CHARGE CONTROL AGENT AND TONER USING SAME

摘要

The present invention provides a positive-charge control agent containing, as an active substance(s), one or two or more rhodanine compounds represented by the following formula (1).
wherein R 1 represents a hydrogen atom, etc.; R 2 represents a hydrogen atom, etc.; and R 3 to R 7 , which may be identical to or different from each other, represent a hydrogen atom, a cyano group, a trifluoromethyl group, a nitro group, a linear or branched alkyl group having 1 to 8 carbon atoms which may have a substituent, etc.. R 2 to R 7 may be joined to each other to form a ring. V, W, X, Y and Z represent a carbon atom or a nitrogen atom and 0 to 3 of V, W, X, Y and Z are nitrogen atoms which have no substituent of R 3 to R 7 , with the proviso that at least one of R 3 to R 7 is a cyano group, a nitro group, or a linear or branched alkyl group having 1 to 4 carbon atoms substituted with three or more fluorine atoms.