A medium feeder includes a feed roller that feeds a medium loaded on a medium loading section; a transport roller disposed downstream relative to the feed roller; a first driving source that drives at least the feed roller; a second driving source that drives at least the transport roller; and a housing that houses the feed roller, the transport roller, the first driving source, and the second driving source, wherein the housing includes a lower unit that constitutes a lower part of the housing, and an upper unit openable relative to the lower unit, and the first driving source and the second driving source are disposed on both sides relative to a center part of the lower unit in a width direction perpendicular to a medium transportation direction.

A sheet cassette includes a housing, multiple cassettes stacked and provided in the housing, and a rotary cam. The cassettes store a recording sheet. The rotary cam includes multiple pins provided at opposite positions across the axis of rotation of the rotary cam. Adjacent cassettes are offset relative to each other in an offset direction. First receiving parts for receiving the pins are provided one in each of the adjacent cassettes at a first end thereof in the offset direction. The rotary cam rotates with at least one of the pins being in at least one of the first receiving parts of the adjacent cassettes to move the cassettes as connected.

A medium conveyance device includes a first loading base that has a first loading surface formed thereon and is movably supported on a main body, a second loading base that has a second loading surface formed thereon and is movably supported on the first loading base so that the second loading surface is positioned next to with the first loading surface and so that the second loading surface overlaps with the first loading surface, a mechanism that converts motion of the first loading base into motion of the second loading base so that the second loading base is arranged in a position corresponding to a position in which the first loading base is arranged, and an elastic member that is elastically deformed when the second loading base is not arranged in a position corresponding to a position in which the first loading base is arranged.

According to an example, an apparatus to prevent media transport jams may include an actuator to load and advance a media within a media path width. The apparatus may also include a first sensor and a second sensor to detect respective edges of the media, in which the first sensor and the second sensor may be positioned outside of a media action area and on opposite sides of the media path width. The apparatus may further include a controller to prevent the actuator from advancing the media along the media path in response to a detection of one or both of the first edge of the media by the first sensor and the second edge of the media by the second sensor.

An image reading apparatus includes a medium support section that supports a medium to be fed, a reading unit that performs reading on the medium fed from the medium support section, and a mounting section on which the medium to be set on the medium support section is mountable, the mounting section being located outside of a main body including the reading unit.

An image recording device is provided, having a recording unit configured to record an image on a sheet, and a tray disposed below the recording unit. The tray includes a sheet holding surface configured to hold the sheet. Additionally, the image recording device includes a sheet feeder disposed between the recording unit and the tray. The sheet feeder includes a roller for feeding the sheet from the tray. The roller is configured to move between a first roller position in which the roller contacts the sheet holding surface of the tray and a second roller position in which the roller is separated from the sheet holding surface. A return guide, disposed between the recording unit and the sheet feeder, defines a second conveying path to guide the sheet having an image recorded on one side thereof back to the feed guide. The return guide has a first opening configured to accommodate the roller of the sheet feeder when the roller is in the second roller position.

A medium conveying apparatus includes a conveyance guide that is supported by a frame so as to be able to be lifted and lowered, and guides a medium to a conveyance path by sliding along one surface of the medium, a conveyance roller that is rotatably supported by the frame, and conveys the medium by coming into contact with an other surface of the medium, the other surface being on the reverse side of the one surface, and a pinch roller that is supported by the frame so as to be able to be lifted and lowered, and presses the medium against the conveyance roller by coming into contact with the one surface of the medium, wherein the conveyance guide lifts or lowers the pinch roller relatively to the frame, by being lifted or lowered relatively to the frame.

A tray device includes a first tray including a first surface and an abutting portion, and a second tray including a second surface and an abutted portion. The second tray is configured to move with respect to the first tray. The abutting portion includes two abutting surfaces located obliquely with respect to an extending direction of the first surface. The abutted portion includes two abutted surfaces located obliquely with respect to an extending direction of the second surface. A difference between an angle formed by each of the two abutting surfaces and the extending direction of the first surface and an angle formed by each of the two abutted surfaces and the extending direction of the second surface is set larger than a maximum angular difference between the extending direction of the first surface and a movement direction in which the second tray moves with respect to the first tray.

An ultrasonic sensor includes a transmission unit that is disposed on a first axis which is inclined with respect to a normal line of a surface of an object, a reception unit that is provided on a side opposite to the transmission unit of the object, on the first axis, and a transmission control unit that controls drive of the transmission unit. The transmission unit includes a plurality of transmission elements that transmit ultrasonic waves, and the plurality of transmission elements are arranged in a first direction that intersects the first axis in a plane including the normal line and the first axis. The transmission control unit delay-drives the plurality of transmission elements to align a direction of the ultrasonic wave that is transmitted from the transmission unit with the first axis.

A medium processing device includes a processor, a feed roller, a motor, a motive force transmission gear that transmits motive force of the motor to the feed roller, a switching unit that is configured including a main gear and a sub gear that meshes with the main gear and moves in planetary motion around the main gear, and that switches accompanying rotation direction switching of the main gear between a meshed state and a disengaged state between the sub gear and the motive force transmission gear, a load detection unit that detects load of the motor, and a controller. The controller controls the motor and the processor according to the load detected by the load detection unit at switching of the sub gear from the disengaged state to the meshed state.