A reading device and an image forming apparatus are provided. The reading device includes an image reading device configured to read an image on a recording medium being conveyed, a background device serving as a background image when the image is read by the image reading device, and a foreign-object detector configured to compare a first read image obtained as the background device is read by the image reading device with a second read image obtained as the background device and the recording medium are read by the image reading device to detect an attached foreign object. The image forming apparatus includes the reading device and an image forming device.

An image reading device includes a placement section on which a subject is placed, an image capturing unit that is disposed above the placement section and captures an image of the subject, an irradiating unit that is disposed above the placement section and irradiates the subject with light, and a display unit that is disposed between the placement section and the image capturing unit and between the placement section and the irradiating unit, the display unit being located at a position outside an image capturing range of the image capturing unit and an irradiation range of the irradiating unit.

An information processing apparatus includes a processor configured to convert the values of pixels in a glossy region of process target image data by inputting the process target image data to a first learning unit that has been trained using, as first learning data, first read image data and second read image data so as to convert the first read image data into the second read image data. The glossy region corresponds to a glossy portion of a document. The first read image data include the glossy region, and are obtained by optically reading the document in a first reading environment in which the light amount of regularly reflected light from a learning data document acquired by an image sensor is less than a regularly reflected light amount threshold. The second read image data include the glossy region, and are obtained by optically reading the document in a second reading environment in which the light amount of the regularly reflected light acquired by the image sensor is equal to or more than the regularly reflected light amount threshold. The process target image data are obtained by optically reading a process target document in the first reading environment.

A multi-mode scanning device for scanning an original includes a non-transparent element, a first light source, a second light source and an optical module. The first light source outputs visible light to irradiate the non-transparent element and the original to generate first light and second light, respectively. The second light source outputs invisible light to irradiate a combination of the non-transparent element and the original to generate third light and fourth light. The optical module receives the first light, the second light, the third light and the fourth light and generates sensing signals representative of visible light information and invisible light information of the original. The original is disposed between the non-transparent element and the optical module. The first light source and the optical module are disposed on a same side of the non-transparent element.

A measurement apparatus includes a light irradiator that irradiates a measurement target with light and a processor that controls the light irradiator, in which the processor is configured to irradiate a specific place of the measurement target with the light from plural places having different positions in one direction, and irradiate the specific place of the measurement target with the light from the plural places having different positions in a direction intersecting the one direction.

An image processing apparatus includes circuitry to receive visible image data obtained by reading of a subject with a sensor having sensitivity to visible light in a visible wavelength range and invisible image data obtained by reading of the subject with a sensor having sensitivity to invisible light in an invisible wavelength range. The circuitry generates image data for displaying, in a designated color, a portion of the visible image data corresponding to a designated region of the invisible image data. The designated region has an absorption rate equal to or higher than a predetermined absorption rate.

An image reading device includes plural light sources that irradiate an image reading target with light at different angles; and a switching mechanism that sequentially switches the light incident to the image reading target from the plural light sources during an image reading operation on the image reading target.

An image reading device includes a placement portion in which a placement surface on which an original document is placed is formed, an imaging portion that is arranged on a center side of the placement surface in an apparatus width direction above the placement surface in an apparatus upward and downward direction and images the original document, a display portion having a display screen of which at least a part is arranged on a far side of the placement surface in an apparatus depth direction and the center side of the placement surface in the apparatus width direction between the placement surface and the imaging portion in the apparatus upward and downward direction, an irradiation portion that is arranged on the center side of the placement surface in the apparatus width direction above the display portion in the apparatus upward and downward direction and irradiates the placement surface with light, and a pair of other irradiation portions that are respectively arranged on both sides of the irradiation portion in the apparatus width direction above the display portion in the apparatus upward and downward direction and irradiate the placement surface with light.

An image scanning unit optically scans an image of a predetermined scanning area that includes a platen glass on which a document is put. A document cover is capable of rotation and covers the platen glass. A first movable member moves in a direction substantially perpendicular to the platen glass in accordance with opening and closing of the document cover. A second movable member moves in a direction substantially parallel to the platen glass in accordance with movement of the first movable member when the first movable member contacts. A cover status detecting unit obtains the image from the image scanning unit and detects a status of the document cover on the basis of an image of the second movable member in the scanning area.

A lighting device includes a rod-shaped light guide, a light guide holder, and an opening optically communicating with the hole. The opening is formed in a first flat surface opposite to a surface into which an end surface of the light guide is inserted. The device also includes a housing, a light source base plate, and a base plate protection layer being formed on a region of the light source base plate other than at least a region on which a light source element is formed. At least one of the light source base plate and the second flat surface of the base plate protection layer is pressed against the housing or the first flat surface at a position at which light emitted by the light source element enters the end surface of the light guide exposed from the opening.