Thermosensitive reversible color-developing and disappearing age

Details Thermosensitive reversible color-developing and disappearing age Thermosensitive reversible color-developing and disappearing age

1995-09-13

1997-12-30

McPherson, John A.

Radiation imagery chemistry: process, composition, or product th

Erasable imaging

503201, 503216, 430964, 558 61, 558234, 558235, 558241, 560 13, 560133, 564 23, 564 42, B41M 530

Patent

active

057028508

ABSTRACT:
A thermosensitive reversible color-developing and disappearing agent includes an aromatic compound having at least one group of the formula, --SO.sub.2 NHCXNH--, wherein X.dbd.O or S atom, and at least one straight chain alkyl group with 11 or more carbon atoms, and is reactive with a dye precursor in a thermosensitive recording material to thereby record colored images on the recording material upon heating imagewise, and make the colored images disappear upon heating to a temperature lower than the colored image-forming temperature.

REFERENCES:
patent: 4423116 (1983-12-01), Fox
patent: 5246906 (1993-09-01), Takahashi et al.
Abstract of WO 88/00724, Kuse et al (Jan. 1988).

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