Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Identified solvent or dispersant for color-former – other...
Patent
1992-12-02
1994-06-07
Hess, B. Hamilton
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Identified solvent or dispersant for color-former, other...
503215, B41M 5165
Patent
active
053189400
ABSTRACT:
A remarkably low odor carbonless paper solvent is provided comprising a mixture of diisopropylbiphenyl and triisopropylbiphenyl, generally in an amount of 50 to 90% by weight diisopropylbiphenyl and 10 to 40% by weight triisopropylbiphenyl. The solvent and a chromogenic substance such as a leuco dye are encapsulated to form microcapsules which are coated onto one surface of a carrier sheet. A color developing substance is then applied to another sheet to form a carbonless marking system. When the microcapsules are ruptured, the solubilized chromogenic substance contacts and reacts with the developer to form an image.
REFERENCES:
patent: 3627581 (1971-12-01), Phillips
patent: 4287074 (1981-09-01), Earhart et al.
patent: 4699658 (1987-10-01), Okada et al.
patent: 4699659 (1987-10-01), Okada et al.
patent: 4774136 (1988-09-01), Okada et al.
patent: 4795493 (1989-01-01), Okada et al.
patent: 4822767 (1989-04-01), Okada et al.
Earhart Harold W.
Hahn Gregory R.
Osman Ronald W.
Hess B. Hamilton
Koch Industries, Inc.
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