Computer toning is a kind of high-tech automatic toning process developed in recent years. The computerized paint mixing machine can turn the complex and tedious color mixing work into a fast, simple and accurate color mixing method, which greatly facilitates the color matching of automotive refinishing coatings. It has been widely used in the automotive refinishing coating industry.
(1) Introduction to computer color matching theory
Computer color matching equipment is composed of visible light Spectrophotometer , electronic computer, color matching software, etc.
①Visible light Spectrophotometer is composed of light source, monochromator, integrating sphere, photobridge Detector, data processor and other components . Its function is that the measured spectral reflectance curve of the coating can be used to calculate the tristimulus value of the coating color through Kubelka-Munck color matching theory, and the color can be measured and adjusted by computer color matching software.
②Color matching software The color matching software is composed of color quality testing software, color matching software and other components. The main function is to establish and store the basic color database. When using, first determine the basic color and color masterbatch, and then input the spectral reflectance curve of each color masterbatch (that is, the absorption coefficient and scattering coefficient of different wavelengths), and then perform color matching according to the input data, that is to say, the newly purchased color matching software It does not know how to match colors. You need to input the color number of the paint into the color matching system first, so that the color matching software can use the color number data you input for color matching. Therefore, the accuracy of computer color matching depends not only on the quality of color matching software, but more importantly, whether the input data is accurate and reliable.
(2) Basic principles of computer color grading
In the computer color matching work, the computer is actually a large-scale paint formula database, which can store thousands of standard paint formulas and digital numbers (color numbers) of standard paint colors. Regardless of single-color paint digital or double-color paint digital, it can be input into the computer for the user to color. If you need to adjust a certain color of automobile topcoat, you can first input the color number into the computer, and the topcoat formula and dosage ratio of the color number can be displayed on the fluorescent screen, and then adjust according to this data to obtain the used surface paint. paint color.
(3) Features of computer color grading
The characteristics of using computer color matching are as follows.
Accurate color matching, fast speed and high efficiency save time for car topcoat repair and improve the quality of topcoat repair.
To use computer color mixing, it is necessary to reserve a certain amount of paint formulas and color numbers of various specifications and varieties. If the quantity and variety specifications are insufficient, it will be difficult to accurately match the required paints as required.
The quality of various digital paints purchased needs to be strictly guaranteed. If the quality is not good, the computer will definitely not be able to adjust the desired color.
The storage and placement of single-color paints should be placed according to the rules of color numbers to make them standardized and customized to prevent mistakes. Paints without standard color numbers are not suitable for computer color mixing.
