Method of determining colour tone of glitter-containing coating

摘要: Light reflected from a sample coating containing glitter is measured by detectors 12, 14, 16 in three directions that are angularly spaced angles of about 15 DEG , 45 and 75 or 110 the direction regular reflection illuminating light toward which applied. Colour differences then determined lights known values reference colour tones, one tones whose difference minimum determined. Flop with respect to lightness, saturation, hue lights, tone based on between flop characteristics tones.