To provide an image forming device that can form an excellent image by preventing the occurrence of toner filming and scratch due to deficiency of coating amount of lubricant on a photoreceptor surface during image forming operation for consecutively forming images on a plurality of transfer sheets.

During image forming operation for consecutively forming images on the plurality of transfer sheets P, it is determined whether it is a timing requiring coating of the lubricant based on a preliminarily set lubricant coating condition. If it is determined that it is the timing requiring coating of the lubricant, a lubricant coating mode is executed where a lubricant coating device 34 is operated for a prescribed time period to coat the lubricant on the photoreceptor 8 while driving the photoreceptor 8. During image forming operation, when image area rate calculated based on the image data is a prescribed reference area rate or more and the number of consecutive output sheets of the transfer sheets P is a prescribed reference number of sheets or more, it may be determined to be the timing requiring the coating of the lubricant.