MANUFACTURING METHOD OF CURABLE LIQUID DEVELOPER

• Main Authors: MASUDA AYANO, NATORI MAKOTO, HASEGAWA WAKA, SHIRAKAWA JUN, ITO JUNJI, AICHI YASUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 07.06.2018
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide a manufacturing method of a curable liquid developer which has the small toner particle diameter and is excellent in the curing speed at the time of image formation.SOLUTION: A manufacturing method of a curable liquid developer containing toner particles having a coloring agent and binder resin, a dispersant and an insulation liquid (a) not dissolved in the binder resin includes: a step (1) of preparing the mixture containing the coloring agent, the binder resin, the insulation liquid (a), a solvent (b) dissolved in the binder resin and the dispersant dissolved in both of the insulation liquid (a) and the solvent (b); and a step (2) of removing the solvent (b) from the mixture. The insulation liquid (a) contains a monomer having the polymerizable functional group. The molar average functional group number of the insulation liquid (a) is equal to or greater than 1.8. The molar average SP value of the insulation liquid (a) is equal to or less than 9.0. The average molecular weight of the insulation liquid (a) is equal to or greater than 250.SELECTED DRAWING: None 【課題】トナー粒子径が小さく、かつ画像形成時の硬化速度が良好な硬化型液体現像剤の製造方法。【解決手段】着色剤及びバインダー樹脂を含有するトナー粒子、分散剤、並びに、バインダー樹脂を溶解しない絶縁性液体（ａ）を含有する硬化型液体現像剤の製造方法であって、着色剤、バインダー樹脂、絶縁性液体（ａ）、前記バインダー樹脂を溶解する溶剤（ｂ）、並びに絶縁性液体（ａ）及び溶剤（ｂ）の両方に溶解する該分散剤を含有する混合液を調製する工程（１）、及び、該混合液から該溶剤（ｂ）を留去する工程（２）を含み、該絶縁性液体（ａ）が、重合性の官能基を有するモノマーを含み、該絶縁性液体（ａ）のモル平均官能基数が１．８以上であり、該絶縁性液体（ａ）のモル平均ＳＰ値が９．０以下であり、該絶縁性液体（ａ）の平均分子量が２５０以上であることを特徴とする製造方法。【選択図】なし