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. 18, 2012
Filed:
Sep. 28, 2006
Kai-kong Iu, San Diego, CA (US);
Dennis P Parazak, Oceanside, CA (US);
Dennis Guo, San Diego, CA (US);
Xiaohe Chen, San Diego, CA (US);
Rodney Stramel, San Diego, CA (US);
Howard A. Doumaux, San Diego, CA (US);
Kai-Kong Iu, San Diego, CA (US);
Dennis P Parazak, Oceanside, CA (US);
Dennis Guo, San Diego, CA (US);
Xiaohe Chen, San Diego, CA (US);
Rodney Stramel, San Diego, CA (US);
Howard A. Doumaux, San Diego, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Compositions, systems, and methods for ink-jet printing having improved black to color bleed control, reduced wicking, and/or reduced halo are described. The composition can include a functionalized carbon pigment dispersed in an ink vehicle. The carbon pigment includes functional groups chemically attached thereto. Suitable functional groups includes an aromatic ring structure having multiple carboxyl groups (or salts thereof) attached to the aromatic ring structure, wherein at least two of the multiple carboxyl groups are positioned on adjacent carbon atoms of the aromatic ring structure.