Toner

A toner comprising a toner particle containing a binder resin, wherein

• the binder resin comprises a block polymer as a main component, the block polymer being obtained by chemically bonding a crystalline polyester resin with an amorphous polyurethane resin, wherein;
• the binder resin
• comprises from 50.0 mass % to 85.0 mass % of a crystalline polyester resin component, and
• has a concentration of ester bonds derived from the crystalline polyester resin component of not more than 5.2 mmol/g, and wherein;
• in a three-point bending test on a toner specimen obtained by melting the toner and molding the same to a length (1) of 30.0 mm, a width (w) of 13.0 mm and a thickness (t) of 4.0 mm, the test being carried out at a span (L) between specimen support points of 15.0 mm, when the maximum bending stress of the toner specimen determined by formula (1) below from the maximum load FMAX (N) measured at a temperature of 25° C. is σMAX(MPa)
• σMAX=(3×FMAX×L)/(2×w×t2) (1)
• and when the maximum value of the flexural elasticity modulus E of the toner specimen determined by formula (2) below from the slope ΔF/Δs of a load/deflection curve is EMAX(MPa)
• E=L3/(4×w×t3)×(ΔF/Δs) (2),
• EMAX is from 200 MPa to 450 MPa, and
• the strain energy u per unit volume calculated by formula (3) below from σMAX and EMAX is at least 0.30 MPa
• u=σMAX2/(2×EMAX) (3)
• (where ΔF(N) representing a change in load between any two points selected so that the change in deflection Δs becomes 0.2 mm).