A document conveying device includes a document tray, a first rotary member, a first motor, a second rotary member, a second motor, a document feed sensor, and a controller. The controller counts a counted time from the time point that the first motor starts to rotate until the leading end of a document reaches the document feed sensor. When the time resulting from subtracting the counted time from a required sheet-to-sheet time interval is longer than the required speed change time, the controller performs deceleration and post-deceleration acceleration for the first motor. The required speed change time is the time required for speed change from the first rotation speed to the second rotation speed.

A document conveying device includes a document tray, a first rotary member, a first motor, a second rotary member, a second motor, a document feed sensor, and a controller. The controller counts a counted time from the time point that the first motor starts to rotate until the leading end of a document reaches the document feed sensor. When the time resulting from subtracting the counted time from a required sheet-to-sheet time interval is longer than the required speed change time, the controller performs deceleration and post-deceleration acceleration for the first motor. The required speed change time is the time required for speed change from the first rotation speed to the second rotation speed.

An image forming apparatus includes a main body, a feeder, and a relay device. The main body forms an image on a sheet. The feeder feeds the sheet toward the main body. The relay device connects the main body to the feeder. The main body is placed on a placement surface. The feeder is arranged opposite to the main body with the relay device therebetween in a direction along the placement surface. The relay device includes a conveyance unit and a casing which houses the conveyance unit. The conveyance unit conveys the sheet fed from the feeder to the main body and rotates relative to the casing with an axis as a pivot thereof. The axis extends in a cross direction intersecting with the placement surface.

An image forming apparatus includes a main body, a feeder, and a relay device. The main body forms an image on a sheet. The feeder feeds the sheet toward the main body. The relay device connects the main body to the feeder. The main body is placed on a placement surface. The feeder is arranged opposite to the main body with the relay device therebetween in a direction along the placement surface. The relay device includes a conveyance unit and a casing which houses the conveyance unit. The conveyance unit conveys the sheet fed from the feeder to the main body and rotates relative to the casing with an axis as a pivot thereof. The axis extends in a cross direction intersecting with the placement surface.

An image reading apparatus includes a feeding roller that includes a first roller and a second roller provided at an interval in a width direction intersecting a medium feeding direction, and feeds a sheet from a placing section; and a skew detection section that detects skew of the sheet fed from the feeding roller. Skew is corrected by giving a difference between a rotation speed of the first roller and a rotation speed of the second roller with respect to at least one of the relevant sheet detected by the skew detection section and subsequent sheets fed following the relevant sheet based on a skew amount in the sheet.

An image reading apparatus includes a feeding roller that includes a first roller and a second roller provided at an interval in a width direction intersecting a medium feeding direction, and feeds a sheet from a placing section; and a skew detection section that detects skew of the sheet fed from the feeding roller. Skew is corrected by giving a difference between a rotation speed of the first roller and a rotation speed of the second roller with respect to at least one of the relevant sheet detected by the skew detection section and subsequent sheets fed following the relevant sheet based on a skew amount in the sheet.

The medium transporting device is arranged so as to face the feeder for feeding the medium in the transporting direction and the surface of the medium transported in the transporting direction, and detects the motion of the medium in the two-dimensional coordinate system including the first axis and the second axis. The two-dimensional sensor is provided in a state in which the first axis and the second axis are inclined with respect to the transporting direction.

The medium transporting device is arranged so as to face the feeder for feeding the medium in the transporting direction and the surface of the medium transported in the transporting direction, and detects the motion of the medium in the two-dimensional coordinate system including the first axis and the second axis. The two-dimensional sensor is provided in a state in which the first axis and the second axis are inclined with respect to the transporting direction.

A sheet conveying device of the present disclosure includes: a conveying portion that conveys a sheet in a conveying direction directed toward an image transfer position; a detection portion that detects a conveyance deviation of the sheet conveyed; a sheet correction portion provided on a downstream side of the conveying portion in the conveying direction; and a speed control portion that controls a displacement speed of the sheet correction portion during a displacement process of the sheet correction portion from a sheet acceptance position to a correction completion position. The speed control portion causes the sheet correction portion to be displaced to a setting position set between the sheet acceptance position and the correction completion position at a predetermined first speed, and causes the sheet correction portion to be displaced from the setting position to the correction completion position at a second speed lower than the first speed.

An inkjet recording apparatus includes, among a plurality of branch conveyance passages, ones with different conveyance distances for a recording medium. Based on the timing of the sensing of the recording medium by a recording medium sensor, a controller controls a switching portion to make it switch the destination of the conveyance of the recording medium to one of the branch conveyance passages.