Heat sensitive recording sheet

Details Heat sensitive recording sheet Heat sensitive recording sheet

1980-08-14

1982-01-26

Hess, Bruce H.

Textiles: manufacturing

427150, 427151, 427152, 428411, 428488, 428537, 428913, 428914, 430348, B41M 518, B41M 522

Patent

active

043125220

ABSTRACT:
This invention discloses a heat sensitive recording sheet which contains, as a developer, at least one of the compounds represented by the general formula ##STR1## where R represents hydrogen, an alkyl radical of from 1 to 12 carbon atoms, a cycloalkyl radical of from 3 to 10 carbon atoms, an aralkyl radical of from 7 to 10 carbon atoms, and a phenyl radical, and may be identical to or different from each other, n is zero, or an integer of 1 or 2.
The heat sensitive recording sheet of this invention has a sharper rise in developed color density and is advantageous for its handling and storage as well as gives a developed color image having an excellent fastness to light and water resistance in addition to very little decrease in density of the developed color image with time.

REFERENCES:
patent: 3244550 (1966-04-01), Farnham et al.
patent: 3843383 (1974-10-01), Ishige et al.
patent: 3937864 (1976-02-01), Kohmura et al.

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