Since plastic film materials are more flexible than paper, overprinting between color plates is a link that must be considered in the production of gravure front ends. Therefore, it is necessary to know the standard of overprint processing.
1. The text version is usually black, and hollowing is not allowed when overprinting. If the text version is other colors, such as magenta, you can consider whether to overprint with the background color according to the size of the word. When the word is less than 12 pounds, it must be overprinted with the background color, but it still needs to consider whether the color of the text after the color overlay is eye-catching. If it affects the recognition effect, consider changing colors.
2. When the light color and the dark color are connected, generally set the light expansion value to 1 ~ 2PIXS. For larger layouts, the value can be increased appropriately.
3. When the spot color version is connected to the picture, the edge of the spot color version can be expanded without affecting the edge pixels of the picture. The value of the edge expansion is usually 1 ~ 2PIXS.
4. If printing opaque ink, such as gold ink, the printing sequence of the ink should be considered first, otherwise the gold ink will cover the relevant colors. If you have to do overprinting, you should also consider the problem that gold ink and other color inks will become dark and not bright when overprinting.
5. Silver ink is also a special ink. Light silver has certain transparency. Therefore, when using silver ink, it is necessary to determine whether the background color or related color is overprinted or hollowed out through design according to customer requirements.
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