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:
Oct. 22, 2019
Filed:
Dec. 05, 2018
Applicants:
Toyoshi Sawada, Shizuoka, JP;
Kazumi Suzuki, Shizuoka, JP;
Yu Naito, Shizuoka, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/08 (2006.01); G03G 9/09 (2006.01); G03G 15/08 (2006.01); C07F 5/00 (2006.01); G03G 9/097 (2006.01);
U.S. Cl.
CPC ...
G03G 9/0924 (2013.01); C07F 5/003 (2013.01); G03G 9/09733 (2013.01); G03G 9/09758 (2013.01); G03G 9/09775 (2013.01); G03G 15/08 (2013.01);
Abstract
A toner includes a europium complex represented by the following Chemical formula where A represents 2-naphthyl group, 2-naphthyl group having a substitution group selected from the group consisting of an alkyl group, an alkoxy group, and a halogen, R represents a fluoroalkyl group having one to three carbon atoms or a methyl group, and R, R, R, and Reach, independently represent hydrogen atoms, alkyl groups, or aryl groups, wherein the toner has a hydroxyl value of from 20 to 40 mgKOH/g.