METHOD FOR MANUFACTURING TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT
To provide a method for manufacturing a toner for electrostatic charge image development which is excellent in low temperature fixability, smear property of a printed matter and pressurization storage property.SOLUTION: A method for manufacturing a toner for electrostatic charge image development co...
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Zusammenfassung: | To provide a method for manufacturing a toner for electrostatic charge image development which is excellent in low temperature fixability, smear property of a printed matter and pressurization storage property.SOLUTION: A method for manufacturing a toner for electrostatic charge image development contains a crystalline polyester resin C and an amorphous resin A, in which the crystalline polyester resin C is a polycondensation product of an alcohol component containing ethylene glycol and a carboxylic acid component, and includes a step of melting and kneading a mixture containing the amorphous resin A and the crystalline polyester resin C using an open roll type biaxial kneader having two rolls having different circumferential speeds, wherein a temperature on the kneaded material discharge side of the high rotating roll of the open roll type biaxial kneader is -20°C or higher and +15°C or lower of the melting point of the crystalline polyester resin C.SELECTED DRAWING: None
【課題】低温定着性、印刷物のスメア性、及び加圧保存性に優れた静電荷像現像用トナーの製造方法に関すること。【解決手段】結晶性ポリエステル樹脂C及び非晶質樹脂Aを含有する静電荷像現像用トナーの製造方法であって、前記結晶性ポリエステル樹脂Cがエチレングリコールを含有するアルコール成分とカルボン酸成分との重縮合物であり、前記非晶質樹脂A及び前記結晶性ポリエステル樹脂Cを含有する混合物を、周速度の異なる2本のロールを備えたオープンロール型二軸混練機を用いて溶融混練する工程を含み、該オープンロール型二軸混練機の高回転ロールの混練物排出側の温度が、前記結晶性ポリエステル樹脂Cの融点-20℃以上+15℃以下である、静電荷像現像用トナーの製造方法。【選択図】なし |
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