Rossi, Kimms & McDowell, LLP
Toner kit and color-image-forming method
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 D4b 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 D4c 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):0.60≦D4.c/D4b≦0.96,:  Relation (1)0.750≦Sc/Sb≦1.000;:  Relation (2)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.
Canon Kabushiki Kaisha
G
G03G
inventional
Shinya Shuntaro Katsuyuki Yushi
Yachi Watanabe Nonaka Mikuriya