Patent ID: 8376493

Claim:
An image forming device comprising: a conveying component that conveys a recording medium; a liquid drop jetting head having liquid chambers including jetting ports that jet liquid drops onto the recording medium conveyed by the conveying component, 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 are controlled 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 other jetting ports that jet liquid drops are controlled so that there becomes a promoted recording rate that is promoted as compared with the standard recording rate, wherein the suppressed recording rate and the promoted recording rate are set so that the suppressed recording rate is smaller than the promoted recording rate, the jetting ports that jet liquid drops so that there becomes a suppressed recording rate are controlled so that ink drops being jetted therefrom are reduced, the jetting ports that jet liquid drops so that there becomes a promoted recording rate are controlled so that ink drops being jetted therefrom are increased, and the jetting ports that jet liquid drops so that there becomes a suppressed recording rate neighbor the jetting ports that jet liquid drops so that there becomes a promoted recording rate.