Current status and development trend of global prepress technology
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The main format for prepress production is POSTSCRIPT, and the input part is still dependent on color scanning (SCANNER). From a production point of view, there is no way to meet its needs. At present, the Asia-Pacific region still relies on traditional proofing. The main reason is that the principle of traditional proofing is the same as that of printing. Therefore, customers always think that the effect of traditional proofing can show the same effect when actually printing.
There are many types in digital proofing, which are roughly divided into inkjet, toner and printing dot. Inkjet type is divided into black and white and color; while the toner type has a large size limitation, generally the maximum output size is A3; the cost of printing dot-type proofing is higher, and the A4 size costs 50 yuan.
Color management is very important in the prepress work section. The principle of color management system is very scientific, but its application is more limited. It is not difficult to use, but how to ensure the consistency of color used for a long time. At present, there are some limitations in application. With the continuous development of CTP, the entire prepress process is digitized, and the color management system should be able to take care of every link and do comprehensive color control.
The change in prepress industry is a revolution. Every time after the change, the industry must improve equipment, train employees, and learn new technologies again. A lot of digital printing and CTP were exhibited in this year's DRUPA. In addition to the machine, the CTP is also very important, and the application principle of each plate manufacturer is not the same. The entire CTP or prepress WORKFLOW has a different format for each vendor, but the PDF format is the same. At present, the workflow of POSTSCRIPT has many shortcomings, such as: too large files or other problems, but as the network becomes more and more popular, PDF will become more and more popular.
In addition to OFFSET printing, the printing quality of electrostatic printing has recently been acceptable. In the process of conversion, it does color management, the size is converted into the size of the file to make a large version, you can do JUST IN TIME, one input, you can execute multiple outputs, of course, you must have a database to monitor The whole work is going on.
Proofing can support digital proofing through the Internet. The output must support CTP and CTF. It must have backup data. The storage type has CD and DVD. Digital has a great influence on the prepress industry. More and more colors require huge numbers to describe. In addition, the complexity of the archives, the reduction of time required, and the competition for mergers in the industry require digital support.
The existence of the Internet has advantages and disadvantages for the industry. The development of the Internet has gradually led to the integration of the printing process. In the past, the entire printing factory only made printing, and the plate making factory only made plate making. However, in recent years, printers must understand the prepress or prepress processing, and the plate maker must also understand the completeness. Printing and postpress process.
Of course, in the fierce competition, investment must maintain the return on investment, such as CTP, the use rate of its equipment is high; many manufacturers in Europe and the United States today are transmitting electronic files, but the domestic is not fully used, which needs to be promoted. .
Digital printing can be continuously improved. From the perspective of the degree of use, the restrictions are still very large, and it is hoped that the future will mature. The output is now also dependent on PRINT. In the future, there will be a lot of printing proofs that will use digital proofing, and I look forward to digital proofing in the future.