PS plate manufacturing industry in the most popula

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PS plate manufacturing industry in the process of digitalization

China's printing industry has made great achievements under the guidance of the 16 character policy. Since 1982, in just 18 years, the revolution of lead and fire has been completed, and Laser Phototypesetting has been completely popularized. The equipment of a number of new printing plants in China is almost the same as that in developed countries. At the same time, it has also created a large number of excellent printing equipment manufacturing enterprise groups in China, such as Beida founder, erjiao, beiren, etc., which is really changing from the old to the new. Offset printing is an important part of the 16 character policy. From the early 1990s, offset printing has basically replaced lead printing. The rapid development of offset printing has cultivated and expanded China's PS plate manufacturing industry, making it develop by leaps and bounds in the 1990s. According to statistics, in the 17 years from 1982 to 1999, China's PS plate manufacturing industry increased at an average annual rate of 18%. In 2000, the total output of PS version in China has reached more than 45million square meters, equivalent to 1/8 ~ 1/10 of the total output of PS version in the world that year

the author believes that the domestic growth rate is closely related to the world PS edition industry. The annual average growth rate of the world PS edition is 16%. In 1999, the total output value of the world PS edition reached 32billion US dollars

by 2000, China has formed a domestic professional PS plate manufacturer led by the second film factory of China Lucky Group and the China Institute of Printing Science and technology. The PS plate output of the second glue has reached about 1/4 to 1/3 of the total PS plate output of the country

since 1998, great changes have taken place in the varieties of PS edition in the world. Take Polaroid for example, its annual output reached 18million square meters. In that year, its traditional PS version was only equivalent to 80% of its total output, while the other 20% of its output was thermal version. It is reported that the output of its thermal version is equivalent to 5% of the consumption in the United States. This change is related to the acceleration of digitalization in the printing industry. In the 1990s, desktop color publishing system has made great progress in developed countries. In 1995, at the beginning of the popularization of CTP Technology (computer to plate), due to the immaturity of the supporting laser source technology, infrared, visible laser, thermal and ultraviolet CTP plates coexisted. Even so, CTP technology still occupies an increasing market share in the field of PS version with its strong advantages, such as concentrated exposure energy, automatic control by computer, very accurate exposure positioning, etc. Up to the drupa exhibition, the largest printing exhibition in the world in 2000, 3500 CTP systems have been running all over the world. In developed countries, the output of CTP plate has accounted for about 1/3 of the total PS plate output

ctp technology is the inevitable process of digitalization of printing industry. With the development of computer and laser technology, the traditional laser Imagesetter can be improved into CTP to realize the direct transfer from computer to printing plate without intermediate film. The key here is the laser light source and the minimum photosensitive energy required by the PS version. Since 1995, the laser technology has made great progress. The CTP system produced abroad can carry different types of laser light sources according to the needs, so as to meet the needs of users. For example, Agfa, Japan and Barco have launched a variety of mounted light sources suitable for different plates. For laser source, stability, reliability, easy system integration, long service life and improving laser energy are the most important. In 2000, a new UV laser light source appeared on the market, which was successfully developed by a Japanese company. It is reported that the service life of the laser light source has reached thousands of hours, and the technology is mature. Once this light source was introduced in 2000, it has achieved great effect. It is understood that almost all foreign CTP manufacturers have carried this light source on their own equipment. Improving the sensitivity of PS version has become the key to the development of PS version. At present, the imaging exposure of CTP plates in the market is mostly below 100mJ/cm2, and there have been many μ J avoid loss/cm2 magnesium alloy is the most potential metal material level high sensitivity CTP plate in the automotive industry. Generally, the imaging exposure of traditional PS plate in China is more than 300MJ/cm2

compared with developed countries, China's PS version has a large gap in performance and varieties. In 2000, more than 98% of the total output of PS version in China was traditional PS version (about 70's level product). Although the annual consumption of CTP plates has reached more than 5million square meters due to the technological progress of the newspaper industry, due to the lack of corresponding power and mechanism for the development of new products in China, it is unable to manufacture plates suitable for foreign CTP, and this market is basically lost. From the perspective of traditional PS version, in order to meet the needs of high-quality printing, foreign PS version is developing towards high-performance, mainly in three aspects: high resolution. Due to the rapid development of computer technology, 1500 Wires/inch can be made, usually 175 Wires/inch in China. The purpose of improving high precision machining is to improve the resolution, reduce moire phenomenon, and improve saturation. During the operation of anchor fatigue testing machine, 1 must pay attention to whether the parts are loose and clear. At present, the mainstream of high-precision printing abroad is 400 lines/inch, which requires higher particle size and resolution of photosensitive materials; High printing resistance. For the newspaper industry, the number of prints of one edition is often as high as 200000, or even more than 500000. At present, the general printing resistance in China is less than 100000; The direction of high sensitivity will promote the transformation from traditional PS plate to CTP plate. Especially with the emergence of CTCP technology, the traditional PS version can be used for CTP output, which is undoubtedly a blessing for the traditional PS version. By 2000, in terms of production capacity, China has entered the world's largest producer of PS version, with an annual output of more than 1/10 of the world's total output and an output value of 1.5 billion yuan. A number of domestic PS version production bases have been initially formed, basically meeting the needs of the domestic market. However, we must clearly see that China's accession to the WTO in 2001 is a foregone conclusion. PS plate manufacturers all over the world are optimistic about China's big market. At present, various domestic protection policies have been formulated. It is impossible to protect the existing PS plate market without measuring the friction coefficient of film materials at room temperature before printing. If China's PS plate manufacturing industry wants to maintain the existing domestic market, it can only improve its own quality. The first is to change the miniaturization of production. At present, the largest PS version production base in China is Henan erjiao, with an annual production capacity of more than 10million square meters. However, compared with developed countries, there are still many gaps in its scale and management level, especially in its production technology. With the addition of Xingguang and Juguang, the annual output of the three domestic PS version manufacturers has reached 50% of the total domestic output, accounting for half of the country. The inevitable result of miniaturization is decentralization. The domestic output of 45million square meters is jointly completed by about 30 large and small enterprises, and the average annual production capacity is mostly below 1.2 million square meters. From the perspective of operation, most enterprises can not reach the scale effect, and there is almost no profit space for their own development, resulting in a vicious circle of backward technology, backward equipment and too small scale. From the perspective of environmental protection, China has ordered all enterprises harmful to the environment to cancel or transfer, and imposed strict restrictions on the environmental pollution in their production and use. Due to the backward technology, on the one hand, the environmental pollution in the production process can not be improved as soon as possible, and the pollution in the use process of products can not be controlled. The State Economic and Trade Commission has noticed this problem and is revising the statistical content of traditional GDP (gross national product). Blindly pursuing economic growth and ignoring the environment is a problem that has occurred in many countries in the past, and its cost is too high. When the environment is cleaned up after pollution, the costs paid by that time have far exceeded the benefits

in the next five years, the digital development direction of the international printing industry is a foregone conclusion. China must speed up the digital process of PS plate manufacturing industry. Relevant experts in the printing industry pointed out that since the 1990s, the world printing industry has basically stepped up every five years: in the early 1990s, the desktop publishing system was the most eye-catching, and the color desktop system was soon launched; In 1995, digital printing and CTP (computer to plate) technology appeared; By the year 2000, the digital workflow and cross media technology of printing integration will be launched at the largest international exhibition of the world's printing industry. In short, digitalization and its further development have become the inevitable direction of the future development of the printing industry. We believe that China's PS plate manufacturing industry, which has grown up in the market economy, will meet the challenge, continue to grow, accelerate the digitization process, and become an excellent industry in China's printing industry that can compete with foreign developed countries

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