Patent ID: 8389186

Claim:
A toner set, which is composed of toners of a plurality of colors that are used in an image forming method for forming an image by forming a toner image using the toners of a plurality of colors and transferring the formed toner image onto a recording medium, wherein each of the toners of a plurality of colors includes toner base particles that contain a binder resin and a colorant, as well as an external additive that is externally added to the toner base particles, the external additive includes small-diameter silica particles and large-diameter silica particles larger than the small-diameter silica particles, and wherein when, of the toners of a plurality of colors, three color toners to be used consecutively for forming the toner image are defined as a first toner, second toner and third toner respectively in order of usage, an average particle diameter of the large-diameter silica particles contained in the second toner is smaller than an average particle diameter of the large-diameter silica particles contained in the first toner and is larger than an average particle diameter of the large-diameter silica particles contained in the third toner.