MISCIBILITY OF CERAMIC PIGMENTS IN THE CIE L*a*b* COLOUR SYSTEM

摘要

The colour of every ceramic pigment consists of basic colours. It is possible to determine derivative colours by giving a proportion of basic component ones. Correction of the colour consists in the change of basic colour share in the mixture.In the case of ceramic pigments, the change of colour doesn't concern one basic colour only. All three basic colours are inserted together with pigment and additionally black one in the CMYK (Cyan, Magenta, Yellow, blacK).In this paper, the relationships resulting from a passage from the CMYK colour system into the CIE L*a*b* colour system, applied in practice of ceramic works, were presented.Getting to know these relationships enables prediction of the colours, obtained as a result of ceramic pigments mixing. It also enables optimization of the pigment selection, determination of the pigment basis and a number of colours obtained on its basis in the applied carriers (glazes, fluxes, mass and the like).