ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, DEVELOPER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT, DEVICE FOR IMAGE FORMATION AND METHOD FOR IMAGE FORMATION

摘要

PROBLEM TO BE SOLVED: To provide a toner, developer, device for image formation and method for image formation by which decrease in the image density is not caused in any environment in electrostatic charge image development without controlling special development conditions. SOLUTION: An electrostatic charge image developing toner having toner particles containing a binder resin, a charge controlling agent which is a chromium complex salt compound expressed by general formula (I) and magnetic fine powder as a coloring material and having 7.5 to 10.5μm weight average particle size and 1.1 to 1.3 g/cm3 absolute specific gravity is used as the single component developer for the device for image formation. The chromium complex salt compound has 6 to 10μm primary particle size and included by 0.2 to 1 pt.wt. to 100 pts.wt. of the binder resin in the toner particles.