| 摘要 |
PURPOSE:To provide excellent whiteness to a titled element even after a high- temp. heating stage and to permit thermal transfer with decreased stains by incorporating a specific brightening agent into said element. CONSTITUTION:The brightening agent expressed by the formula is incorporated into the image receiving element for thermal transfer. In the formula, R1 and R2 respectively denote a hydrogen atom, alkyl group of 1-15C or aryl group of 1-10C, R3-R10 respectively denote a hydrogen atom, alkyl group of 1-20C, cycloalkyl group, alkoxy group or alkoxy carbonyl group. Generation of stains by the decomposition, etc., of the brightening agent even after the high-temp. heating stage is thereby decreased and the whiteness as a background is improved. |
