| 摘要 |
In a toner kit having i) a non-magnetic black toner having at least carbon black and ii) color toners, the black toner has a weight-average particle diameter represented by D 4 b and a one-point method BET specific surface area represented by Sb, and the color toners, other than the black toner, each have a weight-average particle diameter represented by D 4 c and a one-point method BET specific surface area represented by Sc, where the black toner and color toners satisfy the following relations (1) and (2): <?in-line-formulae description="In-line Formulae" end="lead"?>0.60<=D 4 c/D 4 b<=0.96, Relation (1)<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>0.750<=Sc/Sb<=1.000; Relation (2)<?in-line-formulae description="In-line Formulae" end="tail"?> and each have an average circularity of from 0.950 to 1.000 and a circularity standard deviation of less than 0.040 as measured with a flow type particle image analyzer.
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