How to set the album printing design before bleeding is correct

The bleeding that we often say is the printing term 'bleeding bit', also known as 'out point'. Its role is mainly to protect finished products from cutting, where there is color in the unintended circumstances, so that the color completely covers the place to be expressed.

For example: if you want a solid circle printed on white paper, you cut it with scissors. If everyone cuts it by the edge of the circle, no matter how serious it is, it will flow more or less without a black print. Cut out the black circle with a little white edge, and regardless of whether the circle is not round, as long as it is left behind on the black circle will make people feel not too comfortable. Is there any way to ensure that the circle that is cut out by anyone does not have white borders? It is actually very simple. When making this solid circle, the boundary of the color is slightly spilled, that is, it is enlarged. This adds one point of insurance for leaving no white edges. In practice, the circles in the example may be various shapes of the packaging unfolding pattern. The black color in the example may also be other colors. What is a quick and unified method? Of course, the standard size of the current hemorrhage is: 3mm. It is an increase of 3mm along the actual size of the edge. Natural expansion of this 'edge' within the size is ideal. There are several advantages to having a hemorrhage position of 3MM: 1. It is the manuscript that is produced. The designer does not have to go to the printing plant to tell them how to cut it (of course, the most accurate judgment of the actual shape is based on the cutting marks in the manuscript). 2. It is the use size of the paper that is used to the maximum in the imposition of printing in the printing factory.
Usually we need to pay attention to complete the design of the design of the printed document must be added after the design of the bleeding line, how to set the bleeding, mainly to consider the binding after printing and the layout of the way. The general product catalog uses saddle stitching. For a single page, there are three sides of bleeding, and the left and right pages have different bleeding directions. Therefore, the page should be added with bleeding. In general, when the page design is used, 3mm is added to the upper and lower pages of the page and the middle is not added. The same applies to thicker books and magazines such as sewing. If paperback correction is used for a single page with four sides bleeding, it is more difficult to deal with bleeding across the page with the cross-page pattern in the middle. Therefore, bleeding is generally not provided. When you make a manual layout, you must first split the page into a single page file, which is generally packaged into an EPS file (also available as a PDF file). Bleeding on three sides does not add to the bleeding; on the other hand, bleeding on the four sides of the package can add bleeding. The single-page file generated at this time naturally removes out-of-page or out-of-bleed portions, and automatically separates the cross-page pattern text.

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