| abstract |
This invention provides an image forming apparatus that can suppress, for example, soiling of image white parts, double images, and thin spots attributable to uneven toner particle size distribution and matching between a toner and a photoreceptor, can improve image quality, has good fixation, has good cleaning properties, causes no significant fogging, no dot missing, can realize good hairline reproduction, and, even when a high-speed printing machine is used, can reduce soiling or the like in long-term use and can realize excellent image stability. In the image forming apparatus, a photosensitive layer in the electrophotographic photoreceptor comprises an undercoating layer containing a polyamide resin, and the toner for electrostatic charge image development contains toner mother particles formed in an aqueous medium. The image forming apparatus is characterized in that the toner volume median diameter (Dv50) is not less than 4.0 μm and not more than 7.0 μm, and the relationship between the volume median diameter (Dv50) and the percentage number (Dns) of toners having a particle diameter of not less than 2.00 μm and not more than 3.56 μm satisfies formula (1). Dns ≤ 0.233EXP (17.3/Dv50) (1) |