An apparatus including a control device, a first processing device, a second processing device, and one or more memories, wherein the first processing device issues a signal based on the first processing device having processed a predetermined amount of data in received image data so that an engine controller starts to obtain image data from the one or more memories, wherein the control device provides dummy data to the first processing device so that the first processing device processes the dummy data and issues the signal, wherein the control device provides to the one or more memories, not via the first or second processing device, image data to be printed, wherein the second processing device discards the dummy data processed by the first processing device, and wherein the engine controller obtains the image data to be printed from the one or more memories.