A recording apparatus includes: an apparatus body that includes a recorder that performs recording on a medium; an opening-and-closing member that is able to be opened away from and closed toward the apparatus body; a unit module that is detachably attached to an attachment portion configured to become exposed by opening the opening-and-closing member, and constitutes a part of a first medium transportation path when attached to the attachment portion; a second medium transportation path that is provided above the first medium transportation path; and a path forming member that is located above the attachment portion and forms a part of the second medium transportation path; wherein the path forming member is retracted from the second medium transportation path and advances onto the opening-and-closing trajectory of the opening-and-closing member when the unit module is detached from the attachment portion.

In some examples, printing device performance analysis may include actuating a motor to operate a first separation tire of a printing device in a first rotary direction. The first separation tire may be operable adjacent to a second separation tire rotatable in a second rotary direction that is opposite to the first rotary direction to separate physical media. Printing device performance analysis may further include actuating the motor to operate the first separation tire in the second rotary direction, and determining whether a motor torque difference of the motor between the first and second rotary directions is greater than a predetermined threshold.

In some examples, printing device performance analysis may include actuating a motor to operate a first separation tire of a printing device in a first rotary direction. The first separation tire may be operable adjacent to a second separation tire rotatable in a second rotary direction that is opposite to the first rotary direction to separate physical media. Printing device performance analysis may further include actuating the motor to operate the first separation tire in the second rotary direction, and determining whether a motor torque difference of the motor between the first and second rotary directions is greater than a predetermined threshold.

An image forming apparatus includes a feeding unit, a detection unit provided downstream of the feeding unit, a measurement unit that measures a measured time from the start of conveyance of a recording material to the detection of the recording material, and a determination unit that performs renewal determination for determining whether the feeding unit has been replaced with a new feeding unit. Thus, replacement of the feeding unit with a new feeding unit can automatically be detected.

An image forming apparatus includes a feeding unit, a detection unit provided downstream of the feeding unit, a measurement unit that measures a measured time from the start of conveyance of a recording material to the detection of the recording material, and a determination unit that performs renewal determination for determining whether the feeding unit has been replaced with a new feeding unit. Thus, replacement of the feeding unit with a new feeding unit can automatically be detected.

A medium conveying apparatus includes a storage device, a feed roller to feed a medium, and a processor to determine whether a conveyance abnormality of the medium fed by the feed roller has occurred, store in the storage device that the conveyance abnormality has occurred and stop feeding of the medium when the processor determines that the conveyance abnormality has occurred, and notify a user of a cleaning instruction or a replacement instruction of the feed roller based on an occurrence degree of the conveyance abnormality for a plurality of media fed by the feed roller.

A sheet feeding device includes a stacking tray for stacking a sheet; a sheet detector for detecting presence/absence of the sheet on the stacking tray; a feeder for feeding the sheet detected by the sheet detector; an LED, provided adjacent to the sheet stacked on the stacking tray, for emitting light; a display, provided substantially in parallel with an optical axis of the LED, for being illuminated by the light emitted from the LED; a reflector, provided opposed to the display portion, for reflecting and scattering the light emitted by the LED, toward the display; and a controller for controlling emission of the light of the LED on the basis of a signal outputted by the sheet detector.

A sheet conveying apparatus includes a pair of regulating units both of which are movable in a width direction in a document placement unit, a detection processing unit that detects a separation distance between the pair of regulating units, a restriction processing unit that restricts execution of a specific process of conveying a document when a difference between the separation distance detected at a specific timing and a reference distance exceeds a threshold value, and a cancellation processing unit that cancels the restriction on execution of the specific process when the separation distance detected after the restriction on execution of the specific process by the restriction processing unit is the same as the separation distance detected before the detection timing of the separation distance and on or after the specific timing.

A sheet feeding apparatus includes a first detection device that outputs a first signal upon detecting a stacked sheet and outputs a second signal upon detecting no sheet, and a second detection device that outputs a third signal when a sheet stacking member is above a predetermined position and outputs a fourth signal in a case where the stacking member is below the predetermined position A control unit controls movement of sheet stacking member by restricting movement of the stacking member when the second signal is output and the third signal is output when power of the sheet feeding apparatus is turned on. The second detection device includes a switch that emits the third signal while abutting a moving member that moves with the sheet stacking member and emits the fourth signal while being separated from the moving member.

An image forming apparatus includes a sheet separation device, a first sheet feeder, a second sheet feeder, an image forming device, and circuitry. The sheet separation device is configured to separate a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at a bonding portion of the two-ply sheet. The first sheet feeder is configured to feed the two-ply sheet. The second sheet feeder is configured to feed an inner sheet to be inserted between the two sheets. The image forming device is configured to form an image on a surface of the inner sheet. The circuitry is configured to cause the first sheet feeder to feed the two-ply sheet, perform a sheet separating operation on the two-ply sheet and cause the second sheet feeder to start feeding the inner sheet before completion of the sheet separating operation on the two-ply sheet.