Heat-sensitive recording unit

Details Heat-sensitive recording unit Heat-sensitive recording unit

B - Operations, Transporting

41

M

42/3

B41M 5/18 (1985.01)

Patent

CA 1215834

- 44 - ABSTRACT A heat-sensitive recording unit formed by supporting a methine-type chromogenic reactant and oxidizing organic compound on a base. A color production sensitivity regulator may further be supported on the base. It is also feasible to add a quaternary ammonium salt, tertiary alkanol amine or water-soluble ion sequestering agent for avoiding undesirable color production of the methine-type chromogenic reactant. The ammonium salt, amine or ion sequestering agent may be added upon forming the methine-type chromogenic reactant into an aqueous suspension in order support the methine-type chromogenic reactant on the base.

436863

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