Achieving seamless connection between pre-press, press and post-press requires attention to four elements

When choosing colors, it is necessary to consider the actual reproduction effect of printing, for example, try not to use colors in the purple series. The reason is that the purple color obtained by superimposing the cyan ink and magenta ink in the printing ink is generally "dirty", which is likely to cause quality accidents related to the color.

If you really need to print the ideal purple color, then it is either recommended to use peach ink for overlay or print in a spot color. If the designed product is in the new market experiment stage in the sales process, it is recommended that the customer use the special color to print the main color of the packaging, which can not only improve the brightness of the packaging pattern and color, but also reduce the color of the main color of the packaging once it is the same as the popular color in the packaging market. The risk of slow sales caused by non-compliance (if the main color of the product is printed with a special color, the main color of the packaging can be changed at any time according to market needs during the sales process). In printing graphic design, the resolution setting must be determined according to the requirements of the design and printing process, especially the printing materials used for printing (mostly paper) and other factors. Not all pictures must be adjusted to the highest resolution Rate. For example, the network lines printed in newspapers are lower than those of fine picture albums, and their requirements for the resolution of image files are also different. If you adjust the resolution of the picture on the newspaper printed on newsprint to the same resolution as the picture book printed on the coated paper, it is not only meaningless, but it will cause the printing to smear.

The resolution settings for different objects in printing computer graphic design are as follows:

Generally, color or black and white newspapers printed on newsprint and offset paper are printed with 60-100 lines and a design resolution of 120-200dpi; generally, color pictures printed on offset paper, painted newspapers, coated paper, cardboard, and whiteboards are used, such as book covers. , pictorial, product advertisements, etc., the printing network line is up to 150 lines, and the design resolution is 300dpi; high-end books, exquisite picture albums, and high-end advertising prints are printed on high-grade coated paper, the printing network line can reach more than 175 lines, and the design resolution is 350dpi; Treasure books or special securities, special banknotes, etc., the design resolution can be 400dpi.

4. Typesetting scheme