PROBLEM TO BE SOLVED: To provide a printing device which prints and forms a color image with a watermark portion that can give an excellent watermark effect to a transfer body.SOLUTION: A printing device performs transfer printing of an image with a watermark portion by overlapping a first transfer image formed with the first ink CIK on a second transfer image formed with the second ink S having glossiness, and includes an image data transmission unit CT2 which generates and transmits watermark transfer image data SN2B being the image data of the second transfer image by synthesizing the second image data SN2 with the image data SNs of a basic transfer pattern for transferring the second ink S so that a prescribed region being the background of the watermark portion becomes a region where the first pixels transferred with only the first ink CIK and the second pixels transferred with the first ink CIK and second ink S are dispersedly mixed.SELECTED DRAWING: Figure 8
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