A document transporting device includes a main body unit that forms an inner side of an inverting path, a cover unit that exposes a portion of the inverting path, a movable unit, a transport roller, a driven roller, and a roller supporting unit that forms an outer side of the inverting path. By receiving a force from the cover unit, the roller supporting unit rotates in a direction in which the driven roller moves away from the transport roller. By receiving a force from the roller supporting unit, the movable unit rotates in a direction in which the movable unit retreats from the main body unit.

A container apparatus includes a first container unit that is movable from a first position at which a recording medium having a first size is to be supplied into an apparatus body to a second position at which a user is to supply the recording medium and that includes an upstream end portion and a downstream end portion in a direction in which the recording medium is to be supplied into the apparatus body with the first container unit positioned at the first position. The upstream end portion and the downstream end portion of the first container unit are located at different heights with the first container unit positioned at the second position.

A sheet conveyance apparatus includes a sheet supporting tray to support a sheet, a sheet conveyance unit to convey the sheet supported on the sheet supporting tray, a first detection sensor to detect the supported sheet at a first detection position, and a second detection sensor to detect the supported sheet at a second detection position farther from a center of the sheet supporting tray in a sheet width direction than the first detection position. In addition, a control unit controls the sheet conveyance unit in a first mode in a case where the first and second detection sensors detect the sheet, and controls the sheet conveyance unit in a second mode in which a sheet conveyance speed is slower than that of the first mode in a case where the first detection sensor detects the sheet and the second detection sensor detects no sheet.

An automatic document feeder includes a media path to route media through the automatic document feeder, at least one media tray to one of supply the media to the media path and receive the media from the media path, and an automated media tray extender at an end of the media tray, the automated media tray extender to be positioned based on a presence of the media in the media tray.

A document conveyance device includes a sheet feeding tray, a conveyance mechanism, a discharge tray, a document pressing member and a supporting mechanism. The document pressing member comes into contact with an upper face of the document discharged from a conveyance path and presses the document downward. The supporting mechanism is configured to be provided in the sheet feeding tray, to support the document pressing member, to allow a shifting of the document pressing member according to an operation for shifting the document pressing member in a discharge direction of the document or an opposite direction to the discharge direction and to inhibit the shifting of the document pressing member against a force applied to the document pressing member by the discharged document.

An image reading apparatus includes a reading unit, a conveyance unit configured to convey the sheet, a support portion configured to support the conveyance unit openably and movably with respect to the reading unit in a vertical direction between an upper position and a lower position, a bundled wire transmitting a signal or electric power to the conveyance unit, and a cover portion configured to cover the bundled wire. The cover portion includes a first cover member provided on the conveyance unit and a second cover member provided movably in the vertical direction with respect to the reading unit. A whole length of the cover portion in the vertical direction in a case where the conveyance unit is located at the upper position is longer than a whole length of the cover portion in a case where the conveyance unit is located at the lower position.

In a drive mechanism, a first engagement portion of a drive member includes a first contact portion capable of contacting with a second engagement portion in a case where a coupling member is at a first position and the drive member rotates in a first rotation direction, a second contact portion capable of contacting with the second engagement portion in a case where the coupling member is at a second position and the drive member rotates in the first rotation direction, and a third contact portion capable of contacting with the coupling member so as to regulate movement of the second engagement portion from the second position to the first position in a rotation axis direction when the coupling member is at the second position and the second contact portion and the coupling member are in a contact state by rotation of the drive member in the first rotation direction.

An automatic document feeder, which is included in an image reading device and an image forming apparatus, includes first and second document trays, a document output tray, a document conveying passage, multiple document conveying bodies, a drive source, a detector, and a controller. The multiple document conveying bodies include a document holding and conveying body to convey and hold the original document sheet on the second document tray. On detection of the original document sheet on the second document tray while conveying a different original document sheet from the first document tray, the controller stops feeding the different original document sheet, causes the different original document sheet downstream from the document holding and conveying body in a document conveying direction to be conveyed to the document output tray, and stops the drive source after the different original document has been conveyed to the document output tray.

An image reading apparatus according to an embodiment of the present invention includes: an image sensor to read a document; a movement unit configured to relatively move the document and the image sensor by using a motor as a drive source; an output unit configured to output data of a plurality of colors based on accumulated light-receiving signals by accumulating the light-receiving signals from the image sensor for each color in order for each line in a direction of the movement based on an encoder pulse output from an encoder in accordance with rotation of the motor; and a correction unit configured to perform shading correction for each piece of data of the plurality of colors output by the output unit by using a correction value to correct influence on data of the plurality of colors due to a dark current in the image sensor based on shading data.

Provided is an image reading apparatus including: a line sensor including three light receiving element arrays arranged at a predetermined interval in a sub-scanning direction, and being configured to read an image of an original by the respective light receiving element arrays to generate read data representing the read image, the three light receiving element arrays each including light receiving elements for receiving red light, blue light and green light. These elements are arranged in a main scanning direction; and a reading control board. The reading control board is configured to acquire the read data obtained by the respective light receiving element arrays from the line sensor, to sort a plurality of pieces of read data for every pixel of the same color, and to detect an abnormal pixel that does not exist in the image of the original for each color.