2色感熱記録材料

Two-color thermal recording material

Abstract

PROBLEM TO BE SOLVED: To provide a two-color thermal recording material having only a little fog. SOLUTION: This color adding type two-color thermal recording material comprises, on a support body, a high temperature coloring layer which contains a coloring dye which colors into black color and a low temperature coloring layer which colors into a color different from that of the high temperature coloring layer. In between the high temperature coloring layer and the low temperature coloring layer, an intermediate layer having, as a main component, a pigment having an oil absorption regulated by JIS-K5101 of 50-400ml/100g is provided. The low temperature coloring layer contains at least one kind to be selected from among 3-diethyl amino-7-chlorofluoran, 3-cyclohexylamino-6- chlorofluoran, 3, 3'-bis (1-n-butyl-2-methylindole-3-yl) phthalide, 3-(4-diethyl- amino-2-methylphenyl)-3-(4-dimethylaminophenyl)-6-dimethylamino phthalide.
(57)【要約】 【課題】地肌かぶりの少ない2色感熱記録材料を提供す る。 【解決手段】支持体上に黒色に発色する発色性染料を含 有する高温発色層と高温発色層とは異なる色に発色する 低温発色層を順次積層してなる加色型2色感熱記録材料 において、JIS−K5101に規定される吸油量が5 0ml/100g以上400ml/100g以下の顔料 を主成分とする中間層を該高温発色層と該低温発色層の 間に設け、かつ該低温発色層に3−ジエチルアミノ−7 −クロロフルオラン、3−シクロヘキシルアミノ−6− クロロフルオラン、3、3’−ビス(1−n−ブチル− 2−メチルインドール−3−イル)フタリド、3−(4 −ジエチルアミノ−2−メチルフェニル)−3−(4− ジメチルアミノフェニル)−6−ジメチルアミノフタリ ド等から選ばれる少なくとも1種を含有する。

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    JP-2006289929-AOctober 26, 2006Oji Paper Co Ltd, 王子製紙株式会社Multicolor heat-sensitive recording element