Experience five-color printing in person

In fact, today's printing technology can well solve the above problems. People have considered that existing three-primary inks Y , M , and C all contain undesired grays and color shifts to varying degrees, resulting in the fact that the color effects of the existing three-primary inks and black ink printing are still insufficient. To the color range of the original, so people want to use multi-color printing, that is, in the traditional four-color printing, and then print one or more pre-mixed specific color ink to act as a spot color, in order to expect a larger color gamut Range, closer to the original color. The color separation software that offers this solution on the market at present is: Pantone Hexlmage , Agfa Color TunePro , EderMCS and so on. With these color separation software , the colors in the RGB mode of the computer can be converted into five-color, six-color, or even seven-color modes. In this color separation process, almost all colors in the RGB color gamut can be preserved . In common color separation software, if RGB mode color is converted to CMYK mode, 25% or more of RGB color will be lost. Therefore, this kind of color separation software is more and more taken seriously by printing companies.

As an important part of the Hefei Sino-German Print Training Center and the German KBA's printing seminar held in Hefei and the Gaobao Equipment Exhibition, we completed the printing of five-color prints and five colors with the help of technical staff of KBA. Print and four-color printing contrast test.

test   Test   Minute   Analyze

1, we know, CMYK color space is very small, there are many colors in the natural world can not be mixed with four colors of CMYK , such as: fluorescent yellow, pearl blue, metal gold and silver, etc., but we can use a special pigment preparation Spot color inks are used to reproduce these colors, thereby expanding the ink's performance color gamut width and ensuring the color accuracy of printing.

2. The selection of test materials should fully consider the purpose of the contrast color test. Therefore, we use high-white paper and four-color inks with strong coloring and high color purity.