1. Pre-press technology: Innovative development for high-quality printing needs
As we all know, China's economy has sustained rapid development and globalization for more than 20 years. It has led Chinese printing companies to learn from and learn from international advanced technologies and experiences, and shifted from a technological transformation centered on "hardware and product processing" to a "software and product chain" Centered on technological innovation and transformation. This technological innovation is driving the transformation of Chinese printing companies and their product production from "print quality" to "work efficiency improvement under the premise of high quality", product services from function realization to value-added services, and management from process Control management is shifting to digital asset management to meet society's growing demand for high-quality printing.
As the leader and foundation of the printing product chain, pre-press technology is the first key link in the printing production process from advanced hardware applications to software system upgrades, and it is also the core of planning and solving various problems in printing and post-press processing in advance. From the perspective of demand for high-quality printing, the innovation and expansion of prepress technology is mainly reflected in the following two points.
1. Popularization and high-level application of CTP technology
The prepress technology has achieved the integration of end users, product designers and prepress operators in the digital and network integration of information dissemination means and methods. However, their understanding and expression of printed products, especially high-quality printed products, differ in their understanding and control methods due to different goals and needs, especially for the inconsistency of color images and their color expression, which makes the quality of printing The key element-"color" becomes a kind of "confusion". How to ensure the high fidelity of color, perfect level and clear reproduction of details is the biggest challenge facing the modern printing industry.
CTP technology is a key technology that breaks through the bottleneck of traditional prepress operations to accurately reproduce the bottleneck. It solves the problems of dot loss and nonlinear transfer caused by secondary analog imaging in CTF platemaking, eliminating the lack of personnel experience and numerous equipment parameters in secondary analog imaging The problems of complicated process control, various influencing factors and insufficient reliability of the operation process have made digital, high-precision, high-reliability and simple operation of the printing plate production a reality. The expansion of prepress technology in the field of CTP will focus on the following two points.
(1) In the high-end printing market or product field, CTP technology has entered a stage of mature application and popularization. At present, domestic high-end users have understood and mastered the key elements and control mechanisms of CTP technology application through years of practice, and gradually formed an operation process that meets their own production conditions. They have experienced the quality improvement, operation mode change, and production efficiency improvement brought by CTP. As well as the benefits of digital management methods, the ability to guide and attract users through CTP technology has been initially formed.
(2) In the mid-end printing market or product field, CTP technology has entered a stage of mutual benefit with CTF. Because printing companies in the mid-range market are constrained by capital, market, cost, and technical capabilities, they are currently mainly based on existing CTF equipment, by adding digital proofing and digital imposition components to establish a quasi-CTP for large-format film Process, and after achieving high reliability of large-format film, complete the construction of CTP process with electronic film or CTP output.
2. Professional service and application innovation for prepress operations
The professional service of prepress operations is an important trend in the digital development of information dissemination. It is the application innovation of prepress operations from passive realization of user needs to active creation of user requirements. That is, prepress operations are based on specialization and take initiative to upstream and downstream customers Expand with related fields, gradually integrate with publishing, design, media and other fields to form a new operation and management model of "media preparation", realize the transformation of various information fields from non-professional digital page files to professional digital page files, from satisfying a single static paper The description of qualitative media digital pages has changed to meet the requirements of multiple dynamic digital page descriptions.
The professional service for prepress operations based on the digitization of color information has inherited the high-quality requirements of paper media, and has achieved color correction, gradation correction, background color removal (UCR), achromatic structure (GCR), and sharpness correction (USM ) And other printing-related functions, and has extensive and powerful graphic processing technology, such as color mode conversion, image background synthesis, image derivation and other graphic design and creativity that can change the image content, and can also provide reliable and large Means and methods for the long-term preservation of high-quality graphic and textual information. At the same time, it can also eliminate the difficulties of building a professional prepress system with large capital requirements, high professional quality requirements, and differences in the way in which printers, publishers, and end users recognize product quality.
Prepress professional services can not only assume more responsibility for controlling the entire printing process, so that publishers, designers and customers do not need to have a deeper understanding of the print quality requirements (such as format, accuracy, proofing method), but also can promote prepress operations. Extensive and fast data exchange through the Internet, providing professional-level, diversified and dynamic digital page description services for new areas such as network media and electronic media, making prepress operations truly a kind of information-oriented communication The industry's technical services and creative services that provide professional digital page descriptions have enabled the innovation of high-precision and high-quality prepress operations to be expanded into cross-media media preparation and digital page description professional operation methods. Heidelberg Prinect and Founder Changliu are typical representatives of this type of innovative technology products. [next]
Second, the pre-press technology is oriented towards the innovation and expansion of high-efficiency printing needs
In recent years, "quality determines survival, efficiency determines development, management determines scale, and value-added determines efficiency" has become the principle of continuous development of Chinese printing companies. The focus of competition in the printing industry has been on the theme of "working efficiency under the premise of high quality." Therefore, printing companies are required to adopt a total solution to improve production efficiency, such as improving network and reducing printing preparation time to improve operation efficiency, through various online processing processes to improve product efficiency, by using higher speed or larger specifications of equipment Improve production capacity.
The pre-press technology's innovation and expansion to meet the needs of high-efficiency printing is mainly based on the use of digital new technologies. Through continuous optimization of data and refinement of details, it focuses on the theme of "quality, efficiency, cost, and value-added". "," Management flow "and" value-added flow "are implemented at four levels.
1. The efficiency of pre-press technology for "data stream"
"Data stream" is the foundation of modern printing production, and the innovation of pre-press technology to "data stream" is the key to meet the high efficiency demand of modern printing. At the data flow level, pre-press technology needs to actively revolve around the "modern printing product chain", based on the data flow characteristics of the print data "content expression digitization, expression form colorization, and product structure personalization" to establish the basic elements from the initial printing to the final printing The "data stream" and "data link" of the product form the graphic data link of the printed products and equipment working benchmark data based on advanced digital technology equipment and processes, and optimize the data processing methods and data processing in graphic collection, processing, layout and page description Control means to realize the smooth transmission and conversion of page content description data, various process and management control data, and to improve the efficiency of printing operations by effectively improving the accuracy of page data, reducing job repetition rate and change rate, such as screen screen Huizhi and Kodak Prinergy.
2. The efficiency of prepress technology for "control flow"
"Control flow" is the guarantee of modern printing production, and the innovation of "control flow" by prepress technology is the core to ensure the high efficiency of modern printing. At the level of control flow, prepress technology needs to build a fully digital production process based on CTFCTP, a CIP3CIP4 printing control system, and a control flow feature based on "fine printing management, standardization of production operations, and integration of product production" to break through various new Process and new material applications, quality control points and bottlenecks in the production process, predict and plan the relevant data for printing and post-press compensation in the pre-press link, establish the process control parameters of the printing production system, the parameters of each quality control element and The parameters of each process control point achieve the goals of stable equipment reference, correct data transmission, and simple and easy control, such as Founder Changyi.
3. The efficiency improvement of prepress technology for "management flow"
"Management flow" is the core of modern printing production, and the innovation of "management flow" by prepress technology is the prerequisite for achieving high efficiency of modern printing. At the level of management flow, pre-press technology needs to effectively integrate digital color management platform, digital production platform and ERP production management platform to take advantage of pre-press technology's "preventing risks", according to "integration of production organization, standardization of quality standards, The characteristics of "process control digitization" form a pre-press integration and technology integration method based on the production elements, control elements, management elements and market elements of the product composition and their interrelationships to achieve quality improvement, efficiency optimization and cost reduction, eliminating the production of printed products In particular, time redundancy, cost redundancy and personnel redundancy in prepress operations, such as Heidelberg Prinect.
4. The efficiency of prepress technology for "value-added flow"
"Value-added flow" is the goal of modern printing production. The innovation of "value-added flow" by prepress technology is the basis for expanding the connotation and extension of modern printing. At the value-added stream level, pre-press technology must use innovative concepts and innovative content application methods, according to the scalability of the digital attributes of modern printed product content and the characteristics of "digital content resource utilization, cross-media transmission, and diversified product expression" , Take the content expressed by the printed products as a sustainable application resource, develop and utilize the content resources in an all-round and in-depth way, so that various media forms are closely combined with the superior content resources, and electronic media and network media are merged to form a new The modern content industry of media expression realizes the cross-media communication and application of content through the digitization of content, and provides users with diversified products of high quality, high efficiency, and satisfying their different needs and forms.
Third, the pre-press technology is oriented towards the innovation and expansion of high-reliability printing needs
With the deepening of the digitalization process and the improvement of user needs, the modern printing industry is becoming a high-reliability industry, which puts forward higher reliability requirements for printed products in terms of time, quality, cost, safety, and environmental protection. The former technology solves the uncertainty of the entire printing production process in the pre-press process and improves the reliability of the printing production process and its products. The pre-press technology's innovation and development for high-reliability printing mainly focuses on the following three points.
1. Optimization of the reliability of the digital network connection between the prepress operations and customers
Prepress technology is based on a digital network to build a highly reliable electronic connection between customers of printed products and prepress operations. It is an important symbol of the technical level of modern printing companies, and it is also the basis for printing companies to use innovations in prepress technology to develop innovation with a global perspective. At present, the establishment of this digital network association of prepress technology mainly adopts two methods: one is that the customer design or publishing personnel will all the text, graphics, images, layout and color design and other elements according to the final product requirements for graphic information After processing, all are combined on a layout that meets the printing requirements, and converted into a PostscriptPDF file and sent to the prepress staff. The prepress staff performs content inspection, RIP interpretation and digital proofing confirmation before outputting the printing plate or screen. Separation film, at the same time output the ink preset parameters and post-press processing parameters to the printing and post-press processing workers through the CIP3CIP4 software; the second is that the client ’s publishing or design personnel will transfer the various elements of the above-mentioned final products with their own files To pre-press personnel, the pre-press personnel will process a series of related graphics and texts according to the requirements of publication and printing to form the final digital printed page, and then convert it into a Postscript PDF file, or provide a digital sample sheet for customer inspection and confirmation after RIP interpretation. The confirmed document is finally output to the printing plate or screened film through the output device, and at the same time CIP3CIP4 software over the ink output preset parameters and finishing printing and finishing parameters to the worker.
At present, the digital network association of this prepress technology directly uses the Internet or satellite communication equipment to directly exchange data through long-distance communication; the constantly mature soft proofing technology also makes the communication between related parties more convenient and easy to find errors. , Timely correction; various professional software and digital platforms also make the page content and control information are optimized to the greatest extent, so that the experience of related parties can be shared to the greatest extent, effectively ensuring the realization of higher reliability.
2. Quality and reliability improvement based on color management system
The quality of modern printing products mainly depends on the technical level and control accuracy of the color management system of the printing enterprise. As the key to modern prepress technology, the color management system not only inherits the advantages of traditional color control, but also simplifies the complex color reproduction control by using an all-digital method, in order to obtain the "what you see is what you get" result.
At present, the domestic application of color management systems to improve the reliability of printing quality requires the establishment of stable printing process benchmarks, printing process control systems, digital soft proofing and digital hard proofing and other technical parameters, especially digital soft proofing, digital hard proofing and actual Consistency of printed samples. In addition, it is necessary to resolve the current differences of views and opinions on the purpose of color proofing. It is the accurate reproduction of the artistic image of the original. However, from the perspective of the printing profession, the purpose of color proofing should be to provide the effect of accurate reproduction of the final printed matter, reflecting the requirements for the artistic reproduction of images under certain limited printing conditions.
The color management system uses digital to describe and control the color difference and color gamut, not only can eliminate the color error between the sample and the printed product, maintain the color consistency between the sample and the printed product, but also can use the digital control to perform a variety of printing methods. Matching, enabling pre-press workers to use the same format of graphic data to produce products with different printing methods, and make the products consistent with the proofs in color, level, and clarity, to meet the inspection and correction of each element of the page Requirements, and can maintain extremely high reliability. Representatives of such systems are color management systems such as GMG, EFI, X-Rite.
3. Time and cost reliability improvement based on digital production process
In the market-oriented and personalized development of information dissemination and publishing, how to shorten the time from manuscripts to readers and reduce the cost of printed matter is increasingly important. The digital production process can not only adapt to the production process and method of popular products, but also adapt to the production process and method of on-demand printing users, and can also minimize product costs.
The digital production process and its seamless connection with CIP3CIP4, JDF, and even the e-publishing systems and data systems of upstream content providers have constructed a set of the most effective methods for the detailed control of the various operations of printed products, which can provide users with the smallest number of prints. Can be "1", the largest can be "infinite" diversified production mode, printed materials can also be designed and arranged according to user preferences and personality. The content and marketing of printed products can also be done directly on the Internet. The digital production process adopts a completely digital and clustered control method, which minimizes the influence of the operator's subjective factors, reduces or eliminates the influence of various factors in graphic transmission, plate making, printing and post-press processing, thereby effectively improving Reliability of printing production time and cost.
Prepress technology has moved from an era of single advanced hardware to a software-based era based on advanced hardware. The soft and hard integration of prepress and digital technology is creating a new era for the printing industry to apply advanced digital technology for printed product planning, process design, process and quality control, printing and post-press processing optimization, systematic solution and clustered control. How Chinese printing companies scientifically apply advanced pre-press technology to achieve advanced equipment application optimization, printing process innovation, and management mode transformation has become the key to the construction of the core competitiveness of printing companies. It is also a comprehensive understanding and mastery of new technologies and new technologies for printing companies. The characteristics and laws of technology and new materials are the best way to realize the modern digital integration of resources to lead production and management.
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