There is provided an ink composition which can yield records possessing
excellent rubbing/abrasion resistance and scratch resistance.
Specifically, records possessing excellent rubbing/abrasion resistance
and scratch resistance can be produced by using an ink composition
comprising: an alkali-soluble copolymer; water; a colorant; and at least
one member selected from the group consisting of wax, a viscosity
modifier, and a wetting agent. The alkali-soluble copolymer is a
copolymer, with an acid value of not more than 40, which is produced by
polymerizing an ethylenically unsaturated carboxylic acid monomer and
other monomer copolymerizable with the ethylenically unsaturated
carboxylic acid monomer in the presence of an alcoholic
hydroxyl-containing water-soluble polymer compound or a copolymerizable
surfactant and has been adjusted to a pH value, at which the copolymer is
soluble in water, by the addition of an inorganic base.