CTP Computer to Plate
For CTP plate applications, the first thing that comes to mind is newspaper printing companies. However, judging from the development in the past two years, commercial printing companies, especially those that pursue printing quality, have become the protagonists of CTP applications. Commercial printing companies will be the main consumer of CTP computer to plate in the future.
The emergence of CTP plates has greatly simplified the plate-making process, effectively improved work efficiency, and significantly reduced the disadvantages of traditional plate-making outlets that are prone to human loss. CTP plate technology can be further subdivided into thermal CTP plate, UV-CTP plate and other technologies. At present, thermal CTP plate technology and UV-CTP plate technology have become the mainstream technologies for offset printing plates.
The coating of the thermal CTP plate is composed of a temperature-sensitive polymer or ablation layer, which is mainly sensitive to infrared lasers of 800nmto 850nm. When the temperature does not reach the critical value, the printing plate will not react, and when the temperature exceeds the critical value, the dot size and shape will not be affected.
Commercial and packaging printing companies that have high requirements for the quality of printed products and undertake printing tasks such as high-end fine picture albums and exquisite packaging products all choose thermal CTP technology with quality as the priority. The weakness of thermal CTP plates is that they have low sensitivity, about tens to hundreds of millijoules per square centimeter. In order to achieve appropriate production efficiency, the technology of multi-laser beam parallel recording is often used, and the cost of the light source is relatively high.
The thickness of the aluminum sheet used in CTP plates is generally 0.280mm, which is slightly thicker than the currently produced PS plates (the thickness of the PS plate base is 0.270mm±0.005mm).
In recent years, CTP plates have made good progress in all aspects, including printing durability, resolution, photosensitivity, adaptability to printing conditions, and environmental protection. Welcome to leave message below to inquire thermal ctp plate price.
