The Application of CTP in the Field of Modern Newspaper Printing

CTP technology is the collective name for off-line direct plate making, on-machine direct plate making, and direct printing line mounting technology. Because it simplifies the platemaking process, no data is lost, and the network is sharp, the dot reproducibility is good, the plate making cycle is short, and the time for loading the plate is small. The entire production cycle of the printed product is shortened and the printing quality is excellent.

The reason why CTP technology can develop rapidly in the field of newspaper printing is mainly due to its high speed and high quality, which is very suitable for the high timeliness required by newspaper printing. Although the CTP system needs huge investment, the large newspaper group generally has strong bonuses and strong technical force. It can actively accept and adopt new technologies. Therefore, CTP technology has been rapidly developed and applied in some large newspaper groups in China. According to incomplete statistics, China's newspaper industry has more than 40 installations of CTP systems.

In the traditional platemaking process, printing and proofing take a long time. Only proofs can be printed and printed after being approved by the customer. The transport and management of the film may also adversely affect the printing quality. For newspapers with strong timeliness and need to be printed in different places, these defects in traditional processes have become an important factor restricting the development of newspaper printing.

The whole process of CTP process is processed and transmitted with digital information. At the same time, digital proofing technology is also applied. Therefore, the advantages of CTP technology in replacing the traditional plate making process are obvious. It simplifies the process, saves the publishing time, and improves the quality of printing products. People and venues reduce the complexity of equipment maintenance and reduce environmental pollution. According to calculations, CTP technology can save about 70% of the pre-press work time, and the plate-making time can be shortened by nearly one hour. At the same time, due to the vitality of the film, the overprint accuracy and dot quality of the color printing products have been reliably guaranteed. The alignment error is only about 0.002 mm, which solves the problem of manual extraction and time consuming, poor accuracy, and reduces boot preparation time.

From the printing effect point of view, the traditional plate-making process can only reproduce 5% to 95% of the dot, while the CTP process can reproduce 2% to 99% of the dot; printed newspapers using CTP technology, the level of more delicate, rich, more vivid colors; Due to the reduction of intermediate links, the accumulation of quality errors has been significantly reduced, and the controllability of quality has been significantly enhanced. Because the CTP technology reduces the loss of the dots on the exposed film and printing plate, it also makes the application of the FM network possible.