An image reading device includes: a transport unit configured to transport a medium; an emission unit configured to emit an ultrasonic wave in accordance with a driving voltage and a reception unit configured to receive the ultrasonic wave, the emission unit and the reception unit being disposed so that a transport path for the medium transported by the transport unit is interposed therebetween; a reading unit configured to read the medium; and a control unit configured to detect presence or absence of multi-feed of the medium on the basis of a signal received by the reception unit. The image reading device is configured to switch a posture into any of a first posture or a second posture. The first posture is a posture in which the transport path is sloped relative to a mounting surface. The second posture is a posture in which an angle of the transport path relative to the mounting surface is smaller than that in the first posture. The control unit sets a first driving voltage as the driving voltage when the posture is the first posture, and sets a second driving voltage lower than the first driving voltage as the driving voltage when the posture is the second posture.

A second right-side extension portion entirely overlaps with a first right-side extension portion in a stored state when viewed in a depth direction, and a second left-side extension portion entirely overlaps a first left-side extension portion in a stored state when viewed in the depth direction. Moreover, a right-side gear is provided so as to be located between a right-side first end portion and a right-side second end portion of the first right-side extension portion, and a left-side gear is provided so as to be located between a left-side first end portion and a left-side second end portion of the first left-side extension portion.

A technology that enables downsizing of an apparatus is to be provided. A printing apparatus includes: an accommodating unit configured to accommodate a print medium; a conveyance unit configured to convey the print medium fed from the accommodating unit in a first direction; a printing unit configured to perform printing on the print medium conveyed by the conveyance unit; and a first stacking part configured to stack the print medium, on which printing has been performed by the printing unit, at a first position and a second position which is different from the first position in a second direction intersecting with the first direction, wherein the first stacking part is arranged above the accommodating unit, below the printing unit.

A medium ejection apparatus includes a housing, an ejection roller, and an ejection tray attached to the housing to be able to rotate and having a first surface and a second surface, formed at a back side of the first surface, to stack the medium ejected by the ejection roller. The first surface and the second surface are formed by a single member. The first surface is formed with a first recessed part extending in a medium ejection direction and a first beam part extending in the medium ejection direction and sticking out from the first recessed part. The second surface is formed with a second recessed part extending in the medium ejection direction due to the first beam part and is formed with a second beam part extending in the medium ejection direction and sticking out from the second recessed part due to the first recessed part.