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:
Dec. 30, 2014
Filed:
Mar. 23, 2012
Applicants:
Mitsuru Naruse, Shizuoka, JP;
Minoru Hakiri, Shizuoka, JP;
Naoya Morohoshi, Shizuoka, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/01 (2006.01); B41J 2/175 (2006.01); B41J 2/21 (2006.01); C09D 11/326 (2014.01); C09D 11/38 (2014.01); C09D 11/54 (2014.01); C08K 5/24 (2006.01);
U.S. Cl.
CPC ...
B41J 2/17513 (2013.01); B41J 2/2107 (2013.01); B41J 2/211 (2013.01); B41J 2/17503 (2013.01); B41J 2/1752 (2013.01); B41J 2/17553 (2013.01); C09D 11/326 (2013.01); C09D 11/38 (2013.01); C09D 11/54 (2013.01); C08K 5/24 (2013.01);
Abstract
An inkjet ink including water, a pigment, a polymer, and a hydrazine compound. The polymer does not include an anionic unit and includes a first unit having a carbonyl group capable of reacting with a hydrazino group, and a second unit having at least one of an amino group, a dimethylamino group, and a diethylamino group. The content of the first unit is from 40% to 90% by weight based on the weight of the polymer, and the inkjet ink has a pH of not less than 9.