Heat-sensitive recorder capable of fixing multi-color formation

Abstract

Abstract PURPOSE:To obtain a fixable heat-sensitive recorder which is highly sensitive and preservable, by providing in at least one of heat sensivie multi-layers fine grain dispersion substances of acid stabilized diazoinium salt, and a specific hydrophobic guanidine derivative. CONSTITUTION:In a coating liquid dispersed with a diazonium salt, a binder of a nonionic high molecular compound, etc., an acid stabilizer, and a coupler compound such as a water soluble aromatic hydroxy compound, a hydrophobic guanidine derivative are added as a color developer, said derivative being shown by any one of formulaI, II (in the formula, R1-R5 show alkyl, aryl, aralkyl, amino, heterocyclic residue, etc., and R6 show low-grade alkylene, phenylene, naphthylene), or formula III (in the formula, X shows lower alkylene, SO2, S2, S, O, -HN-, or single bond). A color forming temperature for each of the heat sensitive layers is variable with different melting points of said guanidine derivative.

Inventors

• 👤 Kenji Yabuta
• 👤 薮田　健次
• 👤 Senji Tosa
• 👤 土佐　宣治

Bibliographic Details