Patent ID: 7018754

Claim:
An image forming method comprising: transferring a yellow toner image comprising a yellow toner, a magenta toner image comprising a magenta toner, a cyan toner image comprising a cyan toner and a black toner images comprising a black toner on an imaging support, wherein the yellow toner, the magenta toner, the cyan toner and the black toner satisfy a condition represented by Formulas 1 to 4, 0≦R1≦0.2 Formula 1 wherein R 1 ={(The maximum value of Ky, Km, Kc and Kb)−(The minimum value of Ky, Km, Kc and Kb)}/(The maximum value of Ky, Km, Kc and Kb) 0≦R2≦0.30 Formula 2 wherein R 2 ={(The maximum value of Kσy, Kσm, Kσc and Kσb)−(The minimum value of Kσy, Kσm, Kσc and Kσb)}/(The maximum value of Kσy, Kσm, Kσc and Kσb) 0≦R3≦0.15 Formula 3 wherein R 3 ={(The maximum value of Dy, Dm, Dc and Db)−(The minimum value of Dy, Dm, Dc and Db)}/(The maximum value of D, Dm, Dc and Db) 0≦R4≦0.30 Formula 4 wherein R 4 ={(The maximum value of Dσy, Dσm, Dσc and Dσb)−(The minimum value of Dσy, Dσm, Dσc and Dσb)}/(The maximum value of Dσy, Dσm, Dσc and Dσb), wherein a shape coefficient Ky, a variation coefficient of the shape coefficient Kσy, a number average of particle diameter Dy and a variation coefficient of the number of the particle size distribution Dσy of the yellow toner; a shape coefficient Km, a variation coefficient of the shape coefficient Kσm, a number average of particle diameter Dm and a variation coefficient of the number of the particle size distribution Dσm of the magenta toner; a shape coefficient Kc, a variation coefficient of the shape coefficient Kσc, a number average of particle diameter Dc and a variation coefficient of the number of the particle size distribution Dσc of the cyan toner; and a shape coefficient Kb, a variation coefficient of the shape coefficient Kσb, a number average of particle diameter Db and a variation coefficient of the number of the particle size distribution Dσb of the black toner are represented.