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:
Jan. 29, 2013
Filed:
Dec. 14, 2007
Xiaohe Chen, San Diego, CA (US);
John Morrow Gardner, San Diego, CA (US);
Brian Douglas Mather, San Diego, CA (US);
Yan Zhu, San Diego, CA (US);
Xiaohe Chen, San Diego, CA (US);
John Morrow Gardner, San Diego, CA (US);
Brian Douglas Mather, San Diego, CA (US);
Yan Zhu, San Diego, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
The present disclosure is drawn to an ink-jet ink and a method of ink-jet printing over a prolonged period of time. The ink-jet ink include from 0.1 wt % to 10 wt % pigment by solids, from 0.1 wt % to 15 wt % latex by solids, and from 0.01 wt % to 3 wt % phosphate-containing surfactant, wherein when the ink-jet ink is fired from a thermal ink-jet printhead at 400 million drops per nozzle with said nozzle having an orifice size of about 20 microns, at least 80% drop weight is retained compared to an initial firing prior to firing the 400 million drops per nozzle.