Image forming apparatus

An image forming apparatus, comprising:

• a first image forming portion for forming a toner image on a recording material under a condition satisfying a relationship:
• A1<(ρ1ΠL1)/30√3 where a specific gravity of a toner of a first color is ρ1 (g/cm3), a weight-average particle size is L1 (μm), and a maximum toner amount per unit area of the toner to be formed on the recording material before fixing is A1 (mg/cm2);
• a second image forming portion for forming a toner image on a recording material under a condition satisfying a relationship:
• A2<(ρ2ΠL2)/30√3 where a specific gravity of a toner of a second color is ρ2 (g/cm3), a weight-average particle size is L2 (μm), and a maximum toner amount per unit area of the toner to be formed on the recording material before fixing is A2 (mg/cm2);
• and
• a fixing device for fixing the toner images on the recording material so that when said image forming apparatus forms the toner images on the recording material by superposing, on a first toner image formed with the maximum toner amount per unit area A1 by said first image forming portion, a second toner image formed with the maximum toner amount per unit area A2 by said second image forming portion, a first-and-second-toner-image-overlaying ratio is 84% or more.