TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT

To provide a toner for electrostatic charge image development which suppresses curl of an image and is excellent in heat resistant storage property.SOLUTION: A toner for electrostatic charge image development is a toner for electrophotography containing a binder resin and inorganic fine particles, w...

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Hauptverfasser: KATAYAMA KOHEI, HAYASHI HIROTO, FURUSE DAIKI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a toner for electrostatic charge image development which suppresses curl of an image and is excellent in heat resistant storage property.SOLUTION: A toner for electrostatic charge image development is a toner for electrophotography containing a binder resin and inorganic fine particles, wherein the binder resin contains a crystalline polyester resin C that is a polycondensate of an alcohol component containing ethylene glycol and a carboxylic acid component containing a dicarboxylic acid-based compound having 6 or more and 16 or less carbon atoms, an addition polymerization-based resin segment that is an addition polymer of a raw material monomer containing a polyester resin segment and a styrene compound, and an amorphous composite resin A including a structural unit derived from an amphoteric monomer obtained by coupling the polyester resin segment and the addition polymerization-based resin segment through a covalent bond, and the content of the inorganic fine particles is 50 pts.mass or more and 150 pts.mass or less with respect to 100 pts.mass of the binder resin.SELECTED DRAWING: None 【課題】画像のカールが抑制され、耐熱保存性に優れた静電荷像現像用トナーに関すること。【解決手段】結着樹脂及び無機微粒子を含有する電子写真用トナーであって、前記結着樹脂が、エチレングリコールを含有するアルコール成分と炭素数6以上16以下のジカルボン酸系化合物を含有するカルボン酸成分との重縮合物である結晶性ポリエステル樹脂Cと、ポリエステル樹脂セグメント、スチレン化合物を含む原料モノマーの付加重合物である付加重合系樹脂セグメント、及び該ポリエステル樹脂セグメントと該付加重合系樹脂セグメントと共有結合を介して結合した両反応性モノマー由来の構成単位を含む非晶質複合樹脂Aを含有し、前記無機微粒子の含有量が前記結着樹脂100質量部に対して50質量部以上150質量部以下である、静電荷像現像用トナー。【選択図】なし