Pvc Fence Gate,Pvc Portable Fence,Picket Fence Gate,Plastic Fence Gate ZHEJIANG DEQING GONAT FENCE CO.,LTD , https://www.gonatpvcfence.com
The status of domestic digital proofing technology
Digital proofing technology has evolved with the development of control technologies such as computer and printer technologies and color management. The idea of ​​digital proofing was proposed early in the development of color desktop publishing systems. However, limited by the hardware technology at that time, the only devices that could be selected were IRIAS, 3M, and other small models, regardless of the effect, speed, and system of printing. The overall price cannot be widely accepted, so it has not been widely available.
However, with the rapid development of the IT industry, printer technology has also been continuously improved, thus providing a broad prospect for digital proofing. In just six years, digital proofing has made great progress in China. As a world-leading global supplier of solutions for computing, imaging and services, Hewlett-Packard has a unique advantage in the printing industry. In response to the ever-increasing segmentation of the current market, HP is launched in due course according to the different needs of the printing and publishing markets. DesignJet 5000, Hewlett-Packard "photo hand" HP DesignJet 10ps/20ps series, HP DesignJet 1000 and many other digital proofing products, break through the constraints of many years of hardware technology plagued the manufacturers, paving the way for the development of digital proofing in China. It is with the help of hardware manufacturers represented by Hewlett-Packard Company that digital proofing can make great progress in six years.
In addition, as the largest share of the printing market in China is offset printing, digital proofing technology first breaks through offset printing. Beijing now has prepress companies with digital proofing as the mainstay, and its business volume is still growing. For example, Shangpin and Shenglanhong have demonstrated that digital proofing technology has been accepted by the printing industry. For example, St. Rainbow Co., Ltd. has become one of the first users of digital proofing technology. He purchased the HP Designjet 5000 full-format digital proofer and completely changed the current working status. Digital proofing machines can not only be used as a tool to replace the traditional proofing, but it can also be widely used in every process of our production to help the company conduct internal quality management. Now, dozens of direct plate-making systems have been introduced in China, and digital proofing equipment is a necessary part of the digital proofing system. It is expected that with the popularization of direct plate-making techniques, digital proofing technology will develop rapidly in the field of offset printing.
However, digital proofing technology is not only applicable to the field of offset printing. It is also applicable to gravure printing and flexo printing. It should be said that gravure printing and flexographic printing are more difficult, the cost of plate making is higher, and rework is more likely to occur. The damage caused is also greater, so it is urgent to solve the problem of digital proofing. Gravure printing and flexo printing are mainly used for packaging and printing. The law of color reproduction is different from that of offset printing. It has some special features, and it often uses spot color printing, which has higher requirements for the color of digital proofing and is more difficult. It may be very difficult to completely simulate the proofing effect of gravure printing and flexo printing. There are still some technical problems that need to be solved, but if you can actually simulate 80% of the proofing workload, reduce the scrap once or twice, and digitize the proofs. You can get very good economic benefits.
Digital proofing technology requires a practical digital proofing system consisting of hardware and software.
Hardware products
1. The printer has enough print accuracy to print the image to achieve the visual effect of the print. Many color printers use FM screen printing, which requires the printer to have a print resolution of 1200 dpi or more.
2. Has a large enough print format. If you use a small format printer, you can usually only print a single page layout, and you can not verify the effect of the output plate. A true digital proofing system should have a print format that is consistent with the printing press so that it can fully simulate the effects of traditional proofing.
3. Fast enough print speed. The printing speed may be the index that the user is most concerned about. Only with a sufficiently fast printing speed can the productivity be high enough to bring economic benefits and meet the actual production needs and investment needs.
4. A wide enough range of color reproduction, which is the key to whether it can completely simulate the color of prints. In order to be able to use digital proofing methods to simulate various printing conditions and methods, the actual requirements of the printer's color reproduction range should be slightly larger than the print reproduction range.
5. Cheaper equipment prices and cheaper printing supplies.
Hardware is the basis of digital proofing. The performance of hardware directly affects the development of digital proofing. The performance of today's digital proofing products is no longer the same. The powerful function is enough to promote the rapid development of digital proofing in our country. We took Hewlett-Packard's HP PhotoJet 10ps/20ps series as an example. In terms of speed, the “PhotoManual†series uses advanced thermal foaming (TIJ) printing technology, which further enables the proofing speed to reach the production level. It takes only 4 minutes to print a 13inX19in image in horizontal mode. In terms of precision and color, the “Photos Hands†series uses six color inks through a closed-loop color calibration system, which ensures that there are enough color gamuts to reproduce images. More gratifying is the use of built-in Heidelberg professional color management RIP to ensure the accuracy and authenticity of 24001200dpi high-quality picture output and proofing color. In terms of costs that are most concerned about, photo-shooting is more satisfying. For instance, in the case of octavoking, the traditional proofing needs 50 yuan, while the cost of proofing a proof is about 10 yuan, and four are about 40 yuan. , Cheaper 1/4. The minimum configuration of "hands-on" estimated market price is only RMB 10,000 yuan, which for the first time has broken through the bottleneck that designers have long used to limit the adoption of design proofing programs—high purchase costs. From this, we can see that today's hardware products have met the technical requirements for digital proofing and opened the green light for the development of digital proofing.
The software of software digital proofing system may be a more important factor that directly affects the effect of proofing. The basic functions of the digital proofing system software should be:
1. Be able to receive various file formats produced by various application softwares of color desktop systems. The most common formats are PS, PDF and TIFF.
2. Accurate color reproduction. The accuracy of color reproduction is one of the most important indicators to measure the performance of the digital proofing system. This aspect depends on the strength of the color management function in the software and on the accuracy of the system color adjustment. Therefore, the convenience of system color adjustment or adjustment of the strength of the function has become an important factor for the user's choice.
3. Has the ability to simulate the color of spot colors. Spot color printing plays an important role in packaging and printing. Therefore, whether digital proofing can replace gravure printing and flexographic printing proofing depends to a large extent on the function of spot color proofing. However, there are many kinds of spot colors, and accurate simulation is indeed a troublesome and difficult thing. It is also one of the problems that the current digital proofing system has not yet solved well.
4. Check the function of layout color. When using ordinary color inkjet printers, regardless of the color mode of the document being printed, it will be printed as a color proof, so it is possible to conceal errors during production. When printing plates, the output page file must be a color-processed CMYK pattern file. Otherwise, even if the proof color is correct, it cannot guarantee that the slice is correct or even an output error occurs. Therefore, when the color pattern of the output file is incorrect, the proofing system must be able to reflect it.
5. One RIP function. In order to ensure that the proofs are exactly the same as the printing plate and the printed matter, the user attaches great importance to the same RIP used for proofing and filming, and even requires the use of the same RIP file for proofing and printing, which can effectively avoid mistakes. Therefore, the working mode of proofing software is also an important factor for customers' acceptance. At present, some digital proofing systems are independent. Different RIPs are used for proofing and filming. Although they can simulate the colors of prints, they cannot guarantee 100% consistency between the printouts and the layout of proofing, such as misplaced characters.
6. Layout and folding functions. The proofing format should generally be consistent with the printing format, but usually the page file produced is a single page. If you print directly, it will inevitably result in wasted paper and reduced printing efficiency. Therefore, special imposition software is required to make imposition and copy. The operation. The imposition software can be independent, or it can be a function built in the proofing software. It can not only make the imposition of the PS file before the RIP, but also make the imposition of the dot-file after the RIP.
In today's IT industry, the development speed of software is increasing geometrically. The software industry has become an indispensable aspect of the IT industry. The maturity of digital proofing software has paved the way for the development of digital proofing, which has stimulated the development of digital proofing to some extent. Bestcolor, the world's leading manufacturer of software sales of color management software accounted for 80% of the market, using the more popular RIP. Best company and Hewlett-Packard teamed up with HP to provide the best software with the best hardware products and launched a series of digital proofing systems. It has become a bright spot in the field of digital proofing today, and it also provides us with an opportunity for the development of digital proofing. Reference cases.
In addition, the overall cooperation between the digital proofing system and the digital workflow is also very important. It is directly related to the proofing work method. If the digital proofing system is integrated into the entire digital workflow, such as the function of the network printing, and the cooperation with the production and output, it is very beneficial to improve the efficiency of the entire production. For example: For example, the HP Dijet Proofing System solves the bottleneck that the standard digital proofing curve adopted in Europe and the United States cannot be adapted to Chinese users.
The Prospect of Digital Proofing in Gravure and Flexo Printing
Gravure and flexo are mostly used for packaging and printing, and the printing medium is often plastic and specialty paper. The color of the substrate changes greatly. Using dedicated printing paper to simulate color has certain difficulties, so it must first be able to simulate the basic color of the substrate. . Second, there are many types of spot colors used in packaging and printing, and the problem of accurately printing spot colors must be solved. In the final analysis, how to use digital proofing to accurately simulate the fundamental issue of printing conditions and colors? Therefore, if digital proofing technology is to be popularized in packaging and printing, it is necessary to focus on solving the problem of changing colors, and to provide users with a simple means of setting colors and simulating spot colors, and providing operators rather than professionals. The operating environment. Due to the technical features of gravure printing and flexo printing, there are not many digital proofing products suitable for gravure printing and flexo printing. Hewlett-Packard Company has been committed to the popularization and promotion of commercial printing in various fields. In the most direct printing industry with graphics and graphics, HP more specifically focuses on the accuracy, stability, and high-speed of pre-press proofing. From the simple introduction of “photorealistic hand†performance, HP’s “photorealistic hand†has superior performance in proofing performance compared to other brands and other types of digital proofers. The digital proofing system consisting of the HP DesignJet 10ps/20ps series printers and the Bestcolor color management software from the best-known international company is more suitable for modern gravure and flexo digital proofing.
On the other hand, the current offset printing platemaking technology and production process are the most mature, the highest degree of digitization, the most standardized data, you can get the print control parameters directly from the prepress data. For offset printing conditions, technical services can be completely provided by equipment suppliers and specialized service agencies to perform color correction and other standard operations. In contrast, although gravure and flexo printing also use computer-based plate making, the digital process is still relatively lacking, and the human factors in the printing process are still very large. For example, the ink distribution and the printing materials have a great influence on the printing results. The stability of printing conditions directly restricts the application of digital proofing. Therefore, digital proofing should be applied in gravure and flexo printing. First, the problem of printing stability should be solved. The color gamut owned by HP's "Focus" series printers includes the colors used by printing machines worldwide. When using ICC color
Digital Proofing - The Founder of Tomorrow
Digital proofing is a technology that uses a computer's external output device to simulate the effects of printing and proofing. This technology can directly output the color proofs produced on the computer before outputting the film or plate to check the effect of the production, and it is very similar to the traditional proofing. The effect of proximity is available for customers to sign as a print. The application of digital proofing technology can not only reduce the cost of printing production, save raw materials, but also can significantly increase production efficiency and shorten the production cycle. Therefore, it is a technology that is highly favored by the printing industry and has received widespread attention in the industry.