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. 05, 2019
Filed:
Jul. 13, 2017
Kyocera Document Solutions Inc., Osaka, JP;
Haruhiro Nishitera, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
An electrostatic latent image developing toner includes a plurality of toner particles () each including a toner mother particle () and an external additive adhering to a surface of the toner mother particle (). The toner mother particles () contain a crystalline polyester resin and a non-crystalline polyester resin. The toner particles () include, as the external additive, crystal nucleating agent particles () containing a crystal nucleating agent for promoting crystallization of the crystalline polyester resin. On a differential scanning calorimetry spectrum of the toner before fixing, an endotherm quantity of a heat absorption peak originating from a crystalline region of the crystalline polyester resin is less than 2.0 mJ/mg. On a differential scanning calorimetry spectrum of the toner after fixing, an endotherm quantity of a heat absorption peak originating from a crystalline region of the crystalline polyester resin is at least 6.0 mJ/mg.