TONER FOR STATIC CHARGE IMAGE DEVELOPMENT

To provide a toner for static charge image development which excels in low temperature fixability, and with which it is possible to stably form a high quality image in a high temperature high humidity environment or low temperature low humidity environment or during low printing mode.SOLUTION: The t...

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Bibliographische Detailangaben
Hauptverfasser: SAKURADA IKUKO, MIYAJIMA KENJI, OBARA SHINYA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a toner for static charge image development which excels in low temperature fixability, and with which it is possible to stably form a high quality image in a high temperature high humidity environment or low temperature low humidity environment or during low printing mode.SOLUTION: The toner for static charge image development of the present invention is a toner for static charge image development that contains a binder resin and an external additive. The binder resin contains a crystalline polyester resin and a non-crystalline polyester resin, and the external additive contains an Al-Si complex oxide particle, the Si element content of the Al-Si complex oxide particle being within the range 50-90 mass%, the Si element ratio on the surface of the Al-Si complex oxide particle being within the range 3-35 at%.SELECTED DRAWING: None 【課題】本発明の課題は、低温定着性に優れ、高温高湿若しくは低温低湿環境又は低印字モード時に高画質な画像を安定して形成することのできる静電荷像現像用トナーを提供することである。【解決手段】本発明の静電荷像現像用トナーは、結着樹脂及び外添剤を含有するトナー粒子を含む静電荷像現像用トナーであって、当該結着樹脂が結晶性ポリエステル樹脂及び非晶性ポリエステル樹脂を含有し、当該外添剤がAl−Si複合酸化物粒子を含み、当該Al−Si複合酸化物粒子のSi元素の含有率が50〜90質量%の範囲内であり、かつ当該Al−Si複合酸化物粒子の表面におけるSi元素比率が3〜35at%の範囲内であることを特徴とする。【選択図】なし