Toner

摘要

Provided is a toner containing toner particles, each of which includes a binder resin containing a polyester as a main component, a colorant, and a wax, in which the binder resin includes a block polymer in which a segment capable of forming a crystalline structure and a segment incapable of forming a crystalline structure are bonded, the toner has a maximum endothermic peak from the binder resin, as determined by differential scanning calorimetry measurement, with a peak temperature in a specific range and with an endothermic quantity in a specific range, and the wax is an ester wax having a functionality of 3 or more.

主权项

1. A toner comprising toner particles, each of which comprises a binder resin containing a polyester as a main component, a colorant, and a wax, a peak temperature of a maximum endothermic peak derived from the binder resin is 50 to 80° C. and an endothermic quantity of the maximum endothermic peak is 30 to 100 J/g, wherein
the binder resin comprises a block polymer in which a segment capable of forming a crystalline structure and a segment incapable of forming a crystalline structure are bonded, said segment incapable of forming a crystalline structure comprising a polyurethane obtained by reacting a diol with a diisocyanate, and the block polymer containing 50 to 85 mass % of the segment capable of forming a crystalline structure based on the total amount of the binder resin, the wax being an ester wax obtained by an esterification reaction between an alcohol and a long-chain linear saturated fatty acid, and the alcohol is at least one member selected from the group consisting of a glycerol, a pentaerythritol and a dipentaerythritol.