Prints dot our lives and add brilliant colors to our lives. So what are the characteristics of qualified prints? The popularity of printing is very wide, and there are many problems that need attention. Today I will focus on what colors are the most difficult to print and what elements should be paid attention to when designing.
The first is gray balance. According to the experience of theory and production practice, the most difficult color to control for printed matter is gray balance. Gray balance is that under certain printing suitability, the three primary colors of yellow, magenta, and cyan are overprinted according to a certain dot ratio from light to deep to obtain achromatic colors of different brightness (white, light gray, gray, dark gray, black), that is Obtaining the color of visual neutral gray has many factors that affect it. The amount of ink used in printing, paper, full-page density, dot area, overprinting and screen line number will have inextricable effects on the gray balance. It is the most test of the machine's overprinting accuracy and operator's skill level.
The second is the superposition of several color dots, especially over 70% dots. Specifically, dark brown, brown, dark green (flat screen, containing blue 70), dark blue, and purple-blue are difficult to find balance on the printing machine due to color difference.
What is more difficult to print is the four-color stack of empty words. Too many multi-color lines and thin lines are difficult to print, and the machine's grippers are extremely demanding. This is also a relatively common problem, so before printing, the designer must check the black text in the publication file, especially the small print, whether it is only on the black version, and should not appear on other three-color versions. If it appears, the quality of the finished product will be greatly reduced. When the RGB graphics are converted to CMYK graphics, the black text will definitely become four-color black. Unless otherwise specified, it must be dealt with.
In the final printing, the general version of the thing is full, the spot color is full or the area is large, the reverse text, the same logo, and the same color block, it is generally difficult to follow the color, and it is easy to produce color differences, ghosts, dirty, scratches phenomenon.
In short, qualified prints must meet: 1. Accurate overprinting; 2. Uniform ink color; 3. Full dots; 4. Ink and ink balance; 5. Prints without printing faults, such as rubbing, scratches, pattern, paste, etc .; 6. 3. Strictly loyal to the original. We must pursue high-quality prints to adapt to people's increasing aesthetics.
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