A sheet conveying apparatus includes first and second drive sources, first and second driving units, each including a respective first or second roller to convey a sheet, an operating unit, and a switching unit to switch a state of the sheet conveying apparatus between a first state in which the first driving unit and the second driving unit are not connected to each other and a second state in which the first driving unit and the second driving unit are connected to each other. A first drive source driving force drives the first driving unit. A second drive source driving force drives the second driving unit. The operating unit rotates when manually operated. In the second state, operating unit rotation is transmitted to the first driving unit to rotate the first roller, and operating unit rotation is transmitted to the second driving unit to rotate the second roller.

Provided is a light scanning apparatus including a deflector deflecting a light flux to scan a scanned surface, and an imaging optical element including an optical surface and guiding light flux from deflector to scanned surface. The light scanning apparatus causes a first marginal ray on a side closer to a first deflection point on deflector in a first cross section including first deflection point and being perpendicular to a main scanning section and a sub-scanning section, the first marginal ray being included in an on-axis light flux reflected by the optical surface after being deflected at first deflection point, to travel toward a position spaced apart from first deflection point in a sub-scanning direction by 4 mm or more in first cross section. A sub-scanning width of on-axis light flux on first cross section is smaller than a sub-scanning width of on-axis light flux on optical surface.

The reading device of the present disclosure includes a housing, a first irradiation part, an imaging device, and a first diffusion part. The housing has an opening in an upper portion with a transparent reading window member. The first irradiation part emits an infrared light. The imaging device is disposed on a bottom portion such that an optical axis is directed to a reading window member. The first diffusion part is disposed on a left side wall connecting the upper and bottom portions. The first diffusion part diffuses the infrared light. The first diffusion part is made up of a light-transmitting first diffusion plate and a light-transmitting second diffusion plate. The first diffusion plate is disposed on the bottom surface side and inclined toward the upper portion. The second diffusion plate is disposed on the upper surface side and inclined toward the bottom portion.

An image reading device includes a glass having a document reading surface along which a document moves; an image reading unit movable in a sub-scanning direction and including a light emitting portion that emits light to illuminate the document with the light and a light receiving portion that receives the light reflected by the document, the image reading unit reading the document that moves along the document reading surface at a predetermined document reading position; and a light emission control unit that causes the light emitting portion to emit the light so that the light enters the glass through a side surface that crosses the document reading surface in an operation different from an operation in which the image reading unit reads the document.

An optical information reader includes a reflective member that reflects illumination light emitted from an illuminant toward a reading surface, and an image former ensured to present an imaging target held over the reading surface within an imaging region of an imager. The imaging region includes a first imaging region defined between the image former and the reading surface, and a second imaging region defined between the reading surface and the reflective member so as to be continuous to the first imaging region when light is internally reflected on the reading surface inside the housing. The reflective member is arranged outside the first imaging region, while the illuminant, the imager and the image former are arranged outside the second imaging region. The illuminant emits illumination light toward a reflecting surface of the reflective member in the second imaging region.

An image processing device may include an image acquisition part configured to acquire image data including an information recording medium captured under irradiation of light, an angle calculation part configured to calculate an inclination angle of the information recording medium based on the image data, an apex calculation part configured to calculate coordinates of respective apexes corresponding to a quadrangle of the information recording medium based on the image data, and an angle correction part configured to correct the coordinates of the respective apexes calculated by the apex calculation part with the inclination angle, and the angle correction part is further configured, for each pixel within a quadrangle formed by respective corrected apexes, to acquire a pixel value of a pixel of the image data located at a coordinate obtained by reversely converting a coordinate of the each pixel with the inclination angle to prepare corrected image data.

An image reading apparatus comprises a plate with light transparency on which a sheet is to be placed, the plate including light-responsive display elements, a scanner including a first light source and a light sensor and configured to read image information of a sheet placed on the plate according to light detected by the light sensor in response to light irradiated by the first light source, and a second light source that is controlled to irradiate light on a portion of the light-responsive display elements in the plate to produce a visible image on the plate.

An objective of the present disclosure is to obtain a light guide and an image reading apparatus capable of efficiently irradiating an object to be irradiated (1). The light guide and the image reading apparatus include a rod-shaped light guide main body (2) extending in the longitudinal direction, a first end face (3) that is an end face of the light guide main body (2) along the transverse direction, a light scattering pattern (5) that scatters light that enters from the first end face (3) and is guided inside the light guide main body (2), and a light emission surface portion (6) formed on the light guide main body along a longitudinal direction, the light emission surface portion (6) being a surface from which the light scattered at the light scattering pattern (5) is emitted to outside the light guide main body (2) after being reflected on a wall surface of the light guide main body (2). The light emission surface portion (6) includes a first light emission surface (6a) that is disposed near the first end face (3) in the longitudinal direction and a second light emission surface (6b) that is contiguous with the first light emission surface (6a) in the longitudinal direction. A width of the first light emission surface (6a) in the transverse direction is shorter than a width of the second light emission surface (6b) in the transverse direction.

In accordance with an embodiment, a lens mirror array includes a plurality of optical elements integrally connected in a first direction. Each optical element includes an incident side lens surface through which light enters the optical element, a ridge located at an edge of the incident side lens surface, a reflection surface on which light incident on the incident side lens surface is reflected, an exit side lens surface through which light reflected by the reflection surface exits the optical element, and a groove surrounding the reflection surface except for a portion adjacent to the ridge, the portion adjacent to the ridge connecting to an adjacent optical element in the plurality of optical elements.

A sheet conveying apparatus includes first and second drive sources, first and second driving units, each including a respective first or second roller to convey a sheet, an operating unit, and a switching unit to switch a state of the sheet conveying apparatus between a first state in which the first driving unit and the second driving unit are not connected to each other and a second state in which the first driving unit and the second driving unit are connected to each other. A first drive source driving force drives the first driving unit. A second drive source driving force drives the second driving unit. The operating unit rotates when manually operated. In the second state, operating unit rotation is transmitted to the first driving unit to rotate the first roller, and operating unit rotation is transmitted to the second driving unit to rotate the second roller.