A control device of a printing execution mechanism executing: first control processing including: conveying a sheet to a first position at which the sheet is held by an upstream holding member of the conveyance mechanism, is not held by a downstream holding member of the conveyance mechanism, and a downstream end of the sheet is located between the upstream and downstream holding members; and printing on a first surface of the sheet; and second control processing including: conveying the sheet to a second position at which the sheet is held by the upstream holding member, is not held by the downstream holding member, and the downstream end of the sheet is located at a more upstream side than the downstream end of the sheet located at the first position; and printing on a second surface of the sheet.