| 摘要 |
<p>A mono-component developing method, comprising the steps of: supplying a mono-component developing agent containing a toner onto a developer-supporting member that is aligned face to face with an image-supporting member; regulating the developing agent on the developer-supporting member by a regulating member installed in contact with the developer-supporting member; and developing an electrostatic latent image formed on the image-supporting member by the toner, wherein the toner has a weight-average particle size (d50) in the range of 4 to 10 mu m, an average degree of roundness of not less than 0.950 and a standard deviation of degree of roundness of not more than 0.040, and more preferably the toner has a specific value of a surface shape characteristic D/d50, and a specific ratio d50/Ra of the toner weight-average particle size (d50) to the surface roughness (Ra) of the developer-supporting member.</p> |
