| 摘要 |
PURPOSE:To provide an image forming device capable of having an image quality with stability as the same as that in the initial stage and without change in the particle diameter of developer even in case of increase in the number of printing sheets. CONSTITUTION:This device is provided with a photoreceptor 11 carrying images, a developing roller 32 supplying toner to the photoreceptor 11, and a developping blade 35 for forming a thin layer of toner on the roller 32. The relation Dt<15, 20<=P<=-16.44XDt+243.5 shall be satisfied, where Dt(mum) is the volume-average particle diameter of toner, P(g/cm) is pressing force of the blade 35. |
