An image reading apparatus includes a first transparent plate that supports an original document, a second transparent plate that is disposed adjacent to the first transparent plate, a reading member that moves along the first transparent plate to read an image of the original document supported by the first transparent plate and is disposed on a lower side of the second transparent plate, a positioning member that positions the reading member with respect to the second transparent plate in a plate thickness direction of the second transparent plate in a state where the reading member is disposed on the lower side of the second transparent plate, and a transporting member that transports an image of an original document to be read by the reading member positioned with respect to the second transparent plate by the first positioning member, in a linear shape along the second transparent plate.

An image reading apparatus includes an image capturing module, a reference member, a light source for emitting light to the reference member, a foreign object determining module for determining whether or not a foreign object appears in a specific image, and a position determining module for determining whether the foreign object exists on the image capturing module side or on the reference member side, based on an absolute value of a difference between a gradation value in a region included in two images and corresponding to a region where the foreign object appears when the foreign object appears in the specific image. One image is an image of the reference member captured under illumination of light with a first light quantity from the light source, and other image is an image of the reference member captured under illumination of light with a second light quantity from the light source.

An image reading apparatus includes a first stacking unit, a feeding unit, a reading unit, a second stacking unit onto which a document whose image is read by the reading unit is discharged, a rotating shaft, and protrusions. The first stacking unit includes a sheet stacking surface on which the document is stacked and includes an abutment portion on which one end portion of the document abuts. The feeding unit feeds the document stacked on the first stacking unit in a feed direction. The reading unit reads an image of the document conveyed by the feeding unit. The rotating shaft extends in the feed direction and supports the first stacking unit so as to be rotationally movable. The protrusions extends in a direction at a predetermined angle with respect to the feed direction, is arranged on the sheet stacking surface, and protrudes from the sheet stacking surface.

A non-transitory computer-readable storage medium storing computer-readable instructions for an information processing apparatus is provided. The computer-readable instructions cause the information processing apparatus to obtain a width of an image-formable area, having a first side and a second side, on a sheet and object image data composing an object image; define a first partial image and a second partial image in the object image; and generate composite image data composing an image, in which the first partial image and the second partial image are arrayed in an arrangement such that a third side of the first partial image and a fourth side of the second partial image align along the first direction.

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.

An image processing device includes a printing unit printing an image on a sheet including first and second tags. The first and second tags have first and second antennas extending along first and second directions. The device further includes a tag reading unit including a third antenna and configured to transmit, towards the sheet from the third antenna, first radio waves polarized in the first direction and second radio waves polarized in the second direction in each of a first period during which the sheet is conveyed towards the third antenna and a second period during which the sheet is conveyed away from the third antenna, and determine an orientation of the sheet based on intensities of third radio waves polarized in the first direction and fourth radio waves polarized in the second direction, which have been received by the third antenna in each of the first and second periods.

An image forming apparatus improved in a setting process for a recording medium to thereby make it possible to prevent print processing from failing to be executed. In the image forming apparatus including a plurality of sheet feeders for storing recording sheets, when recording sheets are stored in one of the sheet feeders, at least one of the recording sheets is conveyed from the corresponding sheet feeder, and the type of the conveyed recording sheet is identified. Then, the identified type of the recording sheet is set as the type of the stored recording sheets. This makes it possible to prevent occurrence of a situation in which print processing is not executed because the identified type of the recording sheet does not match the set type of the recording sheets, whereby it is possible to prevent print processing from failing to be executed.

An image reading device includes a processing unit configured to perform short-range radio communication to perform at least one of data reading operation from an information storage unit mounted on an object to be scanned and data writing operation to the information storage unit, a first antenna unit configured to perform the short-range radio communication with the information storage unit mounted on the object to be scanned using a first communication mode, and a second antenna unit configured to perform the short-range radio communication with the information storage unit mounted on the object to be scanned using a second communication mode. In the image reading device, the processing unit performs the short-range radio communication to perform at least one of the data reading operation from the information storage unit and the data writing operation to the information storage unit, using the first communication mode or the second communication mode.

In a reading device part, a scan motor that moves a sensor unit relative to a document is accommodated in an accommodating portion protruding from the bottom surface of the reading device part toward a printing device part. A carriage in the printing device part and the accommodating portion are arranged so as to face each other in a direction crossing the scan direction of the carriage at the same height in the vertical direction. A flexible member connected to the carriage moves and follows the carriage on a lower side relative to the accommodating portion.

In a case where a temperature detected by a detector is greater than a threshold, one or more processors controls a light source not to emit light and stops conveyance of a document by a conveyance unit. In a case where a predetermined amount of time has elapsed from when the one or more processors controls the light source not to emit the light, the one or more processors controls the light source to emit the light and starts conveyance of the document by the conveyance unit, regardless of a detection result of the detector.