GB/T 4739-2015Test method for measuring the colorimetry of ceramic pigment (English PDF)

1 Scope

This standard specifies the method for determination of measurement conditions and ceramic pigment chroma.

This standard applies to ceramic pigment (hereinafter referred to as ceramic pigment), does not apply to ceramics containing a fluorescent substance and with a metallic luster pigment.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 3977 color representation

GB/T 3978 standard lighting and geometric conditions

Methods of measurement GB/T 3979 object colors

GB/T 5000 General Ceramics Terminology

GB/T 5698 color terms

GB/T 9086 for standard white color and photometry

3 Terms and Definitions

Terms and definitions GB/T 5000 and GB/T 5698 defined apply to this document.

Principle 4 4.1 according to the standard GB/T 3977, GB/T 3978, GB/T 3979 regulations, the use of the International Commission on Illumination (CIE) D65 standard illuminant,

Under the 1964 supplementary standard colorimetric system conditions, the use of instruments to measure the ceramic pigment sample tristimulus values X10, Y10, Z10, and the use of CIE 1976 (L * a * b *) color space, the lightness index L * and the chromaticity indices a *, b * values represent color.

Under the conditions specified in 4.2 standard, based on the measured tristimulus values, color-difference formula two is the color difference between the test sample deltaE.

5 Instruments