The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 1979
Filed:
Jun. 17, 1976
Sydney M Spatz, Circleville, OH (US);
Robert C Hydell, Chillicothe, OH (US);
Gerald T Davis, Chillicothe, OH (US);
The Mead Corporation, Dayton, OH (US);
Abstract
A process is provided for producing a pressure-sensitive carbonless transfer sheet comprising preparing a solution of a first chromogenic material, the solution of the first chromogenic material including at least one chromogenic compound dissolved in a carrier oil, and the first chromogenic material being reactive with a second chromogenic material in the presence of the carrier oil to form a color. The solution of the first chromogenic material is mixed with a liquid radiation curable substance to form a coating composition, the liquid radiation curable substance being curable to a frangible resin and compatible with the color-forming capabilities of said first chromogenic material. A film forming material is applied to a substrate, the film forming material being settable to form a barrier layer which substantially prevents penetration of the substrate by the coating composition upon application of the coating composition to the substrate. The film forming material is then set to form the barrier layer on the substrate, and a film of the coating composition is applied over the barrier layer. The coating composition is then cured by subjecting the coating composition to radiation for a period of time sufficient to cure the coating composition containing the radiation curable substance to a frangible resinous film, the frangible resinous film being cured to a frangibility that will permit passage of the solution of the first chromogenic material to the exposed surface of the frangible resinous film when the frangible resinous film is broken.