Patent ID: 8439495

Claim:
An ink jet liquid composition used in combination with an ink comprising a pigment, wherein a ratio A max /A min of the maximum absorbance A max to the minimum absorbance A min of the liquid composition in a wavelength range of 400 nm to 780 nm is 1.0 or more and 2.0 or less, the liquid composition contains an ABC triblock polymer, the ABC triblock polymer is formed from an A block having an aryl group, a B block having a unit represented by the following general formula (1), and a C block having a unit represented by the following general formula (2), an acid value of the ABC triblock polymer is 20 mgKOH/g or more and less than 150 mgKOH/g, the ratio of the number average molecular weight of the ABC triblock polymer to the acid value of the ABC triblock polymer is 50 or more and 200 or less, the proportion (percent by mass) of the A block in the ABC triblock polymer is 20.0 percent by mass or more and 80.0 percent by mass or less relative to a total mass of the ABC triblock polymer, and the proportion (percent by mass) of the A block in the ABC triblock polymer is 5.0 times or more and 15.0 times or less the proportion (percent by mass) of units derived from all acidic monomers contained in the ABC triblock polymer, in the general formula (1), R B1 represents a hydrogen atom or a methyl group and R B2 represents an alkyl group having the carbon number of 1 to 8, a cycloalkyl group having the carbon number of 4 to 8, or a hydroxy alkyl group having the carbon number of 2 to 8, and in the general formula (2), at least one of R C1 to R C4 is a —COOH group, an —R C5 —COOH group, or a salt thereof, the remainder is a hydrogen atom, an alkyl group having the carbon number of 1 to 8, or a cycloalkyl group having the carbon number of 4 to 8, and R C5 is an alkylene group having the carbon number of 1 to 5.