Color difference meter common problems and solutions - Database & Sql Blog Articles

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Common problems with colorimeter

1. A customer provides a set of color coordinates to the manufacturer. No standard samples are provided. In this case, it must be made clear that the color coordinates provided by the customer are measured in that color space, as well as the lighting conditions, the type of light source, and the different colors. In the coordinate space, the measured values ​​differ greatly, and there is no comparability. Under the same color space, the lighting conditions are different, and the chromaticity coordinates are also relatively different, but the color difference is relatively small.

Recommendation: Let customers provide standard samples, use standard samples to communicate with users, and use standard samples as benchmarks to control chromatic aberration.

2, the above examples are the standard space of CIE1976, ADCI-60-C series provides a variety of color coordinate space, must determine the color coordinate space of the current instrument according to the user's color coordinate space.

3. All instruments, including the spectrometers of the spectrometer, use the standard whiteboard as the benchmark to adjust the instrument. When the instrument is used for a period of time, the instrument must be recalibrated with a standard whiteboard to achieve the highest measurement accuracy.

Detecting the colorimeter

First: measurement of color correction

When the user gets a sample, it needs to reproduce the same color as the sample. At this time, it is necessary to repeatedly proof the sample. Previously, the difference between the sample and the standard sample was compared by the human eye. When it is within the allowable range, The process is handed over to the workshop for production. Due to the subjective factors of the human eye, this difference is difficult to determine. At this time, the difference between the sample and the standard sample can be measured by a color difference meter, and the color difference of the sample is determined according to the difference, so that Can reduce the uncertainty of human eye observations. The biggest advantage of using color difference meter to participate in color grading is that it can correct the formula according to the data provided by the color difference meter and refer to the chromaticity diagram, which can complete the color matching task more quickly and accurately. An example if the color coordinates of the standard sample are

L*=74.40, a*=1.67, b*=23.80

Use the <standard> setting function of ADCI-60-C to set the measured value of the standard sample to the standard, and then measure the sample to obtain the result of the sample.

L*=74.39, a*=0.67, b*=20.30; dL*=0.01, da*=1.0, db*=1.50

Refer to the color chart below

It can be seen that the next time you modify the sample formula, you should add green (or red), add blue (or reduce yellow), you can determine the degree of addition according to the test results, repeat several times until the color difference is within the allowable range. Inside, experienced users can determine the proportion of the formula between 2-3 times based on the value of the colorimeter.

Second: the role of colorimeter in quality control

When the formula is determined, it is put into production. Due to the change of many factors in the production, the color deviation of the batch products may occur. Therefore, the color deviation should be measured frequently in the production to adjust the production process to achieve the consistent color of the product. Sex.

Third: the volume transmission aspect

Today's customers generally provide color cards or samples, so when you sign a contract with the user, try to save the physical object as a standard.

The high-end instruments are also biased according to the actual environment. The national color standards are based on standard whiteboards and swatches, not on the basis of instruments.

The above are the common problems and solutions of the color difference meter; if you encounter the fault in the instrument hardware, whether it is the warranty period or the warranty period or the warranty, please contact our company; our company will serve you wholeheartedly;