A sheet conveyance apparatus includes a body portion, an openable portion supported by the body portion and configured to be opened and closed with respect to the body portion, a first movable guide supported by the openable portion and movable to a first position at which a first conveyance path through which a sheet is conveyed is formed between the first movable guide and the openable portion and a second position at which the first path is opened, a second movable guide movably supported by the first movable guide, and an abutment portion provided in the body portion. In a state where the openable portion is closed, the second movable guide abut with the abutment portion and is held on a position to form a second conveyance path through which the sheet is conveyed.

A sheet processing apparatus includes a carry-in path for guiding a sheet from a carry-in entrance, a shift roller provided in the carry-in path to relay and transport the sheet, a first transport path positioned on the downstream side of the relay roller to transport the sheet from the carry-in path to a first collection tray, and a second transport path branched off from the carry-in path to transport the transported sheet to a second collection tray. The relay roller shifts the sheet in the direction crossing the transport direction, while the shift by the relay roller is performed after the sheet front end enters the first transport path or second transport path. Thus, it is possible to provide a relatively compact sheet processing apparatus capable of shifting in sorting and shifting sheets, without increasing the carry-in path.

An image reading device includes a first roller that is rotatably supported by a frame, a second roller that is supported by the frame in a rotatable and translatable manner and that presses a medium against the first roller, a joint unit that transmits rotation from a drive shaft to the second roller, a drive unit that rotates both the first roller and the drive shaft, and a read unit configured to read an image on a conveyed medium that is conveyed by the rotation of the both of the first roller and the second roller.

A transport device includes a first rotary part that rotates; a second rotary part that contacts the first rotary part, that forms a pinch region where an object to be transported is pinched between the second rotary part and the first rotary part, and that rotates together with the first rotary part; and a positioning mechanism that positions the second rotary part with respect to the first rotary part. The positioning mechanism includes a swing part that supports one end portion side of the second rotary part, that is supported at one end portion side of the first rotary part, and that is swingable around a rotation center of the first rotary part; and a fixing section that fixes the swing part.

A medium transporting apparatus including a transport belt that transports a medium while suctioning the medium against a transport surface, a first tray on which the medium transported with the transport belt is mounted, and a transport roller configured to move between a transporting position that nips the medium with the transport belt, and a retracted position that is a position distanced away from the transport belt with respect to the transporting position, in which the transport roller is positioned at the retracted position when a single medium is transported with the transport belt and is positioned at the transporting position when a plurality of mediums in a superposed state are transported with the transport belt.

A medium discharging device includes a first tray, a second tray receiving a medium from the first tray, a supporter which is configured to be displaced from a retreat position in the first tray and an advance position above the second tray and which supports the medium, an aligner which is provided in the supporter and that aligns a first end portion which is an upstream end portion in a discharge direction of the medium supported by the supporter, to be displaced together with the supporter, and a restrictor configured to be displaced between a restriction position where an upstream movement of the first end portion of the medium in a position of the aligner in the discharge direction and a non-restriction position where the movement is not restricted, when the supporter is in the advance position.

A medium conveying apparatus includes a pick roller feeding a medium, a separation roller located on a downstream side of the pick roller, a conveyance roller located on a downstream side of the separation roller, a medium sensor being located on a downstream side of the separation roller and detecting the medium, a lift sensor detecting a lift of the medium on an upstream side of the conveyance roller, a passing sensor being located on an upstream side of the separation roller and detecting passing of the medium, and a processor to determine that the medium is a predetermined medium when a lift of the medium and passing of the medium are detected in a predetermined period after the medium is detected, and execute abnormality control when the medium is determined to be the predetermined medium.

A paper sheet post-processing device includes a processing tray, an aligning member that aligns paper sheets on the processing tray, a swingable holder that supports the aligning member, a swinging mechanism that causes the holder to swing, and a control unit that controls the swinging mechanism. The swinging mechanism includes a rotation shaft inserted into a shaft insertion portion of the holder with play in a rotation direction. The control unit controls the rotation shaft to rotate and stop at a predetermined rotation angle position corresponding to a stack height of the sheets stacked on the processing tray, so that the holder is disposed at a contact position. At the contact position, the holder is allowed to swing in a retracting direction with respect to the rotation shaft within a predetermined play range. The play range is set to be larger in proportion to the stack height of the sheets.

A sheet-conveying device includes first, second, and third rotary members, and a switching unit. The first rotary member rotates in one direction to convey, with the second rotary member, a sheet in a first direction and to convey, with the third rotary member, the sheet in a second direction. The switching unit switch from a first to a second state by moving the first rotary member before a trailing end of the first direction conveyed sheet passes through the first and second rotary members. The first state is a state where the second rotary member contacts a first surface of the sheet and the first rotary member contacts a second surface of the sheet. The second state is a state where the first rotary member contacts with the first surface of the sheet and the third rotary member contacts the second surface of the sheet.

A sheet processing apparatus is provided with a carry-in path for guiding a sheet from a carry-in entrance, a shift roller provided in the carry-in path to transport the sheet, while shifting, a carry-in roller positioned on the downstream side of the shift roller to carry the sheet from the carry-in path toward a collection tray, and a punch shift unit provided on the upstream side of the carry-in roller to process an end portion of the sheet in a processing position. The punch shift unit shifts in the same direction as the shift roller, a shift amount of the punch shift unit is set to be equal to a shift amount of the shift roller or more, and the end portion processing unit is thereby already positioned in an end portion processing position or a position near the processing position after shifting the sheet.