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. 18, 2014
Filed:
Dec. 17, 2009
Michael F. Koenig, Loveland, OH (US);
Michael F. Koenig, Loveland, OH (US);
International Paper Company, Memphis, TN (US);
Abstract
An article in the form of a paper substrate having a first surface and a second surface; an internal paper sizing agent present in an amount sufficient to impart to the paper substrate an HST value of from about 50 to about 250 seconds; one or more optical brightening agents present in an amount below a 'green over' effect excess but sufficient to impart an ISO Brightness value of at least about 92; and a metal salt drying agent mixture of multivalent and monovalent metal drying salts in a molar ratio of multivalent to monovalent cations of from about 3:1 to about 1:18 to provide a percent ink transferred ('IT %') value equal to or less than about 65% and a black print density value of at least about 1.45. Also, a method for treating the optically brightened paper substrate with a mixture of multivalent and monovalent metal drying salts.