Toner includes aggregated and associated particles formed by mixing in an
aqueous medium at least a resin particle dispersion in which resin
particles are dispersed, a colorant particle dispersion in which colorant
particles are dispersed, and a wax particle dispersion in which wax
particles are dispersed and heat-treating the mixed dispersion for
aggregation. The aggregated and associated particles include first
particles having a capsule structure in which aggregated wax with an
average particle size of greater than 1 .mu.m is incorporated into the
resin, and second particles formed of the resin and the wax in a mixed
and dispersed state. The toner can achieve oilless fixing that prevents
offset without using oil while maintaining high OHP transmittance and
also can eliminate spent of the toner components on a carrier to make the
life longer.