A multifunction peripheral includes an automatic document feeder allowing a document to be conveyed one sheet at a time along a document conveyance path. The document passes through an image reading position midway through conveyance and an image of the document is thereby read. In addition, the angle of tilt of the document is detected on the document conveyance path. If the absolute value of the angle of tilt is less than a first threshold, for instance, tilt correction is not conducted. If the absolute value of the angle of tilt is not less than the first threshold but is less than a second threshold, tilt correction is conducted by image processing. If the absolute value of the angle of tilt is not less than the second threshold, the conveyance of the document is stopped.

An image reading apparatus includes a document feeder, a reading unit configured to read an image of a document fed by the document feeder, a facing member positioned to face the reading unit via a document feeding path, and a detection processing unit configured to perform area detection processing for detecting an area of the document with respect to a read image obtained by the reading unit. The facing member includes a white portion and a gray portion. The reading unit selectively performs normal reading for reading the image of the document with the white portion of the facing member as a background and auto-crop reading for reading the image of the document with the gray portion of the facing member as the background. The detection processing unit performs the area detection processing only in the auto-crop reading.

There is provided a medium transporting device including: a medium placement section on which a medium is placed, a feeding roller feeding a medium from the medium placement section, a motion detection sensor detects a motion of a medium, and a controller that stops feeding of a medium based on a detection value received from the motion detection sensor, in which the motion detection sensor is a two-dimensional sensor including a light emitting section and a light receiving section and detecting a motion of a medium, the medium placement section is provided with a placement detector that acquires information relating to a presence/absence of a medium on the medium placement section, and the controller sets a state of the light emitting section to a non-light emitting state when detection information of the placement detector indicates that a medium is absent on the medium placement section.

An image reading apparatus includes a conveying unit configured to convey a document, a reading unit configured to read an image on the conveyed document, a measurement unit configured to measure a distance from an upper portion of a sheet feeding port for the document to an upper surface of the document, and a control unit configured to, according to the distance measured by the measurement unit, suspend the conveyance of the document by the conveying unit. According to a user operation for reading again the document of which the reading is suspended by the control unit, the conveying unit conveys the document and the reading unit reads the image on the document, and while the document of which the conveyance is suspended is conveyed again, the control unit does not suspend the conveyance of the document based on the distance measured by the measurement unit.

An information processing apparatus includes a setting unit, a detector and a controller. The setting unit sets setting information associating a registered image obtained by reading an image with control information indicating whether input image data is to be stored or not. The detector detects the registered image from the input image data. The controller controls whether or not the input image data including the registered image is stored in a storage based on the setting information.

An image reading device reads two types of documents, a first document having a first size and a second document having a second size larger than the first size. A controller of the device causes the first document reader to read the first document and generate image data when the operation unit accepts a command. The first document reader reads a portion of the second document and generates image data on tilt of the second document when the operation unit accepts a command. The document tilt detector detects tilt of the second document based on the image data for detecting tilt of the second document. The document transporter stops transport of the second document when the document tilt detector detects tilt of the second document. The second document reader reads the second document and generates image data when the document tilt detector detects no tilt of the second document.

A printing system includes a printing apparatus that prints an image on a sheet, a sheet processer that executes sheet processing, and a sheet detection sensor that detects a sheet on which the sheet processing is performed not in association with the printing of an image, where the printing of an image is restricted in response to detection of a sheet by the sheet detection sensor.

An image reading apparatus, having a reader device, a user interface, a communication interface, and a controller, is provided. The controller accepts entry of first receiver-identifying information, in response to entry of a first scan command through the user interface, controls the reader device to read an image of an original material, and stores image data for the read image in relation with the first receiver-identifying information in a predetermined memory area. In response to receiving of a second scan command including second receiver-identifying information that corresponds to the first receiver-identifying information by identifying the same receiver from an information processing apparatus by use of a specific protocol, the controller reads out the image data stored in relation with the first receiver-identifying information corresponding to the second receiver-identifying information included in the second scan command from the predetermined memory area, and transmits the image data to the information processing apparatus.

An image forming apparatus includes a document conveyance unit, an image reading unit, and a control unit that performs an area identification process for identifying, from among a plurality of specific areas in document image data, a specific area including an image corresponding to a page number. The control unit extracts, as reference image data, image data in the specific area identified in the area identification process from the reference document, extracts, as comparative image data, image data in the specific area identified in the area identification process from among a plurality of specific areas in the document image data of a comparative document having a reading order later than the reference document by an extraction interval number, and outputs a confirmation page including combined image data in which the reference image data and the comparative image data overlap. The extraction interval number is a prescribed integer multiple of 10.

An image reading apparatus includes a document feeder, a reading unit configured to read an image of a document fed by the document feeder, a facing member positioned to face the reading unit via a document feeding path, and a detection processing unit configured to perform area detection processing for detecting an area of the document with respect to a read image obtained by the reading unit. The facing member includes a white portion and a gray portion. The reading unit selectively performs normal reading for reading the image of the document with the white portion of the facing member as a background and auto-crop reading for reading the image of the document with the gray portion of the facing member as the background. The detection processing unit performs the area detection processing only in the auto-crop reading.