Reversible multi-color thermal recording medium

Details Reversible multi-color thermal recording medium Reversible multi-color thermal recording medium

1995-10-27

1998-01-20

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Plural colors or plural diverse systems

428 644, 428 648, 503201, 503216, B41M 530, B41M 534, B41M 536

Patent

active

057100942

ABSTRACT:
To provide a reversible multi-color thermal recording medium or a reversible multi-color optical recording medium which uses novel urea and thiourea derivatives and has excellent heat resistance.
A reversible multi-color thermal recording medium having an irreversible thermal composition containing a colorless or pale basic achromatic dye and an organic color developer as main components and a reversible thermal composition containing a colorless or pale basic achromatic dye and an organic color developer as main components laminated on a support, the organic color developer contained in the irreversible thermal composition being an irreversible heat-resistant color developer and the organic color developer contained in the reversible thermal composition being a reversible heat-resistant color developer.

REFERENCES:
patent: 4268413 (1981-05-01), Dabisch
patent: 4638340 (1987-01-01), Iiyama et al.
patent: 5168029 (1992-12-01), Igarashi et al.
Patent Abstracts of Japan, vol. 18, No. 383 (M-1640), 19 Jul. 1994 & JP-06-106844 (Toppan Printing Company Ltd.) 19 Apr. 1994.
Patent Abstracts of Japan vol. 18, No. 383 (M-1640), 19 Jul. 1994 & JP-A-06 106849 (Matsushita Electric Indust. Co., Ltd), 19 Apr. 1994.

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