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Talking about the problems that should be paid attention to in design and production from the perspective of printing

with the continuous intensification of market competition, many enterprises begin to set up internal design and production personnel, rather than professional advertising companies to complete the design and production work, which can reduce costs to a certain extent and facilitate enterprises to control the design and production link, but at the same time, because internal design and production personnel may not be as familiar with prepress requirements as professional institutions, There will be some common sense mistakes. After the completion of design and production, many enterprises will require the printing factory to directly produce films and print, which will transfer the problem to the printing factory. According to the common problems we have accumulated, this internal newsletter introduces some basic common sense related to prepress production. These common sense are applicable to end users with internal designers, as well as to start-up advertising companies that are not familiar with printing requirements

1. Design and production is an essential link before printing. The completion of finished printing products must go through four links: design and production, film proofing, machine printing and post-processing, and none of them is indispensable

2. Design and production is the process of using software to mix graphics and text, and it is the previous link of film proofing. Therefore, the requirements of film proofing must be considered in design and production. However, it is not enough to consider only from the perspective of film proofing, because its ultimate goal is to print finished products, so we must also consider design and production from the perspective of printing. Otherwise, some design and production methods are not a problem for proofing, but they will cause considerable problems for printing

3. Design and production can be completed with different software. There is no big difference between the advantages and disadvantages of the software, but only based on the preference and familiarity of the design and production personnel. But generally speaking, in four-color (color) printing, Microsoft Office typesetting cannot be used, because Microsoft Word and excel are word processing software, not professional typesetting software, and cannot be used to output four-color films (red, yellow, blue, black) used in color printing. In color printing, Photoshop, PageMaker, illustrator, freehand, CorelDRAW and other professional typesetting software should be used for typesetting. Quark is another professional typesetting software that has become increasingly popular abroad recently. In black-and-white printing, such as black-and-white books and magazines, word and excel can be used as typesetting software to output monochrome films for printing

4. No matter what software is used, the image file resolution used in typesetting must be more than 300 dpi. The pictures used on the station look very clear, but their resolution is generally only 72 DPI or 100 DPI, which cannot be put into printing. DPI refers to the number of points per inch. The higher the number of points, the clearer the picture. If the image resolution used in typesetting is not 300 dpi, it should be forcibly changed to 300 dpi and become the original size. The introduction of the host part of the high-frequency fatigue testing machine determines whether it is clear and usable

5. The mode of color image must be changed to CMYK mode instead of RGB mode. CMYK is a special mode for printing, and RGB is a special mode for displaying images on the display. If RGB is used to output film, color confusion will appear on the film

6. Confirm that there are all necessary files in the document, and the document already contains image files. Sometimes the image appears to be displayed in the typesetting file, but in fact, the image is missing or the resolution is low. Therefore, it is necessary to confirm that the necessary image has been included and ensure that the image has sufficient resolution. In addition, the necessary fonts should be copied in. If some special fonts are replaced, their effect may be affected, and there may be garbled code

7. In the process of document making, black characters are all monochromatic black, without chromatic black or four-color black. This is because if four-color black characters are used, it is very easy to cause inaccurate overprint, which will show other colors in the black characters

8. Conventional size: the size of 16 opening is 210mm x 285mm, and the size of 8 opening is 420mm x 285mm, which is the domestic standard size of 16 opening and 8 opening. In addition, there is an international standard 16 opening size (called A4) of 210mm x 297mm, and the international standard 8 opening size (called A3) of 420mm x 297mm. What we use most is the domestic standard size

9. When output is required after typesetting, 3mm bleeding needs to be set up up up, down, left and right. This is to make allowance for the cutting of printed products. In addition, bleeding should also be set when making up. After making up, you should check whether there are words or drawings with cutting lines, and whether there is enough bleeding left

10. After using illustrator to complete typesetting, you should turn the curve, because all the words after turning the curve will become graphics, and there will be no running words or garbled codes. When using PageMaker to arrange the disk for file copying, it is best to choose the "save as" command, and press the following "link all files" to copy all the linked files to the disk. Generally, it is not recommended to use Photoshop for mixed arrangement of pictures and texts, but only for image processing, because the words in Photoshop will appear jagged and become blurred during printing

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