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. 03, 2020
Filed:
Feb. 17, 2017
Kao Corporation, Tokyo, JP;
KAO CORPORATION, Tokyo, JP;
Abstract
The present invention relates to a process for producing a toner for electrophotography that is excellent in the low-temperature fusing property, the initial image quality after storage, and the document offset property. A process for producing a toner for electrophotography, including step 1: melt-mixing a mixture containing a crystalline resin (C) and ester wax (W) having a dipentaerythritol unit as a constitutional component, wherein a difference |C−W| between a melting point Cof the crystalline resin (C) and a melting point Wof the ester wax (W) is 30° C. or less, and the melt-mixing is performed at a temperature Kthat is the melting point Cor more and the melting point Wor more.