Newspaper Publishing and Printing Technology Problems and Applications (2)
2019-03-22 09:30:18
With the development of domestic journalism and the continuous emergence of new technologies in the world, combined with the status quo of China's newspaper printing industry, the next period, which is roughly in the pre-2010 period, may lead to the reorganization of newspaper publishing and printing technology. Pipeline, reform and improve the three links "in the direction of development.
The so-called “opening up of a production line†refers to the publication of newspapers from text entry to the arrival of newspapers and the establishment of a digital stream management. At present, the newspaper's text entry, layout grouping, image processing, color report color separation, full-page output, and layout transmission have all been digitized. However, efforts should be made to solve the problem of inconsistency in the system, gradually realize standardization, and be in line with international standards. The digital stream extending forward is to establish and improve the news editing and editing system, and realize the digitization of news submissions and images. In this respect, there have been more mature technologies and some good typical units have emerged, mainly the promotion and application and organizational management issues. The backward extension of the digital stream is to gradually expand to the three stages of plate making, printing and distribution. In light of the current actual situation, the task of reforming these three links is quite arduous and can only be solved gradually.
Actively and steadily promoting direct plate-making technology (ie, CTP) and reforming plate-making techniques are an important part of shortening publication time and improving the quality of newspapers. The basic requirements for newspaper publication are always in the direction of making newspapers appear in the shortest possible time and printing better newspapers. In all aspects of newspaper publishing, improving the speed of each link, such as text entry, group printing, image scanning, plate making, printing, etc., is the main way to shorten the time, and cutting off one link will be more effective. Direct plate making can shorten the process flow and increase platemaking efficiency.
According to the current plate-making process, due to the different plate-making equipment of each newspaper, generally the first edition takes 15 to 20 minutes. If it is continuously operated, each edition will take about 10 minutes. (Individuals with high-grade continuous drying equipment also need to have The time required for photocomposition and punching time is a minimum of seven or eight minutes.) The key is the time and quality of color plate making. If there is no automatic imposition equipment, artificial imposition, it takes about 30 minutes to produce a color version, and artificial imposition is affected by the light and the line of sight. It cannot be very accurate.
A black-and-white PS plate is produced using a direct plate making process. The first sheet is about 3 minutes, and it takes about 1 minute in succession. The first sheet is about 5 minutes in color, and it lasts about 2 to 2.5 minutes. The most important is the registration of 4 different color versions. It is automatically controlled by a computer and has no artificial error. Its repeatability can reach ±0.005 mm. Therefore, it is an advancement for the plate making process to go to the CTP, which is to advance the digital flow of the entire publishing process. At present, two newspaper companies in China have introduced this technology, confirming its feasibility and superiority.
Direct platemaking is a new technology that has emerged in the international community in the past three to four years. It has developed rapidly in Europe. Its advantages lie not only in fast plate making and good quality, but also in CTP-specific plates, which can withstand up to 500,000 impressions. The CTP system equipped with lithographic printing equipment is environment-friendly. It uses recycled water (four-fifths of water-saving) to recover the residual silver from the silver salt CTP plate. The discharge water is not contaminated, so the promotion is faster. The United States did not use too much newspapers before 1998. This year, the speed has accelerated. Many major newspapers have started using CTP technology.
China also attaches great importance to the development of CTP technology and has listed the development and development of CTP platesetters and special plates as high-tech projects. The State Economic and Trade Commission and the State Development Planning Commission have successively implemented projects. The domestic development of these two projects has certain difficulties, and it will take a certain period of time. In particular, CTP machines may adopt imported technologies or domestic assembly (OEM) methods. In short, this matter has been put on the agenda.
Since the CTP equipment and plates need to be imported in the past two years, there are many foreign manufacturers and brands, the machine structure and the plates used are different, and the equipment investment is higher than the traditional plate-making equipment. The Chinese newspaper industry adopts a more cautious attitude. The development process is inevitably preceded by a small number of units launched, run for a period of time, and analyze and summarize their effects before they can be gradually promoted. The first to be on the CTP will be the Evening News, the new printing factory or the printing center, and the print version of the newspaper with many newspapers at night, especially the multi-color newspaper, and may adopt two-legged walk method. General living, time permitting will continue to use the traditional plate-making process.
Regarding equipment selection, no matter which brand is adopted, including the domestically-made direct plate-making machine in the future, the newspaper printing industry has obtained the following preliminary consensus: 1 The plate-making speed, the black and white version is not less than 1 minute, and the color version is the longest one. Not more than 25 minutes; 2 resolution, not only can adapt to the requirements of newsprint paper 1270dP i, but also can meet the requirements of coated paper printing not less than 2540dP i; 3 color version overprint accuracy is not more than 0005mm; 5 machine and its parts, In particular, the durability of the light source is adjusted to a fair and reasonable price; 5 service guarantee.
With regard to CTP plates, there are photopolymerization plates, silver salt plates, silver salt diffusion plates, and thermal plates. We tend to use aluminum salt diffusion plates. Photopolymerization is more difficult to achieve domestically, and the quality of the thermal plate may be better, but the plate making time is long and it is not suitable for newspapers. The print resistance requirements of the version are not less than 500,000 prints.
Enhancing and improving printing capabilities is an urgent task at present. It is expected that the types of newspapers will not grow in the future, or even decrease. However, newspaper expansion is an inevitable trend. Newspaper printing volume will increase year by year. It is estimated that the total number of newspapers printed in 2010 will exceed 120 billion pairs, and the number of newly added printing presses will not be less than 100 printing units. The new printing press not only requires the ability to print color newspapers, but also has a flexible structure that can print double-sided colors. In some major cities, newspaper printing will require the addition of commercial printing presses capable of printing copperplate paperbacks.
The maintenance, renovation and renewal of existing printing presses are an important task in tapping the potential of existing printing. The so-called transformation is to add a BB unit to the existing semi-satellite unit, or to add a Y-type unit to the Y-unit to increase the ability of printing color newspapers. Of the existing 1100 printing press offsets, at least 25% will need to be updated by 2010.
Gradually solve the problem of automatic paper and computer counting, packaging, and automatic delivery. For a long time, the paper on the rotary press has been pushed by people. In recent years, some automatic and semi-automatic paper conveying lines have been gradually put on the market. Most of them do it by themselves. They are lower in price than imports, and they have indeed improved efficiency and reduced manual labor. The effect of strength is expected to continue this trend. As for the automation of dispatching, it is also an important part of the newspaper as soon as it arrives in the hands of the reader. Now, Guangzhou Daily has established a delivery line. In the past two years, the post office system has arranged to set up an automatic delivery system in newspaper printing plants in some large cities. It is expected that the issue of manual delivery will be very large in 2010. Change.
Newspaper printing technology has undergone technological transformation for nearly 10 years, which has significantly supported and guaranteed the development of newspaper publishing. In the next 10 years, there will be further development in newspaper publishing, and the transformation of printing technology will enter a new stage.
Source: Huaxia Paper Forum
The so-called “opening up of a production line†refers to the publication of newspapers from text entry to the arrival of newspapers and the establishment of a digital stream management. At present, the newspaper's text entry, layout grouping, image processing, color report color separation, full-page output, and layout transmission have all been digitized. However, efforts should be made to solve the problem of inconsistency in the system, gradually realize standardization, and be in line with international standards. The digital stream extending forward is to establish and improve the news editing and editing system, and realize the digitization of news submissions and images. In this respect, there have been more mature technologies and some good typical units have emerged, mainly the promotion and application and organizational management issues. The backward extension of the digital stream is to gradually expand to the three stages of plate making, printing and distribution. In light of the current actual situation, the task of reforming these three links is quite arduous and can only be solved gradually.
Actively and steadily promoting direct plate-making technology (ie, CTP) and reforming plate-making techniques are an important part of shortening publication time and improving the quality of newspapers. The basic requirements for newspaper publication are always in the direction of making newspapers appear in the shortest possible time and printing better newspapers. In all aspects of newspaper publishing, improving the speed of each link, such as text entry, group printing, image scanning, plate making, printing, etc., is the main way to shorten the time, and cutting off one link will be more effective. Direct plate making can shorten the process flow and increase platemaking efficiency.
According to the current plate-making process, due to the different plate-making equipment of each newspaper, generally the first edition takes 15 to 20 minutes. If it is continuously operated, each edition will take about 10 minutes. (Individuals with high-grade continuous drying equipment also need to have The time required for photocomposition and punching time is a minimum of seven or eight minutes.) The key is the time and quality of color plate making. If there is no automatic imposition equipment, artificial imposition, it takes about 30 minutes to produce a color version, and artificial imposition is affected by the light and the line of sight. It cannot be very accurate.
A black-and-white PS plate is produced using a direct plate making process. The first sheet is about 3 minutes, and it takes about 1 minute in succession. The first sheet is about 5 minutes in color, and it lasts about 2 to 2.5 minutes. The most important is the registration of 4 different color versions. It is automatically controlled by a computer and has no artificial error. Its repeatability can reach ±0.005 mm. Therefore, it is an advancement for the plate making process to go to the CTP, which is to advance the digital flow of the entire publishing process. At present, two newspaper companies in China have introduced this technology, confirming its feasibility and superiority.
Direct platemaking is a new technology that has emerged in the international community in the past three to four years. It has developed rapidly in Europe. Its advantages lie not only in fast plate making and good quality, but also in CTP-specific plates, which can withstand up to 500,000 impressions. The CTP system equipped with lithographic printing equipment is environment-friendly. It uses recycled water (four-fifths of water-saving) to recover the residual silver from the silver salt CTP plate. The discharge water is not contaminated, so the promotion is faster. The United States did not use too much newspapers before 1998. This year, the speed has accelerated. Many major newspapers have started using CTP technology.
China also attaches great importance to the development of CTP technology and has listed the development and development of CTP platesetters and special plates as high-tech projects. The State Economic and Trade Commission and the State Development Planning Commission have successively implemented projects. The domestic development of these two projects has certain difficulties, and it will take a certain period of time. In particular, CTP machines may adopt imported technologies or domestic assembly (OEM) methods. In short, this matter has been put on the agenda.
Since the CTP equipment and plates need to be imported in the past two years, there are many foreign manufacturers and brands, the machine structure and the plates used are different, and the equipment investment is higher than the traditional plate-making equipment. The Chinese newspaper industry adopts a more cautious attitude. The development process is inevitably preceded by a small number of units launched, run for a period of time, and analyze and summarize their effects before they can be gradually promoted. The first to be on the CTP will be the Evening News, the new printing factory or the printing center, and the print version of the newspaper with many newspapers at night, especially the multi-color newspaper, and may adopt two-legged walk method. General living, time permitting will continue to use the traditional plate-making process.
Regarding equipment selection, no matter which brand is adopted, including the domestically-made direct plate-making machine in the future, the newspaper printing industry has obtained the following preliminary consensus: 1 The plate-making speed, the black and white version is not less than 1 minute, and the color version is the longest one. Not more than 25 minutes; 2 resolution, not only can adapt to the requirements of newsprint paper 1270dP i, but also can meet the requirements of coated paper printing not less than 2540dP i; 3 color version overprint accuracy is not more than 0005mm; 5 machine and its parts, In particular, the durability of the light source is adjusted to a fair and reasonable price; 5 service guarantee.
With regard to CTP plates, there are photopolymerization plates, silver salt plates, silver salt diffusion plates, and thermal plates. We tend to use aluminum salt diffusion plates. Photopolymerization is more difficult to achieve domestically, and the quality of the thermal plate may be better, but the plate making time is long and it is not suitable for newspapers. The print resistance requirements of the version are not less than 500,000 prints.
Enhancing and improving printing capabilities is an urgent task at present. It is expected that the types of newspapers will not grow in the future, or even decrease. However, newspaper expansion is an inevitable trend. Newspaper printing volume will increase year by year. It is estimated that the total number of newspapers printed in 2010 will exceed 120 billion pairs, and the number of newly added printing presses will not be less than 100 printing units. The new printing press not only requires the ability to print color newspapers, but also has a flexible structure that can print double-sided colors. In some major cities, newspaper printing will require the addition of commercial printing presses capable of printing copperplate paperbacks.
The maintenance, renovation and renewal of existing printing presses are an important task in tapping the potential of existing printing. The so-called transformation is to add a BB unit to the existing semi-satellite unit, or to add a Y-type unit to the Y-unit to increase the ability of printing color newspapers. Of the existing 1100 printing press offsets, at least 25% will need to be updated by 2010.
Gradually solve the problem of automatic paper and computer counting, packaging, and automatic delivery. For a long time, the paper on the rotary press has been pushed by people. In recent years, some automatic and semi-automatic paper conveying lines have been gradually put on the market. Most of them do it by themselves. They are lower in price than imports, and they have indeed improved efficiency and reduced manual labor. The effect of strength is expected to continue this trend. As for the automation of dispatching, it is also an important part of the newspaper as soon as it arrives in the hands of the reader. Now, Guangzhou Daily has established a delivery line. In the past two years, the post office system has arranged to set up an automatic delivery system in newspaper printing plants in some large cities. It is expected that the issue of manual delivery will be very large in 2010. Change.
Newspaper printing technology has undergone technological transformation for nearly 10 years, which has significantly supported and guaranteed the development of newspaper publishing. In the next 10 years, there will be further development in newspaper publishing, and the transformation of printing technology will enter a new stage.
Source: Huaxia Paper Forum
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