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. 15, 2021
Filed:
Nov. 26, 2018
Masayuki Ukigaya, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Hiroshi Yamada, Shizuoka, JP;
Kohsuke Nagata, Chiba, JP;
Hiroyuki Takeda, Kanagawa, JP;
Masayuki Ukigaya, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Hiroshi Yamada, Shizuoka, JP;
Kohsuke Nagata, Chiba, JP;
Hiroyuki Takeda, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner is provided. The toner comprises a colorant, a release agent, and a binder resin. The binder resin comprises a crystalline polyester resin and an amorphous polyester resin. The amorphous polyester resin comprises an amorphous polyester resin A and an amorphous polyester resin B. The amorphous polyester resin A comprises an isocyanurate backbone and at least one of urethane bond and urea bond. The amorphous polyester resin B comprises a trimellitic acid backbone and at least one of urethane bond and urea bond.