Charge control agent and toner for developing electrostatic images.

摘要

The present invention comprises a charge control agent whose active ingredient is a calix(n)arene compound represented by Formula [I] and a toner for developing electrostatic images incorporating said charge control agent. <CHEM> wherein R<1> represents an alicyclic group; R<2> represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or aryl group; n represents an integer of 1 to 8. t