A document size sensing module adapted to a MFP having a transparent platform where a document is adapted to be placed is provided and includes a moving component movably disposed below the transparent platform along a first axial direction, a first sensor, a second sensor, and a control unit electrically connected to the moving component, the first sensor, and the second sensor. The first and second sensors are disposed on the moving component and arranged along a second axial direction. When the control unit drives the moving component to move along the first axial direction, and at least one of the first sensor and the second sensor senses the document, the control unit determines a length of the document according to a distance travelled by the moving component and a width of the document by the first sensor and the second sensor, so as to determine dimensions of the document.

An image reading apparatus is provided with a reader which reads a document, a transport roller which is provided on an upstream side of the reader in a document transport path in which the document is transported and transports the document to a reading position of the reader, and a controller which receives reading data of the reader and controls the transport roller, in which the controller receives the reading data from the reader to acquire a form of the document, and selects whether or not to stop driving of the transport roller based on the form.

An image reading system includes an image reading apparatus including a transport unit configured to transport a document from a bundle of cut documents one by one, a reading unit configured to read an image of the transported document, and a reading control unit, and an external control unit included in an external device coupled to the image reading apparatus, wherein an inclination correction process that corrects an inclination of the image of the document, a size determination process that determines a size of the image as a standard for the bundle of documents, and a size correction process that corrects the size of the image of the document to a specific size determined by the size determination process are performed.

A printing apparatus includes an instruction unit configured to instruct a conveyance unit to convey a first sheet, and a detection unit configured to detect a size of the conveyed first sheet, the detected size being used for image processing for printing on a different sheet from the first sheet. The instruction unit is configured to instruct, before the detection unit detects the size of the first sheet, the conveyance unit to convey a sheet next to the first sheet.

A printing apparatus includes a processor that causes a conveyance unit to convey a first sheet to print an image on the first sheet in a free size printing mode, before a user instruction for starting printing is accepted, and causes the conveyance unit to start conveying a portion of sheets of a plurality of sheets following the first sheet to print a portion of images on the portion of the sheets following the first sheet, before detection of the size of the first sheet. The processor also causes, in the free size printing mode, the conveyance unit to start conveying other sheets, of the plurality of sheets, following the portion of the sheets following the first sheet, to print other images on the other sheets, in accordance with having confirmed detection of the size of the first sheet.

An image reading apparatus includes: a document size detector that detects either a length or a width of a fed document before reading, and associates the document with a standard size equal to or approximate thereto; an image reading device that reads a document and surroundings thereof at a reading position; a background color plate to be read as an image of the surroundings; a document area determiner that determines a document area; and a blank page determiner that determines a blank page determination area for determining whether a document is a blank page or not. When either of the detected length or width is equal to or more than a predetermined threshold value, the blank page determiner determines the blank page determination area, based on the associated standard size, and otherwise determines the blank page determination area, based on the document area.

An image reading device includes a document tray, a linear conveyance path, a curved conveyance path, a document conveyance device, a scanning device, a length detecting device, an operation device, and a controller. A plurality of conveyance rollers are disposed at a predetermined first interval in the linear conveyance path. In the curved conveyance path, a plurality of conveyance rollers are disposed at a predetermined second interval longer than the first interval. When accepting through the operation device an instruction for conveying an original document through the curved conveyance path, the controller allows conveyance of the original document through the curved conveyance path when a length of the original document detected by the length detecting device is not shorter than the second interval or disallows conveyance of the original document through the curved conveyance path when the detected length of the original document is shorter than the second interval.

An image forming apparatus includes: a detection unit that detects a pinch operation that is an operation of increasing or decreasing a distance between two touch positions on a touch panel; an adjustment unit that, upon reception of setting of a size of a non-standard size sheet, adjusts the set size in accordance with the pinch operation; an angle specification unit that specifies, as a pinch operation angle resulting from the pinch operation, an angle formed by a straight line connecting the two touch positions and one of two orthogonal coordinate axes of a coordinate system of the touch pad; and an adjustment amount change unit that changes an adjustment amount for the set size per operation in accordance with whether the pinch operation angle falls within a first angular range or a second angular range that does not overlap the first angular range.

Aspects of the present disclosure provide methods and apparatuses for processing a digital image of a document, for example, to determine whether the document is a long document. An exemplary method generally includes obtaining a plurality of digital images of the document, determining a type of the document, loading one or more pre-defined metrics associated with the document based on the determined type of the document, determining one or more characteristics of the document based on one or more analyses performed on the plurality of digital images of the document, comparing the one or more characteristics of the document with the one or more pre-defined metrics, and determining the document to be a long document based, at least in part, on the comparison.

An image scanning apparatus comprises a pair of regulating members that regulates a position of the document sheet stacked on a stacking unit, at least one of the regulating members being movable in a width direction; and units that detects a length in the width direction between the regulating members, and detects the width of the document sheet conveyed by a conveyance unit; wherein in a case where a difference between the detected length and the detected width of a document sheet is smaller than a threshold, a first sheet-to-sheet interval is set, and in a case where the difference between the detected length and the detected width of the document sheet is larger than the threshold, a second sheet-to-sheet interval which is larger than the first sheet-to-sheet interval is set.