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 feeding apparatus includes a medium mounting section forming a mounting face for mounting a medium thereon, a feeding roller configured to feed a lowermost medium among mediums mounted on the medium mounting section in a feeding direction, and a movement detection unit configured to output information related to movement of the medium in a direction along the mounting face, wherein based on detection information detected by a medium height detection unit that outputs information related to a height of the medium mounted on the mounting section from the mounting face in abnormality detection processing, when the height is less than a first threshold value, a control unit continues feeding the medium regardless of detection information detected by the movement detection unit or without obtaining detection information detected by the movement detection unit.

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 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 control unit of a medium feeding apparatus is configured to execute a fault detection process to determine that there is a feeding fault when a movement of a subsequent medium in a feeding direction is detected based on detection information of a movement detection unit within a fault detection period that is set after a trailing edge of a preceding medium is detected based on the detection information of the movement detection unit and before feeding of the subsequent medium is started, and the fault detection period set when a size of the medium in a width direction intersecting the feeding direction is a first size is shorter than the fault detection period set when the size of the medium in the width direction is a second size larger than the first size.

A sheet conveying device includes a separation member, a second conveyance member, a third conveyance member, and a first drive control portion. The separation member separates a sheet in contact with a first conveyance member from another at a first position where the first conveyance member comes into contact with the sheet. The second and third conveyance members are respectively downstream of the first and second positions. The first drive control portion stops driving the first conveyance member (1) after the leading edge of the sheet reaches the second position and before the trailing edge of the sheet passes through the first position when the sheet length is not exceeding a specific distance based on a distance between the first and third positions and (2) after the leading edge reaches the third position and before the trailing edge passes through the first position when the length exceeds the specific distance.

A sheet conveying device includes a separation member, a second conveyance member, a third conveyance member, and a first drive control portion. The separation member separates a sheet in contact with a first conveyance member from another at a first position where the first conveyance member comes into contact with the sheet. The second and third conveyance members are respectively downstream of the first and second positions. The first drive control portion stops driving the first conveyance member (1) after the leading edge of the sheet reaches the second position and before the trailing edge of the sheet passes through the first position when the sheet length is not exceeding a specific distance based on a distance between the first and third positions and (2) after the leading edge reaches the third position and before the trailing edge passes through the first position when the length exceeds the specific distance.

A transporting device sends a sheet with the rotation of a first drive roller with the sheet sandwiched between a first drive roller and a driven roller. The sheet is sent to a direction to which a back surface thereof is pressed against a guide surface, and is transported to a second drive roller in a state of being pressed against the guide surface after the guide surface pushing and bending a transport path toward a front surface side. A lifted amount of the sheet from the guide surface is monitored by a sensor, and the transportation is stopped in a case where the lifted amount is equal to or larger than a predetermined amount.

A transporting device sends a sheet with the rotation of a first drive roller with the sheet sandwiched between a first drive roller and a driven roller. The sheet is sent to a direction to which a back surface thereof is pressed against a guide surface, and is transported to a second drive roller in a state of being pressed against the guide surface after the guide surface pushing and bending a transport path toward a front surface side. A lifted amount of the sheet from the guide surface is monitored by a sensor, and the transportation is stopped in a case where the lifted amount is equal to or larger than a predetermined amount.

A medium-feeding apparatus includes a movement detector configured to output information on movement of a medium in a first direction parallel to a feeding direction and in a second direction intersecting the feeding direction. A control unit is configured to perform abnormal feeding processing depending on the movement of the medium in the second direction. In the abnormal feeding processing, the control unit stops feeding of the medium when a first value indicating the movement of the medium in the first direction is within an allowable range and when a second value indicating the movement of the medium in the second direction exceeds a threshold, and continues feeding of the medium when the first value is outside the allowable range.