As early as 1995, Germany's basysPrint has launched the first system using CTcP technology, but it is only an experimental product and has not been put into mass production; on drupa2000, the traditional PS version of the ultraviolet platform is used for direct plate making The machine was officially launched, causing great repercussions, but it did not rank among the mainstream technologies of CTP; drupa2004, in the promotion of the most popular JDF digital workflow of the year, the traditional PS version-based CTcP technology that debuted almost simultaneously with the thermal CTP was buried It was only after nearly 10 years that it shined, which caused widespread concern in the printing industry. Esko-Graphics, AlfaQuest and PurupEskofot have also launched their own CTcP products. In addition to being extremely competitive in the quality and efficiency of direct platemaking, this technology also has the advantage of low cost, and can better complete the transition from analog to digital conflict-free and more perfect docking, opening up CTP applications more A wide range of new fields.
Technical characteristics of CTcP
CTcP is the English abbreviation of Computer To Conventional Plate. It refers to the computer-to-plate making on the traditional PS plate. It is an implementation form of the CTP process. However, there is no need to make any changes in the pre-press process and on-machine printing. The traditional UV light is used The basic imaging principle of the printing plate and the light source are basically unchanged. The only requirement is that the system is equipped with UV-Setter. Most offset printing materials can be imaged by UV-Setter exposure, which not only has the high quality and efficiency of CTP, but also retains It has the characteristics of easy operation and stable performance when the traditional plate is printed on the machine. CTcP technology is best represented by Besin. The core technology of the company's CTcP is digital micromirror device (DMD).
The unique advantages of CTcP
1. Significantly reduce pre-press production costs
The first is to simplify the process flow, reducing the process of film production, manual imposition and printing in the traditional process, which can save consumables and related costs. Second, it is suitable for any traditional PS plate, using conventional developing machine and processing chemicals (and has been released without chemical processing plate), which can be easily operated under the conditions of bright room. Third, there is no need to modify the existing hardware configuration, 1-bitTiff format data can be used, and RIP data can be used, no special network interface is needed, and it can be networked with the existing network environment to achieve low-cost operation and system operation 2. The comprehensive maintenance cost can be reduced by about 40% compared to CTP using special plates.
2. Improve printing quality and efficiency
Adopt square dot imaging, achieve high-quality printing at a lower resolution, and can significantly shorten the RIP time, reduce the amount of data processed, save the memory of the computer system, and expose faster. Square dots have clear, sharp edges and faithful originals, and can achieve higher copy quality at the same resolution. The dot matrix type one-to-one corresponding PS version of digital imaging can eliminate the phenomenon of dot gain and dirty dots during plate making, which is the same as thermal and photosensitive CTP technology.
3. Reduce printing debugging time and material loss
Without plate positioning, there will be no need to remake the plate due to inaccurate positioning, avoiding a lot of time to proofread when printing on the machine, which can minimize the time for short version printing and machine debugging and debugging, reduce the time and paper during debugging And ink consumption.
4. Give full play to the potential performance of the traditional PS version
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