The printing term 'bleeding position' is also called 'appoint. Its main role is to protect the finished product cutting, the color of the place in the case of unintentional, do the color completely covered to the place to express.
For example: want a solid circle on the white paper, we cut with scissors, if you according to the edge of the circle, no matter how serious, will be more or less flow down to print black white paper, so cut the black circle with a little white edge, and no matter cut round round, as long as it is a black circle left the white edge will let a person feel not too comfortable. Have what method to ensure that the circle that lets who cut out does not take white edge, actually very simple, be when making this solid circle, the boundary of colour overflow slightly, increase namely. This adds a bit of insurance for not leaving a white edge. In practice, the circle in the example may be the packaging expansion pattern of various shapes, and the black in the example may also be other colors.
What is the fast and unified way? Of course, the standard size of the bleeding site that is now implemented is: 3mm. Increase the 3mm edge along the actual size. This 'edge' is ideal for the natural expansion of the color in size. The unified bleeding position for 3MM has several benefits, 1. Is the manuscript produced, Shanghai printing does not need the designer to go to the printing factory to tell them how to cut.(Of course, the most accurate judgment of the actual shape, is according to the cutting marks in the manuscript.) 2. In the printing house plate printing, the maximum use of the paper size.
Simple overview: as long as the color overflow of the actual size and more than or equal to 3MM.
What does the color overflow mean?
The color overflow mentioned here:
It is the part that artificially exceeds the actual size.
In the vector diagram, the setting of each software is about the same, the general practice is to put the bleeding site out of the page. Here is the example of the most commonly used CorelDRAW:
1. If you want to make a large 16-open sheet with a size of 210X285, then your page setting should be 210X285:
2. Then, the size of your drawing should be: 216X291, put this size in the middle of the page,
The bleeding position is then shown: see ——> bleeding
3. Part beyond the dotted line is the bleeding position, and the finished product is not. So pay attention to it, if you want to measure the upper and lower left and right margins, you can't count the bleeding level.
Source: http://news.naliyin.com/
