退色に対する染色堅牢度の視感評価と計測評価との関係

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  • <Original>Relationship between visual assessment and instrumental assessment of the change in depth of colour in colour fastness tests
  • タイショク ニ タイスル センショク ケンロウドシカン ヒョウカ ト ケイソク ヒョウカ ト ノ カンケイ

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抄録

Colourists visually judge the colour contrast between treated and untreated fabric against the contrasts of the grey scale. A result by the traditional method based on visual assessment varies from observer to observer. In this study, visual assessment was performed by assessing colour depth change of samples prepared systematically. In contrast, instrumental assessment was performed by using 17 formulae. The relationship between visual assessment and instrumental assessment was compared, with following findings. 1. The correlation coefficient between visual assessment and instrumental assessment was improved by using colour fastness formulae rather than colour difference formulae. 2. The correlation coefficient was especially high when using Nc# value and SEK grade. 3. The correlation coefficient between visual and instrumental assessment was high for each colour point except a very pale tone. 4. The correlation coefficient was not good for a very pale tone. 5. The correlation coefficient was good for Purple, but yellow was not good. Green was bad, except for the SEK grade and the ISO grade. 6. In the case of change in depth of colour, the instrumental assessment according the colour fastness formulae was much better, and in the case of change in colour the instrumental assessment according the colour difference formulae was better.

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  • 研究紀要

    研究紀要 (9), 1-8, 2001-12-25

    奈良佐保短期大学

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