The present invention provides a microencapsulated pigment, wherein
pigment particles having an anionic group on the surface are coated with
a polymer comprising a repeating structural unit derived from a
cationically polymerizable surface active agent and a repeating
structural unit derived from an anionically polymerizable surface active
agent and/or a hydrophilic monomer having an anionic group; and a process
for producing a microencapsulated pigment, wherein the cationically
polymerizable surface active agent is added to and mixed with an aqueous
dispersion of the pigment particles having an anionic group on the
surface, the anionically polymerizable surface active agent and/or the
hydrophilic monomer having an anionic group are added thereto and the
mixture was emulsified, followed by adding a polymerization initiator and
carrying out emulsion polymerization. In addition, an ink jet recording
ink comprising at least the above microencapsulated pigment and water.