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:
Jan. 21, 2025
Filed:
Feb. 23, 2022
Yasuo Kamada, Shizuoka, JP;
Hiroshi Yamada, Shizuoka, JP;
Toma Takebayashi, Shizuoka, JP;
Akio Takei, Shizuoka, JP;
Yasuo Kamada, Shizuoka, JP;
Hiroshi Yamada, Shizuoka, JP;
Toma Takebayashi, Shizuoka, JP;
Akio Takei, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Provided is a toner including toner base particles and resin particles. Each toner base particle includes a binder resin, a colorant, and wax. Each resin particle e has a core-shell structure including a core and a shell, where a glass transition temperature TgA of the shell is higher than a glass transition temperature TgB of the core. A surface of each toner base particle is covered with the resin particles. A storage elastic modulus G'1 of the toner at 70° C. during heating is 1.0×10Pa or greater but 1.0×10Pa or less, and a storage elastic modulus G′2 of the toner at 100° C. during heating is 1.0×10Pa or greater but 5.0×10Pa or less, as the toner is measured by a rheometer.