An inkjet printer cradle complementary to an inkjet printer cartridge of a type including a pagewidth printhead, said cradle including an air compressor for producing air to be directed over the pagewidth printhead, a print media transport assembly arranged to convey print media across the printhead, a single motor; and a transmission assembly arranged to couple the single motor to the air compressor and to the print media transport assembly, wherein the transmission assembly includes a direct drive coupling from a spindle of the single motor to the air compressor and a geared coupling from the spindle to the print media transport assembly.