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. 19, 2021
Filed:
Feb. 26, 2018
Applicant:
Riso Kagaku Corporation, Tokyo, JP;
Inventors:
Marie Morinaga, Ibaraki, JP;
Shinichiro Shimura, Ibaraki, JP;
Kazuyuki Ando, Ibaraki, JP;
Hikaru Sugiura, Ibaraki, JP;
Assignee:
RISO KAGAKU CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/36 (2014.01); C09D 11/322 (2014.01); C09D 11/102 (2014.01); C09D 11/033 (2014.01); C09D 11/037 (2014.01);
U.S. Cl.
CPC ...
C09D 11/36 (2013.01); C09D 11/033 (2013.01); C09D 11/037 (2013.01); C09D 11/102 (2013.01); C09D 11/322 (2013.01);
Abstract
An oil-based inkjet ink can be provided which prevents dye conversion of a dye lake pigment contained in the ink, prevents adhesion of the ink to the nozzle plate, and yields excellent drying properties for printed items. The oil-based inkjet ink contains a dye lake pigment, a pigment dispersant and a non-aqueous solvent, wherein the non-aqueous solvent contains a silicone oil having a surface tension of at least 20 mN/m but not more than 28 mN/m. The surface tension of the silicone oil is preferably at least 22 mN/m but not more than 26 mN/m.