A sheet material feeding device includes: a housing; a cassette configured to internally house a sheet material, and capable of being pulled out of the housing and housed into the housing; a rear-end regulating member provided inside the cassette and configured to regulate a position of an upstream end of the sheet material in a sheet material feeding direction; a rear-end displacing member supported by the rear-end regulating member and configured to swing along the sheet material feeding direction; a sliding member provided for the cassette, having an engagement part to be engaged with the rear-end displacing member, and configured to slide toward a downstream side in the sheet material feeding direction to displace the rear-end displacing member toward the downstream side in the sheet material feeding direction; and a first energizing member configured to energize the sliding member toward an upstream side in the sheet material feeding direction.

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.

An image forming apparatus includes a stopper member supported either in a storage posture stored in a storage part by turning in an upstream side or a restriction posture to prevent falling down of a sheet from a sheet stacking face by turning in a downstream side. The storage part has a first recess and a second recess deeper than the first recess. The stopper member has a pressed part supported in the second recess movably upward and downward and a main part supported in the first recess in the storage posture. When the pressed part is pressed downward in the storage posture, the pressed part is moved downward and the main part comes into contact with a downstream side edge of the first recess, the stopper member is turned around the downstream side edge into the restriction posture through a protrusion posture protruding above the sheet stacking face.

A sheet member supply device (40) of an image forming apparatus (1) includes a sheet member stacking plate (43) in which sheet members (S) are stacked on the upper surface, a pickup roller (51) which makes contact with, from above, the uppermost layer of the sheet members (S) stacked on the sheet member stacking plate (43), a stacking plate displacement mechanism (44) which displaces the sheet member stacking plate (43) upward, a motive power transmission mechanism (60) which transmits motive power obtained from a drive source (45) to the stacking plate displacement mechanism (44) and a paradox planetary gear mechanism (65) which is provided in the motive power transmission mechanism (60). In this way, with a simple configuration, it is possible to reduce the unintentional downward displacement of the stacking plate.

An image forming apparatus includes a removable sheet support tray. The sheet support tray includes a sheet support surface providing a sheet support area above the sheet support surface. The support tray also includes a stopper portion movable between a restraining position and a non-restraining position that is a different position from the restraining position. In a state where the stopper portion is located at the restraining position, the stopper portion includes a surface disposed adjacent to and downstream of the sheet support area in a first direction, the first direction extending along at least a portion of the sheet support surface.

A sheet discharging device includes: a medium supporting portion configured to support a transported medium, the medium supporting portion being configured to swing; a stacking portion which is provided vertically below the medium supporting portion and on which the medium dropped from the medium supporting portion is stacked, the stacking portion being configured to move up and down; and a detecting portion that detects swinging of the medium supporting portion, in which the detecting portion detects the swinging of the medium supporting portion when the medium on the rising stacking portion comes into contact with a lower surface of the medium supporting portion.

An image reading apparatus includes a first stacking unit having a stacking surface, and an abutment portion that abuts a document stacked on the stacking surface, a feeding unit, a reading unit, a second stacking unit, a first detection unit, a rotating shaft, a drive unit, and a control unit. The second stacking unit receives the document fed by the feeding unit and read by the reading unit. The first detection unit detects presence or absence of the document stacked on the first stacking unit. The drive unit rotates the first stacking unit around the rotating shaft rotatably supporting the first stacking unit. At a predetermined timing after the first detection unit detects the absence of the document on the first stacking unit, the control unit controls the drive unit to rotate the first stacking unit in a direction with which the abutment portion is lowered.

An image reading apparatus includes a stacking unit having an abutment portion, a feeding unit, a conveyance unit, a reading unit, a rotating shaft, and a drive unit. The abutment portion abuts a document end in a widthwise direction of a document stacked on the stacking unit. The conveyance unit conveys the stacked document fed by the feeding unit in a feeding direction perpendicularly intersecting the document widthwise direction. The reading unit reads an image of the document. The drive unit rotates the stacking unit, rotatably supported by the rotating shaft, around the rotating shaft. The rotating shaft is disposed at a position where at least a part of the rotating shaft exists between one end and other end in the document widthwise direction of a document having a maximum width conveyable by the conveyance unit in a state where the maximum width document abuts on the abutment portion.

An image reading apparatus includes a first stacking unit having a stacking surface, and an abutment portion that abuts a document stacked on the stacking surface, a feeding unit, a reading unit, a second stacking unit, a detection unit, a rotating shaft, a drive unit, and a control unit. The second stacking unit receives the document fed by the feeding unit and read by the reading unit. The detection unit detects presence or absence of the document stacked on the second stacking unit. The drive unit rotates the first stacking unit around the rotating shaft rotatably supporting the first stacking unit. Based on the detection of the absence of the document on the second stacking unit by the detection unit, the control unit controls the drive unit to rotate the first stacking unit in a direction with which the abutment portion is lowered.

According to one embodiment, a manual sheet feeding device includes a pressure plate, a first displacement member, a first input member, a second displacement member, a second input member, a coupling member, a restricting member, and an elastic member. The first displacement member displaces the plate from a first side to a pressure and a release position. The first input member displaces the first displacement member to a first and a second position. The second displacement member displaces the plate from a second side to the pressure and the release position. The second input member displaces the second displacement member to a third and a fourth position. The coupling member gives the second input member a second displacement amount larger than a first displacement amount. The restricting member restricts a displacement amount of the second input member. The elastic member elastically deforms when the amount of displacement is restricted.