Development trend of the most popular uvctp plate

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The development trend of UV-CTP plate making system technology


uv-c cotton fields in Xinjiang need to use film TP technology. TP technology refers to a way of computer direct plate making on traditional PS plate by using UV light or UV laser, which was also called CTCP technology at the earliest

this technology has the advantages of omitting film output, low comprehensive cost (due to the use of Conventional PS plate, common developer and common plate punching machine, the cost is only half of that of digital heat sensitive, digital violet laser or non processing plate), relatively less equipment investment, and can be operated in the open room (yellow light safety lamp), which is conducive to environmental protection. At present, the UV-CTP plate making machine of punshgraphix has developed to the fifth generation. The imaging quality and plate making speed are significantly higher than those of previous generations, and the operation stability is good. According to the sales personnel of Shanghai saitu printing equipment company, the general agent of CTCP direct plate making machine in China of basysprint company (which has been acquired by punshgraphics company), the total number of UV-CTP plate making machines in the world in 2006 was 1500

with the improvement of the light source power of the plate making machine, the application of the new generation dsi2 digital plus temperature averaging technology, and the continuous introduction of high sensitivity plates by many world-famous plate manufacturing companies, the application of UV-CTP technology has developed rapidly. At present, UV-CTP plate making machines account for about 5% of the total global CTP plate making machines (30000 at the end of 2006)

I. UV-CTP technology

1 Features of UV-CTP technology

(1) digital plate making process is adopted, eliminating the links such as film output and reducing the loss of information transmission

(2) square dots are used to improve resolution, compress output files, shorten rip processing time and data transmission time, and improve plate making efficiency

(3) plate making operation can be carried out under the bright room (yellow safety light)

(4) Conventional PS version and drug application are adopted, with low price and comprehensive cost

(5) the laser head of plate making machine has long service life (about 3000h), low price (about 10000 yuan) and low maintenance cost

(6) the full-automatic, semi-automatic and manual version loading methods that can reduce the emissions of CO2 and SO2 by more than 64million tons in China can be selected

2. UV-CTP technology features of UV laser

in recent years, with the introduction of 365nm and 375nm semiconductor UV lasers, it has brought dawn to UV-CTP. UV-CTP system using violet laser source will occupy the market quickly and obtain good economic benefits

the future UV-CTP technology will present the following advantages:

(1) faster plate making

(2) higher accuracy

(3) better compatibility than traditional PS plates

see Table 1 for the comparison of relevant performance of thermal CTP, violet laser CTP and UV-CTP systems

it can be predicted that with the development of semiconductor UV laser technology and the high effect process of plates, UV-CTP will be the product of the combination of the advantages of UV laser CTP and UV-CTP

II. UV-CTP plate making equipment

uv-ctp plate making machine can be divided into UV-CTP and UV laser UV-CTP according to the light source used

the former is like the UV setter series plate making machine launched by punchgraphix (parent company of basysprint company), and the latter is like the xposeuv setter series plate making machine launched by L Scher (Rosen company)

1. UV UV CTP plate making machine

the earliest UV CTCP plate making machine was introduced by purup eskofot, basysprint and Esko graphics after drupa1995. Especially after 2000, basysprint company commercialized it and launched four series of plate making machines, including UV setter5, 6, 7 and 11, which added vitality to the CTP market and attracted the investment of many small and medium-sized printing enterprises. In 2004, punchgraphix acquired basysprint and renamed CTCP technology UV CTP technology. By 2006, at least 1500 UV-CTP plate making machines had been installed in the world and 70 in mainland China, mainly distributed in Guangdong (Dongguan, Shenzhen), Zhejiang, Shanxi, northeast and other places

in 2006, Setu Technology Co., Ltd. cooperated with basysprin steel ball as the upper test piece and fixed in a special collet in China, and became the general agent of CTCP products of basysprint in China. Seto specializes in European digital prepress equipment and printing equipment. Headquartered in Hong Kong, Seto has branches in Shenzhen, Shanghai and Beijing

according to Mr. Lin, Sales Department of Shanghai saitu printing equipment Co., Ltd., in the second half of 2007, basysprint has sold more than 20 UV-CTP plate making machines in Chinese Mainland

l scherxpose launched by L Scher! See table 2[1] for technical parameters of UV laser UV-CTP plate making machine

in recent years, with the introduction of 355nm, 365nm and 375nm UV laser diodes by Photonics and PowerTechnology companies, the laser power is gradually enhanced, and the requirements for plate sensitivity are correspondingly reduced, bringing greater development space for the application of UV-CTP technology. Among them, the 375nm UV laser diode introduced by Nichia chemical has a power of 800MW, and has been developing corresponding CTP users. At the 2006 Shanghai all printing exhibition, l Scher company of Switzerland exhibited the xposeuv CTP NEW plate making machine, which uses a 405nm UV laser and has a plate making speed of 20 sheets/hour. Hong Kong yongjingtang company purchased this plate making machine during the exhibition

2. UV laser UV-CTP plate making machine the development of UV laser technology has brought a new round of dawn and business opportunities for the promotion of UV-CTP. For example, l Scher company has launched L scherxpose! 130uv, 160uv and 190uv UV laser UV-CTP plate making machines have been sold all over the world, and more than 20 have been sold by april2007. The 405nm laser light source is adopted, which is close to the photosensitive peak of conventional PS. PS plate can be used for direct plate making

The rapid development of UV CTP plate making machine is determined by its technological progress. See Table 3 for the technical development of UV-CTP plate making machine

III. imaging principle of UV-CTP plate making

imaging principle of UV setter series plate making machine of sysprint company, The digital imaging technology (DSI, dsi2) has been developed. The traditional PS plate is exposed directly by ultraviolet light source (high pressure mercury lamp, 350 ~ 420nm) to make a printing plate for printing

the core component of the plate making machine is the microscope (DMD), which is a 4cm2 chip with tens of thousands of ultra-fine lenses. Each ultra-fine lens will process the image information sent by rip and then expose it. The working principle is shown in Figure 1

at present, with the application of dsi2 technology, the increase of light source power, the application of continuous scanning and the improvement of plate sensitivity, the plate making speed of UV setter series plate making machines is further improved, up to 25 ~ 30 sheets/hour

2. L Scher xpose! Imaging principle of series UV-CTP plate making machine

this series of plate making machine adopts 405nmuv laser light source to expose the traditional PS plate, which can obtain high resolution. It is applied to frequency modulation, amplitude modulation and mixed addition respectively, and the imaging speed is the same as that of xpose! The thermal version is equivalent. Its biggest advantage is that the conversion between UV laser and thermal laser (830nm) can be realized only by changing the laser head

l Scher xpose! Series UV-CTP plate making machine is made by its xpose! The thermosensitive plate making machine is improved. It adopts a unique laser group and inner drum design. The optical components are very close to the plate to ensure the maximum capacity transfer efficiency and exposure accuracy. According to larsjanneryd, vice president of L Scher, the xpose130uv plate making machine can complete the exposure of 1000mm and 700mm plates within 2min, with a production capacity of 20 sheets/hour. The xpose160uv and 190uv plate making machines use the double plate exposure structure to double the plate making capacity

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