Toner having a toner particle with a binder resin containing a copolymer of a styrenic polymerizable monomer, and at least one of an acrylic or methacrylic polymerizable monomer

A toner comprising;

• a toner particle comprising a binder resin, said binder resin containing a copolymer of a crosslinking agent, a styrenic polymerizable monomer, and at least one member selected from the group consisting of acrylic polymerizable monomers and methacrylic polymerizable monomers;
• the crosslinking agent being provided by a Michael addition reaction of a polyvalent mercapto compound represented by formula (2) to a multifunctional (meth)acrylate compound represented by formula (1)
• where R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms,
• L1 represents an m-valent linear or branched aliphatic hydrocarbon group optionally having a hydroxy group, or an ether bond-containing m-valent linear or branched aliphatic hydrocarbon group optionally having a hydroxy group, and
• m is an integer of 3 to 6, and
• where L2 represents an alkylene group,
• L3 represents an n-valent linear or branched aliphatic hydrocarbon group optionally having a hydroxy group, or an ether bond-containing n-valent linear or branched aliphatic hydrocarbon group optionally having a hydroxy group, and
• n is an integer from 3 to 6, wherein
• an amount of a tetrahydrofuran-insoluble matter A collected when a tetrahydrofuran dispersion of the binder resin is passed through a first filter having an average pore diameter of 8 μm is not more than 10 mass % of the binder resin, and
• an amount of a tetrahydrofuran-insoluble matter B collected when the tetrahydrofuran dispersion that has been passed through the first filter is passed through a second filter having an average pore diameter of 0.8 μm is 5 to 50 mass % of the binder resin.