Multi-color thermosensitive recording material

Recorders – Record receiver deforming

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Details

346201, 346205, 346226, 427152, B41M 518

Patent

active

046654100

ABSTRACT:
A multi-color thermosensitive recording material comprising a support material, three or more thermosensitive coloring layer successively overlaid thereon and decolorizing intermediate layers interposed between the thermosensitive coloring layers, with at least the thermosensitive coloring layers except the thermosensitive coloring layer adjacent to the support material each comprising a basic leuco dye and a color developer capable of inducing color formation in the leuco dye upon application of thermal energy at a predetermined temperature, and each decolorizing intermediate layer containing a decolorizing agent which is capable of decolorizing the color developed in the thermosensitive coloring layer adjacent to the decolorizing intermediate layer when heated to a higher temperature than the predetermined coloring temperature for the thermosensitive coloring layer, which decolorizing agent for use in at least one of the decolorizing layers is (i) a N,N'-disubstituted aromatic diamide compound, (ii) a piperazine compound having at least two amido groups or (iii) a combination of the two compounds.

REFERENCES:
patent: 4020232 (1977-04-01), Kohmura et al.
patent: 4125636 (1978-11-01), Kamio et al.
patent: 4172727 (1979-10-01), Miyamoto et al.

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