All aspects of the printing process are very different. Only friends, do not put any questions immediately released, their own ideas, see where the problem is, what's wrong with the production process, you can go to the corresponding design, print website search, and often keep in touch with buyers (printing, plate making companies, spray, card production companies, etc.) to understand the process, technical requirements and Equipment performance and experience are accumulated, not by reading or listening to others, not by contact, so they are always on paper, useless.
1. 在彩图中，如果需要大面积的纯黑色背景，建议使用K:100, C:30。这种黑色印刷比一种颜色的黑色更亮，蓝色版的存在可以弥补黑色版印刷的假孔。当然，这个数字不是固定的。我曾经做过K:100和C:80的海报。这是因为面积太大，印刷机又快，所以很难使色彩立体。还有,如果有一个暖色模式全貌和边缘是羽毛,或有一个温暖的颜色透明度,等等,那么值是根据实际调整主要暖色,如K: 100年,M: 60, Y: 70年,这样的模式转换是很舒服,不像K奇怪:100。你可以通过在PHOTOSHOP中进行实验来观察这种现象。
In the color picture, if you need a large area of pure black background, it is recommended to use K: 100, C: 30. This kind of black printing is brighter than a kind of color black, and the existence of blue plate can make up for the false holes of black plate printing. Of course, this number is not fixed. I used to make K: 100 and C: 80 posters. This is because the area is too large and the printing press is fast, so it is difficult to make the color three-dimensional. In addition, if there is a warm color mode with feathers on the whole and edges, or a warm color transparency, etc., then the value is adjusted according to the actual main warm colors, such as K: 100, M: 60, Y: 70. Such mode conversion is very comfortable, unlike K strange: 100. You can observe this phenomenon by doing experiments in Photoshop.
On a variegated pattern, reverse white characters or thin lines. Select a font (or line point), pay attention not to use the imitation of Song Dynasty, thin circle and other fonts are too thin, try to use bold, official script and other obvious lines, so as to avoid the occurrence of over plate, text or line can not be seen.
3. For making small labels and other items, it is necessary to roll boxes, punch holes and pay attention to matters, and try not to design outer frames. Because, if the layout of the scroll box is shifted, there will be a small side.
4. Attention should be paid to the printing design of magazines, newspapers and offset papers. Both newsprint and tapes should be eaten. Therefore, in addition to the number of grids in films, attention should be paid to reducing the corresponding chromaticity during production. For example, newspapers, you need to see gray level 30. So when I set gray level 24 or so, the actual effect of some gray newsprint is equivalent to 30 gray level. (double) the paper is whiter than the newsprint, and the adjusted color can be lower than that of the normal copper printing and higher than that of the original newspaper.