衣服のスポット汚れの視覚的評価に関する研究（第2報）:スポット汚れの大きさによる評価の差異

摘要

In our previous report (Part l), an investigation on spotted stains on clothes was made in respect of color, which seems as the most important factor involved in discard of old clothes. The results indicted that stains were conspicuous especially on blue colored clothes with high brightness. In this study, several stain models which include wide range of colors and sizes are prepared as test samples. And how their relations are affected on conspicuousness each other is investigated. Seven-rating evaluation was made in the respect of conspicuousness of stain using a textile chart, which was consisted of 5 different colored clothes (red, blue, white, gray and black) with 5 different sized model stains of red, yellow, green, blue and black color. Moreover, a questionnaire survey was made of correlation between those stains and discard of clothes. The results were subjected to an analysis by Quantification theory I. Thus, it was demonstrated that the size and color of stains on clothes were both significantly correlated with conspicuousness of stain and black-colored stain was most inconspicuous among tested stains. Regarding the discard of old clothes, it was suggested that clothes with red or green-colored stains would be most easily discarded, whereas those with black-colored stains would be most uneasily done.%衣服の廃棄の原因として最も多いスポット汚れを取り上げ，第1報では実際の汚れと布地の色彩要因と汚れの目立ち感との関係を検討した．その結果，明度が高い青系の布地の汚れが目立ちやすいという結果を得た．本報では，幅広い色と大きさの汚れモデルを作成し，それらの要因が目立ち感に与える影響を調べた．実験は，赤，青，白，グレー，黒の布地に，赤・黄・緑・青・黒の5色のアクリルカラーを5段階の大きさで付着させたテキスタイルチャートを用いて，汚れの目立ち感を7段階で評価させた．また，それらの汚れが廃棄に繋がるかについても，併せて調査を行った．得られたデータを用いて数量化Ⅰ類を行った結果，汚れの目立ちには汚れの大きさと色が影響を与えており，汚れの色では黒が目立ちにくいという結果が得られた．また，廃棄との関連については，汚れの色では赤や緑の場合に廃棄される割合が高く，黒の場合には廃棄されにくいことが明らかになった．