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:
Aug. 30, 2016
Filed:
Jan. 22, 2014
Applicant:
Hitachi Maxell, Ltd., Ibaraki-shi, Osaka, JP;
Inventors:
Assignee:
HITACHI MAXELL, LTD., Ibaraki-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/30 (2014.01); C09D 11/36 (2014.01); C09D 11/40 (2014.01); C09D 11/322 (2014.01);
U.S. Cl.
CPC ...
C09D 11/30 (2013.01); C09D 11/36 (2013.01); C09D 11/322 (2013.01); C09D 11/40 (2013.01);
Abstract
An oil-based ink composition comprising a colorant, an organic solvent and a polymeric compound, and optionally an alkylamine ethylene oxide derivative as a pH adjusting agent, in which the pH of an aqueous phase is from 5.5 to 10, when ions in the ink composition are transferred to water. This oil-based ink composition prevents corrosion of a nozzle plate and is improved in storage stability, and thus can ensure printer reliability such as ink-jet stability obtainable even after long storage thereof, and can withstand outdoor service environments.