LIQUID DEVELOPER

• Main Authors: ITOI AKITO, KAMIYOSHI NOBUMICHI
• Format: Patent
• Language: English; Japanese
• Published: 13.06.2019
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

To provide a liquid developer excellent in adhesion of an image to be fixed to a resin film, and a printing method using the liquid developer.SOLUTION: There is provided a liquid developer that contains toner particles containing a binder resin and a colorant, a dispersant, and an insulating liquid, wherein the binder resin is a polycondensate of a carboxylic acid component containing a polymerized fatty acid and an amine component, and contains a polyamide resin having a storage elastic modulus at 25°C of 2.0×10Pa or less, the liquid developer containing toner particles containing a binder resin and a colorant, a dispersant, and an insulating liquid, wherein when the binder resin is made into a film and adhered to a film selected from a polyester film and a polypropylene film in conformance with JIS K 6854-3:1999, the maximum peel strength of the binder resin is 0.5 N or more and 10 N or less in terms of 15 mm width. Also provided is a printing method using the liquid developer.SELECTED DRAWING: None 【課題】定着画像の樹脂フィルム接着性に優れる液体現像剤及び該液体現像剤を用いた印刷方法を提供すること。【解決手段】結着樹脂と着色剤を含むトナー粒子、分散剤、及び絶縁性液体を含む液体現像剤であって、前記結着樹脂が重合脂肪酸を含むカルボン酸成分とアミン成分との重縮合物であり、25℃における貯蔵弾性率が2.0×108Pa以下であるポリアミド樹脂を含有する、液体現像剤、結着樹脂と着色剤を含むトナー粒子、分散剤、及び絶縁性液体を含む液体現像剤であって、前記結着樹脂をフィルム化し、JIS K 6854-3:1999に準じて、ポリエステルフィルム及びポリプロピレンフィルムから選ばれるフィルムに接着させた場合の最大剥離強度が15mm幅換算で、0.5N以上10N以下である、液体現像剤、及び該液体現像剤を用いた印刷方法。【選択図】なし