Modern newspaper printing CTP technology
CTP technology is a general term for offline direct plate-making, on-board direct plate-making, and direct printing package technology. Because it simplifies the plate-making process, there is no data loss, and the dots are sharp, the dot reproducibility is good, the plate-making cycle is short, the plate-making time is short, the entire production cycle of the printed matter is shortened, and the printing quality is excellent.
The reason why CTP technology can develop rapidly in the field of newspaper printing is mainly because of its fast speed and high quality, which is very suitable for the high aging time required by newspaper printing. Although the CTP system requires huge investment, large newspaper groups generally have strong bonuses and strong technical force, and can actively accept and adopt new technologies. Therefore, CTP technology has been rapidly developed and applied in some major domestic newspaper groups. According to incomplete statistics, the number of CTP systems installed in China's newspaper industry currently exceeds 40.
In the traditional plate-making process, the time required for printing and proofing is relatively long. Only proofs can be printed and printed after being approved by customers, and the transportation 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 of the traditional process have become an important factor restricting the development of newspaper printing.
The entire process of the CTP process processes and transmits 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 publishing time, and improves the quality of printing This reduces personnel and venues, reduces the complexity of equipment maintenance, and reduces environmental pollution. According to calculations, CTP technology can save about 70% of pre-press working time and shorten the plate-making time by nearly an hour. At the same time, due to the vitality of the film, the overprint accuracy and dot quality of color prints are reliably guaranteed, and the alignment error is only about 0.002mm, which solves the problems of manual extraction and labor-consuming and poor accuracy, and reduces the startup preparation time.
From the perspective of printing effect, the traditional plate-making process can only reproduce 5% to 95% of the dots, while the CTP process can reproduce 2% to 99% of the dots; newspapers printed with CTP technology have more delicate and rich layers and more vivid colors; Due to the reduction of intermediate links, the accumulation of quality errors has significantly decreased, and the quality controllability has been significantly enhanced. Because the CTP technology reduces the loss of dots on exposed film and printing plates, it also makes the application of FM networks possible.
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