PROCESS LIQUID FOR IMAGE FORMING, IMAGE FORMING METHOD, RECORD AND INK JET RECORDING UNIT

PROBLEM TO BE SOLVED: To provide process liquid which can improve rub resistance of an image while preventing degradation of image quality by droplet coalescence of ink in image forming with water based ink.SOLUTION: Process liquid for image forming with water based ink satisfies: [1] the process li...

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Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide process liquid which can improve rub resistance of an image while preventing degradation of image quality by droplet coalescence of ink in image forming with water based ink.SOLUTION: Process liquid for image forming with water based ink satisfies: [1] the process liquid contains flocculating agent for coloring agent of the water based ink, water-soluble organic solvent, polymer particles and water; [2] the polymer particles have a core shell structure and contain wax in the core part; and [3] the shell part of the polymer particles have lower critical solution temperature more than 30°C.SELECTED DRAWING: None 【課題】水性インクによる画像形成において、インクの液滴合一による画像品質の悪化を防ぎつつ、画像の耐擦性を向上させることができる処理液の提供。【解決手段】次の要件〔1〕〜〔3〕を満たす水性インクによる画像形成用処理液。〔1〕水性インクの着色剤用凝集剤、水溶性有機溶剤、ポリマー粒子及び水を含有する。〔2〕前記ポリマー粒子がコアシェル構造を有し、コア部にワックスを含有する。〔3〕前記ポリマー粒子のシェル部が30℃以上の下限臨界溶解温度を有する。【選択図】なし