A sheet discharge apparatus includes a first conveyance guide having a plurality of first ribs and rotatably supporting a drive roller, with the plurality of first ribs guiding a sheet, and a second conveyance guide to support a holder member movably in a separating direction where the holder member separates from the drive roller. The second conveyance guide includes a plurality of second ribs which form a conveyance path, together with the first ribs, through which the sheet passes, and a regulation portion to regulate movement of the holder member within a range of a first distance in the separating direction from a position where a driven roller is in contact with the drive roller, wherein the first distance is smaller than a second distance which is a distance between the first ribs and the second ribs in the separating direction.

A sheet discharging device has a discharge roller pair and a sheet discharge tray arranged selectively either in a first position where the sheet discharge tray is stowed along a side surface of an apparatus main body or in a second position where the sheet discharge tray, swung downward from the first position, protrudes beyond the side surface. The sheet discharge tray has a hook member holding, with one of rotation shafts of the discharge roller pair acting as an engagement shaft, the sheet discharge tray in the first position by engaging with the engagement shaft. As a result of the discharge roller pair being rotated with the sheet discharge tray located in the first position, an engagement releasing member fixed to the engagement shaft releases the engagement of the hook member with the engagement shaft, and the sheet discharge tray moves to the second position.

An apparatus includes a housing provided with a conveyance path, a conveyance unit which conveys a sheet along the conveyance path, a discharge port from which the sheet conveyed along the conveyance path is discharged, a discharge tray on which the sheet discharged from the discharge port is stacked, and an attitude change unit which changes an attitude of the discharge tray. The discharge tray includes a first sheet receiving surface which is a portion facing the discharge port in a discharge direction of the sheet and on which a leading edge of the sheet lands, and a second sheet receiving surface which is formed at a predetermined inclination with respect to the first sheet receiving surface. The attitude change unit changes the attitude of the discharge tray so that the first sheet receiving surface of the discharge tray is inclined toward the discharge port.

In accordance with an embodiment, an image processing apparatus comprises a sheet feed cassette, an operation lever, a sliding section, a sheet lifting and lowering tray, and a main body rail section. The sheet feed cassette is housed to be capable of being pulled out from an apparatus main body. The operation lever is arranged at the side of the sheet feed cassette and is rotatable around a shaft positioned at the middle in a longitudinal direction. The sliding section is arranged at the rear side of the shaft of the operation lever. The sheet lifting and lowering tray can place a sheet and adjust an inclination thereof in conjunction with the operation lever. The main body rail section is arranged in the apparatus main body and guides running of the sliding section at the time of pulling out the sheet feed cassette.

A sheet post-processing device for, after sheets that are ejected from an image forming device are stored on a storage tray, transporting the sheets in a transport direction to a post-processing position and performing post processing at the post-processing position, including: an aligner configured to align sheets on the storage tray; and a transporter configured to transport to the post-processing position a stack of sheets aligned by the aligner. The transporter includes a first contact member and a second contact member, and transports the stack to the post-processing position by causing the first contact member and the second contact member to simultaneously move in the transport direction while causing the first contact member to be in contact with a rear end portion of the stack in the transport direction and the second contact member to be in contact with a leading end portion of the stack in the transport direction.

A post-processing apparatus includes an ejection tray receiving a recording medium that is ejected, an elastic member urging the ejection tray upward in a vertical direction, a moving mechanism causing the ejection tray to move up and down in the vertical direction, and a driving source driving the moving mechanism.

A sheet conveying device includes a sheet cassette including a first housing, a pressing plate, a raising plate, a first resilient member, and a second resilient member. The sheet conveying device further includes a second housing, a sheet-cassette accommodating portion, a first electrode, a second electrode, a sheet conveyor, a driver, a first signal output device, and a second signal output device. When controlling the driver to move the raising plate to move the pressing plate upward, the controller detects a state change in the first signal output device from not outputting a conduction signal to outputting the conduction signal; upon this detection, starts counting the number of pulse signals; and determines an amount of upward movement of the pressing plate based on the counted number.

Stacker device to stack sheets of print media. The stacker device comprises a tray to stack the sheets. The tray comprises an M-shaped tray section to apply an M-shaped profile to a sheet along a direction perpendicular to the sheet's advance direction to reduce curling. The stacker device further comprises a roof. The roof comprises at least one adjustable roof portion to limit a height of a curl of the sheet.

The sheet feeding apparatus includes a first cursor. The first cursor comes in contact with a side face of a stack of sheets, and can move between a restriction position and a retracted position. The lift plate includes a fixed plate and a movable plate. The stack of sheets is movable together with the movable plate in the push-in/pull-out direction. When the sheet storage unit is pushed into the apparatus body, the first cursor moves by inertia of the stack of sheets, against an urging force of an urging member, toward the retracted position. After the sheet storage unit has reached the accommodated position, the first cursor pushes the stack of sheets by resilience of the urging member to move to the restriction position.

When a paper feeding ray is set, an arm of a one-armed pinion makes a contact with an abutting member formed in a main unit to which the paper feeding tray is attached. When the paper feeding tray is pushed in, the arm is pushed by the abutting member, the one-armed pinion rotates as the rack member moves, and the one-armed pinion moves in a direction into the paper feeding tray. When a spring is stretched, a bottom plate push-up member rotates up on its rotation center and rises by a predetermined angle to press a bundle of stacked paper sheets against a feed roller, so that the paper sheets can be fed.