Digital proofing and CTP technology are two technologies developed independently, but the common characteristics are destined to bundle these two technologies together. Especially the application and popularization of CTP technology has greatly promoted the development of digital proofing. As a technology, digital proofing can exist independently, but if CTP technology is to develop, it must rely on the help of digital proofing. The reason is very simple. The result obtained by CTP technology is a printing plate, but it is impossible to know the final printing effect by looking at the printing plate itself. Because the CTP technology eliminates the intermediate medium in the process of making a film-film, it is impossible to use the film for printing and printing like the traditional plate-making process. So how do you know what the final printed product looks like? There is only one method, which is to use digital proofing to complete proofing, signing and follow-up work. Some people may ask, is it not possible to use the CTP plate-making mechanism to directly proof on the proofer? In theory, of course it is possible, but in terms of cost, no one will do so. As a result, digital proofing has also become an essential assistant and assistive technology for CTP technology.
CTP technology + digital proofing + workflow software together constitute a complete digital pre-press platemaking solution.
Digital proofing
The digital proofing technology most used in the printing industry now uses large format color inkjet printers or large format color laser printers with very high proofing quality as the output device to print proofs. These devices are continuously adjustable output devices, although some manufacturers have tried to use color inkjet printers to simulate printed dots, but the effect is not very satisfactory.
In addition to the continuously adjustable digital proofing equipment, some companies have also developed "true dot" digital proofing equipment. The most representative equipment is Fujifilm's Final proof and Kodak's Approval XP proofer. But the price of such professional equipment is very expensive. Therefore, in the actual digital proofing production, the application of large format inkjet printers is more common.
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