Colorless recording paper

Details Colorless recording paper Colorless recording paper

1977-11-09

1981-11-24

Hoffman, James R.

Textiles: manufacturing

3461351, B41M 514

Patent

active

RE0308030

ABSTRACT:
Described herein are transfer and manifolding sheets having upon their surface a coating containing a substantially colorless dye salt derived from an organic sulfinic acid and an arylmethane dye base characterized by a logarithmic dissociation constant below 7, which upon transfer to a suitable receiving sheet is dissociated to the intensely colored ionic form of the dye to furnish a colored print.

REFERENCES:
patent: 2164685 (1939-07-01), Kinyon
patent: 2286169 (1942-06-01), Heckenbleikmer
patent: 2307813 (1943-01-01), Wayne
patent: 2309829 (1943-02-01), Davis et al.
patent: 2332696 (1943-10-01), Champion
patent: 2518249 (1950-08-01), Ott
patent: 2525052 (1950-10-01), Van Der Auwera
patent: 2557924 (1951-06-01), Schaad
patent: 2559351 (1951-07-01), Drake et al.
patent: 2634677 (1953-04-01), Klimkowski
patent: 2646367 (1953-07-01), Davis et al.
patent: 2654673 (1953-10-01), Steinhardt
patent: 2695245 (1954-11-01), Compton
patent: 2755203 (1956-07-01), Stallmann
patent: 2900388 (1959-08-01), Tien
patent: 2927040 (1960-03-01), Davis
patent: 2927041 (1960-03-01), Davis
patent: 2948753 (1960-08-01), Kranz
patent: 2995465 (1961-08-01), Steiger
patent: 2995468 (1961-08-01), Richey
patent: 3096189 (1963-07-01), Kranz et al.
patent: 3193404 (1965-07-01), Davis
Karrer, "Organic Chemistry", 1946, p. 406.
Hinsberg, "Ueber Benzolsulfinsaure als Reagens. II", Berichte der Deutschen Chemischen Gesellschaft, vol. III (1897), pp. 2803-2805.
Hinsberg, "Uber die Reaktion Zwischen Aromatischer Sulfinsaure und Di- und Triphenyl-Carbinol", Berichte der Deutschen Chemischen Gesellschaft, vol. 50, (1917), pp. 468-473.
Beilsteins Handbuch der Organischen Chemie, Vierte Auflage, Dreizehnter Band, 1930, pp. 700 and 704.

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