In packaging printing, the color effect of printed matter has a very important influence on product packaging. It not only enhances the grade of product packaging, but also attracts consumers and enhances users' desire to purchase.
However, in packaging and printing, sometimes the printing factory and the customer agree to the satisfactory printing color. When printing on the specific product packaging, the color is deviated, sometimes the difference is still relatively large, so that the product packaging is not satisfactory, which is the end. Wrong? Check the printing equipment, materials and operating technology, etc., no abnormalities.
In fact, this is a meta-spectral phenomenon in color science. It can be seen that the phenomenon of metamerism has a great influence on packaging printing. Therefore, it is necessary to fully understand the principle and control method of this phenomenon to avoid this color difference phenomenon. The loss caused by packaging and printing manufacturers.
Color metamerism and production principle
Each object has its fixed optical properties, that is, which color light it absorbs, and which properties of the reflected light are fixed. The color of each object is fixed in a full spectrum of daylight. The so-called intrinsic color is the same as the optical properties of the object and the color that appears in daylight.
However, when the spectral composition of the light source changes, the monochromatic light of a certain wavelength range is absent in the light source, and the color light of this wavelength range is the color light reflected by the optical characteristics of an object, then the object is in this kind Under the light source, it does not show its inherent color, but presents a different color.
This kind of color is the same when a pair of colors is displayed under a certain light source, but under another light source, the color of the display changes. This phenomenon is called metamerism.
In this change, the spectral data of the object itself is unchanged, that is, the spectral data is the surface property of the color object, and the change of the illuminating body is different from that of the observer. The copying method has no effect, and the object color and reflection (transmission) The spectral power distribution of light is related, but not one-to-one correspondence. Therefore, many light energy with different spectral distributions cause the same color perception of the human eye (ie, color mixed metamerism).
In color printing, the three primary colors YMC are usually used to simulate and reproduce various colors in nature, but for the human eye, the most sensible is RGB color light, that is, the human eye recognizes the color by the principle of additive color. Therefore, for the human eye, the color light and the color material are equivalent, which produces a metamerism phenomenon, which is mainly caused by the low resolution of the human eye.
In packaging printing, the color effect of printed matter has a very important influence on product packaging. It not only enhances the grade of product packaging, but also attracts consumers and enhances users' desire to purchase.
However, in packaging and printing, sometimes the printing factory and the customer agree to the satisfactory printing color. When printing on the specific product packaging, the color is deviated, sometimes the difference is still relatively large, so that the product packaging is not satisfactory, which is the end. Wrong? Check the printing equipment, materials and operating technology, etc., no abnormalities.
In fact, this is a meta-spectral phenomenon in color science. It can be seen that the phenomenon of metamerism has a great influence on packaging printing. Therefore, it is necessary to fully understand the principle and control method of this phenomenon to avoid this color difference phenomenon. The loss caused by packaging and printing manufacturers.
Color metamerism and production principle
Each object has its fixed optical properties, that is, which color light it absorbs, and which properties of the reflected light are fixed. The color of each object is fixed in a full spectrum of daylight. The so-called intrinsic color is the same as the optical properties of the object and the color that appears in daylight.
However, when the spectral composition of the light source changes, the monochromatic light of a certain wavelength range is absent in the light source, and the color light of this wavelength range is the color light reflected by the optical characteristics of an object, then the object is in this kind Under the light source, it does not show its inherent color, but presents a different color.
This kind of color is the same when a pair of colors is displayed under a certain light source, but under another light source, the color of the display changes. This phenomenon is called metamerism.
In this change, the spectral data of the object itself is unchanged, that is, the spectral data is the surface property of the color object, and the change of the illuminating body is different from that of the observer. The copying method has no effect, and the object color and reflection (transmission) The spectral power distribution of light is related, but not one-to-one correspondence. Therefore, many light energy with different spectral distributions cause the same color perception of the human eye (ie, color mixed metamerism).
In color printing, the three primary colors YMC are usually used to simulate and reproduce various colors in nature, but for the human eye, the most sensible is RGB color light, that is, the human eye recognizes the color by the principle of additive color. Therefore, for the human eye, the color light and the color material are equivalent, which produces a metamerism phenomenon, which is mainly caused by the low resolution of the human eye.
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