| 摘要 |
<p>A thermal recording sheet which has high sensitivity in color development, satisfactory background heat resistance, and a satisfactory background color. The sheet contains a dihydroxydiphenyl sulfone compound represented by general formula (1) as a color developer and a sulfonamide represented by general formula (2). In the formula, R1 and R2 each represents C1-8 alkyl, alkenyl, or halogeno; and p and q each is an integer of 0 to 3. In the formula, R3 represents C1-6 alkyl or electron-attracting group; and n is an integer of 0 to 2.</p> |
