An image forming apparatus includes an exit tray, a displacing mechanism, and a controller. A sheet is ejected on the exit tray. The displacing mechanism displaces a position of the sheet on the exit tray. The controller controls the displacing mechanism. The controller determines whether the sheet is a valid sheet that meets a predetermined condition or an invalid sheet that does not meet the predetermined condition. The controller controls the displacing mechanism so that a position of the valid sheet differs from a position of the invalid sheet on the exit tray.

An image shooting method, a terminal and a non-transitory computer-readable storage medium are provided. The image shooting method includes: an image shooting target corresponding to a preview photo in a preview interface is recognized; when the image shooting target includes an object associated with a shooting requirement, object shooting requirement information for the shooting requirement of the object of the image shooting target is acquired; and a photo of the object of the image shooting target is shot based on the object shooting requirement information.

An image reading device includes a reading part, a document pressing part, a capacitance sensor, a controller and an informing part. The capacitance sensor detects a capacitance varying in response to opening and closing of the document pressing part and presence or absence of the document on a document placement face. The controller determines that the document pressing part is disposed in the closing position and that the document is placed on the document placement face, based on a detection result of the capacitance sensor. The informing part informs a user of leaving the document on the document placement face behind in a case where the controller determines that the document placement part is disposed in the closing position and the document is placed on the document placement face after a predetermined time elapses from a completion of an image reading in the reading part.

A post-processing apparatus is connected to an image forming apparatus that forms an image on a sheet. The post-processing apparatus includes a post-processor, a sensor, and a controller. The post-processor performs post-processing on the sheet. The sensor is provided in a space where the post-processor operates and provides an output based on a presence of a foreign substance in the space. The controller acquires a first output value from the sensor prior to the image forming apparatus forming the image on the sheet, acquires a second output value from the sensor after the image forming apparatus forms the image on the sheet and before the post-processor performs the post-processing on the sheet, and determines whether or not the foreign substance is present in the space based on the first output value and the second output value.

In a multifunction peripheral according to the present invention, a sheet selection screen for selecting a sheet that is the output destination is presented. A “check sheet size” button is provided on the sheet selection screen. When the “check sheet size” button is operated, an optimal sheet size identification function is started, and a document size identification process including pre-scan is performed. Accordingly, the size of a document is identified. Further, an optimal sheet size identification process is performed. Thus, the optimal sheet size, which is a suitable sheet size corresponding to the size of the document, is identified.

An image reading device includes a reading part, a document pressing part, a capacitance sensor, a controller and an informing part. The capacitance sensor detects a capacitance varying in response to opening and closing of the document pressing part and presence or absence of the document on a document placement face. The controller determines that the document pressing part is disposed in the closing position and that the document is placed on the document placement face, based on a detection result of the capacitance sensor. The informing part informs a user of leaving the document on the document placement face behind in a case where the controller determines that the document placement part is disposed in the closing position and the document is placed on the document placement face after a predetermined time elapses from a completion of an image reading in the reading part.

A medium feeding device includes: a placement unit on which a medium is placed; a pair of edge guides that is provided at the placement unit such that the edge guides are movable in a medium width direction to guide edges of the medium in the medium width direction that is a direction intersecting a medium feeding direction; feeding rollers that feed the medium placed on the placement unit; a path state detection section that detects a detection value in accordance with a state of the medium feeding path; a guide position detection section that detects positions of the edge guides; and a control section that determines whether or not the detection value detected by the path state detection section has exceeded a threshold value.

A document reading apparatus includes a scanner, an input device receiving an input of a width and length, and a processor configured to scan an area specified based on the input length and generate a first image, generate a second image by removing a part of the first image so that a width of the second image is equal to or greater than the input width, detect a background or non-background area in the second image, determine whether the input is appropriate based on whether all sides of an area specified based on the input width and length overlap the background area or none of the sides overlaps the non-background area on the second image, and when the input is appropriate, output a third image in which the background area is removed or the non-background area is extracted from the second image.

A reading method guidance apparatus includes a receiving unit, an acquisition unit, and a guidance unit. The receiving unit receives a document size that is a size of a document as a reading target. The acquisition unit acquires an image of at least a partial area in the document. The guidance unit provides an operator with guidance about a reading procedure when the document is read by a first reading apparatus in plural batches, using a feature amount obtained from the acquired image, the received document size, and a readable size that is a size of an area readable by the first reading apparatus.

An image reading apparatus includes a manuscript reader, a communication device, a distance determination device, a manuscript leaving determination device, a controller, and an approaching person determination device. The manuscript leaving determination device determines whether a manuscript is left in the image reading apparatus. The communication device performs wireless communication with a portable device carried by a user. The approaching person determination device determines presence and absence of a person approaching the image reading apparatus. The controller transmits, to the portable device, warning information indicating a risk of information leakage when the distance determination device determines that a distance between the image reading device and the portable device has reached a predetermined first threshold value and the approaching person determination device determines that there is an approaching person in a state in which the manuscript leaving determination device has determined that a manuscript is left in the image reading apparatus.