Abstract: A raster image conversion device is inputted with printing data and converts this printing data into raster image data to be outputted to a printing device. A storage unit stores printing environment data stipulating conditions for converting the printing data into the raster image data. An operating unit sets or edits the printing environment data. A conversion processing unit converts the printing data into the raster image data, based on the printing environment data. The printing environment data includes printing template information having a plurality of printing slots. The operating unit comprises an operating mode enabling the printing template information to be generated or edited. The conversion processing unit is inputted with or creates printing data made up of a plurality of pages, and, based on the printing template information, allocates a printing position and printing range of each page of the printing data to the printing slots.