The hottest point about the recent development of

2022-09-22
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According to relevant statistics, more than 4000 CTP special equipment have been installed worldwide, an increase of 30% over the previous year. The United States is the most widely used, accounting for about 37%; Followed by European countries, accounting for about 40% in total; There are not many applications in Japan, but they have also increased to more than 200

from the perspective of the plates used: they are mainly photosensitive and thermosensitive. In the previous period, it seemed that thermal type was the mainstream, but in recent years, photosensitive type seems to have a turn for the better, and the trend of dividing the market with thermal type will continue. This is mainly due to the development and application of various spectral lasers, which makes it possible for CTP plates to develop in the direction of visible light and short wavelength. Such as 780nm semiconductor laser, 633nm He Ne laser, 532nm fd-yag laser, 488nm argon ion laser, and even 380nm laser led

the advantages of using short wavelength lasers are: lower cost, faster speed, higher resolution, and bright room operation. Photosensitive CTP plates are divided into silver salt type and photopolymer material type; The silver salt type has the advantage of fast photosensitivity, but low printing resistance, while the photopolymer type has a slow photosensitivity, which can be baked, and the printing resistance can be increased to more than 800000 prints

the thermal CTP plate is constantly improved, and its first generation needs to be pre heated during use; The second generation is improved without preheating, while the third generation is further developed without punching, so it is called dry thermal version. After scanning, it can be printed on the printing machine, and the resolution is increased to 300 lines/inch, faithfully restoring 1-99% points

from a regional perspective, the thermal version is more popular in the United States, and the photosensitive type (including silver salt and photopolymerization type. In addition, they are also based on the process control technology and equipment of self strengthening of bacterial energy supply) is more popular in Europe. From the perspective of users, the majority of CTP applications are still newspaper printing houses, such as the "New York Times" and "USA Today" in the United States, which have installed about 200 sets of CTP equipment. Some major European newspapers have also introduced more. Newspapers do not have high requirements for the resolution of CTP plates, but have high requirements for the output speed. Generally, they are required to output more than 100 pages per hour, which is one of the reasons why European newspapers tend to use photosensitive plates. It is reported that at present, there is a high efficiency of producing 240 versions per hour (thermal type up to about 80 versions)

at the duruba Expo, there were 96 manufacturers of CTP equipment and more than 20 major manufacturers of plates. Creo, a Canadian manufacturer of CTP plates and equipment, sold a total of 1200 sets by the summer of 1999. Originally a partner of Heidelberg, it has now changed to cooperate with Saigon. Besides its own brand promotion of Tvend setev CTP system, Heidelberg also collaborated with big Japan screen company and acquired the office equipment of Kodak company

kpg is an important manufacturer of thermal version, and its most representative is thermal 830 version. In November 1999, it launched the improved 830A as a dry thermal version

the development and competition of CTP special equipment is still very active. In 1999, nearly 20 new products were launched, more than half of which are for newspapers. For example, ECRM company has launched a high-speed hol of about US $100000. Our products provide long-term after-sales guarantee for ogon CTP, aknon tech company has also launched a high-speed, low-cost CTP with built-in hologon reflector, and KPG company has launched a split thermal CTP device of about US $100000 (previously, such devices were mostly US $150000). Erchen grad's high-speed CTP equipment coloec-8, which uses blue violet laser diodes, is the new product that has attracted the most attention. The equipment adopts a rotating laser and an inner drum device, which can continue to produce deformation every hour. If you want to increase the plastic deformation, you can scan 18 plates (2500dpi). When using silver salt plates, you can operate under yellow light, and when using optical polymer plates produced by Fuji company, you can output at 5 MW low power. These characteristics constitute the competitiveness of thermal plates

due to the success of UV laser as a light source, even ordinary UV light is transformed into parallel light through the lens and projected onto a special DMD (digitae micromivvov devic), and the possibility of using a traditional PS plate as a CTP plate has also begun to be realized. For example, basic uv-710 HS of basgo print company in the United States is a CTP system that can use a high sensitivity PS plate. Due to the optical system with double scanning heads, the speed is doubled, The resolution is 1500dpi, and the price is still high, which needs to be further reduced

in the promotion and application of CTP, insiders have gradually deepened their understanding of the necessity and importance of digital workflow. Simply speaking, CTP is difficult to play or reflect the advantages of CTP. The application of PDF format and the exploration of CIP3 provide conditions for the improvement of CTP digital workflow: 335 (4) 40. It is believed that the development of CTP and the improvement and adoption of digital workflow will promote each other in future practice

source: printed in Shanghai

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