| 摘要 |
PURPOSE: To provide an image forming device having a large diameter of a photoreceptor which uses a supporsing method of a multicolored toner and to obtain such an image forming device that a stable image of high quality can be formed on a recording sheet, good separation performance is obtd. and ozone is little produced. CONSTITUTION: This image forming device contains an electrifying means to electrify an image carrier, an exposing means to form an electrostatic latent image on the image holding body, a developing means to develop the latent image to form a toner image, a transfer means to transfer the toner image to a transfer material, and a separating means to separate the transfer material to which the toner image is transferred from the image holding body surface. The separating means includes at least an electrostatic separating means in a superposed electric field of DC bias and AC bias. A sawtooth electrode 19 as a separating electrode is disposed to face the image carrier. The sawtooth electrode 19 is designed in such a manner that the angleαbetween the peak line direction of the top of the sawtooth and the carrying direction of the transfer material ranges in 10 deg. to 60 deg. and that the width L of the electrode in the transfer direction of the transfer material is 1=70mm.
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