LIQUID DEVELOPER

To provide a liquid developer having high image density.SOLUTION: A liquid developer contains a toner particle containing a binder resin and a colorant, and an insulating liquid. The binder resin contains an amorphous polyester resin, and an ester compound E that is a polycondensate of an alcohol co...

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Hauptverfasser: MITSUJI MASATAKA, IZUMIYA YUTA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a liquid developer having high image density.SOLUTION: A liquid developer contains a toner particle containing a binder resin and a colorant, and an insulating liquid. The binder resin contains an amorphous polyester resin, and an ester compound E that is a polycondensate of an alcohol component containing an alcohol having a valency of 2 or more and a carboxylic acid component containing a monovalent carboxylic acid compound, with an acid value of 0.1 mgKOH/g or more and 15 mgKOH/g or less and a hydroxyl value of 20 mgKOH/g or more and 200 mgKOH/g or less.SELECTED DRAWING: None 【課題】画像濃度が高い液体現像剤に関すること。【解決手段】結着樹脂及び着色剤を含有するトナー粒子と絶縁性液体を含有する液体現像剤であって、前記結着樹脂が、非晶質ポリエステル系樹脂と、2価以上のアルコールを含むアルコール成分と1価のカルボン酸系化合物を含むカルボン酸成分との重縮合物であり、酸価が0.1mgKOH/g以上15mgKOH/g以下、水酸基価が20mgKOH/g以上200mgKOH/g以下であるエステル化合物Eとを含有する、液体現像剤。【選択図】なし