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:
Sep. 04, 2012
Filed:
Dec. 21, 2006
Robert Paul Held, Newark, DE (US);
C. Chad Roberts, Wilmington, DE (US);
Gregory R. Schulz, Mt. Pleasant, SC (US);
Robert Paul Held, Newark, DE (US);
C. Chad Roberts, Wilmington, DE (US);
Gregory R. Schulz, Mt. Pleasant, SC (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The present invention pertains to a black inkjet ink comprising aqueous vehicle and carbon black pigment stabilized to dispersion by a certain block copolymer dispersant. The invention further pertains to an ink set comprising this black ink and at least a second ink which contains a reactive species capable of destabilizing the carbon black dispersion. Still further, the invention pertains to a method of printing wherein the black ink and second ink are printed in an overlapping relationship, thereby minimizing penetration, feathering and/or bleed of the black pigment and improving print quality.