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:
Apr. 12, 2016
Filed:
Aug. 11, 2014
Applicants:
Akihiko Matsuyama, Shizuoka, JP;
Mitsuru Naruse, Shizuoka, JP;
Masayasu Nonogaki, Shizuoka, JP;
Kazukiyo Nagai, Shizuoka, JP;
Keita Katoh, Shizuoka, JP;
Yuusuke Koizuka, Shizuoka, JP;
Inventors:
Akihiko Matsuyama, Shizuoka, JP;
Mitsuru Naruse, Shizuoka, JP;
Masayasu Nonogaki, Shizuoka, JP;
Kazukiyo Nagai, Shizuoka, JP;
Keita Katoh, Shizuoka, JP;
Yuusuke Koizuka, Shizuoka, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/322 (2014.01); C08L 43/02 (2006.01); C09D 11/107 (2014.01); C09D 11/326 (2014.01); C09D 11/38 (2014.01);
U.S. Cl.
CPC ...
C09D 11/322 (2013.01); C09D 11/107 (2013.01); C09D 11/326 (2013.01); C09D 11/38 (2013.01); Y10T 428/24901 (2015.01);
Abstract
An ink composition contains a pigment; a copolymer comprising a phosphoric acid group or phosphonic acid group; a hydrosoluble solvent; and water, wherein the pigment is represented by the following chemical formula 1 and satisfies the following relation 1:≦0.20  Relation 1