A disclosed image forming apparatus includes a line-type liquid discharging head including nozzles configured to jet liquid droplets. The nozzles are aligned in a sheet width direction. The line-type liquid discharging head includes plural nozzle rows each including an alignment of a plurality of the nozzles configured to discharge liquid droplets of the same color. A distance L 1 between the nozzle rows is L 1 =T 1 1×V 1 , where T 1 is a liquid transfer amount impregnating time of a standard sheet and V 1 is a sheet conveying speed.