A sheet feed device includes: a stacking tray on which sheets are stacked in such a manner as to be capable of being lifted and lowered; and an opening/closing member. When the opening/closing member is open, a sheet stacking surface on which the sheets are stacked is positioned at a position higher, in an upper and lower direction of the sheet feed device, than an uppermost portion of the opening/closing member in the upper and lower direction.

A conveying apparatus includes: a rotation shaft; a conveying roller secured to the rotation shaft; a driven roller that cooperates with the conveying roller to convey a sheet at a nip position; a supporter supporting the rotation shaft rotatably; and a first guide and a second guide opposed to each other and defining a conveyance path guiding the sheet toward the nip position. The first guide and the second guide respectively have first and second guide surfaces defining the conveyance path. The first guide and the second guide respectively have first and second engaging portions engaged with the rotation shaft at positions different from a position of the supporter in the axial direction of the rotation shaft.

An image recording device having a recording unit to record an image on a sheet is provided. The image recording unit includes a feed guide defining a first conveying path; an arm disposed between the recording unit and the tray, the arm having a feed roller rotatably disposed at a free end and configured to feed the sheet in the tray to the first conveying path. The arm pivots between a first arm position, and a second arm position. The return guide pivots between a first return guide position, and a second return guide position. A space occupied by the return guide in the first return guide position overlaps a space occupied by the arm in the second arm position. The return guide is in the second return guide position when the arm is in the second arm position which is retracted from an insertion space occupied by the tray.

A recording-medium feeding device includes a container, a separating mechanism, and a suppressing member. The container accommodates recording media. The separating mechanism includes a driving member, a separating member, and a torque limiter. The driving member comes into contact with and delivers an uppermost recording medium. The separating member separates the recording media one-by-one. When a rotational torque smaller than a predetermined rotational torque is applied to the torque limiter, the torque limiter repels a load of the rotational torque to inhibit rotation of the separating member. When a rotational torque larger than or equal to the predetermined rotational torque is applied to the torque limiter, the torque limiter allows the separating member to be rotationally driven in accordance with the load. The suppressing member suppresses receding movement of the recording media caused by reverse rotation of the separating member when the driving member stops.

A medium transportation device includes a transportation driving roller that transports a medium; a roller unit including a separation roller as a driven roller that is rotated by rotation of the transportation driving roller and a shaft which penetrates a rotation center of the separation roller; a holder that detachably holds the roller unit; and a lock mechanism that switches between an unlocked state in which the roller unit is unlocked from the holder and a locked state in which the roller unit is locked to the holder.

A conveying apparatus includes: a rotation shaft; a conveying roller secured to the rotation shaft; a driven roller that cooperates with the conveying roller to convey a sheet at a nip position; a supporter supporting the rotation shaft rotatably; and a first guide and a second guide opposed to each other and defining a conveyance path guiding the sheet toward the nip position. The first guide and the second guide respectively have first and second guide surfaces defining the conveyance path. The first guide and the second guide respectively have first and second engaging portions engaged with the rotation shaft at positions different from a position of the supporter in the axial direction of the rotation shaft.

A transport apparatus includes an accommodating unit that accommodates a recording medium and that is mounted to be capable of reciprocating with respect to a body portion, a loading plate that is provided in the accommodating unit to be movable up and down and that is loaded with the recording medium, a lifting unit that moves up the loading plate to a position where the recording medium is able to be fed by winding wires connected to opposite end portions of the loading plate to suspend the loading plate, and moves down the loading plate by feeding the wires, and a receiving member that is provided on a bottom surface of the accommodating unit and that receives abutments provided on the loading plate when the loading plate moves down.

A sheet conveying apparatus includes a first roller, a first guide, a second guide, a second roller, and a third roller. The first guide is configured to guide the sheet conveyed by the first roller and includes a first guide surface and a first edge portion located downstream of the first guide surface in a sheet conveying direction. The second guide, disposed downstream of the first guide, includes a second guide surface and a second edge portion located upstream of the second guide surface. The second roller is disposed downstream of the first roller and above the first roller. The third roller is disposed at a position more proximate to the second guide surface than the second roller. When projected on a cut plane orthogonal to an axis of the third roller, at least of a part of the second edge portion overlaps the third roller.

A tray drawer and a multi-function printer using the same are provided. The drawer includes a tray body, a handle and an elastic element. The handle is connected to the tray body and includes a handle portion and a first engagement portion. The first engagement portion is connected to the handle portion, wherein when the tray body is at a lock state, the first engagement projects from a first position-limit portion. The elastic element connects the first engagement portion to the tray body. There is no relative motion between the first engagement portion and the handle portion.

A sheet feeding device, which is included in an image forming apparatus, includes a roller detachably attached to the image forming apparatus and configured to feed a sheet in a sheet conveying direction, a shaft configured to engage with the roller and transmit a driving force to the roller, a movable body configured to rotate in a direction of rotational axis and includes a holding portion configured to engage with the second engaging portion of the roller and rotatably hold the roller and a guide configured to guide attachment of the second engaging portion of the roller to the holding portion, and a biasing body configured to apply a biasing force and bias the movable body from a drive receiving side to a drive transmitting side.