Patent ID: 10394147

Abstract:
Toner particles of a toner contain a non-crystalline polyester resin, a crystalline polyester resin, a styrene-acrylic acid-based resin, and an ester wax. The crystalline polyester resin has a repeating unit derived from an acrylic acid-based monomer and a repeating unit derived from a styrene-based monomer. The styrene-acrylic acid-based resin has a repeating unit derived from an acrylic acid-based monomer having an amino group and a repeating unit derived from a styrene-based monomer. An amino group ratio in the styrene-acrylic acid-based resin is at least 40% and no greater than 60%. The toner has a storage elastic modulus of at least 1.00×105 Pa and no greater than 5.00×105 Pa at 90° C. The ester wax has a melting point of at least 60° C. and no higher than 80° C. A dispersion diameter of the ester wax in the toner particles is at least 500 nm and no greater than 1,000 nm.