What is the film in printing?

1, film output, this technology is an exposure process similar to photography. It first rips graphics and characters into dot matrix images, and then converts them into dominant laser signals. By using the longitudinal and transverse motion of the laser relative to the film, the laser spot is hit at the corresponding position of the film to expose the corresponding part of the film, and then the unexposed part is washed off through the development and fixing process of the developer, thus forming a dot matrix image on the film. ?

2. After the film is output, through proofing and proofreading, the qualified film will be delivered to the printing factory, which will print and make up the products according to the specifications of the equipment of the unit.

There are three ways to check the actual printing effect before printing:

First, before the release of the film, release a good quality color inkjet draft (cheap, but not easy to read and accurate);

Second, you can use digital printing, first print a few copies, then release the film after confirmation, and then print on the computer; If the quantity is small, please print directly by digital, which is fast and cheap;

Third, let the film company type the manuscript after the film is released (try typing six finished products with a proofing printer first). This is the most traditional way, the price is not low, the speed is slow, but the effect is good.

Extended data:

Process summary of film output

1, when making a manuscript, choose the common design and production software supported by the phototypesetting output system.

2. The mode of the pictures in this paper must be CMYK mode, and the accuracy should be at least 300×300dpi/ pixel/inch.

3. Check whether the characters in the manuscript are four-color characters. If so, it must be changed to monochrome 100% black.

4. If pagemaker, Weisi, Founder Book Edition and Illustrator are adopted, the linked picture file must be copied together with the original file.

5.photoshop file should be psd file, which is easy to modify.

6. Fonts are commonly used, such as Founder and Wen Ding. Don't use rare fonts. If you have already used it, you can use coreldraw and Illustrator to convert the text into outlines, which can avoid the problem that you can't output because there is no such font in the output center. If there is a supplementary word file, you must copy it together.

7. Inform the finished product size, printing quantity, printing paper, etc. Printed products are clearly visible in the output center, which is convenient for imposition and screen hanging.

8. If the contents of two pages are the same, but the black text is different (a common phenomenon), just output four colors of CMYK on the first page and K on the second page to avoid waste. If there are only two colors (such as red and black) and the printing requirements are not high, you only need to output them in one color board at the same time, and you don't need to separate them into two colors. It can be processed when printing plate making.

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