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. 30, 2007
Filed:
Apr. 08, 2005
Shunsuke Uozumi, Ibaraki-ken, JP;
Yasuo Yamamoto, Ibaraki-ken, JP;
Shunsuke Uozumi, Ibaraki-ken, JP;
Yasuo Yamamoto, Ibaraki-ken, JP;
Other;
Abstract
A non-aqueous ink-jet ink composition contains at least a pigment, a solvent, and a dispersing agent. The non-aqueous ink-jet ink composition further contains a chelating agent, which is soluble in the solvent. The chelating agent may be a crown ether and/or a cryptand, which acts as a neutral carrier. Alternatively, the chelating agent may be at least one chelating agent acting as an ionic carrier, which is selected from the group consisting of GEDTA, BAPTA, and DTPA. The non-aqueous ink-jet ink composition has good storage stability and good jetting-out performance through suppression of occurrence of sediments due to a change with the passage of time.