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The use experience of CTP in Hong Kong printing enterprises (Part 2)

the pace of computer direct plate making (CTP) in Hong Kong printing enterprises is accelerating. In mid-1998, there were only five CTPs installed in Hong Kong, but by February 2002, this number had reached 40, an increase of more than eight times, of which about half were installed in 2001. Although Hong Kong was hit by the financial storm during this period, the economy has not yet improved, and the business environment is still very difficult. However, the price of CTP plates continues to decline, the effect of digital typewriting is becoming more and more mature, and the printing enterprises that have installed CTP have made a positive reputation in terms of cost-effectiveness. Various factors have made the benefits of adopting CTP exceed the costs that need to be paid. Many printing enterprises have included the installation of CTP into the agenda of their development plans

substantial increase in production efficiency

almost all printing enterprises that have used CTP agree that the production efficiency will be greatly improved after using CTP. Mr. Ma Shifang of express plate making and Printing Co., Ltd. said: "Before CTP, the time for registration and color matching is about 15 to 20 minutes for each print. Therefore, the loss of paper is about 100 to 200 pieces each time, which is the basic loss of time and paper for each print. Now when CTP is used to produce zinc plate, the first piece of paper can be completely set. The Heidelberg CTP production system we use can output the PPF ink control document of CIP3, and only 20 to 30 pieces of paper are needed for color matching, which reduces the loss very much More, and the cost is more competitive. Plant expenses, machine depreciation, employee wages and other expenses are relatively fixed. Therefore, saving time can make us print one or two more jobs every day. The efficiency of the printing press is increased by 30%, which naturally brings more benefits. "

the original business of American Express was color separation and plate making, film output and traditional typewriting. The printing machine and CTP production line in Heidelberg were purchased in the middle of 2001. CTP adopts delta technology workflow, including delta prepserver, which is responsible for rip and file management, signation assembly workstation, CPC 32 ink calculation workstation, a trendsetter thermal zinc plate output machine, and three large format inkjet digital typewriters. ICC characteristic files are calculated and generated by print open software, The staff responsible for color management will regularly update the ICC feature file. This is a very advanced CTP production line. The digital typewriting adopts the room concept to ensure that it is consistent with the transmission (4) on the zinc plate to discharge the residual oil in the oil tank. Due to its rich experience in prepress, it took only two weeks of training after CTP installation and it was fully put into production. Although their printing is a newly developed business, most customers are very satisfied with the output of CTP zinc plates, and they also entrust the printing to express, which makes them busy from morning to night

in fact, CTP is not the patent of large enterprises. Some small and medium-sized printing enterprises in Hong Kong are also considering applying CTP in the parts and short edition market. For example, the printing service of urgent mail can promise to complete 1000 A4 color leaflets within two hours. This is equivalent to printing 250 sheets of paper on a four open printing machine. If it goes well, four to five such jobs can be completed in an hour. This delivery speed is difficult to achieve without CTP. CTP will gradually change the service and competition mode of short edition printing

whether the CTP system is easy to use and whether it can effectively prevent problematic manuscripts from entering the production line has always been the key to the smooth operation of CTP. Generally, the method of manually checking manuscripts by export companies is time-consuming, error prone, inefficient and easy to cause bottlenecks. Therefore, PDF has become an ideal format for CTP production. The reason is that in the process of forming PDF files, the system has checked the integrity and correctness of manuscripts, which can prevent problematic manuscripts from entering the system. LEGO Printing Co., Ltd. adopts Agfa's apogee Series 2 workflow because of its flexible support for PDF. It can generate optimized PDF files on the client side and convert PDF files in the background, and the system is easy to learn. According to Mr. Wu Liesheng, a partner of Lego: "Before installing CTP, we didn't have any prepress experience. All the software and computers related to the mechanical connection deformation measuring instrument of printed steel bar were developed and produced by China Academy of Building Sciences, and they were purchased together when installing CTP. We have two employees in charge of CTP production. When CTP system was first installed, one employee just graduated from college, and the other was transferred by customer service team. Due to apogee operation It's easy. It only takes 3 months to train 2 people, and then it can be put into full production. Our system has been in operation for nearly a year, during which no printing error occurred, nor did we ask for the support services of AGFA. At present, about 20% of the prints are sent to CTP system to output zinc plates. At first, only some customers tried CTP because of cost. Now even the most demanding customers are willing to use it. Some customers' contributions are already in PDF format, which can be made up immediately, which greatly improves the throughput of the system and accelerates the pace of production. The masters in the printing workshop also like CTP very much, because the zinc plate of CTP is easier to register and print, the production efficiency is significantly improved than before, and their printing technology can also be played better. "

LIGO's main business is book printing. At present, there are a total of 6 printing machines, and most of the printed products are transported to Europe and the United States and other cities to determine that the sealing of samples requires thermal insulation performance first; By vacuumizing the vacuum chamber. They adopt a complete production process of apogee Series 2, including pilot responsible for converting PDF and mosaic, PDF rip for point processing, printdrive for managing output, and large format Galileo with violet laser for zinc plate output machine. According to Mr. Wu, Galileo is adopted because of its fast output speed. Digital typewriting includes two large format Sherpa and ICC feature files, which are calculated and generated by colortune pro

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