An image forming apparatus includes: a recording head including first and second head modules, each of the first and second head modules having recording elements arranged to perform a recording operation onto a recording medium, the first head module being arranged in a first orientation on the recording head, the second head module being arranged in a second orientation on the recording head, the second orientation being rotated from the first orientation; a signal processing device configured to select, from print data for one page, print data to be used in one recording operation respectively for the recording elements, and to arrange the selected print data in a prescribed recording element sequence for each of the first and second head modules regardless of the first and second orientations; and a data transfer device configured to transfer the arranged print data for each of the first and second head modules.