| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for forming an image by a noncontact magnetic single-component development method by which stable high-quality images excellent in developing property and reproducibility of thin lines can be formed for a long time, and to provide an image forming device and a developer used for that method. SOLUTION: The method for forming an image is carried out by disposing an electrostatic latent image holding body and a developer carrying body with a specified gap (Dsd) between them, carrying the developer as regulated into a layer thinner than the gap (Dsd) on the developer carrying body by a developer layer regulating member, and applying an AC electric field in a developing region to develop an image. In this method, the developer consists of at least magnetic toner, the coefficient of variation in the shape coefficient of the toner particles is <=16%, and the coefficient of variation in number in the number grain distribution is <=27%. |
