| 主权项 |
1. A toner comprising
a toner particle that contains a binder resin that contains a styrene-acrylic resin and a block polymer, wherein the block polymer has a polyester segment and a vinyl polymer segment; the polyester segment is obtained by condensation polymerization of a monomer (a) selected from the group consisting of the monomer group A described below, and a monomer (b) selected from the group consisting of the monomer group B described below; and a content, in the polyester segment, of the substructure originating with the monomer (b) as calculated from the following formula is from at least 1.0 mol % to not more than 30.0 mol %:
{monomer (b) [mol]/(monomer (a) [mol]+monomer (b) [mol])}×100 Monomer group A: straight-chain α,ω-aliphatic diols having from at least 2 to not more than 11 carbons, straight-chain α,ω-aliphatic dicarboxylic acids having from at least 2 to not more than 13 carbons, straight-chain α,ω-aliphatic monohydroxymonocarboxylic acids having from at least 2 to not more than 12 carbons, and compounds provided by converting a carboxyl group in these compounds into an acid anhydride, alkyl ester, or lactone; Monomer group B: straight-chain α,ω-aliphatic dicarboxylic acids having from at least 14 to not more than 24 carbons, straight-chain α,ω-aliphatic diols having from at least 12 to not more than 22 carbons, straight-chain α,ω-aliphatic monohydroxymonocarboxylic acids having from at least 13 to not more than 23 carbons, straight-chain aliphatic primary monocarboxylic acids having from at least 13 to not more than 23 carbons, straight-chain aliphatic primary monoalcohols having from at least 12 to not more than carbons, and compounds provided by converting a carboxyl group in these compounds into an acid anhydride, alkyl ester, or lactone. |
