| abstract |
Toner containing a toner particle; and an external additive, wherein the external additive contains strontium titanate particles, and when in a projected image of the strontium titanate particle photographed using a scanning electron microscope, a standard deviation of a distance from a center of the projected image to a contour of the projected image Ds is circle-equivalent diameter of the projected image Da, a value CV calculated by the equation (1) is 0.07 or less, CV = Ds / (Da / 2) (1). |