To obtain a good image without any turbulence by keeping down retransfer of first developer when a next transfer is carried out on a material to be transferred where developing material is transferred.

In the image forming device where the material to be transferred 27 is carried to a transfer position by a transfer carrying body 19 and an image formed by the developer is transferred to the material to be transferred 27 at a transfer position, an electrification correcting means 205 correcting an electrified condition of the developer by imparting electrical influence on the developer on the material to be transferred where the transferring is finished is provided. Thus, abnormality in electrification under high humidity where electric charge of the developer is decreased in the extreme can be corrected, retransfer to an image forming means at the time of transfer of a next color of the developed material after transferring to the material to be transferred can be evaded and an image without any turbulence can be obtained.