Abstract: A radiation imaging system includes a communication device configured to perform wireless communication with a radiation imaging apparatus configured to capture a radiographic image, and an information processing apparatus. The information processing apparatus causes the communication device to perform the wireless communication with the radiation imaging apparatus, based on information about a distance between the communication device and the radiation imaging apparatus and a threshold value set in advance.

Abstract: An image forming apparatus configured to perform high-quality image formation regardless of an accuracy of mounting surface emitting element array chips includes an image data generating portion configured to generate pixel data equivalent to 2,400 dpi; a joint correcting portion configured to correct a misregistration amount at a joint between a predetermined surface emitting element array chip and a surface emitting element array chip arranged adjacent to the predetermined surface emitting element array chip; and a resolution converting portion configured to convert a resolution of the pixel data from 2,400 dpi to 1,200 dpi. The joint correcting portion is configured to correct the misregistration amount at the joint with respect to pixel data obtained after the resolution thereof is converted by the resolution converting portion.

Abstract: A radiation imaging apparatus includes a plurality of antennas that performs at least one of reception of control data for an image capturing unit to capture radiation image data from a data processing apparatus and transmission of the radiation image data to the data processing apparatus via wireless communication, a selection unit that selects an antenna to be used from the plurality of antennas, and a control unit that controls the selection unit. The control unit restricts a selection by the selection unit such that the selection is not performed during a period when the image capturing unit captures the radiation image data.

Abstract: Provided is an image forming apparatus configured to perform high-quality image formation regardless of an accuracy of mounting surface emitting element array chips. The image forming apparatus includes: an image data generating portion (401) configured to generate pixel data equivalent to 2,400 dpi; a joint correcting portion (1702) configured to correct a misregistration amount at a joint between a predetermined surface emitting element array chip and a surface emitting element array chip arranged adjacent to the predetermined surface emitting element array chip; and a resolution converting portion (1702) configured to convert a resolution of the pixel data from 2,400 dpi to 1,200 dpi. The joint correcting portion (1702) is configured to correct the misregistration amount at the joint with respect to pixel data obtained after the resolution thereof is converted by the resolution converting portion 1702.

Abstract: An image forming apparatus includes a rotatable photosensitive drum together with first and second chips which include plural light emission elements arranged along a rotational axis of the photosensitive drum so as to expose the photosensitive drum to light emitted therefrom for each of one line extending along the rotational axis. Parts of the first and second chips overlap in a direction perpendicular to the rotational axis. A controller controls actuation of said light emitting elements on the basis of image data, wherein for the overlapped parts, the light emission pattern is controlled to be different for every predetermined number of the lines.

Abstract: An image forming apparatus includes a substrate including a light emitting element and a controller for controlling driving of a light emitting element. a first chip and a second chip including the light emitting elements are mounted on the substrate. in a width direction of the substrate, the first chip and second chips are aligned in a certain area part. the controller drives the light emitting elements so that the light emission pattern of the two light emitting elements aligned in the width direction of the substrate is made different for each predetermined number of lines.

Abstract: Provided is an image reading apparatus configured to recognize edge portions of an image of an original precisely without being influenced by the varying state of the four sides of the original. The image reading apparatus includes an image reading unit configured to read the original image by scanning the original, an edge determining unit configured to determine first edge locations at the left end and right end of the original image in a main scanning direction, an edge detector configured to detect a second edge location of the original image in a sub-scanning direction, a tilt expression calculator configured to calculate a linear expression that represents the amount of inclination of the original image with respect to the main scanning direction.

Abstract: An image reading apparatus which is capable of successfully reading an image off an original by correctly detecting a size of the original without degrading productivity even if mixed-size originals are placed on an original tray with edges not aligned. An image reading unit reads an image off an original passing through a reading position. An original size detection sensor detects an original. A first original size is determined using a result of detection by the original size detection sensor, and a second original size is determined using the image read off the original. The first original size or the second original size is adopted as an original size.

Abstract: An image reading apparatus includes a first scanner configured to read a first image from a front side of a document, a second scanner configured to read a second image from a back side of the document, and first and second offset storage parts configured to store a first offset amount for correcting an inclination of the first image and a second offset amount for correcting an inclination of the second image, respectively. The image reading apparatus is configured to generate, when the first scanner is replaced, a new first offset amount based on the second offset amount, a first inclination amount of the first scanner, and a second inclination amount of the second scanner. The image reading apparatus is configured to correct the first image based on the new first offset amount.

Abstract: Provided is an image reading apparatus configured to recognize edge portions of an image of an original precisely without being influenced by the varying state of the four sides of the original. The image reading apparatus includes an image reading unit configured to read the original image by scanning the original, an edge determining unit configured to determine first edge locations at the left end and right end of the original image in a main scanning direction, an edge detector configured to detect a second edge location of the original image in a sub-scanning direction, a tilt expression calculator configured to calculate a linear expression that represents the amount of inclination of the original image with respect to the main scanning direction.

Abstract: An image reading apparatus includes a first scanner configured to read a first image from a front side of a document, a second scanner configured to read a second image from a back side of the document, and first and second offset storage parts configured to store a first offset amount for correcting an inclination of the first image and a second offset amount for correcting an inclination of the second image, respectively. The image reading apparatus is configured to generate, when the first scanner is replaced, a new first offset amount based on the second offset amount, a first inclination amount of the first scanner, and a second inclination amount of the second scanner. The image reading apparatus is configured to correct the first image based on the new first offset amount.

Abstract: An image reading apparatus which is capable of successfully reading an image off an original by correctly detecting a size of the original without degrading productivity even if mixed-size originals are placed on an original tray with edges not aligned. An image reading unit reads an image off an original passing through a reading position. An original size detection sensor detects an original. A first original size is determined using a result of detection by the original size detection sensor, and a second original size is determined using the image read off the original. The first original size or the second original size is adopted as an original size.