Thermographic recording system

Details Thermographic recording system Thermographic recording system

1976-04-13

1977-12-06

Gwinnell, Harry J.

Stock material or miscellaneous articles

Composite

Of carbohydrate

427 56, 427395, 427444, 428913, B32B 2900, B05D 302

Patent

active

040618366

ABSTRACT:
Thermorecording sheet, thermorecording method and method of manufacture of a thermally responsive recording paper comprising a reversibly reduced cyclic polyketo compound, such as hydrindantin and an N,N' polythiodiamine having a sulfur chain length of at least two sulfur atoms.

REFERENCES:
patent: 1880449 (1932-10-01), Hickman et al.
patent: 2999035 (1961-09-01), Sahler
patent: 3024362 (1962-03-01), Sus et al.
patent: 3394185 (1968-07-01), Clemens
patent: 3736166 (1973-05-01), Lawton
Galloway et al., Chem. Abs., vol. 46, No. 9469c (1952).

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