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:
Mar. 14, 2017
Filed:
Aug. 28, 2014
Suzuka Amemori, Shizuoka, JP;
Tsuyoshi Sugimoto, Shizuoka, JP;
Akinori Saito, Shizuoka, JP;
Toyoshi Sawada, Kanagawa, JP;
Keiji Makabe, Shizuoka, JP;
Suzuka Amemori, Shizuoka, JP;
Tsuyoshi Sugimoto, Shizuoka, JP;
Akinori Saito, Shizuoka, JP;
Toyoshi Sawada, Kanagawa, JP;
Keiji Makabe, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner is provided. The toner includes a crosslinked polyester resin, and a block copolymer. The crosslinked polyester resin includes a diol component, which includes an aliphatic diol component having 3 to 10 carbon atoms in an amount of 50% by mole, and a crosslinked component, which is at least one of a crosslinked component of an aliphatic alcohol having three or more valences and a crosslinked component of an aliphatic acid having three or more valences, and the block copolymer includes a crystalline segment (a) and a non-crystalline segment (b). The toner has a first glass transition temperature (Tgst) of from 20° C. to 50° C., which is determined by subjecting the toner to differential scanning calorimetry (DSC) and measuring a glass transition temperature in a first temperature rising process in the differential scanning calorimetry (DSC).