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1. Introducing advanced prepress processing system
The prerequisite for determining the ink preset technology is an advanced prepress processing system with a digital workflow capable of outputting PPF or PDF files, since the PPF or PDF file is the data voucher for the ink preset system, which directly determines the ink pre-determination. The accuracy of the settings, such as Agfa's digital workflow, can effectively, effectively and stably guarantee the effective conversion of PDF or PPF files, and output the graphic information to a standard dot matrix file close to 60ppi.
2. Prepress personnel must fully understand the backend process
Dot matrix units of the layout file is a PDF file or a PPF, flow control center will require one correspondence relation file set with the color to the printing machine during its transfer, i.e., determined according to the imported file version sequence, which requires Prepress personnel must not only have a solid prepress image processing knowledge, but also have a wealth of printing knowledge , and have a full understanding of the printing machine's production methods, such as printing methods, drum diameter parameters, etc. must be clear to the chest to ensure Pre-press data import accuracy. therefore,
At the beginning of the introduction of the ink preset system, the business backbone should be selected from the prepress department to go deep into the printing workshop and follow the shift production to familiarize with the specific performance of the press and to plan the production of the product.
3. System planning for production process
For sheetfed presses, one prints a PPF or PDF file for one layout or both front and back. A PPF or PDF file corresponds to a print job. This is the simplest case. Just determine the color sequence. can. However, more complex messages wheels and wide web printing double-size
newspaper printing press, the paper path to use for each set off up to the plate 8, for example, KBA COMET printer, a plurality of printed paper Road, up to 32 sets of plates, corresponding to 32 PPF or PDF files, then you need to accurately import PPF or PDF files according to the order, the data import is too complicated, the operation time is too long, which brings us a lot of trouble This has also become the biggest obstacle to the application of ink preset technology in large rotary presses. (Editor: Wang Yang)
The above content is selected from the 6th issue of “Printing Technology·Digital Graphic Arts†in 2013. For more journal content, please pay attention to the journal channel. The latest journal content clicks into the electronic journal channel of Keyin.com.
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