Patent ID: 7223508

Claim:
A toner for developing an electrostatic image, comprising toner particles containing a binder resin and a colorant, wherein a Feret's average horizontal diameter of the colorant is from 10 nm to 500 nm, a ratio of the colorant having the Feret's horizontal diameter of from 2 nm to 300 nm is 50% by number or more, and the colorant contains a compound represented by a following General Formula (1) or a lake of the compound: wherein Ria, Rib, R2a and R2b each represents a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms or a fluoroalkyl group having from 1 to 5 carbon atoms, R3 and R4 each represents a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms or a fluoroalkyl group having from 1 to 5 carbon atoms, R5 represents a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, a fluoroalkyl group having from 1 to 5 carbon atoms, an alkoxyl group having from 1 to 5 carbon atoms, a halogen atom, a cyano group, a nitro group, a sulfo group, an alkali earth metal salt or higher amine salt having a sulfo group, N-phenylaminosulfonyl group, a carboxyl group, an alkali earth metal salt or higher amine salt having a carboxyl group, N-phenylcarbamoyl group, an ureylene group, an iminodicarbonyl group, an alkoxycarbonyl group, —CONHR6 (wherein R6 represents a hydrogen atom, an alkyl group having from 1 to 8 carbon atoms or a phenyl group), —NHCOR7 (wherein R7 represents an alkyl group) or —SO2R8 (wherein Rs is an alkyl group having from 1 to 8 carbon atoms), m1 and m2 each represents an integer of 1 to 5, n represents a number of 1 to 5, and X˜ represents an anion.