An image reading device includes a light applying unit that applies light from a light source to a recording medium, a detecting unit that detects the light reflected by the recording medium, a holding member that is movable in a first scanning direction of the light applying unit and holds a calibration member to which the light from the light applying unit is applied, a shaft member that extends in the first scanning direction through the holding member and guides the movement of the holding member in the first scanning direction, and a restricting member that extends in the first scanning direction and restricts rotation of the holding member about the shaft member.

An image sensing device includes a plurality of photoelectric conversion elements arranged in one direction for each color of received light, and an analog-digital (AD) convertor that performs analog-digital conversion for each pixel group configured by a plurality of photoelectric conversion elements selected from the photoelectric conversion elements. The AD converter is disposed in a position adjacent to each of the photoelectric conversion elements configuring the pixel group.

An image sensing device includes a plurality of photoelectric conversion elements arranged in one direction for each color of received light, and an analog-digital (AD) convertor that performs analog-digital conversion for each pixel group configured by a plurality of photoelectric conversion elements selected from the photoelectric conversion elements. The AD converter is disposed in a position adjacent to each of the photoelectric conversion elements configuring the pixel group.

An image acquisition apparatus, an image forming apparatus, and a control method of the same are provided. An image acquisition apparatus includes an image sensor in which a red element outputting a signal corresponding to a red light, a green element outputting a signal corresponding to a green light, and a blue element outputting a signal corresponding to a blue light are arranged in a predetermined pattern, a driving unit configured to move the image sensor to a plurality of positions; and an image processor configured to receive a signal output from the red element, the green element and the blue element in the plurality of positions, respectively, and configured to acquire an image of an object by combining the received signal.

An image reading substrate includes: an image reading unit that assigns read signals of an image to plural output terminals and outputs the read signals; at least one high-speed serial transmitting unit that is connected to the plural output terminals; and an outputting unit that outputs a high-speed serial signal outside, the high-speed serial signal being transmitted from the high-speed serial transmitting unit, in which at least distances of interconnects from the plural output terminals to the high-speed serial transmitting unit are set to be equal.

An apparatus comprises: a determination unit that determines whether target pixel data of a reference member is a singularity pixel; a counter that counts the number of pixel data that is not determined as the singularity pixel, for each of main-scanning positions; a summation unit that cumulatively sums the target pixel data not determined as the singularity pixel, for each of the main-scanning positions; and a calculation unit that, for each of the main-scanning positions, causes the summation unit to cumulatively sum the target pixel data not determined as the singularity pixel if a count value corresponding to a main-scanning position of the target pixel data is smaller than a predetermined number, and calculates shading correction data using data that the predetermined number of pixel data not determined as the singularity pixel are cumulatively summed.

A first color reading element photographs a printing medium at a first imaging position with imaging timing based on a driving signal, and outputs a first color reading signal in a fixed cycle. A second color reading element photographs the printing medium at a second imaging position with the imaging timing, and outputs a second color reading signal in the fixed cycle. A first color averaging processor performs an averaging process on a plurality of the stored first color reading signals using a weight responsive to a time gap between a first transport signal based on a pulse signal and the driving signal. The pulse signal is output by an encoder in response to a transport speed of the printing medium. Likewise, a second color averaging processor performs an averaging process on a plurality of the stored second color reading signals.

The present disclosure relates to systems and computer-implemented methods for obtaining both high-resolution red-green-blue (RGB) data and other data of an image-bearing surface using a single sensor array. The technique includes obtaining, using a sensor array configured to obtain measurements of M4 different spectral sensitivity responses per output pixel at low resolution, spectrophotometric data representing a plurality of output pixels representing the image-bearing surface, determining, using at least one electronic processor and based on the spectrophotometric data, high-resolution RGB data representing the image-bearing surface, determining, using at least one electronic processor and based on the spectrophotometric data, additional data representing a plurality of output pixels representing the image-bearing surface, and outputting the high-resolution RGB data and the additional data.

A reading device includes a light source configured to emit a first light band and a second light band towards a reading target object, the first and second light bands being different; an imager including multiple photoelectric conversion elements, each photoelectric conversion element configured to be sensitive to one of multiple light reception wavelengths; and circuitry. The imager receives light having the multiple light reception wavelengths reflected from the reading target object; outputs a first color read value of the reading target object with a first color having a first light reception wavelength of the multiple light reception wavelengths; and outputs a second color read value of the reading target object with a second color having a second light reception wavelength of the multiple light reception wavelengths. The circuitry corrects the first color read value based on the second color read value and output the corrected first color read value.

An image processing apparatus includes: a light source to irradiate an object with at least invisible light: an image sensor having sensitivity to a visible light wavelength range and an invisible light wavelength range: an image processor to generate an image according to image information that is output by the image sensor: a switching unit to switch the image processor to a single-color image generation mode in which a single-color image is generated. the single-color image being an image of a single color: and a controller to control the switching unit to switch the image processor to the single-color image generation mode in response to selection of an operating mode in which the invisible light is emitted.