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. 12, 2013
Filed:
Mar. 29, 2012
Rahel Bekru Bogale, Lexington, KY (US);
Susan Hardin Butler, Lexington, KY (US);
Ann P. Holloway, Lexington, KY (US);
Qi Yin, Lexington, KY (US);
Agnes Kam Zimmer, Lexington, KY (US);
Rahel Bekru Bogale, Lexington, KY (US);
Susan Hardin Butler, Lexington, KY (US);
Ann P. Holloway, Lexington, KY (US);
Qi Yin, Lexington, KY (US);
Agnes Kam Zimmer, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
The invention relates to an aqueous cyan inkjet ink composition for use in ink jet printers comprising an aqueous carrier, a self dispersed cyan pigment, a polymeric additive, a surfactant, and a specific cosolvent mixture comprising a C-Cterminal alkanediol, a cyclic amide compound and its derivative, a polyol/polyalkylene oxide condensate, and a trihydric alcohol. Preferably, the self dispersed cyan pigment is surface modified with bisphosphonate group. The cyan inkjet ink demonstrates excellent stability, superior chroma, good printhead maintenance characteristics and high heater reliability in permanent and semi permanent printheads.