A dryer for drying an ink image formed on a recording medium is provided. The dryer includes a selective heating dryer, a uniform heating dryer, and a controller. The selective heating dryer is disposed on an upstream side of a feeding path of the recording medium, and performs a first-time drying of the ink image under an output condition in which an amount of cockling becomes equal to or less than a given amount. The uniform heating dryer is disposed on a downstream side from the selective heating dryer on the feeding path, and performs a second-time drying of the ink image after the selective heating dryer performs the first-time drying. The controller changes the output condition of the selective heating dryer in accordance with image information of the ink image, when the ink image is formed with a conductive-particle-containing ink.