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.

A reading device includes a first light source, a second light source, a first reading unit, a second reading unit, a comparison unit, and a correction unit. The first source irradiates an object to be read, with first light having a first transmittance to the object. The second source irradiates the object with second light having a second transmittance to the object. The first reading unit reads the first light from the object to output first image data. The second reading unit reads the second light from the object to output second image data. The comparison unit compares a data difference between the first and second image data. In a case where the data difference is equal to or larger than a threshold, the correction unit corrects data of an image area having the data difference equal to or larger than the threshold in the first or second image data.

A media scanner including an input tray, an output tray disposed above the input tray, a media feeder to advance media along a media path from the input tray to the output tray, an upper scanning device to generate a first scan line, and a lower scanning assembly. The upper scanning device is disposed to face downward to scan a first side of the media. The lower scanning assembly is disposed to face upward to scan a second side of the media. The media path extends from the input tray to below the upper scanning device, to above the lower scanning assembly, and to the output tray. The upper scanning device is disposed at an angle with respect to the media path to cause a front edge of the media advancing along the media path to contact the upper scanning device at or before the first scan line.

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.

Even from a plurality of small documents, their front-side and back-side images to be formed on a recording paper sheet, with alignment and coincidence of the front-side and back-side images of each document between the front and back sides of the recording paper sheet. In an image forming apparatus, an image processing section detects a front-side image of an original document from a scan area read in a first scan by an image reading section, detects a back-side image of the original document from a scan area read in a second scan, and moves or rotates the front-side image and the back-side image of the original document in terms of a whole image of the scan area so that the front-side image and the back-side image of the original document are brought into alignment and coincidence between a front side and a back side of a recording paper sheet.

An image reading apparatus includes a reading unit and a controller. The reading unit reads a first image on a first surface of a sheet and a second image on a second surface of the sheet and generates first and second image data, respectively. The controller determines, based on the first and second image data, whether the first image is at a first edge of the first surface and the second image is at a second edge of the second surface of the sheet. The controller combines the first and second image data into combined image data corresponding to the first and second images if both the first image is at the first edge and the second image is at the second edge. The controller processes the combined image data such that a combined image corresponding to the combined image data has a predetermined size.

An image processing device includes a processor configured to: obtain image information obtained by reading a sheet that is folded with an intention that a folding line is formed at a position apart from a sheet center position in a specific direction by a predetermined distance, using an image reading device in a state in which a short folded piece of the sheet faces a sensor surface; obtain positions of two edges that are opposite to each other across a folding back of the sheet in the image information; and detect a deviation amount of the folding line based on the positions of the two edges and the predetermined distance.

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.

A cloud-based document scanning system includes a cloud computing platform having a cloud computing application and a cloud storage system. The system further includes a scanning device communicatively coupled over a network to the cloud computing platform, the scanning device configured to: accept a set of documents; generate a set of digital image files corresponding to the set of documents; store the set of digital image files; and upload the set of digital image files directly to the cloud storage system. Upon receiving a request from the scanning device, the cloud computing application is configured to: access the set of digital image files; apply image processing operations to the set of digital image files in accordance with a plurality of image processing parameters, generate a portable document format document based on the processed image files, and send the portable document format document to a user-selected destination.

According to aspects illustrated herein, methods and systems for retaining duplex scanning information in a scanned output file, is disclosed. The method includes receiving a document for scanning, having multiple pages, wherein each page has a first side such as a front side and a second side such as a back side. Then, a check for selection of a duplex scanning feature by a user, is performed. Upon scanning, an image data representing an image of the document is generated. The image data and the duplex scanning feature selected by the user is processed to generate a scanned output file. The duplex scanning information is generated, while generating the scanned output file. The duplex scanning information is retained in the scanned output file, for later retrieval and use. The duplex scanning information helps identify the first side and the second side in the scanned output file.