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:
Apr. 09, 2019
Filed:
Sep. 06, 2017
Yoshitaka Yamauchi, Shizuoka, JP;
Hisashi Nakajima, Shizuoka, JP;
Kazumi Suzuki, Shizuoka, JP;
Namie Suzuki, Shizuoka, JP;
Yoshitaka Yamauchi, Shizuoka, JP;
Hisashi Nakajima, Shizuoka, JP;
Kazumi Suzuki, Shizuoka, JP;
Namie Suzuki, Shizuoka, JP;
Ricoh Company, Ltd, Tokyo, JP;
Abstract
A toner for electrophotography, the toner including an amorphous polyester resin, an addition polymerization-based resin, and wax that is ester wax or carnauba wax, wherein the toner satisfies relationships represented by Formula 1 and Formula 2 below,  (Formula 1)|  (Formula 2)where SPr is a value of a solubility parameter of the amorphous polyester resin, SPw is a value of a solubility parameter of the wax, and SPd is a value of a solubility parameter of the addition polymerization-based resin.