TONER AND BINARY DEVELOPER

摘要

A toner obtained by mixing together a resin particle dispersion having at least resin particles dispersed in a water base medium, a colorant particle dispersion having colorant particles dispersed therein and a wax particle dispersion having wax particles dispersed therein so as to effect agglomeration and heating the mixture to thereby form agglomerated assembled particles, wherein the agglomerated assembled particles comprise primary particles of a capsule structure having wax agglomerates of greater than 1 mum average particle diameter enclosed in the resin and secondary particles composed of resin and wax mixed and dispersed. As a result, without the need of oil application, not only can oil-less fixation capable of preventing offset while retaining high OHP light transmission be realized, but also spending of toner components on carrier can be avoided to thereby prolong the service life thereof.