Color Measurement in Printing Industry

At present, in the printing industry, people have developed great interest in measuring with a colorimeter or a spectrophotometer. Since practice has proven that density measurement is important, for the printing industry, only density measurement is not enough. In the past, density measurement has been the most commonly used form of measurement in the printing industry due to the limitations of measuring instruments. Now it is different, with the gradual promotion of new measuring instruments, people have begun to turn their attention to color measurement technology. Colorimetry has been applied to the control of printing processes, such as the control of ink layer thickness.

In the printing industry, the study of colorimetry is useful for understanding color processing, products, and instrument design. Chromaticity measurement has some obvious advantages.

At present, the application of colorimetric measurement in the printing industry is mainly in the following areas:

1 The quality control of raw materials, especially the control of ink and paper, has become routine in some printing plants. Spectrophotometric data is valuable for measuring whiteness of paper;

2 to develop precise specifications for ink and paper standards;

3 Analytical measurement of gray balance, best tone reproduction, and color correction for different inks, paper, and printing conditions;

4 Analyze the match between the color of the proofing sheet and the printing paper, and analyze the colorimetric characteristics of the pigment used in the pre-proofing process;

5 analysis of a set of ink reproduction of the color gamut and each set of ink reproduction gamut;

6 analysis of the relationship between the original and the copied image;

7Using color measurement specifications to increase the degree of standardized production to achieve the purpose of saving material, reducing errors, and improving product quality;

8 Print color quality control;

9 analysis of the composition of the pigment matching the spot color;

Precise color correction on the color separation device and color reproduction on the press.

In the printing industry, colorimetric measurement is an extension of the eye's function, but it will never replace the eye, because only the eye has a subjective evaluation function. But the instrument can produce quantified data that can be placed in any accessible location, such as on a press.

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