Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Method of use – kit – or combined with marking instrument or...
Patent
1991-05-06
1993-08-17
Schwartz, Pamela R.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Method of use, kit, or combined with marking instrument or...
430200, 503217, 503218, 503226, B41M 530
Patent
active
052368840
ABSTRACT:
Leuco dyes are provided which comprise the coupling product of a N-acyl substituted aromatic amino color developer and a dye-forming coupler moiety substituted at the coupling carbon with a thermally removable leaving group. Thermal imaging systems employing these leuco dyes have the advantage of reduced bubble formation relative to thermal imaging systems employing prior art leuco dyes containing a group which thermally fragments into one or more gases.
REFERENCES:
patent: 3409457 (1968-11-01), Menzel
patent: 4602263 (1986-01-01), Borror et al.
patent: 4720449 (1988-01-01), Borror et al.
Vyas, K., Manohar, H., and Venkatesan, K., J. Phys. Chem., 94(15), 6069-73 (1990).
Stoss, P. and Satzinger, G., Chem. Ber., 111(4), 1453-63 (1978).
Stetter, H. and Jonas, F., Tetrahedron Lett., 22(49), 4945-8 (1981).
Nikishin, G. I., Troyansky, E. I., Svitanko, I. V., and Chizhov, O. S., Tetrahedron Lett., 25(1), 97-8 (1984).
Mannschreck, A. and Dvorak, H., Tetrahedron Lett., (8), 547-50 (1973).
Wachsen, E. and Hartke, K., Chem. Ber., 108(2), 683-92 (1975).
L'Abbe, G., Mathys, G. and Toppet, S., J. Org. Chem. 39(23), 3449-51 (1974).
Boggs Roger A.
Cournoyer Richard L.
Ellis Ernest W.
Russo-Rodriguez Sandra E.
Telfer Stephen J.
Loeschorn Carol A.
Polaroid Corporation
Schwartz Pamela R.
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