INKJET DEVELOPER INK COMPOSITION AND PRESSURE-SENSITIVE RECORDING MATERIAL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an inkjet developer ink composition for conveniently producing a pressure-sensitive recording color developing sheet having good initial color development, a pressure-sensitive recording material including the same, and a pressure-sensitive copying color developing sheet.

SOLUTION: This inkjet developer ink composition comprises an aqueous dispersion including a developer comprising a polyvalent metal salt (A) of a salicylic acid or a derivative thereof and a styrene resin (B) including a polymerization part derived from ethylene oxide and/or propylene oxide and having a molecular weight of the polymerization part of ≥1,000. An area average particle size of the polyvalent metal salt (A) of the salicylic acid or the derivative thereof is ≥10 nm and ≤500 nm. An acid value of the alkali-soluble styrene-acrylic resin (B) is 5 to 120 mgKOH/g, and pH of the ink composition is ≥4 and ≤10.

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