An image forming apparatus includes: a housing; a feed tray insertable into and removable from the housing and accommodating a sheet-shaped medium; a feed roller feeding the sheet-shaped medium; an image forming device; and a movement mechanism. The feed tray includes: a first accommodation portion accommodating a roll body, a first sheet-shaped medium being rolled in a roll shape as the roll body; and a second accommodation portion accommodating a second sheet-shaped medium which is shorter than the first sheet-shaped medium. The movement mechanism moves to a first position where the feed roller contacts the first sheet-shaped medium unrolled from the roll body accommodated in the first accommodation portion and a second position where the feed roller contacts the second sheet-shaped medium accommodated in the second accommodation portion.

The rotation of a lifting and lowering plate 56 is controlled such that, in a case where the height of the sheet loaded in a manual feed tray 50 is maximum, a feed roller 51 abuts the sheet at a first abutment position at a first moving velocity slower than a second moving velocity at a position upstream in the movement direction of the feed roller 51 from the first abutment position, and, in a case where the height of the sheet loaded in the manual feed tray 50 is minimum, the feed roller 51 abuts the sheet at a second abutment position at a third moving velocity slower than the first moving velocity at the first abutment position.

A feeding unit includes: a retard roller; a holder section; a protruding section; an accommodating section; a pressing section; a first restricting section; and a second restricting section. The holder section rotatably holds the retard roller. The protruding section serves as a rocking fulcrum of the holder section. The accommodating section accommodates the holder section. The pressing section presses the holder section. The first restricting section restricts movement of the holder section in a retreating direction. The second restricting section restricts movement of the holder section in a direction opposite to the retreating direction. The pressing section is arranged so as to deviate in a Y direction with respect to a virtual line passing through a middle point of the protruding section and a middle point of the first restricting section. The holder section comes into contact with the first restricting section and the second restricting section.

A sheet processing device sandwiches a sheet-shaped medium in a two-ply sheet in which two sheets are overlaid and partially bonded. The sheet processing device includes a separator, a conveyor, and a switching member. The separator separates the two sheets of the two-ply sheet. The conveyor is disposed downstream from the separator in a sheet conveyance direction and conveys the two-ply sheet. The switching member is disposed downstream from the conveyor in the sheet conveyance direction. The switching member switches a conveyance path of the two-ply sheet to convey the two-ply sheet to a fixing path on which fixing processing is performed on the two-ply sheet or a non-fixing path on which no fixing processing is performed on the two-ply sheet.

In a first mode, the control unit controls the driving source such that the rotary feeding member starts to move toward the first position based on an elapse of a first time since the detection portion detected a leading edge of the sheet, and positions the rotary feeding member at the first position when a trailing edge of the sheet passes through the separation nip. In a second mode, the control unit controls the driving source such that the rotary feeding member starts to move toward the first position based on an elapse of a second time longer than the first time since the detection portion detected the leading edge of the sheet, and positions the rotary feeding member at a position separated more from the stacking portion than the first position when the trailing edge of the sheet passes through the separation nip.

An image recording apparatus having a recorder, a first driving device, a second driving device, a driving-force transmission device, a sensor, a memory, and a controller to conduct a conveying process and a recording process alternately and repetitively, is provided. In the conveying process, on condition that a rotationally driven amount of the first driving device exceeded a target rotation amount, the controller conducts feedback control on the first driving device to rotate reversely. On condition that the first driving device was rotationally driven reversely under the feedback control, the controller stores a maximum value and a stopping value in the memory, determines a correction value, and determines a post-correction rotation amount based on the target rotation amount and an amount corresponding to the correction value, and in the conveying process, the controller drives the first driving device rotationally by the post-correction rotation amount.

A medium conveying apparatus includes a feed roller, a brake roller, a motor to generate a driving force, a first transmission mechanism to transmit the driving force to the brake roller through a first torque limiter, to rotate the brake roller in a direction opposite to a medium feeding direction, a second transmission mechanism to transmit the driving force to the brake roller through a second torque limiter, bypassing the first torque limiter, to rotate the brake roller in the direction opposite to the medium feeding direction, and a processor to detect media multi-feed, and perform control in such a way as to transmit the driving force to the brake roller by the second transmission mechanism and also cause the feed roller to be driven to rotate in the direction opposite to the medium feeding direction by the brake roller, when the media multi-feed is detected.

A sheet feeding apparatus includes a storage portion, a sheet supporting portion, a feed portion, a drive portion to output driving force that lifts the sheet supporting portion, and a rotation shaft rotatably supported by the storage portion and including an engaging portion disposed on one end side in an axial direction of the rotation shaft. The engaging portion engages with the drive portion, and a pressing portion is fixed to the rotation shaft and presses the sheet supporting portion from below when the rotation shaft is rotated by the drive portion. A rotary damper joins with the rotation shaft on another end side of the rotation shaft and reduces rotary motion of the rotation shaft. The pressing portion is disposed between the engaging portion and the rotary damper in the axial direction.

A sheet feeding device includes a conveyance rotator, a separation rotator, a torque applier, a torque control circuit, and a torque transmission switcher. The conveyance rotator conveys a sheet in a sheet feeding direction. The separation rotator sandwiches the sheet together with the conveyance rotator. The torque applier applies a reverse torque to the separation rotator in a sheet reversing direction to reverse the sheet. The torque control circuit controls the reverse torque applied to the separation rotator to be equal to or less than a given value. The torque transmission switcher switches, between a transmission state and a non-transmission state, a state of a torque transmission path between the torque applier and the separation rotator. The transmission state is a state in which the reverse torque is transmitted. The non-transmission state is a state in which the reverse torque is not transmitted.

An image processing apparatus includes: a support surface configured to support a sheet, a sheet feeding roller configured to feed the sheet in a conveying direction, a separation member for separating the sheet one by one and positioned downstream of the sheet feeding roller in the conveying direction, and a regulating member displaceable between a first position where the regulating member abuts against a distal end of the sheet supported by the support surface to regulate passage of the sheet in the conveying direction between the sheet feeding roller and the separation member and a second position that is farther from a conveyance path than the first position and that allows passage of the sheet in the conveying direction. The regulating member has a wall surface that abuts against the distal end of the sheet and includes at least one protrusion on the wall surface.