Transfer of catinic dyes in their deprotonated, electrically neu

Details Transfer of catinic dyes in their deprotonated, electrically neu Transfer of catinic dyes in their deprotonated, electrically neu

1987-12-18

1989-11-14

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having plural interactive leaves

8471, 428913, 428914, B41M 5035, B41M 526

Patent

active

048807699

ABSTRACT:
Dyes are transferred from a substrate to an acceptor by sublimation or vaporization of the dye by means of a thermal printing head by using a substrate on which there is situated cationic dyes having a cyanine chromophore and one or more N-H groups which are part of the cyanine chromophore, in their electrically neutral form as the result of deprotonation at the N-H group and transferring these deprotonated dyes to a coated paper.

REFERENCES:
patent: 4057388 (1977-11-01), Defago et al.
patent: 4082713 (1978-04-01), Kelley
patent: 4137042 (1979-01-01), Defago et al.
Wochenblatt fuer Papierfabrikation, vol. 21, pp. 767-776, 1982, Rohmann et al, "Bindemittlesysteme fuer Chemische . . ."
Ullmanns Encyklopaedie der technischen Chemie, 4th Ed., vol. 13, pp. 571-573.
Rev. Prog. Coloration, vol. 5, 1974, pp. 65-74, Mayer et al., "Basic Dyes for Synthetic-Polymer Fibres".
Venkataraman, The Chemistry of Synthetic Dyes, vol. 4, p. 161.

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