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.

A feeding device includes a roller configured to feed an uppermost sheet of a plurality of sheets stacked in a stacking unit, and an inclined separator located downstream of the roller in a feed direction and configured to separate one sheet from another sheet. The inclined separator includes a first separator and a second separator that are arranged along the feed direction. Resistance imparted to each sheet by the first separator is greater than resistance imparted to each sheet by the second separator.

There is provided a stacking apparatus capable of stably conveying and stacking sheets without occurrence of damage or buckling of the sheets in the structure of discharging the curled sheets one by one. In regard to each of a plurality of clamp guides which project toward stacking trays from conveyance means to guide sheets S, the projecting position varies in accordance with a size and an amount of stacked sheets Sa on the stack trays. The stacking tray comprises an inclined surface and a curved surface. An upper guide is located to face the inclined surface by a predetermined interval, and the upper guide is located not to face the curved surface or is located to face it by an interval larger than a predetermined interval.

According to one embodiment, the sheet conveying device includes a tray, an elevating mechanism, a conveyance roller, and a resistance member. The tray stacks a plurality of sheets. The elevating mechanism lifts and lowers the tray in the stacking direction of a plurality of sheets. The conveyance roller conveys the plurality of sheets in the conveyance direction from the upper side in the stacking direction. The resistance member comes into contact with the leading ends of the plurality of sheets in the conveyance direction. The resistance member imparts a sliding resistance larger than that of the sheet stacking surface of the tray to the leading ends of the plurality of sheets that are lifted and lowered by the elevating mechanism.

A sheet feeding apparatus includes a stacking member having a separation unit and an opening portion disposed upstream from the separation unit, a feeding member, and a moving device that includes a slope portion having a slope along which sheets are guided toward the separation unit. The moving device moves the stacking member between a first position where the feeding member and sheets stacked on the stacking member are in contact with each other, and a second position where the feeding member and the sheets are not in contact with each other. When the stacking member is at the first position, the slope portion is disposed at a position lower than the separation unit in a vertical direction. When the stacking member is at the second position, the slope portion is disposed to protrude via the opening portion to be higher than a stacking surface of the stacking member.

An end unit includes: a processing tray including an upper surface on which a medium subjected to recording by a recording unit is mounted; a first paddle and a second paddle that transport, in direction +A, the medium mounted on the upper surface; an alignment section that aligns an edge portion of the medium, which was transported in direction +A by the first paddle and the second paddle, in direction +A; a post-processing section that performs post-processing for the medium aligned by the alignment section; and a load member that applies a load when the medium on the processing tray moves in direction −A opposite to direction +A.

A sheet feed device includes a housing, a tray, a feed roller, an arm, a pad, and a protruding portion. The housing has a sheet conveyance path. The tray includes a bottom plate having a sheet support surface that supports a sheet. The sheet conveyance path extends upward from the sheet support surface. The feed roller rotates about a rotational axis and feeds the sheet supported on the sheet support surface in a first direction. The arm rotatably supports the feed roller. The arm swingably moves about an axis parallel to the rotational axis of the feed roller. The pad is disposed on the bottom plate. The pad has a higher friction coefficient than a friction coefficient of the sheet support surface. The protruding portion protrudes upward from the sheet support surface at a position shifted from the pad in a second direction opposite from the first direction.

A loading device includes a placement portion and a friction member. A single paper sheet discharged from a discharge unit is placed on the placement portion. The friction member is disposed downstream of a downstream end portion of the placement portion in a discharge direction, and includes a contact surface that can come into contact with a back surface, of the single paper sheet, facing the placement portion. The contact surface extends at least in the discharge direction, at a position lower than the height position of the downstream end portion in a height direction.

An end unit includes: a processing tray including an upper surface on which a medium subjected to recording by a recording unit is mounted; a first paddle and a second paddle that transport, in direction +A, the medium mounted on the upper surface; an alignment section that aligns an edge portion of the medium, which was transported in direction +A by the first paddle and the second paddle, in direction +A; a post-processing section that performs post-processing for the medium aligned by the alignment section; and a load member that applies a load when the medium on the processing tray moves in direction −A opposite to direction +A.

A sheet conveying device includes a tray, an elevating mechanism, a conveyance roller, and a resistance member. The tray stacks a plurality of sheets. The elevating mechanism lifts and lowers the tray in the stacking direction of a plurality of sheets. The conveyance roller conveys the plurality of sheets in the conveyance direction from the upper side in the stacking direction. The resistance member comes into contact with the leading ends of the plurality of sheets in the conveyance direction. The resistance member imparts a sliding resistance larger than that of the sheet stacking surface of the tray to the leading ends of the plurality of sheets that are lifted and lowered by the elevating mechanism.