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. 08, 2020
Filed:
Oct. 08, 2015
Tsuyoshi Sugimoto, Shizuoka, JP;
Shinya Nakayama, Shizuoka, JP;
Hiroshi Yamada, Shizuoka, JP;
Hideyuki Santo, Kanagawa, JP;
Ryuta Chiba, Kanagawa, JP;
Suzuka Amemori, Shizuoka, JP;
Kohsuke Nagata, Shizuoka, JP;
Tsuyoshi Sugimoto, Shizuoka, JP;
Shinya Nakayama, Shizuoka, JP;
Hiroshi Yamada, Shizuoka, JP;
Hideyuki Santo, Kanagawa, JP;
Ryuta Chiba, Kanagawa, JP;
Suzuka Amemori, Shizuoka, JP;
Kohsuke Nagata, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner, including: a polyester resin, wherein the polyester resin has a structure represented by any one of formulas 1) to 3) below: 1) R1-(NHCONH-R2)n-, 2) R1-(NHCOO-R2)n-, and 3) R1-(OCONH-R2)n-, where n is 3 or more, R1 represents an aromatic organic group or an aliphatic organic group, and R2 represents a group derived from a resin that is polyester formed of polycarboxylic acid, polyol, or both thereof; or that is a modified polyester obtained by modifying polyester with isocyanate.