in digital proofing is an unknown new attempt for them, but from the perspective of long-term profitability, many enterprises still have confidence in this new proofing method

2. Speed up. With the acceleration of people's work and life pace, the printing production cycle is also constantly shortened. The speed of proofing is a key factor. If the sample is determined earlier, problems can be found earlier, and printing can be realized earlier

preparation time. If traditional proofing can be carried out, first there must be the processed manuscript, then output the film, then get the printing plate, and finally go to the traditional proofing machine for proofing. If this process is smooth, it should also be calculated in hours. If there are problems during this period, it may take half a day or a day. Digital proofing only requires processed originals, and then you can directly go to the digital proofing machine for digital proofing, or directly enter 3 in the display Condition storage of tensile stripping testing machine: the experimental control data and sample conditions can be made into module line screen proofing

proofing time. Traditional proofing requires a period of equipment debugging. Because traditional proofing is achieved by simulating printing, similar to printing, traditional proofing machines also need to run for a period of time when they are on the machine to achieve a stable state. Digital proofing generally does not have such a debugging period or such a short time, which greatly saves time. Generally speaking, it takes about 14 minutes for digital proofing to print a folio photo paper with a resolution of 1440dpi and 720dpi, and the time for screen proofing is even shorter. As long as the screen is in normal operation, ICC files can be loaded at any time to display the printing effect

there is no doubt that the speed of digital proofing is definitely much faster than traditional proofing, and problems are found in time without wasting film plates. Especially in today's popular CTP (computertemplate) process, digital proofing meets the needs of the process well

3. Simulate the printing effect well

content simulation. Traditional proofing uses printed plates for proofing, which is a mechanical operation. There is no loss of data, and words and graphics and images are sure to be consistent with the printed matter. Although digital proofing does not use printed plates to get samples like traditional proofing, due to the development of modern technology and the improvement of the process, generally there will be no errors in the content, and the preview function can be carried out before digital proofing, and the screen proofing can be carried out again without loss, thus further ensuring the accuracy of the content

color simulation. The reason why traditional proofing has not been abandoned by enterprises is that it simulates the printing environment very truly. Printing plate, paper, ink and even mechanical operation can simulate printing conditions, so the simulation of color is very real and close. Although digital proofing does not have the real proofing environment as traditional proofing, due to the color management tools, the factors that affect the color from prepress to printing and even after printing can be taken into account. Standardized management can be carried out to ensure the accuracy of digital proofing analog printing color. Moreover, due to the digital management of many processes, the whole production line is more standardized and the predictability of production is higher

so far, digital proofing has been able to meet the needs of users in the effect of analog printing. Like traditional proofing, digital proofing can be accepted by users and used as the basis for signing samples

the development of printing proofing towards digital proofing has become an irreversible trend. Many printing equipment suppliers have seized this opportunity to constantly introduce a new generation of digital proofing technology to the market:

1, hardware

digital printers. For digital proofing, digital printers are the most important hardware equipment, and now the requirements of the market for digital printers are: fast, accurate and precise. Fast, that is, the printing speed should be fast. An important reason for enterprises to choose digital proofing is that the digital proofing speed is fast, but this requirement does not end. Users should not worry, especially for newspapers and other high timeliness enterprises, speed is an important factor for survival. Accuracy refers to the accuracy of color. Generally speaking, printing can be a color reproduction process. For current printing, the main improvement direction is how to achieve the consistency of color from the original to the printed matter. Therefore, the accurate reproduction of color of digital printer is a factor that must be emphasized. Precision is the degree of accuracy, that is, the resolution should be high. The resolution determines the clarity of the sample, which is also the key factor for customers to judge and sign the sample

according to the current market requirements for digital printers, famous brands such as Epson, HP, Canon and so on have launched a new generation of digital printers. Epson launched the epsonstyluspro7800/9800 eight color printer specifically for digital proofing, which has greatly improved the speed, ink and even media on the basis of the original four series printer. HP introduced a new concept designjetz2100/z3100. In addition to the introduction of 12 color ink large color gamut technology, it also innovatively embedded a spectrophotometer measuring equipment using gelinda I1 technology to improve the efficiency of color management. Canon launched imageprogramf5000/9000. The most prominent feature of Canon is that it also adopts 12 color ink large color gamut technology, and also adopts a number of nozzles as high as 30720, realizing high-precision printing

in order to seize the market of digital proofing, equipment merchants are trying to improve technology and reduce costs, so that the threshold for printing enterprises to enter digital proofing is reduced, and the technology of digital proofing is improved, which has well promoted the further development of digital proofing

display. The screen proofing operation is required, and the performance of the display cannot be ignored at all. To proofing the screen, the most important thing for the display is wide color gamut and high stability. So far, the most frequently used screen proofing displays are apple and Yizhuo. On the one hand, their displays do achieve a large color gamut and high stability. On the other hand, a series of displays of these two businesses have passed the authoritative swop certification, which means that the display used for screen proofing is licensed, This also gives customers and enterprises a basis for evaluation. Apple now recommends apple20 cinemadisplay, apple23 cinemadisplay and apple30 cinemadisplay as soft proofing displays. These displays have outstanding features such as high definition, no jitter, wide viewing angle, fast response ability, all digital connection, and perfect integration with powermacg4. They are new technologies improved by apple to meet the needs of soft proofing on the screen. Eizocoredgecg220, eizocoredgecg210 and eizocoredgecg21, CG series of monitors launched by Yizhuo, are mainly aimed at art reproduction, high-end printing and screen soft proofing. Therefore, there is no problem for different models of monitors in the series to cooperate in screen proofing. In addition, some big brand businesses such as Sony have also begun to enter the screen soft proofing market

measuring equipment. The key to the success or failure of the digital proofing system lies in whether the color management is done well. The color management can restore the bit color accurately. At the same time, it is also related to the safety of every staff. The analog printing effect is good. If the color management is not done enough, although the performance of the digital printer or display is high and the samples are beautiful, it still cannot match the printing. There is no doubt about the importance of color management, and the accuracy of measurement equipment affects the effect of color management. Therefore, measurement equipment has also become a pending issue

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