IMAGE FORMING DEVICE, IMAGE FORMING METHOD, AND IMAGE FORMING SYSTEM

摘要

Fogging generation is properly prevented. An image forming device comprising the followings: an image carrier for carrying a latent image, a developer carrier having on its surface recesses arranged regularly and transporting a developer to an opposing position opposite to the image carrier by turning with the developer kept carried, and an ac voltage applying unit for applying to the developer carrier an ac voltage provided with a first voltage for sending the developer from the developer carrier to the image carrier, for the purpose of allowing the developer transported to the opposing position to develop the latent image, and with a second voltage for sending the developer from the image carrier to the developer carrier, wherein the frequency of the ac voltage is up to a value obtained by dividing the minimum width, along the peripheral direction of the developer carrier, of the recess by the moving speed of the surface of the developer carrier when the developer carrier turns.