Reversible multi-color thermal recording medium

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

B - Operations, Transporting

41

M

B41M 5/34 (2006.01) B41M 5/30 (2006.01) B41M 5/333 (2006.01) G11B 7/24 (2006.01) G11B 7/244 (2006.01)

Patent

CA 2161376

[Object] 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. [Constitution] 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.

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