SPHERICAL METATITANIC ACID PARTICLE SUBJECTED TO HYDROPHOBIC TREATMENT, EXTERNAL ADDITIVE FOR TONER, SPACER FOR TONER AND TONER

摘要

PROBLEM TO BE SOLVED: To provide: spherical metatitanic acid particles subjected to hydrophobic treatment which exhibit a spacer function and simultaneously satisfy other toner characteristics; an external additive for toner; a spacer for toner and toner.SOLUTION: There are provided: spherical metatitanic acid particles subjected to hydrophobic treatment having an average particle diameter of 0.12 to 0.3 μm; an external additive for toner composed of the particles; a spacer for toner and toner.SELECTED DRAWING: Figure 1