Heat-sensitive recording material having image-stabilization pro

Details Heat-sensitive recording material having image-stabilization pro Heat-sensitive recording material having image-stabilization pro

1996-02-08

1997-06-10

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Having nonchromogenic liquid spread-control or...

430338, 430567, 430609, 430619, 430945, 503202, 503210, B41M 532

Patent

active

056375506

ABSTRACT:
A heat-sensitive recording material suited for use in direct thermal imaging and having image-stabilization properties which material contains in a binder on a support (i) a substantially light-insensitive organic silver salt capable of thermally activated reduction to silver in thermal working relationship with (ii) at least one reducing agent capable of reducing the substantially light-insensitive organic silver salt when thermally activated, characterized in that the recording material contains in conjunction, preferably in admixture, with the reducing agent(s) at least one colourless photo-oxidizing substance that on exposure to ultraviolet (UV) radiation, such as present in daylight or artificial lighting, yields free radicals capable of inactivating said reducing agent(s) by oxidation, thereby rendering said reducing agent(s) incapable of reducing said organic silver salt to silver.

REFERENCES:
patent: 3094417 (1963-06-01), Workman
patent: 3094619 (1963-06-01), Grant
patent: 3218166 (1965-11-01), Reitter
patent: 3526506 (1970-09-01), Workman
patent: 5514636 (1996-05-01), Takeuchi

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