Image forming apparatus printing images on long recording sheet

An image forming apparatus comprising:

• a manual bypass tray configured to receive a recording sheet having an unspecified length in a sheet feeding direction;
• a long sheet feeding cassette removably attached to the image forming apparatus, and configured to receive a long recording sheet of up to a predetermined length;
• an image forming device that forms an image on the recording sheet;
• a transport device that transports the recording sheet placed on the manual bypass tray and the long sheet feeding cassette, to the image forming device;
• a size storage device that stores therein manual size information indicating a size of the recording sheet placed on the manual bypass tray, and long size information indicating a size of the recording sheet stored in the long sheet feeding cassette;
• an operation device that receives an input of an instruction from a user;
• and
• a control device including a processor, and configured to act, when the processor executes a control program, as:
• a controller that executes a printing operation according to a print job, including causing the transport device to transport the recording sheet from the manual bypass tray or the long sheet feeding cassette, to the image forming device, and causing the image forming device to form an image on the recording sheet;
• a first decider that decides whether the recording sheet size indicated by the manual size information accords with a print size designated by the print job;
• and
• a second decider that decides whether the recording sheet size indicated by the long size information accords with the print size designated by the print job,
• wherein, when the first decider decides, in a case where the print size designated by the print job is longer than the recording sheet size indicated by the manual size information, and the recording sheet is transported from the manual bypass tray to the image forming device, that the recording sheet size indicated by the manual size information discords from the print size designated by the print job, the controller executes the printing operation based on the print job, when an instruction to permit the printing operation is received by the operation device, and suspends the printing operation based on the print job, when an instruction to reject the printing operation is received by the operation device.