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Figure 8 shows the development trend of the CTP plate type, in which the photosensitive resin-based violet laser has the greatest development potential. The feature is that the equipment cost is relatively low, and the plate printing adaptability is closer to the traditional PS plate. 
The conventional PS version of the CTP system (CTcP) is also being actively promoted. The current problem is that the equipment is relatively complicated and the price is relatively expensive. However, its development trend deserves our attention.
(4) The ultimate CTP is direct imaging (DI)
Direct imaging on the machine directly images the plate installed on the plate cylinder of the printing press, shortening the workflow from the prepress to the final print, and meeting the printing requirements of the print with a small number of prints and a short delivery time. However, due to its inability to be compatible with existing offset printing equipment, it will affect its promotion and application within a certain period of time.
(5) Influence of CTP Technology on Traditional Processes Figure 9 shows the development trends of CTP equipment and laser imagesetters. The rise and popularity of CTP technology have a great impact on traditional laser imagesetters.
The use of film in the global printing industry will continue to decline, but in some places the production and sales volume of the copy still remains large. Although there are a large number of laser image imagesetters in the world, the use of laser imagesetters is decreasing in some large and medium-sized printing companies. Although the number of laser phototextors in developing countries in Mexico, South America and Asia is increasing, the amount of growth is still less than that of the United States. The number of laser phototypesetters in Europe and Japan has decreased. Figure 10 shows the consumption trends of printed films from 2002 to 2006.
Figure 11 shows the CTP version and the Yangshuo PS version. Negative graph PS version of the consumer trend chart. With the application of CTP, the use of PS-versions of metal-based substrates will decrease, and the amount of CTP-based media will increase. Many users still retain the analog production workflow for a certain period of time after they have been on the CTP.
With some small commercial printing companies installing non-metal-based CTP systems, the shift from printing companies to CTP has also increased the use of non-metal-based printing plates such as polyester. However, after 2003, due to the increase in the use of DI Inkjet machines and digital printing machines using toner technology, the use of polyester version of CTP will begin to decline. Figure 12 is a graph showing the consumption trend of non-metal-based printing plates from 2002 to 2006.
(To be continued)
Printing Technology Development Trends (3)
(3) Selection of CTP equipment types The biggest problem in the introduction of CTP systems should be the selection of equipment types. Different types of equipment have different characteristics and are used in different areas. In addition, the different types of CTP media increase the difficulty of device selection.