Advantages of CTP technology in book printing

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Advantages of CTP technology in book printing

advantages of CTP technology in book printing

CTP technology can well combine digital printing technology with traditional offset printing technology, and play a complementary role. It has the following advantages in book printing

1. Save printing time

ctp technology simplifies the process flow such as printing, reduces the pre press preparation time and labor required, thus saving the time required for book printing. According to the statistics of the prepress Department of Xi'an Coal navigation map making and printing company, taking a set of folio four-color version as the benchmark, the time and manpower saved after using CTP technology are quite obvious, as shown in Table 1. Many printing enterprises that have introduced CTP technology also agree with this

nowadays, publishers have higher and higher requirements for the printing cycle of books. The printing time of many books has reached the limit of the traditional printing cycle, so CTP technology will be an effective choice to shorten the printing cycle of books

2. Improve printing quality

ctp technology uses special processing technology and high fidelity printing, and eliminates the traditional plate making methods of outputting film and manual plate making, plate printing, development and other processes, reduces the error of human operation, and can achieve extremely high accuracy. CTP system can minimize the variable factors in the plate making process, reduce the point loss and attenuation of the output plate points, overcome the disadvantages of traditional printing, such as more dirty points, and restore the levels of highlights and dark details in the plate. Prepress and printing processes are closely combined to ensure the improvement of printing quality. In addition, in traditional plate making, the book film will be aged if it is used too many times or stored too long, which will affect the reprint effect. Books printed with CTP technology, whether monochrome or four-color, are stored in CD-ROM in the form of electronic files. No matter how long it takes and how many times it is printed, the printing quality will not change

3. Reduce printing costs

ctp technology directly uses computer plate making and printing of processed books, and there is no need to output film. The publishing house saves the cost of outputting film and reduces the printing cost. Taking a 32 folio book with 10 prints as an example, if each film is calculated at 1.50 yuan, the film production fee can be saved by 480 yuan. If it is a four-color book, 16000 yuan can be saved by calculating the proofing fee of 50 yuan per side. CTP technology is still in the promotion stage in China, and the further popularization of this technology is hindered by factors such as excessive equipment investment, high requirements for personnel, and expensive plate materials. Even enterprises that have introduced this technology have not seen a significant decline in printing costs. It is understood that after using CTP, the number of plate making personnel can be reduced from the original 20 to about 5, which saves printing time and reduces labor costs for enterprises. In addition, owning CTP also increases the strength and competitive advantage of enterprises. In fact, some well run printing enterprises have gradually digested the factors that lead to the rise of printing costs due to equipment and plates through the shortening of time, the reduction of personnel and the continuous expansion of printing scale. Even if the purpose of reducing costs cannot be achieved temporarily, time and quality will be won, which is also a very meaningful thing for publishing houses

4. Improving management level

ctp technology not only involves technological innovation, but also brings digital management concept. Between CTP equipment and supporting processes, enterprises are required to carry out digital management of the printing process. At the same time, publishing house typesetting and printing personnel must adapt to this kind of digital management requirements and match CTP equipment

5. Conducive to environmental protection

ctp technology does not need to output film, omits printing and other process links, and can avoid or reduce the use and discharge of a large number of chemical solutions. Although some CTP plates still need chemical treatment, post-treatment free printing plates have been gradually used. With the gradual development and improvement of CTP technology, the pollution brought by printing to the environment will be gradually reduced, and green printing will be truly realized

practical application of CTP technology in book printing

in the past, the understanding of CTP technology was limited to the introduction of various media, and it was never actually used. By chance, our agency tried to print several books with CTP technology. Among them, the medical business headquarters of gold wire and Telecommunications (Suzhou) Co., Ltd. (hereinafter referred to as "Gold Medical") from Suzhou has been practically applied. Our leaders and relevant departments have personally realized the many benefits brought by CTP technology to book printing, and have seen the time benefits, quality benefits, cost benefits and management benefits created by CTP technology

1. The printing of "the compilation of the history of the Qing Dynasty sets a high industry standard year" (1 ~ 12 volumes)

the compilation of the history of the Qing Dynasty "is a set of academic monographs successively published by our society since 1992, with a total of 12 volumes and 275 printed sheets. The 3000 sets first printed had been sold out by 2004, so it was decided to reprint and package this set of books and publish 5000 sets of hardcover edition, which was required to be published before the 2004 Guilin book order meeting. When receiving the reprint notice, it was only ten days before the date of the order meeting. The publishing department soon sent 12 sets of films to Henan No.1 Xinhua printing plant for reprint. When the other party received the film for printing, he found that the film was yellow, and some films had been aged and could not be used. Even if it is reluctantly used, it will greatly affect the printing quality. If the film is released again, it will prolong the publishing time on the one hand, and on the other hand, the cost of repeated film production and plate making will also be high. Just when the publishing department was in a dilemma, the salesman of Henan No.1 Xinhua printing factory introduced the CTP equipment of the factory to us, which can shorten the printing cycle. Fortunately, the electronic files of this set of books were still intact, so the electronic files of this set of books were sent to the printing factory through the Internet. Considering that there may be problems such as moving edition in the process of software conversion, the manufacturer proofed again after making a large edition through the CTP system, printed after being reviewed and signed, and finally sent a set of beautifully printed and bound books to the president before the order meeting. Compared with the first edition of books, reprinted books not only have better printing effect, but also save about 14000 yuan of film costs

2. The printing of the complete works of world art

the complete works of world art has 20 volumes, 469.25 printed sheets, and the whole book is printed in four colors. In order to ensure the printing quality and reduce the cost of plate making in the early stage, our news agency decided not to export films and carry out traditional proofing, and directly used CTP technology for plate making and printing in Henan first Xinhua printing plant. When the electronic documents of the set of books are sent to the printing plant, the technicians of the printing plant will rip again. Before starting printing, the printing staff of the publishing house went down to the factory in person and printed on the machine after approving the proofing content and color. As the first set of world art history written by the Chinese themselves, this set of books has been highly praised by all sectors of society for its wonderful content and exquisite printing. At the same time, thanks to the CTP technology, 200000 yuan of output film and proofing costs are saved. It is precisely because of the decline in printing costs that the book adopted the strategy of low pricing, which improved the market competitiveness of the book

up to now, our society has printed more than 350 thousand books of 60 kinds with CTP technology, and its quality, time and cost advantages are deeply recognized by our leaders. If conditions permit, in the future, our color books and key books will be printed with CTP technology, and gradually transition to two-color books and monochrome books. At the same time, it is also suggested that the designated printing plants cooperating with CCS should introduce and use CTP technology when conditions are ripe

current situation and existing problems of CTP technology

it has been about 8 years since the first CTP equipment was introduced into mainland China in 1996. As of September 2004, the number of CTP equipment has reached 312 sets (according to the survey and statistics of printing managers). The annual growth rate alone seems to be considerable, but 312 sets are too low compared with more than 90000 printing enterprises across the country. Moreover, printing enterprises with CTP equipment have the problems of unbalanced geographical distribution, unbalanced development within the industry and low utilization rate of CTP plate making. What is the reason for the unsatisfactory promotion and popularization of this new technology with great development potential in China? To sum up, it mainly includes the following aspects

1. Large equipment investment and high plate price

it is understood that a set of CTP equipment requires an investment of about 1.5 million to 2 million yuan. Such a large investment is equivalent to the price of 2-3 traditional offset presses, which is difficult for most small and medium-sized printing enterprises. Moreover, the high investment is difficult to be repaid in a short time, which makes many manufacturers dare not purchase rashly. In addition, the high price of CTP plates has also become a major obstacle to the popularization of CTP technology. Ordinary PS plate is about 35 yuan per square meter, while imported CTP plate is as high as 100 yuan per square meter, and domestic CTP plate is also about 50 yuan per square meter. As the largest consumption of consumables in the printing industry - printing plates, their high prices will directly affect the confidence of enterprises in CTP

2. Lack of digital processes, high requirements for professionals

a considerable number of small and medium-sized printing enterprises have a relatively low level of modern management, and there is a serious shortage of enterprise professionals. This situation has also hindered the promotion of CTP in small and medium-sized printing enterprises. CTP equipment needs a certain technical background, which is the update of printing process. CTP technology is closely combined with modern technology. Before introducing CTP equipment, printing enterprises must improve the modern management level and cultivate a group of professional talents with high professional quality and digital work experience. First, prepress operators must have desktop system work experience; Second, we must have strict knowledge of product quality control and color management; Third, the digital workflow used must be a universal digital interface with strong compatibility, which can effectively explain the data flow generated by any front-end software

3. Insufficient publicity and promotion, weak customer demand

customer demand is an important factor for enterprises to introduce and use CTP. Customer demand is the main purchase motivation of CTP equipment enterprises. In a market economy, demand creates the market, and weak demand naturally leads to market weakness. The main reason is that the journey of this service is hard, and the promotion of technology is not enough. It is understood that many publishers do not know much about CTP technology, let alone use it. This situation must have affected the decision-making of printing enterprises to a certain extent. According to the survey of Beijing Hualian Printing Co., Ltd., many publishing houses basically do not use CTP technology when they do not understand it. Once they understand or use this technology, they have a special interest in it. In addition, because a large number of foreign customers are very familiar with this technology, almost all books are printed with CTP technology, 10000 edible sports drink bags

4. There are many kinds of equipment, and the performance and quality are unstable

at present, there are many kinds of CTP equipment. In terms of brands, there are nearly 20 suppliers such as Cleo, Agfa, Heidelberg, etc; In terms of imaging methods, including thermal sensitivity, photosensitivity and CTCP; From the structure of plate making machine, there are inner drum type, outer drum type, platform type, etc. It is still difficult to draw a conclusion on which device represents the development direction of CTP technology. In addition, CTP equipment generally has shortcomings such as poor stability of equipment and plates, poor matching of digital proofing equipment, plate punching machine and digital workflow. These reasons have caused many enterprises to choose to wait and see instead of buying rashly

the promotion and popularization of any new technology must go through a gradual process

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