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:
Oct. 18, 2011
Filed:
Apr. 30, 2007
Zin Ur Rehman, Corvallis, OR (US);
Mary E. Austin, Corvallis, OR (US);
Sukanya Rengaswamy, Corvallis, OR (US);
Zin Ur Rehman, Corvallis, OR (US);
Mary E. Austin, Corvallis, OR (US);
Sukanya Rengaswamy, Corvallis, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Ink, ink sets, and methods of printing are provided. The inks can include an aqueous solvent system including from about 5 wt % to about 20 wt % organic co-solvent, from about 2 wt % to about 5 wt % black dye, and a dye selected from cyan, magenta, and yellow dyes. The ink can be formulated such that upon printing on a print medium, the printed ink or inks can maintain a neutral black, defined by a chroma value of less than 7. This neutral black can be maintained such that the printed ink or image has a chroma value of less than 7 for substantially all L* values ranging from about 7 to about 12.