Review of the most popular printing reproduction t

Summary of research on printing and reproduction technology (III)

2 computer direct plate making technology

in the traditional plate making process, the production of printing plate should go through two processes: laser phototypesetting output film and manual assembly and printing. With the maturity and application of the technology of direct plate making by computer, CTP technology is becoming more and more mature. Since autoligic developed the first computer direct plate making equipment in 1989, major companies in the world have worked closely with printing manufacturers to accelerate the development of this technology research and gradually reach the level of maturity and industrial application. At drupa95 printing exhibition, CTP system and direct plate making materials became the hottest technical highlights at the meeting, which shows that the research of computer direct plate making technology has matured and entered the market

the Department of physics of Peking University began to study CTP plate making machine in 1983. In 1985, the Ministry of electronic industry included it in the key research project of the Seventh Five Year Plan. In December 1995, CTP system passed the product finalization appraisal presided over by the Ministry of electronic industry

at the same time, many research results have also appeared in the research of CTP plates. In the early 1980s, Mitsubishi paper company of Japan successfully developed the silver master CTP plate. Then, until 1991, DuPont launched the world's first commercial silver salt aluminum based CTP plate. In 1997, China's Shanghai Institute of printing technology, commissioned by the State Planning Commission and the publication administration, began to study "high sensitivity non silver photosensitive plates for non silver laser direct plate making". In addition, Beijing Normal University and the second film factory have also carried out research on relevant plates and achieved gratifying results

the popularity of CTP application has doubled every year. The computer direct plate making system has once again promoted the progress of electronic typesetting technology. Faced with this new technology, people of insight in China's printing industry have paid close attention to it. Since 1997, the China Institute of Printing Science and technology has held seminars on direct plate making technology for many times, and organized foreign businessmen to comprehensively and systematically display various types of direct plate making equipment for the first time at the Beijing International Electronic Publishing and multimedia exhibition in 1998, which has played a positive role in promoting the promotion and application of direct plate making technology in China. Yangcheng Evening News introduced the direct plate making system in May, 1998, becoming the first newspaper in China to adopt the direct plate making technology

subsequently, Heidelberg and pressek jointly developed the computer to plate on press technology, and launched gto-di in 1991, becoming the world's first plate making device on a printing machine. The so-called in machine direct plate making and printing technology refers to the technology that directly outputs the graphic information of the printed page from the computer to the printing plate installed on the printing machine to complete plate making and printing at one time

in 1995, Heidelberg launched a four-color offset press with quickmaster Di direct imaging at drupa95 exhibition. In machine direct plate making and printing technology has been applied by users in China without modification. It is mainly used for printing color short plates, and the plates are special waterless offset plates

3 digital printing technology

in the 1990s, due to the application of high and new technologies such as computer, automatic control and laser in the printing industry, digital printing machine was born. It is a highly comprehensive technology, covering printing, electronics, computers, networks, communications and other technical fields. In 1994, Xeikon, indigo and Agfa (as Xeikon's original equipment suppliers) set off a trend of developing and launching full digital, four-color, on-demand high-speed printing machines. Since then, Scitex's spontan, IBM's info cloor, Xerox's docu color and other companies' products have joined the ranks of digital printing

in 1999, indigo and Xeikon first launched a color digital printing machine at the IPEX '93 international printing exhibition, which attracted great attention from the printing and publishing industry. Indigo's blanket and electronic ink can achieve 100% ink transfer. At drupa95 International Printing Technology Expo, digital printing machine is recognized as the first star product, and its application is called another revolution of printing technology

up to now, the digital printing machine products developed by ourselves include: csp320d sheet fed digital printing machine of Xeikon company, e-print1000+ series digital printing machine of indigo company, DICOweb web web digital printing machine of MAN Roland company, nexpress2100 color digital printing machine of Heidelberg company, etc

the so-called digital printing refers to the direct transmission of electronic files from the computer to the printing machine, thus eliminating the steps of color separation, plate making, plate making, testing and so on. It brings printing into a most effective process: from input to output, the whole process can be controlled by one person to realize one piece of printing. Such small volume printing is very suitable for four-color proofing and multi variety printing at reasonable prices, and will also be popular in the book printing market. Digital printing realizes the concept of "distribution before printing"

digital printing system is mainly composed of prepress system and digital printing machine. Some systems are also equipped with binding and cutting equipment. Digital printing has the following characteristics: 1) the printing method is fully digital. Digital printing is a full digital process from computer to printed matter. There is no need for film and printing plate in the middle of the process, and there is no cumbersome process of traditional printing process; 2) Variable information printing. The content of digital printed matter can change at any time, that is, the content of the front and back pages can be completely different; 3) It can realize remote printing and long-distance printing through interconnection. Because digital printing has these characteristics, it has its unique advantages in the personalized on-demand printing market

there is no doubt that the development of high-speed on-demand color printing technology will bring permanent changes to the entire printing industry, but it is still controversial what changes will happen. Andrew paparozzi of the National Printing Association and the offset Economic Research Center said, "sometimes it is a supplement to traditional printing, and sometimes it is a strong competitor to traditional offset printing."

as Valenta of MAN Roland said, "the future digital offset printing machine should be able to use and have the operating performance of various offset printing machines at present, which is what customers need. Some people also call recyclable paper bags as environmental protection bags". However, the new technological reform cannot be carried out in a vacuum, and it must involve many problems in many aspects, taking into account the needs of the market. " A recent research report shows that by 2005, offset printing will account for about 80% of the market share in publishing and printing. Other media (including Internet) will also affect the dynamic changes of the market

in any case, offset printing will still be a very active process in the next 10 years. Surch insisted that "a paperless society will not exist at all. Science and technology are also changing the traditional offset press and offset technology, but the premise of printing ink on the substrate material will not change."

4 cross media publishing

with the progress and changes of technology, the term "pre press" has been accepted to replace "plate making". In recent years, "pre media" has appeared, tentatively translated as "cross media pre-processing". It refers to that in addition to traditional media, there are other optical, electrical, magnetic multimedia and interconnection. With the digital processing technology of image information, it can not only serve the publishing of traditional media, but also other new media, that is, "pre-processing" for cross media production

since the first exhibition of CD-ROM publications at the Frankfurt Book Fair in October 1985, as a transitional medium to online publishing, CD-ROM has played an important role in the field of electronic publishing. Computer CD-ROM publishing is especially suitable for reference books, dictionaries, statistical materials and educational books and journals that need retrieval. At present, there are universal software for processing words, pictures, sounds and images to support the production of electronic publications

with the development of network technology, the advantages of wide network coverage and strong real-time information dissemination have attracted great attention of newspapers and publishers. The cross media publishing of newspapers and publishing houses in China has resulted in CISA submitting an article "ldquo" to the national development and Reform Commission for the first time; Seek coal rdquo; Started. Since the first newspaper of China trade news appeared on October 20th, 1995, almost all major newspapers have been published. The main technical problem of publishing on is how to solve the difference between the format of printing and publishing data and that of online publishing data. Because we set XML as the normalized data standard of the manuscript of the collection and editing process system, implanted the XML data into the layout through the software plug-in of the typesetting software to realize the interface from XML data to printing, and then converted the XML data into HTML through the self-developed electronic newspaper system, so as to realize the data distribution, and placed the sample in the two fixtures of the experimental machine. At present, more than 30 major newspapers in China have adopted this cross media publishing solution. Under the influence of e-book technology, Chinese publishing houses have also begun to plan to publish their contents on the Internet in the form of E-book in the past two years

in a word, cross media publishing has expanded the connotation of printing reproduction technology research, and it is a new research direction worthy of attention