A sheet supplying apparatus includes an alignment member pivotable to an alignment location for blocking and aligning fore-ends of media contained on a loading table, and a transport-allowing location for allowing a medium picked up by a pickup member to be transported, a cam gear including a gear portion partially including a tooth-omitted portion, and a cam portion for switching the alignment member between the alignment location and the transport-allowing location at first and second rotating locations, a swing arm pivotable about a same axis as a rotation axis of a main gear, and first and second swing gears supported by the swing arm to interlock with the main gear, selectively interlocking with the gear portion according to a rotating direction of the main gear, and rotating the cam gear to the first and second rotating locations.

A sheet feeding apparatus includes a sheet supporting portion to support a sheet, a feeding member to contact an upper surface of the sheet supported on the sheet supporting portion and feed the sheet, and a drive motor to rotate in a first direction and in a second direction opposite to the first direction. In addition, a lifting mechanism is connected to the drive motor to lift the sheet supporting portion and lower the feeding member in a case where the drive motor rotates in the first direction, and to lower the sheet supporting portion and lift the feeding member in a case where the drive motor rotates in the second direction.

A rotating body unit includes a rotating body and a frame body. The frame body includes a pair of bearing portions. A mounting portion includes a pair of opposing walls facing each other in a width direction, a mounting space formed between the opposing walls, a pair of bearing support members, and a pair of biasing members. The bearing support members are supported by the opposing walls to be movable in the width direction. The biasing members bias the bearing support members inward in the width direction. When the rotating body unit is inserted into the mounting space, the bearing portions abut on a pair of guide surfaces of the bearing support members and move the bearing support members from support positions to retraction positions, and the bearing support members move from the retraction positions to the support positions to support the bearing portions.

A rotating body unit includes a pair of bearing portions and a first engagement portion. A pair of bearing support members support the bearing portions when at support positions, and release the bearing portions when at retraction positions. An auxiliary tool includes a pair of arm portions and a second engagement portion. When the auxiliary tool is engaged with the rotating body unit mounted in the mounting portion, the arm portions abut on and move the bearing support members from the support positions to the retraction positions. The second engagement portion engages with the first engagement portion after the bearing support members move to the retraction positions. As the auxiliary tool is separated from the mounting portion with the second engagement portion engaging with the first engagement portion, the rotating body unit is pulled out of the mounting space integrally with the auxiliary tool.

A sheet feeding device includes a pickup roller, a lifting/lowering mechanism, and a driver device. The lifting/lowering mechanism includes a restricting member that releasably restricts the pickup roller from being lowered from a lifted position of the pickup roller at the lifted position. In the sheet feeding device, the driver device drives the lifting/lowering mechanism so that the pickup roller is lowered from the lifted position of the pickup roller, and a drive suspend operation is performed in which the driving of the lifting/lowering mechanism by driver device is suspended after a predetermined time during which the pickup roller does not contact a sheet loading tray or a sheet on the sheet loading tray elapses from a time point when the pickup roller is released from being restricted by the restricting member at the lifted position.

A processing system includes a stacker on which at least one medium recorded with an image is stacked, a holding unit configured to hold the medium, a processing path extending from the stacker to the holding unit, a pick roller configured to transport the medium from the stacker to the processing path, a reading unit configured to read the medium transported through the processing path, and a control unit configured to store indication data indicating an index of whether to transport a medium to the holding unit, wherein, when receiving a processing instruction from a user, the control unit is configured to cause the pick roller to transport a medium from the stacker to the processing path, and determine whether to transport the medium to the holding unit, based on read data and the indication data, the read data being acquired by reading the medium by the reading unit.

A sheet feeding apparatus includes a detection unit provided to be movable with respect to a sheet stacking portion and configured to detect a sheet by causing a contact portion to come into contact with an uppermost sheet stacked on a stacking surface, wherein a bottom portion of the sheet stacking portion forms a part of a bottom portion of the sheet feeding apparatus, the sheet stacking portion is provided with a through hole configured to be expose in the case where no sheet is stacked on the stacking surface, the through hole penetrating the stacking surface to a bottom surface of the sheet stacking portion, and the contact portion is positioned inside the through hole in the case where no sheet is stacked on the stacking surface.

A sheet feeding apparatus includes a tray on which a sheet is to be placed, a feeding roller, a separating portion that forms a separation nip to separate sheets, a rotating member provided between the feeding position and the separation nip in a sheet conveying direction, a first detecting sensor, a second detecting sensor, a driving source, and a control portion. The rotating member rotates by being pushed by a leading end of the sheet. The control portion detects a position of a trailing end of a preceding sheet separated by the separating portion by using the second detecting sensor, and detects presence or absence of a subsequent sheet placed on the tray by using the first detecting sensor. Based on detection results of the first detecting sensor and second detecting sensor, the control portion controls the driving source such that the feeding roller starts to feed the subsequent sheet.

A sheet feeding device includes a sheet loading portion which is capable of elevating operation and on which a sheet is loaded, a feeding member for feeding the sheet loaded on the sheet loading portion, the feeding member being capable of elevating movement between a contacting position in contact with the sheet and a distanced position distanced upward from the sheet, and a control portion that controls the elevating operation of the sheet loading portion and the elevating movement of the feeding member. When the feeding member at the contacting position moves to the distanced position, the feeding member is distanced upward from the sheet loaded on the sheet loading portion after the sheet loading portion starts a descending operation.

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.