An image forming apparatus in which at least part of an image scanner is disposed in an area below an original discharge unit and above an image forming unit.

An image reading apparatus includes a first image reading unit, a second image reading unit provided on a side opposite from the first image reading unit with respect to a sheet feeding passage, a first guiding member, a second guiding member, a first unit holding the first image reading unit and the second guiding member, and a second unit holding the second image reading unit and the first guiding member. One of the first unit and the second unit is movable relative to the other unit so as to open the sheet feeding passage.

An image reading device includes a transporting unit that transports a recording medium along a transport path; an image reader that is disposed on one side of the transport path and that reads an image formed on the recording medium that is transported through the transport path; and a rotary body that is rotatably provided, that is disposed on a side opposite to a side where the image reader is set with the transport path being interposed between the rotary body and the image reader, and that includes an elastic body that protrudes toward the image reader.

There is provided an image reading apparatus including a first reading sensor provided in a first reading unit and configured to read one surface of the sheet, a second reading sensor provided in a second reading unit provided to face the first reading sensor and configured to read an image on the other surface of the sheet, a first background portion serving as a reading background of the first reading sensor, a second background portion serving as a reading background of the second reading sensor, and a moving portion configured to integrally move the first reading sensor and the second background portion, wherein the first reading unit includes a sensor case in which the first reading sensor is provided, and the sensor case is fixed to the apparatus main body.

A document conveying device is used in common for a double-sided reading specification in which images on one face and the other face of a document conveyed along a conveying path are read and for a single-sided reading specification in which the image on the one face of the document is read. The document conveying device includes a recess, a cover member and a supporting part. In the recess, a member dedicated to the double-sided reading specification is supported at the double-sided reading specification. The member dedicated to the double-sided reading specification is used for reading the image on the other face. The cover member closes the recess at the single-sided reading specification. By the supporting part, the member dedicated to the double-sided reading specification is detachably supported at the double-sided reading specification and the cover member is detachably supported at the single-sided reading specification.

In accordance with an embodiment, an image forming apparatus comprises a reading section, a gradation conversion section and an image processing section. The reading section positioned at a back surface of a sheet which is a reading object is provided with a back surface part having a predetermined color at the back surface side of the sheet to read at least one surface of the sheet by using the back surface part as a background. The gradation conversion section executes a gradation conversion processing of enlarging a level difference in brightness at a highlight side on image data read by the reading section. The image processing section identifies an area of the sheet part and an area of the back surface part in the image data based on the image data to which the gradation conversion processing is executed.

An information processing apparatus includes a mode setting unit in which a value indicating whether a scanning device is for simplex scanning or duplex scanning is set up, an interface unit that controls whether to enable signal exchange with an external memory based on the value set up in the mode setting unit, and a transfer unit that retrieves image data from the external memory and transfers the image data to an image processing unit. When the value in the mode setting unit indicates that the scanning device is for duplex scanning, the interface unit enables signal exchange with the external memory, and the transfer unit transfers the image data retrieved from the external memory to the image processing unit. When the value in the mode setting unit indicates that the scanning device is for simplex scanning, the interface unit prohibits signal exchange with the external memory.

An image reading apparatus includes a conveying unit to convey a document, first and second reading units, a reception unit, a selection unit, and a setting unit. The first reading unit generates image data form a document first side and the second reading unit generates image data from a second side in parallel with the first reading unit reading. The reception unit receives settings regarding a size, an orientation, and a document opening direction of the document. The selection unit selects either a first reading method causing the first and second reading units to read per the set size, and a second reading method causing the first reading unit to read the first side per the set size and causing the second reading unit to read an entire second side. The setting unit sets image data corresponding to the document second side reading by the second reading method.

Generally, a scanner of the present embodiment, which reads a first surface with a first reading section configured to read the first surface of a sheet and a second surface with a second reading section configured to read the second surface opposite to the first surface of the sheet, executes individual processing on a first reading image of the first surface and a second reading image of the second surface.

An image reading apparatus includes a first scanner configured to read a first image from a front side of a document, a second scanner configured to read a second image from a back side of the document, and first and second offset storage parts configured to store a first offset amount for correcting an inclination of the first image and a second offset amount for correcting an inclination of the second image, respectively. The image reading apparatus is configured to generate, when the first scanner is replaced, a new first offset amount based on the second offset amount, a first inclination amount of the first scanner, and a second inclination amount of the second scanner. The image reading apparatus is configured to correct the first image based on the new first offset amount.