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:
Jun. 19, 2018
Filed:
Dec. 09, 2016
Yoshiki Yanagawa, Shizuoka, JP;
Akihiko Matsuyama, Shizuoka, JP;
Kazukiyo Nagai, Shizuoka, JP;
Tomoyuki Shimada, Shizuoka, JP;
Shigeyuki Harada, Shizuoka, JP;
Akiyoshi Sabu, Kanagawa, JP;
Yuusuke Koizuka, Shizuoka, JP;
Koichiro Oyama, Kanagawa, JP;
Takuya Yamazaki, Shizuoka, JP;
Yoshiki Yanagawa, Shizuoka, JP;
Akihiko Matsuyama, Shizuoka, JP;
Kazukiyo Nagai, Shizuoka, JP;
Tomoyuki Shimada, Shizuoka, JP;
Shigeyuki Harada, Shizuoka, JP;
Akiyoshi Sabu, Kanagawa, JP;
Yuusuke Koizuka, Shizuoka, JP;
Koichiro Oyama, Kanagawa, JP;
Takuya Yamazaki, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An ink includes a pigment a quinacridone compound represented by Chemical formula 1, and a copolymer including the structure unit represented by Chemical formula 2 or Chemical formula 3. In Chemical formula 1, R, R, R, and Reach, independently represent hydrogen atoms, halogen atoms, or alkyl groups having 1-4 carbon atoms, R, R, and Reach, independently represent alkyl groups having 1-4 carbon atoms or alkylene groups having 1-4 carbon atoms, and m represents 1 or 2, In Chemical formula 2, Rrepresents a hydrogen atom or a methyl group and Lrepresents an alkylene group having 2-16 carbon atoms, In Chemical formula 3, R9 represents a hydrogen atom or a methyl group, L2 represents a single bond or —(CH)—O— and n represents an integer of 2-16.