An image forming apparatus includes an image forming unit; a reverse conveying roller; a discharge unit including a reverse conveying path, an openable and closable member, an open/close sensor, a discharge tray, a sheet conveyance unit, and a failure detector; and a controller. If the controller determines that the sheet conveyance unit is in failure based on a detection result of the failure detector and determines that the openable and closable member is closed based on a detection result of the open/close sensor, the controller prohibits discharge of the sheet to the discharge tray and permits conveyance of the sheet to the reverse conveying path, and if the controller determines that the sheet conveyance unit is in failure and determines that the openable and closable member is open, the controller prohibits the conveyance of the sheet to the reverse conveying path.

A medium transport device includes a first transport route for discharging a medium processed by a processing unit to an outer side of a housing in which the processing unit is provided, and a second transport route for discharging a medium processed by the processing unit to the outer side of the housing. The housing has an openable/closeable or detachable cover, and at least one of the first transport route and a route forming member constituting the first transport route and at least one of the second transport route and a route forming member constituting the second transport route to be exposed by opening or detaching of the cover.

An image forming apparatus includes a first detection unit, a second detection unit, a first conveyance unit, a second conveyance unit, which is provided on downstream in the conveyance direction with respect to the first detection unit and is configured to convey sheets, and a control unit. When the first detection unit does not detect a trailing edge of a first sheet before a first timing, the control unit stops the drive of the first conveyance unit and continues drive of the second conveyance unit, and when the second detection unit detects the trailing edge of the first sheet before a second timing later than the first timing, the control unit re-drives the first conveyance unit or stops the drive of the second conveyance unit in accordance with a sheet length of the first sheet in the conveyance direction.

An example bridge module includes a media transport roller to move in a translational direction, a rotatable guide proximate to the media transport roller, a handle coupled to the rotatable guide to cause the rotatable guide to articulate into an open configuration and away from the media transport roller, and an elongated member operatively connected to the rotatable guide, the elongated member to articulate into the open configuration creating an unobstructed pathway to the media transport roller.

A scanner apparatus includes a housing including an insertion port into which a medium is inserted, a discharge port from which the medium is discharged, a conveying roller configured to convey the medium inserted from the scanning insertion port, and a scanning unit configured to scan the medium conveyed by the conveying roller. The scanning insertion port and the discharge port are provided on a +Y direction side of the housing. The housing includes a placement face extending in a −Y direction from the scanning insertion port. The placement face, when a first end of the medium is inserted into the scanning insertion port, is able to support a portion of the medium on a second end side opposite to the first end. The first end of the medium is discharged from the discharge port in a direction on the +Y direction side or in a −Z direction.

A pickup mechanism includes a paper feeding channel, a pickup roller assembly disposed in the paper feeding channel and projecting beyond a top of the paper feeding channel, a paper tray disposed to an upstream of the pickup roller assembly, and a guiding swing arm assembly. The guiding swing arm assembly includes two guiding swing arms mounted adjacent to and spaced from two opposite sides of the pickup roller assembly. Each guiding swing arm includes a pivoting shaft, a stopping block, and an extending arm connected between the pivoting shaft and the stopping block. The two stopping blocks of the two guiding swing arms are disposed between the pickup roller assembly and the paper tray for blocking paper. An axial direction of the pivoting shaft of each guiding swing arm is deviated from a center axis direction of the pickup roller assembly.

A sheet conveyance guide includes a guide portion, a first thrust direction retainer, and a second thrust direction retainer. The guide portion is configured to guide a sheet. The first thrust direction retainer includes a first engagement portion configured to engage with a shaft of a sheet conveying roller configured to convey the sheet, and a guide releaser configured to be operated by a user to release engagement of the first engagement portion with the shaft of the sheet conveying roller. The second thrust direction retainer includes a second engagement portion configured to engage with the shaft of the sheet conveying roller.

In an image forming apparatus, a conveyance section forms a conveyance path and conveys a sheet in a conveyance direction. The conveyance section includes a conveyance roller for rotating around a roller shaft extending in a direction orthogonal to the conveyance direction, and a guide member. The guide member includes a first guide member for rotating around a first axial line to open/close with respect to a first partial region of the conveyance path, and a second guide member for rotating around a second axial line to open/close with respect to a second partial region different from the first partial region. The first axial line extends in a direction parallel to a longitudinal direction of the roller shaft. The second axial line extends in a direction intersecting with the longitudinal direction. The first guide member opens in conjunction with an opening action of the second guide member.

A medium transport device includes a medium guide member, a driving source, a first movement member, a movement restricting member, and a second moving member. The medium guide member is movable between a first guide position, in which the medium guide member guides a medium toward a receiving member on which the medium is loaded, and a second guide position, in which the medium guide member guides the medium from the receiving member into the device. The driving source moves the medium guide member. The first movement member moves the medium guide member in accordance with an operation of the driving source. The movement restricting member is movable together with the medium guide member. The second moving member is movable between a first position, in which the second moving member is located close to the movement restricting member to restrict the medium guide member from moving from the second guide position to the first guide position, and a second position, in which the second moving member is spaced apart from the movement restricting member to allow the medium guide member to move to the first guide position. The second moving member moves from the first position to the second position when the medium guide member moves toward the first guide position in response to an operation of the driving source.

An image forming apparatus has a sheet feed portion, a conveying portion, a control portion, a first sensor having the detection position at a first position in the sheet conveying passage, and a second sensor having the detection position at a second position downstream of the first position in the sheet conveying direction. The control portion performs first sensing to sense whether the sheet's rear end has passed the first position within a first time of the start of the feeding and second sensing to sense whether the sheet's rear end has passed the second position within a second time of the start of the feeding. Even if the control portion is unable to sense passage of the sheet's rear end in the first sensing, when it senses passage of the sheet's rear end in the second sensing, it makes the conveying portion continue feeding the sheet.