To provide an image forming device for satisfactorily carrying paper while sufficiently cooling the paper on which an image is formed and preventing the disorder of an toner image on the paper and the contamination of toner.

The image forming device 10 comprises a carrying guide member 70 for guiding the carriage of the paper P on which an image is formed. The carrying guide member 70 has a guide body 71, a plurality of protruded portions 72 protruded from the guide body 71 to form a paper carrying passage L3, and a blowout portion 73 for blowing outside air W from the guide body 71 toward the paper carrying passage L3. The blowout portion 73 is provided on the upstream side of the protruded portions 72 in a paper carrying direction.