Invention Grant
- Patent Title: Method for producing toner for electrophotography
-
Application No.: US15998956Application Date: 2017-02-17
-
Publication No.: US10578987B2Publication Date: 2020-03-03
- Inventor: Shogo Watanabe , Kotaro Shimada , Arisa Yamamoto
- Applicant: KAO CORPORATION
- Applicant Address: JP Tokyo
- Assignee: KAO CORPORATION
- Current Assignee: KAO CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2016-031041 20160222
- International Application: PCT/JP2017/005895 WO 20170217
- International Announcement: WO2017/145932 WO 20170831
- Main IPC: G03G9/08
- IPC: G03G9/08 ; G03G9/087

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 |Cmp−Wmp| between a melting point Cmp of the crystalline resin (C) and a melting point Wmp of the ester wax (W) is 30° C. or less, and the melt-mixing is performed at a temperature Kt that is the melting point Cmp or more and the melting point Wmp or more.
Public/Granted literature
- US20190227448A1 METHOD FOR PRODUCING TONER FOR ELECTROPHOTOGRAPHY Public/Granted day:2019-07-25
Information query