How does a color meter detect color difference in porcelain?
As one of the traditional Chinese handicrafts, porcelain is loved by people for its unique texture and color. However, due to various reasons, there will be color differences between porcelain. Color difference is one of the important indicators to measure the quality of porcelain, so it is very important to detect the color difference of porcelain. Color meter is an instrument used to detect color, widely used in various fields, including porcelain color difference detection. This article will answer the reason of color difference of porcelain in detail, and introduce how to detect color difference of porcelain.
First, the reason for the color difference of porcelain
1. Glaze difference
Glaze is a transparent or translucent glassy thin layer covered on the surface of porcelain, and its composition and thickness directly affect the color of porcelain. Different batches or different materials of glaze may produce color differences.
2. Firing process
The firing process of porcelain also affects its color. Different kilns, firing temperatures, firing times, etc., can cause color differences in porcelain.
3. Lighting conditions
The color of porcelain is affected by the lighting conditions. Different light colors and intensities will make porcelain show different color effects.
4. Viewing Angle and visual error
Viewing Angle and visual errors can also cause color differences in porcelain. Depending on the Angle of view, the color will be different. In addition, the perception of color by the human eye will also cause errors due to fatigue, emotions and other factors.
Second, the color meter detection of porcelain color difference method
A color meter is an instrument based on optical principles that measures the color of an object's surface to reflect its true color. Here are the steps to use a color meter to detect color difference on porcelain:
1. Choose the right color meter
Choose the appropriate color meter according to your needs, such as spectrophotometer, colorimeter, etc. These instruments can measure the intensity of the red, green, and blue colors on the surface of an object to produce color data.
2. Set a standard white light source
Standard white light source is the basis of color measurement. Choose an appropriate standard white light source, such as a D65 light source, to ensure that the measured color matches the standard color.
3. Calibrate the color meter
The color meter needs to be calibrated before the color measurement is performed. This ensures the accuracy of the color meter and reduces measurement errors.
4. Measure the color of the porcelain
The instrument test port fits the area where the color difference needs to be identified to ensure that the color of the area is a solid color, and the area is larger than the size of the instrument test port for measurement.
5. Compare with standard template
The measured color data is compared with the standard template to determine whether there is a color difference. If there is a color difference, it can be assessed according to the degree of color difference.
Conclusion
To sum up, the reasons for the color difference of porcelain mainly include glaze differences, firing processes, lighting conditions, viewing angles and visual errors. Using color meter to detect color difference of porcelain can improve the control and evaluation of porcelain quality. By selecting the appropriate color meter, setting the standard white light source, calibrating the color meter, measuring the color of porcelain and comparing with the standard sample, the color difference of porcelain can be accurately detected. This is of great significance for the daily appreciation of porcelain, the evaluation of the quality of the collection and the control of the production process.
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