| 摘要 |
PROBLEM TO BE SOLVED: To stabilize an amount of development toner and prevent a brush mark and a carrier-over phenomenon. SOLUTION: This method for forming an image includes the steps of a latent image forming process for forming a latent image on a photosensitive member according to the image data and a developing process for developing the latent image with a developer in a magnetic roller on which a development bias potential is applied. In this case, the developer, converted on a core material, contains a magnetic carrier having a resin coating layer with conductive powders dispersed therein and toner, the resistivity of the core material and the magnetic carrier as a whole being less than, or equal to 1Ωcm and 10 to 10<9>Ωcm, respectively, at an electric field strength of 10<4> V/cm in a magnetic brush state, whose development curve which is represented by a contrast potential defined by a development bias potential and a potential of an exposed region on the photosensitive member, and the amount of the development toner transferring to the latent image on the photosensitive member, has a saturation region, and the development bias potential is applied so that the amount of the development toner shows the saturation characteristic.
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