| 主权项 |
1. A toner comprising a charge control agent containing one or more resorcin derivatives represented by the following formula (1) as an active substance(s), a colorant and a binder: wherein in formula (1), R1 and R2, which may be identical to or different from each other, represent a hydrogen atom, a deuterium atom, a halogen atom, a hydroxyl group, a nitro group, a carboxyl group, an ester group, a linear or branched alkyl group having 1 to 20 carbon atoms which may have a substituent, a cycloalkyl group having 5 to 10 carbon atoms which may have a substituent, a linear or branched alkyloxy group having 1 to 20 carbon atoms which may have a substituent, a cycloalkyloxy group having 5 to 10 carbon atoms which may have a substituent, an acyl group having 2 to 6 carbon atoms which may have a substituent, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; R3 and R4, which may be identical to or different from each other, represent a hydrogen atom, a deuterium atom, a linear or branched alkyl group having 1 to 20 carbon atoms which may have a substituent, a cycloalkyl group having 5 to 10 carbon atoms which may have a substituent, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; R5s, which may be identical to or different from each other, represent a hydrogen atom, a deuterium atom, a linear or branched alkyl group having 1 to 20 carbon atoms which may have a substituent, a cycloalkyl group having 5 to 10 atoms which may have a substituent group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; R3 and R4 may be joined to each other via a single bond to form a ring. |
