Heat-sensitive recording paper improved in keeping quality of gr

Details Heat-sensitive recording paper improved in keeping quality of gr Heat-sensitive recording paper improved in keeping quality of gr

1979-09-13

1981-05-05

Hess, Bruce H.

Stock material or miscellaneous articles

Composite

Of carbohydrate

8116R, 8125, 282 275, 427151, 427153, 428409, 428913, B41M 518

Patent

active

042659787

ABSTRACT:
A heat-sensitive recording paper in which a necessary heat-sensitive image-forming layer is provided on a neutral or alkaline paper prepared by practising the sizing process by the use of a combination of anionic sizing agent and cationic fixing agent, a combination of reactive sizing agent and neutral fixing agent or a self-fixable cationic sizing agent is improved in the keeping quality of ground color so that the ground is protected against coloration for a long period of time even at high temperature at high humidity or at high temperature, which enables to use 3-pyrrolidino-6-methyl-7-anilinofluoran or 3-N-methylcyclohexylamino-6-methyl-7-anilinofluoran as a color-forming agent in combination with Bisphenol A as an acidic color-developing agent.

REFERENCES:
patent: 3773542 (1973-11-01), Hayashi et al.
patent: 3852093 (1974-12-01), O'Leary
patent: 4111461 (1978-09-01), Leuensalor

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