Black toner containing compound having azo skeleton

A black toner, comprising toner particles, each of which contains

• a binder resin,
• a compound and
• a carbon black,
• the compound has a structure of which a polymer portion having a monomer unit represented by the Formula (2) is bound to a structure represented by Formula (1);
• wherein, in Formula (1),
• at least one of R2, R3, Ar1, and Ar2 is bound to the polymer portion directly or through a linking group, wherein
• each R1 independently represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a trifluoromethyl group, a cyano group, or a hydroxyl group,
• R2 and R3 not bound to the polymer portion independently represent a monovalent group selected from the group consisting of an alkyl group, a phenyl group, an OR4 group, and an NR5R6 group and R4 to R6 independently represent a hydrogen atom, an alkyl group, a phenyl group, or an aralkyl group,
• Ar1 and Ar2 not bound to the polymer portion independently represent an aryl group,
• wherein
• any one of R2 and R3, Ar1, and Ar2 bound to the polymer portion independently represents a divalent group of which a hydrogen atom is removed from the corresponding monovalent group of any one of R2 and R3,
• any one of Ar1 and Ar2 bound to the polymer portion independently represents a divalent group of which a hydrogen atom is removed from the corresponding aryl group of any one of Ar1 and Ar2,
• m represents an integer of 3 or 4, n represents an integer of 1 or 2, and n+m is 5;
• and
• in Formula (2),
• R7 represents a hydrogen atom or an alkyl group, and
• R8 represents a phenyl group, a carboxyl group, a carboxylic acid ester group, or a carboxylic acid amide group.