Systems and methods are provided for document handling. Non-vision detection systems may be capable of detecting the dimensions, orientation, and/or position of a single sheet, or multiple stacked sheets. A document scanning arrangement may be capable of double sided scanning for sheets with various characteristics. The systems and methods provided may accommodate high throughput and rapid digitization of various types of documents, at a high quality.

An image forming apparatus includes an image reading unit. When printing a postcard is selected, a preview screen including a preview image about an image on a communication side of the postcard read by the image reading unit is displayed on a display. At this occasion, an instruction image indicating an orientation of an address side of the postcard is also displayed. When it is instructed to turn over the preview image on the communication side, the preview screen including the preview image on the address side is displayed on the display. When the orientation of the address side and the orientation of the communication side do not coincide with each other, or when they are not as intended by a user, printing is performed after the image on the communication side is rotated according to the user's operation.

An image processing device comprising a processor configured to: determine presence or absence of a face image for each of a plurality of pieces of image data read from at least one image presenting medium, and decide a relationship for the plurality of pieces of image data, based on a result of the determination. The relationship is a front and back of the image presenting medium or a page order, and the processor is further configured to: decides that image data including a face image is on a front side of the image presenting medium or on a page before image data not including a face image.

There is provided an image forming apparatus capable of preventing deterioration in accuracy of image position adjustment due to erroneous detection of a marker.

An image forming apparatus includes a document tray in which a document is to be set, a medium container that contains a recording medium, a document detection sensor that detects a document set in the document tray, a medium detection sensor that detects a recording medium contained in the medium container. A hardware processor executes a copy operation of forming an image obtained by scanning a document set in the document tray on a recording medium, determines to automatically execute the copy operation in case an elapsed period of time between a document detection time when a document is detected by the document detection sensor and a medium detection time when a recording medium is detected by the medium detection sensor is equal to or smaller than a predetermined operation period of time, and automatically executes the copy operation based on determination of automatic execution of the copy operation.

A printer for printing on a long sheet includes a print data divider and a verification processor. The print data divider outputs a plurality of segments of divided print data divided at the boundary of areas from standard print data containing print contents in each of the areas obtained by dividing a standard sheet into a plurality of the areas. The verification processor compares the size of the long sheet with the size of the area included in the standard sheet and rotates the divided print data if it is determined from a result of the comparison that the rotation is necessary.

An image forming apparatus that reads a print position adjustment chart using an auto document feeder (ADF) and specifies an appropriate image reading size to include paper edges of the chart is provided.

A position detection device includes a background member, a reader, and processing circuitry. The background member has a higher absorption characteristic in an invisible wavelength region than in a visible wavelength region. The reader opposite the background member irradiates a recording medium having a mark and the background member with light of a visible wavelength to output a visible image or with light of an invisible wavelength to output an invisible image. The processing circuitry is configured to: detect an end position of the recording medium and a position of the mark on the recording medium from a read image output from the reader; and select the visible or invisible image as the read image used for position detection, according to an absorption characteristic of a color material forming the mark read by the reader and an absorption characteristic of the recording medium in the invisible wavelength region.

A placement detection system includes: a placement table; an imaging device that images an object placed on the placement table to generate an input image; and a control device. The control device generates a first binarized image for the input image based on a first threshold value and determines whether the object is placed in a predetermined placement orientation. The control device changes a threshold value for a target pixel to a second threshold value higher than the first threshold value when the object is determined to be placed in the predetermined placement orientation, the target pixel being sandwiched between pixels having pixel levels lower than or equal to the first threshold value and has a higher pixel level than the first threshold value in a first region, generates a second binarized image for the target pixel based on the second threshold value, and detects a shape of the object.

A medium conveying apparatus includes a conveyance roller to convey a medium, an imaging sensor to sequentially generate a line image acquired by imaging the medium conveyed by the conveyance roller, a processor to detect an inclination of the conveyed medium based on at least two first pixels in the line image, determine whether a part of the conveyed medium has passed through a position corresponding to a second pixel located outside the first pixels based on the line image, and stop conveyance of the medium by the conveyance roller when the detected inclination is equal to or greater than a threshold value and the processor determines that a part of the medium has passed through the position corresponding to the second pixel.