An original document tray for a scanning and printing apparatus includes original document guides for guiding an original document in the original document tray into a scanning unit by determining or regulating a widthwise position of the original document, and manual-feed sheet guides provided with the original document tray for guiding a manual-feed sheet to be supplied to a printing unit by determining a widthwise position of the manual-feed sheet. The manual-feed sheet guides can be adjusted manually in the widthwise direction. The original document guides are disposed on an original document supporting surface of the original document tray on which the original document is placed, and the manual-feed sheet guides are disposed on a side opposite the original document supporting surface. The original document guides can also be moved manually in the widthwise direction and move in conjunction with the manual-feed sheet guides.