A toner for electrostatic image development, which comprises a binder resin, a colorant and a charge control resin, wherein the charge control resin is a copolymer composed a vinyl monomer unit and a quaternary ammonium salt group-containing acrylate monomer unit and has a glass transition temperature of 40 to 75\xb0 C. The frame also includes a rear leg structure including rear legs, each being pivoted to a front leg via a first hinge for movement of the rear leg structure between a use position and a storage position. Next, the system places the IC device within a continuous row of diffusion.