An image forming device is provided. The image forming device includes: a liquid drop jetting head having liquid chambers including jetting ports that jet liquid drops onto a recording medium, and a flow path that supplies or recovers liquid to or from the respective liquid chambers; and a control component controlling the liquid drop jetting head so that, among a plurality of and at least some of the jetting ports at a same flow path, jetting ports that jet liquid drops so that there becomes a suppressed recording rate that is suppressed as compared with a predetermined standard recording rate in accordance with image information expressing an image to be formed on the recording medium, and jetting ports that jet liquid drops so that there becomes a promoted recording rate that is promoted as compared with the standard recording rate, are neighboring.