Image reading unit

An image reading unit to read an image of an original document, the image-reading unit comprising:

• an original document conveyor including:
• a first original document tray to hold an original document to be read;
• a first original document feeding port to feed the original document placed on the first original document tray;
• an original document conveying path to convey the original document from the first original document feeding port to an original document discharging port;
• an openable second original document tray attached near an intermediate portion of the original document conveying path to hold an original document when opened;
• and
• a second original document feeding port to feed the original document placed on the second original document tray;
• and
• an image reader to read an image of the original document being conveyed along the original document conveying path,
• wherein the original document fed from the second original document feeding port is conveyed to the original document discharging port via a latter half portion of the original document conveying path,
• wherein the second original document tray has a slot to receive an original document,
• wherein the slot is located facing the second original document feeding port when the second original document tray is closed to feed the original document through the slot and the second original document feeding port.