| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a recording material and a recording sheet, which are excellent in dynamic color-development sensitivity, skin heat resistance, and image preservability (heat and humidity resistance, heat resistance, and plasticizer resistance). <P>SOLUTION: The recording material comprises a coloring dye, a compound such as 4'-hydroxy-2-[(4-hydroxyphenyl)sulfanil]acetanilide, which is expressed by formula (1), and an anilide derivative, a sulfonamide derivative or a diphenylsulfone. In formula (1), R<SP>1</SP>and R<SP>2</SP>each represent a hydrogen atom or an alkyl group; a<SP>1</SP>represents an integer of 1-6; n<SP>1</SP>represents an integer of 0, 1 or 2; m<SP>1</SP>represents an integer of 0 or 1-3; R<SP>3</SP>and R<SP>4</SP>each represent a nitro group, a carboxyl group, a halogen atom, an alkyl group, an alkenyl group, an alkoxy group, an alkylcarbonyl group, or an alkoxycarbonyl group; m<SP>2</SP>and m<SP>3</SP>each represent an integer of 0, 1 or 2; and Y<SP>1</SP>represents, CO or NR<SP>5</SP>CO (wherein R<SP>5</SP>represents a hydrogen atom, an alkyl group, a phenyl group or a benzyl group). <P>COPYRIGHT: (C)2007,JPO&INPIT |
