Thermal recording material
AssigneeNippon Paper Industries Co., Ltd.
InventorsYoshimi Midorikawa, Naomi Sumikawa, Kaoru Hamada, Yoshihide Kimura
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Abstract
A thermal recording material which has high sensitivity in color development and a high whiteness of the background and is excellent in image retention and heat resistance. The thermal recording material contains a dihydroxydiphenylsulfon compound represented by general formula (1) as an organic color developer and 3-di-n-pentylamino-6-methyl-7-anilinofluoran as a colorless basic dye. (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.)
Claims5
A thermal recording material that possesses a thermally sensitive color developing layer containing colorless or pale colored basic colorless dye and organic color developing agent as main components on a substrate, wherein said thermally sensitive recording layer contains at least one kind of dihydroxydiphenylsulfone type compound represented by general formula (1) as the organic color developing agent, and consists of 3-di-n-pentylamino-6-methyl-7-anilinofluoran as the basic colorless dye.
- wherein, R1 and R2 indicate an alkyl group or an alkenyl group of carbon number 1 to 8, or a halogen atom and p and q is an integer number of 0 to 3.
Dependencies are inferred from the claim text.