The detection unit includes a first contact member, which comes into contact with a first surface of a recording material and a second contact member, which comes into contact with a second surface of the recording material, the first contact member and the second contact member being disposed so as to oppose each other thus being capable of nipping the recording material, and the first contact member and the second contact member are movable in a direction in which the first contact member and the second contact member nip the recording material, and is rotatable about an axis line extending in a predetermined direction, the predetermined direction being orthogonal to the direction in which the first contact member and the second contact member are movable and being orthogonal to a conveyance direction of the recording material.

A scanner includes a reading unit that reads an image of a paper, a medium feeding portion that is capable of selecting a first feeding mode in which a separation feeding for separately feeding a paper bundle in which a plurality of sheets of paper is overlapped with each other is performed and a second feeding mode in which a non-separation feeding for collectively feeding the paper bundle without separating is performed, and a pair of first transporting rollers and a pair of second transporting rollers that transport the paper fed by the medium feeding portion, in a case in which the medium feeding portion feeds the paper in the second feeding mode, a first driven roller and a second driven roller respectively constituting the pair of first transporting rollers and the pair of second transporting rollers are driven in a rotation direction where the paper is transported.

A medium feeding device includes a container member that accommodates sheet media, a discharging member located further than the media accommodated in the container member in a discharging direction in which the media are discharged, to discharge the media one by one, a hand-over member disposed above the container member to suck the media accommodated in the container member with air and pass the media to the discharging member, a floating device disposed on a side of the media accommodated in the container member to blow air to an upper area of a side end surface of the media to float the media while an upper portion of the media is separated, a detector that detects a separation state of the medium floated by the floating device, and a controller that controls a medium-feeding operation including a pre-feeding blowing operation and a during-feeding blowing operation, the pre-feeding blowing operation serving as an air blowing operation performed by the floating device before the medium is fed, and the during-feeding blowing operation serving as an air blowing operation performed by the floating device from a start of feeding the medium and an end of feeding the medium. While performing the pre-feeding blowing operation or the during-feeding blowing operation, the controller performs detection with the detector, and on condition that a result of the detection fails to satisfy a preset target range, the controller changes a parameter for the medium-feeding operation including at least one of the pre-feeding blowing operation or the during-feeding blowing operation.

An image reading apparatus includes a main body, a touch panel, a document transport path, a feed tray, a feed roller, a separation unit, a reader, a discharge roller, a discharge tray, and a mounting table. The mounting table is provided on an upper side of the main body and includes an upper surface. The mounting table is located at an outer face of the main body, the upper surface serves as a mounting surface on which the source document to be fed or the source document that has been read is mounted. The mounting surface is located at a position higher than an upstream end of the feed tray when the source document is mounted on the mounting surface.

An image reading apparatus includes a main body, a touch panel, a document transport path, a feed tray, a feed roller, a separation unit, a reader, a discharge roller, a discharge tray, and a mounting table. The mounting table is provided on an upper side of the main body and includes an upper surface. The mounting table is located at an outer face of the main body, the upper surface serves as a mounting surface on which the source document to be fed or the source document that has been read is mounted. The mounting surface is located at a position higher than an upstream end of the feed tray when the source document is mounted on the mounting surface.

A medium conveying apparatus includes a conveying roller to convey a medium, and a processor to detect transmission information of an ultrasonic wave transmitted through the medium or thickness information of the medium at a plurality of positions in the conveyed medium, calculate a size of an area in which the transmission information or the thickness information is within a predetermined range in the conveyed medium, determine whether a multi-feed of the medium has occurred, by comparing a value based on the transmission information or the thickness information with a threshold, and execute an abnormality processing when it is determined that the multi-feed of the medium has occurred. The processor changes the threshold according to the size.

A document reading apparatus having a display unit and a placement section on which plural documents is to be placed includes a conveyance unit and a reading unit. The conveyance unit conveys a document placed on the placement section. The reading unit reads a document conveyed by the conveyance unit and generates image data. Based on at least a reading mode being set on the document reading apparatus of reading a plurality of documents of a plurality of different sizes in a single job by the reading unit, first prompting information that prompts placement of the plurality of documents at a center of the placement section in a direction perpendicular to a document conveyance direction in which the conveyance unit conveys the plurality of documents is displayed on the display unit.

A printing apparatus, in a case of performing double-sided printing on a plurality of sheets, performs an overlap reversing operation by controlling a first sheet to stay in a reversing path to position at least a trailing edge of the first sheet relative to a second direction in a conveying path when conveying the first sheet to the reversing path after completion of a printing operation on a first surface of the first sheet, and controls the reversing roller to convey the first sheet and a second sheet fed by a feed roller next to the first sheet, in a state in which the first sheet staying in the reversing path and a leading edge of the second sheet relative to the second direction overlap each other, after completion of the printing operation on a first surface of the second sheet.

A printing apparatus includes a feeding roller, a conveyance roller, a first driving unit configured to drive the conveyance roller, a second driving unit configured to drive the feeding roller, a control unit configured to control the first and second driving units, a detection unit configured to detect an error related to the second driving unit, and a determination unit configured to determine, when the detection unit has detected the error related to the second driving unit, whether to continue the conveyance of a first print medium based on a leading edge position of a second print medium. In a case in which an error is detected by the detection unit, the control unit controls the conveyance of the first print medium by the conveyance roller based on a determination result of the determination unit.

An image forming apparatus is configured to execute a print job for printing on a sheet supplied from a sheet supplying mechanism formed of a first sheet feeding apparatus configured to temporarily stop conveyance of the sheet within a conveyance path thereof or a second sheet feeding apparatus configured not to temporarily stop conveyance of the sheet within a conveyance path thereof. The image forming apparatus includes an image former configured to form an image on the sheet; an obtaining device configured to obtain apparatus information representing a type of an apparatus forming the sheet supplying mechanism; and a controller configured to determine, based on the apparatus information and the sheet supplying mechanism instructed to feed the sheet by the print job, timings to send, to the sheet supplying mechanism, a feed request for starting to feed the sheet and a delivery request for instructing to deliver the sheet.