Toner for developing electrostatic images

A toner for developing electrostatic images, comprising an external additive and colored resin particles containing a binder resin, a colorant and softening agents,

• wherein the colored resin particles contain a monoester compound A represented by the following formula (1) and a monoester compound B represented by the following formula (2) as the softening agents, and a content of the monoester compound A is in the range from 95 to 99% by mass, and a content of the monoester compound B is in the range from 1 to 5% by mass, on an assumption that a sum of the contents of the monoester compound A and B is 100% by mass, and
• wherein a content of the softening agents is in the range from 10 to 30 parts by mass, with respect to 100 parts by mass of the binder resin:
• R1—COO—R2 Formula (1)
• wherein, R1 is a linear alkyl group having 17 to 23 carbons;
• R2 is a linear alkyl group having 16 to 22 carbons;
• and a sum of the carbons of R1 and R2 is 39;
• R3—COO—R4 Formula (2)
• wherein, R3 is a linear alkyl group having 15 to 21 carbons;
• R4 is a linear alkyl group having 16 to 22 carbons;
• and a sum of the carbons of R3 and R4 is 35 to 37.