| abstract |
PROBLEM TO BE SOLVED: To provide encapsulated particles using a normal polyester resin and capable of being finely dispersed in water and having good dispersion stability. In addition, the use of the encapsulated particles provides a toner having excellent chargeability, high-definition image reproduction, low-temperature fixing, high mechanical strength, excellent durability, and excellent heat-resistant storage stability. . An encapsulated particle obtained by polymerizing a monomer having an ethylenically unsaturated bond on the surface and inside of a core particle composed of polyester resin particles finely dispersed in an aqueous medium. An encapsulated particle, wherein a water-soluble polymerization initiator and an oil-soluble polymerization initiator are used simultaneously when polymerizing a monomer. [Selection figure] None |