With the continuous development of science and technology, digital prepress technology has also been widely used, the importance of this process can be imagined. The following editor will explain in detail the digital prepress technology.
What is digital prepress
Through computer hardware and prepress related software to form a full page of graphic data, all using digital files, and then complete the entire prepress operation process through the network, including: art design, text input, table making, layout editing, image scanning, Digital image capture, make small version, imposition version, and print digital samples, and finally output a screen by laser digital image output machine for printing plate, or even make a printing plate (CTP) directly through the completion of the computer, the entire printing The previous process is done in a digital environment.
What are the suitability of digital prepress
1. Text description
Due to the different types of text manuscripts, there are printed on coated paper, written on molded paper, and written on rice paper or other paper with brushes, and their reflectances are different. When copying with an electronic scanner, special attention must be paid to the revised exposure conditions. You can also see the results directly from the preview screen, and immediately adjust the settings to obtain good results.
2. Picture scanning
Because the density domain of the original cannot often be matched with the scanner, special attention must be paid when scanning, especially color control, gray balance, control of light and dark parts and version, or local adjustment of the density range and curve value of bright to dark parts (or (Gamma value) and other tones, may have considerable quality differences due to different operator skills. Therefore, when adjusting, always pay attention to comparing the quality difference between the original and the copy. Of course, it is not difficult to obtain the ideal copy with automatic adjustment software.
3. Computer Group Page
With the development of computers and software, it has been able to quickly complete the page grouping and imposition work. It is more convenient than manual, fast, accurate and can be modified at any time, but once the film or printing plate is output and then modified, it must be remade, which will increase a lot of costs Therefore, familiarize yourself with the software functions before grouping pages and imposition, which can achieve a multiplier effect. In addition, the bookbinding method should be considered before imposing a large version. Because the binding method is different, the number of impositions and the order of imposition are also different. Although the order of plastic binding, hardcover and paperback is the same, the reserved spine distances are different.
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