The present application provides toner, toner
cartridge containing the toner, and image forming apparatus, the toner has excellent low temperature fixing property, storage property,
heat resistance, and can sufficiently maintain the charge amount even under high temperature and
high humidity. The toner of the embodiment has toner parent particles and an external additive. The external additive has silica particles with a
diameter of 70 to 120 nm. The silica particles have a
degree of association of 80% or more. The toner parent particles contain a crystalline
polyester resin and an ester
wax. The ester
wax is a polycondensate of three or more carboxylic acids and two or more alcohols. The proportion of the
carboxylic acid with the largest content is 70 to 95% by
mass. The proportion of the
carboxylic acid with a
carbon atom number of 18 or less is 5% by
mass or less. The proportion of the
alcohol with the largest content is 70 to 90% by
mass. The proportion of the
alcohol with a
carbon atom number of 18 or less is 20% by mass or less.
Degree of association (%) = (n2 / (n1+n2)) x 100. 50 The present application provides toner, toner
cartridge containing the toner, and image forming apparatus, the toner has excellent low temperature fixing property, storage property,
heat resistance, and can sufficiently maintain the charge amount even under high temperature and
high humidity. The toner of the embodiment has toner parent particles and an external additive. The external additive has silica particles with a
diameter of 70 to 120 nm. The silica particles have a
degree of association of 80% or more. The toner parent particles contain a crystalline
polyester resin and an ester
wax. The ester wax is a polycondensate of three or more carboxylic acids and two or more alcohols. The proportion of the
carboxylic acid with the largest content is 70 to 95% by mass. The proportion of the carboxylic acid with a
carbon atom number of 18 or less is 5% by mass or less. The proportion of the
alcohol with the largest content is 70 to 90% by mass. The proportion of the alcohol with a carbon atom number of 18 or less is 20% by mass or less.
Degree of association (%) = (n2 / (n1+n2)) x 100.