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.

A medium feeding device includes: a medium mounting section that a medium is mounted; a feeding unit that feeds the medium in a feeding direction; a separation unit that separates the medium with the feeding unit; an operation detection unit that is disposed at a position facing a surface of the medium in the medium mounting section and detects a movement of the medium in the feeding direction; an interval forming unit that forms an interval in the feeding direction between a trailing end of a first medium which is the lowest medium fed among media mounted on the medium mounting section and a trailing end of a second medium which is bound with the first medium and stacked on the first medium; and a control unit that stops feeding of the medium based on a detection interval by a detection value of the operation detection unit.

An image forming apparatus includes an apparatus body and a moveable unit. The apparatus body includes an image forming device and a restriction portion. The moveable unit includes an image reading device and is detachably attached to the apparatus body. The moveable unit is opened and closed with respect to the apparatus body by rotation about a rotation shaft when the moveable unit is attached to the apparatus body. The moveable unit is attached to and detached from the apparatus body by moving in an axial direction of the rotation shaft. The moveable unit further includes a restricted portion that engages with the restriction portion that restricts a movement of the moveable unit in the axial direction. The restriction portion or the restricted portion further includes a deformation portion having elasticity. The deformation portion is deformed so that the moveable unit is attached to and detached from the apparatus body.

A medium transport device includes a feeding unit that can be disposed at a contact position and a retracted position, a first restriction member that rotates between a restriction position and a release position, and a transport guide positioned on a side opposite to the feeding unit with a transport path interposed therebetween. When the first restriction member is positioned at the restriction position, the first restriction member maintains a state in which the feeding unit is positioned at the retracted position by the tip end contacting the feeding unit. When the first restriction member is positioned at the restriction position, the tip end thereof is positioned closer to the mounting portion side than the position of the rotation axis of the first restriction member in the transport direction.

An image reading apparatus includes a stacking portion, a feeding unit, a reading unit, and a discharge portion provided below the stacking portion. The feeding unit feeds a sheet stacked on the stacking portion in a feeding direction. The reading unit reads an image on the fed sheet and the discharge portion discharges the read sheet. The stacking portion includes first and second support surfaces that support the sheet and first and second regulating units to regulate a position of the sheet in a widthwise direction using two opposing ends of the sheet. The second support surface is retractable from a predetermined section above the discharge portion. The first support surface includes a downstream support portion that supports the sheet on a downstream side of the predetermined section in the feeding direction. A part of the second regulating surface is positioned on the downstream support 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.

A document transporting device includes a main body unit that forms an inner side of an inverting path, a cover unit that exposes a portion of the inverting path, a movable unit, a transport roller, a driven roller, and a roller supporting unit that forms an outer side of the inverting path. By receiving a force from the cover unit, the roller supporting unit rotates in a direction in which the driven roller moves away from the transport roller. By receiving a force from the roller supporting unit, the movable unit rotates in a direction in which the movable unit retreats from the main body unit.

An image reading apparatus includes a supporting portion, a feeding portion, a curved conveyance path, a conveyance unit, an image reading unit, a driving source, an output pulley, an input pulley, a first pulley, a second pulley, a driving belt, and a transmission belt. The image reading unit is configured to read an image on a first surface at a location between the first driving roller and the second driving roller in a sheet conveyance direction. The output pulley is fixed to an output shaft of the driving source. The input pulley is fixed to the second driving roller. The first pulley is fixed to the first driving roller. The second pulley is fixed to the second driving roller. The driving belt is wound around the output pulley and the input pulley. The transmission belt is wound around the first pulley and the second pulley.

An image reading apparatus includes a conveyance unit, an image reading unit, a driving source, a first pulley, a second pulley, and a transmission belt. The conveyance unit including a first driving roller and a second driving roller and configured to convey a sheet. The image reading unit configured to read an image on the sheet conveyed by the conveyance unit at a reading position between the first driving roller and the second driving roller in a sheet conveyance direction. The driving source configured to output a driving force for driving the first driving roller and the second driving roller. The first pulley fixed to the first driving roller. The second pulley fixed to the second driving roller. The transmission belt wound around the first pulley and the second pulley. An outer diameter of the second pulley is smaller than an outer diameter of the first pulley.

A sheet feeding device includes a roller pair being mutually non-separable; and a roller pair being mutually separable. The sheet feeding device temporarily stops a sheet in a registration position of the non-separable roller pair and then resumes feeding the sheet. The sheet feeding device feeds sheets such that a following sheet reaches the registration position from the separable roller pair after completion of ejection of a preceding sheet.