METHOD FOR MANUFACTURING ELECTROPHOTOGRAPHIC TONER

METHOD FOR MANUFACTURING ELECTROPHOTOGRAPHIC TONER

To provide a method for manufacturing an electrophotographic toner that can manufacture a fractured toner with an excellent transfer property and an excellent cleaning property.SOLUTION: A method for manufacturing an electrophotographic toner includes: a step 1 for melting and mixing a mixture conta...

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Bibliographische Detailangaben
Hauptverfasser: SUZUKI MANABU, KATAYAMA KOHEI, WATANABE SHOGO, IWADATE HIDEKI
Format: Patent
Sprache:eng ; jpn
Schlagworte:
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Beschreibung
Zusammenfassung:To provide a method for manufacturing an electrophotographic toner that can manufacture a fractured toner with an excellent transfer property and an excellent cleaning property.SOLUTION: A method for manufacturing an electrophotographic toner includes: a step 1 for melting and mixing a mixture containing a binder resin, a coloring agent, and a mold parting agent; a step 2 of breaking the obtained mixture into pieces, classifying the pieces, for obtaining toner particles; and a step 3 of making the obtained toner particles into round particles. A circularity is at least 0.970, and bulk density is at least 0.290 g/cm3 and is not larger than 0.370 g/cm3.SELECTED DRAWING: None 【課題】転写性とクリーニング性のいずれもが良好な粉砕トナーを製造することができる、電子写真用トナーの製造方法に関すること。【解決手段】結着樹脂、着色剤、及び離型剤を含有する混合物を溶融混練する工程１、得られた混練物を粉砕し、分級してトナー粒子を得る工程２、及び得られたトナー粒子を球形化処理する工程３を含む、電子写真用トナーの製造方法であって、円形度が0.970以上、嵩密度が0.290g/cm3以上0.370g/cm3以下である、電子写真用トナーの製造方法。【選択図】なし