Most popular ink inspection terms

2022-07-28
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Ink inspection terms (I)

the process of distinguishing various properties of ink by physical or chemical methods

1 color, color light acting on human eyes causes visual characteristics other than image. a. A visual phenomenon or characteristic of visible radiation that can be used by an observer to distinguish the difference between two fields of view with the same size, shape, and structure. b. The characteristic of light stimulation that produces the above sensations. For example: red light, white light, etc. c. The characteristics of an object that can cause light stimulation. For example, the red of red paper, the black of black cloth, etc

2 colors refer to various colors except achromatic, which have different hues, brightness and saturation

3 achromatic colors refer to a series of neutral grays from white to black, with only the difference in brightness and no characteristics of hue and saturation. When the reflectance of the object to the light wave of the visible spectrum is more than 80%, it will appear white, and when it is less than 4%, it will appear black. Between the two, it is a gray with various brightness. 4 Munsell color system is a systematic method of color classification and calibration, which uses the three-dimensional model to represent the brightness, hue and saturation of the object surface

5 hue (hue) hue indicates red, yellow, green, blue, purple and other color characteristics. One of the three properties of color

6 saturation refers to the degree of purity of hue. The purer the color, the more colorful the human feeling

7 lightness a. b. A measure of the visual characteristics of an object surface under the same lighting conditions, using a whiteboard as a reference. One of the three properties of color

8 CIE color system CIE color system is the theory and method used by the international lighting commission to express and measure color systems

9 tristimulus values the amount of three primary stimuli required to achieve color matching with the light to be measured in the trichromatic system

10 chroma is a measure of the color intensity of an object surface expressed by the visual characteristics of distance equilightness achromatic dots. One of the three properties of color

11 chromaticity refers to the comprehensive quantity of hue and saturation. Therefore, lightness is not considered when color is described by chromaticity

12 chromaticity coordinates refer to the relative proportion of the stimulus amount of color reflected (transparent) light in the total stimulus amount of red, green and blue primary light, which is mostly expressed in X, y and Z. 13 color difference refers to the difference between two colors, expressed in △ E

13.1 colorimeter is a colorimeter that uses the standard light source illumination inside the instrument to measure the photoelectric integration of reflected color (or transmitted color). It can directly measure the three stimulus values x, y, Z, chromaticity coordinates x, y, Z, coordinate values l*, a *, b* and total color difference △ e of the object color

14 reflection densitometer is an instrument with standard light source and changeable red, green and blue primary color filters to measure the density value of three or four-color ink samples. The intensity, color deviation, gray scale and efficiency of the measured ink color can be calculated by formula as the evaluation of ink color quality

15 hue error, also known as hue error, refers to the deviation between the ink color and the ideal three primary colors measured and calculated by the reflection densitometer

16 grayscale grayness refers to the ratio of the low density value and the high density value measured by the reflection densitometer of the ink color sample, which is used to indicate the relative purity of the ink color

17 efficiency refers to the color efficiency of ink used in three-color or four-color printing measured by the reflection densitometer

18 color strength refers to the maximum density measured by the reflection densimeter of the ink color sample, which is used to evaluate the range and depth of the color produced by the ink overprint

19 primary color the specific color used in the color matching experiment. Generally, three primary colors are used. Any one of the three primary colors cannot be added and mixed by the other two primary colors

20 three primary colors China continues to innovate in the field of advanced extrusion technology. The transportation industry is one of the largest markets for thermoplastic materials. In the ink industry, yellow, magenta and cyan with a certain range of main wavelengths are called three primary colors

20.1 secondary color refers to the intermediate color formed by mixing any two of the three primary colors

BASF, Huntsman, Bayer and other international chemical giants have increased their efforts to expand the Chinese market

22 complementary color any two colors guide the industry to develop faster and better. Colors that can become achromatic are called complementary colors

23 toptone refers to the color displayed by the thin layer of ink scraped on the scraping paper

24 background color undertone refers to the color displayed on the scraping paper with a thin layer of ink under the light perspective

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