Illumination Patents (Class 358/509)
  • Patent number: 10382643
    Abstract: An image processing device includes a reception unit that receives an input image signal, and a synchronization signal used to generate an output image signal on a basis of the input image signal. In a case in which, after receiving the synchronization signal, the reception unit does not receive a next synchronization signal within a predetermined reception period, the reception unit conducts an automatic reception process that treats the next synchronization signal as being received.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: August 13, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kosuke Shimizu, Kazunori Sato, Eisuke Nozawa, Motohiro Asano
  • Patent number: 9955030
    Abstract: A printing system includes a printing apparatus that prints an image on a sheet, a sheet processer that executes sheet processing, and a sheet detection sensor that detects a sheet on which the sheet processing is performed not in association with the printing of an image, where the printing of an image is restricted in response to detection of a sheet by the sheet detection sensor.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 24, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masahiro Mutsuno, Masaki Kashiwagi, Akinori Takeo, Satoshi Totsuka
  • Patent number: 9535637
    Abstract: An image reading apparatus includes a conveyance unit, a reading unit, a carriage, a motor, a motor gear, a conveyance gear, a carriage gear, and a control device. The conveyance unit is configured to convey a document. The reading unit is configured to read an image on the document. The carriage is configured to support the reading unit and to be movable in a prescribed direction. The reading unit is selectively operable in a first mode in which the image on the document is read while conveying the document by the conveyance unit, and a second mode in which the image on the document is read by moving the reading unit in the prescribed direction. The switching gear is configured to be placed in a first position and a second position. The control device is configured to control the switching gear to move between the first position and the second position, acquire initialization data initializing the reading unit, and control the reading unit to read the image on the document.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: January 3, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Shinya Sahara
  • Patent number: 9264568
    Abstract: Provided is an image reading apparatus, including a reading portion which reads an image and generates gradation values of each pixel, a calculation portion which calculates a coefficient group that allows the gradation values of each pixel generated as the reading portion reads a reference image, to be close to the gradation values of the pixels which correspond to image data forming the reference image, divides plural regions including an overlapped part in which the reference images are overlapped with each other, and calculates the coefficient group in each region, and a correction portion which corrects the gradation values of each pixel generated as the reading portion reads a correction target image, and corrects the gradation values of the correction target which correspond to the gradation values of the pixels of the overlapped part using the coefficient group.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: February 16, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kiyofumi Aikawa, Michio Kikuchi, Hideki Moriya, Masaki Hachisuga, Takashi Hiramatsu, Kazuya Fukunaga
  • Patent number: 9250561
    Abstract: A printer forms a first adjustment mark and a second adjustment mark on a belt when execution conditions of inter-light source adjustment or inter-color adjustment processing are established. In the first adjustment mark, a first toner line is positioned at a leading end in the moving direction of the belt, and a second toner line is positioned at a trailing end. In the second adjustment mark, a second toner line is positioned at a leading end, and a first toner line is positioned at a trailing end.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 2, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yuji Goto, Kentaro Murayama
  • Patent number: 9197787
    Abstract: An image reading device includes a light source, a photoelectric conversion portion, a first radiation control portion, and a first image generating portion. The light source radiates lights of R (red), G (green), and B (blue). The photoelectric conversion portion receives light reflected from a document and outputs an electric signal corresponding to a light reception amount. The first radiation control portion sequentially radiates two color lights of G and R or B from the light source to each line along a main scanning direction on the document while alternately switching the lights of R and B on a line-by-line basis. The first image generating portion generates color image data for one line, based on at least three electric signals corresponding to lights of R, G, and B among the electric signals corresponding to respective color lights radiated to at least adjacent two lines by the first radiation control portion.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: November 24, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Masayoshi Takahashi
  • Patent number: 9183619
    Abstract: When restoring a scanned halftone image of a damaged document, parameters of the halftone structure (geometry) are estimated, as is an intended contone gray level for damaged portions of the image. Locations of halftone cell tiles in the scanned image are determined based on the halftone structure, and a halftone profile model is generated using the estimated halftone parameters and contone information. Image segments are aligned using global features for coarse alignment and halftone structure for fine alignment, such as in cases where the scanned halftone image contains unconnected fragments. Missing parts of the damaged document image are filled in using the halftone profile model and estimated contone values.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: November 10, 2015
    Assignee: XEROX CORPORATION
    Inventors: Shen-ge Wang, Edgar A. Bernal, Robert P. Loce
  • Patent number: 9172847
    Abstract: In a method of scanning an image on an original, an optical sensor including sensor elements for each of a number of basic colors is used to generate pixel values of rows of pixels of the scanned image. The sensor elements are used to generate grey scale pixel values representing different parts of the image. A first sensor element for each of the basic colors is used to generate pixel values of odd pixels of rows on the original, and a second sensor element for each of the basic colors is used to generate pixel values of even pixels of rows of the original. Each color pixel value is generated mainly on the basis of a pixel value of at least one of the first sensor elements and pixel values of at least two of the second sensor elements for adjacent pixels.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: October 27, 2015
    Assignee: Oce-Technologies B.V.
    Inventor: Johannes H. M. Janssen
  • Patent number: 9083841
    Abstract: An image reading apparatus for reading an image of an original document includes a document placement surface, an illumination unit, a light-receiving unit, and an illumination control unit. The illumination unit includes: a first light guiding body in a bar shape extended in a first direction configured to irradiate a light to the original document along a second direction, a second light guiding body arranged at a distance from the first light guiding body configured to irradiate a light to the original document along a third direction, a pair of first light sources emits illuminating lights to be injected into the first incident surfaces, a pair of second light sources emits illuminating lights to be injected into the second incident surface. The illumination control unit is configured to control light-emitting operations of the first light source and the second light source corresponding to the reading mode.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: July 14, 2015
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Yoshihiko Kurotsu
  • Patent number: 9041986
    Abstract: A sheetfed film scanning correction method includes: using a film holding member as a film feeding carrier, wherein the film holding member is fixed and does not move during film feeding, and wherein after the film holding member is inserted into a work position in a scanner, a scanning module of the scanner collects a first correction information under a filmless scanning state and corrects a subsequent scan result according to the first correction information; and setting sheet-feeding rollers of the scanner in idle running as if under a real film scanning state during or prior to collection of the first correction information.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: May 26, 2015
    Assignee: QISDA (SUZHOU) Co., LTD
    Inventors: Yong-Xiang Yi, Shan-Shan Tang
  • Patent number: 9041984
    Abstract: An image reading device includes a light source, an imaging section, and a controller. The light source includes a plurality of light emitting elements. The light source irradiates light to an original document, while moving relative to the original document. The imaging section obtains scan data read from the original document by light irradiated to the original document from the light source. The controller controls the light source and the imaging section. The controller determines a read target region and a non-read target region in the original document, turns on a light emitting element out of the plurality of light emitting elements, which corresponds to the read target region, and turns off a light emitting element out of the plurality of light emitting elements, which corresponds to the non-read target region.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: May 26, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Haruki Sayama
  • Patent number: 9041987
    Abstract: An image evaluation apparatus includes a reading unit that includes a monochrome detection unit reading, in a focused state, an image formed on a recording material by an image forming apparatus that represents grayscale of the image by forming dots on the recording material, and a color detection unit reading the image in a defocused state; an image information obtaining unit that obtains image information for the image forming apparatus to form the image; a computing unit that computes a luminance and a chroma of an image supposed to be formed on the recording material by the image forming apparatus from the obtained image information; a comparing unit that compares a derived luminance with the computed luminance, and compares a derived chroma with the computed chroma; and an image evaluation unit that evaluates the image formed by the image forming apparatus, on the basis of results of comparison.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: May 26, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kiyofumi Aikawa, Michio Kikuchi, Takashi Hiramatsu
  • Publication number: 20150124300
    Abstract: A scanner is disclosed. The scanner has three lights with three different colors. The scanner uses only two of the three lights when capturing each scan line. The scanner does this by alternating the use of two of the three colors every other scan line.
    Type: Application
    Filed: May 22, 2012
    Publication date: May 7, 2015
    Inventors: Dejan Depalov, Craig T Johnson, Kenneth K Smith, Baris Efe, Jerry Wagner
  • Patent number: 9025212
    Abstract: A scanner device according to one aspect of the present disclosure has a first mode for reading a normal object placed on a document table, and a second mode for reading a self-luminous object placed on the document table. The scanner device has a light detecting portion and a control portion. The light detecting portion detects light of an object placed on the document table. The control portion switches the reading mode between the first mode and the second mode on the basis of a detection result of the light detecting portion.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: May 5, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Koichi Tanaka
  • Publication number: 20150116797
    Abstract: An image reading device includes a light source, a photoelectric conversion portion, a first radiation control portion, and a first image generating portion. The light source radiates lights of R (red), G (green), and B (blue). The photoelectric conversion portion receives light reflected from a document and outputs an electric signal corresponding to a light reception amount. The first radiation control portion sequentially radiates two color lights of G and R or B from the light source to each line along a main scanning direction on the document while alternately switching the lights of R and B on a line-by-line basis. The first image generating portion generates color image data for one line, based on at least three electric signals corresponding to lights of R, G, and B among the electric signals corresponding to respective color lights radiated to at least adjacent two lines by the first radiation control portion.
    Type: Application
    Filed: October 29, 2014
    Publication date: April 30, 2015
    Inventor: Masayoshi Takahashi
  • Patent number: 9013759
    Abstract: A document reading unit included in an image forming apparatus and operated with a method of detecting an original document, includes an original document table, a moving irradiation unit having multiple block light sources moving in a sub scanning direction while irradiating the original document, an image sensor receiving reflected light, and a controller that starts a length specifying operation with the moving irradiation unit located at a position facing the original document, sequentially turns on the block light sources, obtains an amount of reflected light under lighting conditions of each block light sources, and determines the length of the original document in the main scanning direction. While the moving irradiation unit is moving in the sub scanning direction, the image sensor receives the reflected light on a region of the original document in the sub scanning direction under each lighting condition during the length specifying operation.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: April 21, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Masatoshi Ishida
  • Patent number: 9001396
    Abstract: An image reading device includes a contact glass having a document placing surface, an index part to be an index for aligning a corner of a document to a reference point within the document placing surface, a reading portion configured to read the document, and a light emitting portion configured to emit linear light extending in a main scanning direction. When a predetermined point apart from the index part within the document placing surface is set as the reference point, the light emitting portion moves in a sub-scanning direction so that a region of the contact glass irradiated with the linear light coincides with the predetermined point, and emits the linear light.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: April 7, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hidehiko Kojo
  • Patent number: 8988746
    Abstract: In the aforementioned image scanning apparatus of this embodiment, a condensation detection patch includes pluralities of patch areas with different reflectances arranged adjacently. A data acquiring unit acquires measurement values of the condensation detection patch by an image sensor as condensation detection patch data. A condensation determining unit determines whether condensation occurs or not on the basis of the condensation detection patch data corresponding to one with a low reflectance of two patch areas arranged adjacently in the patch areas.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 24, 2015
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Hironori Yamauchi
  • Patent number: 8988740
    Abstract: A scanning method and apparatus. The method comprising the steps of: measuring an ambient video level using an area sensor under the control of a processor means; and calculating a gain and/or a exposure time and/or light source power for an actual flash video level using a stored reference flash video level and the measured ambient video level such that a summation of the actual flash video level and the ambient video level yields a desired video level in a scan image of the document using the calculated gain and/or exposure time and/or light source power.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: March 24, 2015
    Assignee: Piqx Imaging Pte Ltd
    Inventors: Yew Kien Loi, Ling Chuing Goh, Swee Heng Yeo, Boon Chen Lee, Gunawan Sutono
  • Patent number: 8982436
    Abstract: A carriage motor which is a heat generating device is arranged next to a CIS in a scanner unit. The carriage motor drives respective transport rollers of an ADF unit via a gear system as well. The scanner unit makes a white reference board be read so as to obtain white reference data, and obtains black reference data more frequently than the white reference data, e.g., in a continuous process for reading a document. As a CIS module continues a reading process, the black reference data changes as being affected by a change in temperature in the CIS module, etc. The scanner unit deals with such a change in the black reference data by obtaining the black reference data more frequently.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: March 17, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Aya Washizawa
  • Patent number: 8982408
    Abstract: An image capturing unit includes: a sensor unit that captures an image of a predetermined area including an image capture object; a reference chart portion that is disposed in the predetermined area and an image of which is captured together with an image of the image capture object by the sensor unit; an illumination light source that illuminates the image capture object and the reference chart portion; and a specular reflection preventing member that prevents that specular reflection light of light emitted from the illumination light source enters the sensor unit.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 17, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Yasuyuki Suzuki, Nobuyuki Satoh, Mamoru Yorimoto, Suguru Yokozawa, Masato Kobayashi, Yuichi Sakurada, Tatsuhiko Okada, Tomokazu Kanzawa, Daisaku Horikawa, Hiroshi Matsumoto
  • Patent number: 8982430
    Abstract: A lighting unit includes LED chips positioned in an array form in a main scanning direction on LED substrates. Cylindrical parabolic mirrors each form a shape in which a cylindrical paraboloid having curvature with respect to an sub-scanning direction has been clipped by an axial plane that is perpendicular to the vertex of the cylindrical paraboloid in the main scanning direction, and project light emitted from the light source on an illumination area of an illuminated item. Each cylindrical parabolic mirror includes an anchoring section that is provided at the vertex of the cylindrical paraboloid, and extends from the vertex in an outside direction of the cylindrical paraboloid. Heat-radiating plates each have a contact section that is in contact with the LED substrate, and a non-contact section. Each LED substrate is interposed between the contact section of the heat-radiating plate and the anchoring section of the cylindrical parabolic mirror.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: March 17, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuki Okamoto, Taku Matsuzawa, Tadashi Minobe, Takahito Nakanishi
  • Patent number: 8976422
    Abstract: A lens array includes a transparent substrate arranged on a plane perpendicular to an optical axis, first lenses, which are arranged in a main scanning direction with respect to an light incident on the transparent substrate, and which condense the light, light shielding portions arranged on the transparent substrate except in areas of the first lenses to shield the light, and second lenses, which are laminated on the first lenses, and which are made of a material with a wettability different from that of a material of the first lenses.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: March 10, 2015
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Ryozo Akiyama, Atsushi Kubota
  • Patent number: 8976425
    Abstract: According to one embodiment, an image scanning apparatus includes a document table on which an original document is stacked; a substrate; plural first light emitting elements located on one surface of the substrate, the first light emitting elements each emitting light for irradiating the original document on the document table with direct light not reflected by a reflection member; and plural second light emitting elements located on the other surface of the substrate, the second light emitting elements each emitting light for irradiating the original document on the document table with indirect light reflected by the reflection member. The reflection member includes a first reflection member and a second reflection member, and the first reflection member and the second reflection member are located in positions opposed to each other across a reflection optical path of light reflected by the original document on the document table.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: March 10, 2015
    Assignee: Toshiba TEC Kabushiki Kaisha
    Inventors: Hiroyuki Shiraishi, Naoaki Ide, Mitsuru Hatano, Sueo Ueno, Katsuya Nagamochi, Yusuke Hashizume, Naoya Koseki, Koji Shimokawa, Jun Sakakibara, Kenji Itagaki, Sasuke Endo
  • Patent number: 8964264
    Abstract: An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. An LED array (71) and a reflective plate (73) are disposed sandwiching a slit (St) through which light reflected by a document MS passes and a light-guiding member (72) is disposed on the side of the LED array (71). The light-guiding member (72) includes a direct emission unit (77) disposed between an illumination range y centered on a document reading position and the LED array (71) and an indirect emission unit (78) disposed between the reflective plate (73) and the LED array (71), a light incidence face of the direct emission unit (77) and a light incidence face of the indirect emission unit (78) are disposed at mutually different position around the LED array (71), and the LED array (71) is disposed on a side of an interior angle formed by the light incidence faces.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: February 24, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasuhiro Suto, Mitsuharu Yoshimoto, Tomohiko Okada, Hisashi Yamanaka, Shohichi Fukutome, Kenji Nakanishi
  • Patent number: 8958132
    Abstract: The image reading apparatus includes a light transmissive member, a first light source causing a first light to enter the light transmissive member from a first side face of side faces thereof, a second light source illuminating a document laid on an upper face of the light transmissive member with a second light, an image sensor photoelectrically converting an optical image, and an imaging optical system forming on image sensor the object image with light exiting from the light transmissive member. The first light source is disposed such that the first light emitted therefrom and entering the light transmissive member from the first side face satisfies a total reflection condition at the upper and lower faces of the light transmissive member.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: February 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadao Hayashide
  • Patent number: 8953233
    Abstract: Correction of brightness of image data outputted by an image sensor which includes a light emitting portion, a photoelectric conversion portion in which a plurality of photoelectric transducers are arrayed in line, and a charge transfer portion. For a smear occurred at the charge transfer portion, reference smear amount data is stored, corresponding to each of color components of light from the light emitting portion and a correction target pixel. A correction amount for brightness is based on a difference between brightness values of a first color component and a second color component and the reference smear amount data.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: February 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takashi Sakai
  • Patent number: 8947724
    Abstract: An image capturing unit includes a sensor section that images a predetermined range including a subject; a reference chart section that is imaged by the sensor section with the subject; and an illumination light source that illuminates the subject and the reference chart section. The illumination light source is arranged at a position where a mirror reflection region that mirror reflects light entering from the illumination light source to the sensor section is outside a region of the subject and the reference chart section.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: February 3, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Suguru Yokozawa, Nobuyuki Satoh, Yasuyuki Suzuki, Masato Kobayashi, Yuichi Sakurada, Mamoru Yorimoto, Tatsuhiko Okada, Daisaku Horikawa, Masahiro Shigemoto, Kazushi Takei, Hideaki Suzuki, Satoshi Iwanami
  • Patent number: 8947750
    Abstract: According to one embodiment, an imaging device array includes a plurality of imaging devices integrally including an incidence surface that converges light in the primary scanning direction, plural reflective surfaces that reflect light from the incidence surface multiple times, and an exit surface through which light that has reflected at the plural reflective surfaces exits the array. At least one of the plural reflective surfaces is formed at the apex of a protrusion that protrudes outwardly from the surface of the array, and the light that is output from the exit surface is imaged at an image point.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: February 3, 2015
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventor: Takashi Shiraishi
  • Patent number: 8934158
    Abstract: An image reading apparatus includes a light-emitting device having a peak wavelength that varies depending on a value of a drive current, and illuminates a document with illumination light from the light-emitting device. A light receiving unit receives a light reflected from the document when the illumination light is emitted from the light-emitting device, and converts the received reflected light into image data at a predetermined sensitivity depending on the wavelengths of the received light. A current drive circuit supplies the drive current to turn on the light-emitting device. A wavelength distribution control unit produces two or more durations each having a different value of the drive current by controlling the current drive circuit during each main scanning to the document to produce two or more durations each having a different peak wavelength in each main scanning.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: January 13, 2015
    Assignee: Kyocera Mita Corporation
    Inventor: Masayoshi Takahashi
  • Patent number: 8928961
    Abstract: An image reading device has a light source section that includes light sources of a plurality of colors and that emits light in one color during a period for reading one line and switches the color of the light source lit cyclically from one line to the next, an image sensor that reads one color per line, a data generation section that generates image data of the light source color which is the color of the light source lit during reading, a memory that stores a plurality of lines' worth of the image data, and a remaining color component generation section that determines the pixel value of a color component other than the light source color based on the pixel values of pixels around a pixel of interest.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: January 6, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Kei Tanaka
  • Patent number: 8928955
    Abstract: A linear light source device illuminates a document properly, and an image reading device includes such a light source device. The light source device includes a light source and a light-guiding member. The light-guiding member introduces the light emitted from the light source from one end portion in x-direction, cause the light to travel in x-direction, and emits the light from a light exit portion at one end in z-direction, which is orthogonal to x-direction. The light-guiding member includes, at the other end in z-direction, a light-reflecting portion that reflects light to the light exit portion. One end face of the light-guiding member in y-direction, which is orthogonal to x- and z-directions, is inclined so as to become closer to the other end face in y-direction with decreasing distance from the light exit portion in z-direction. This allows light to easily travel to the light-reflecting portion.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: January 6, 2015
    Assignee: Rohm Co., Ltd.
    Inventors: Yoshinori Minamikawa, Tomoharu Horio, Okimoto Kondo
  • Patent number: 8922847
    Abstract: A plurality of light beams are simultaneously scanned on a surface of a photosensitive member. The surface of the photosensitive member has a curvature factor, and therefore, the light beams have different optical path lengths. Due to differences in the optical path length, a length (scanning width) of a scanning line of one light beam is different from that of another light beam. When a temperature of an optical scanning apparatus increases, the optical path length differences vary, so that differences in magnification between the beams also vary. Therefore, by obtaining correction amounts for the scanning widths depending on the temperature, the light beams are allowed to have substantially the same scanning width even when the temperature of the optical scanning apparatus varies.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: December 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Nakahata
  • Patent number: 8913306
    Abstract: Provided is a document reading apparatus capable of surely detecting the document cover open/closed state and the open/close operation, without being affected by the external environment. This document reading apparatus includes a light source, a linear reading device and a document cover. In this document reading apparatus, the light amount value of the light received by the linear reading section while the light source is turned on, and the light amount value of the light received by the linear reading section when the light source is turned off are used to detect the open/closed state and the open/close operation of the document cover, wherein the preparation for printing starts when the document cover has shifted from the open state to the closed state.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: December 16, 2014
    Assignee: Konica Minolta, Inc.
    Inventor: Takeo Katsuda
  • Patent number: 8913292
    Abstract: An image reading apparatus includes an image reading unit and a computational unit. The image reading unit includes a reference reflecting member that acts as a color reference, an illuminating unit that illuminates a part of the reference reflecting member and a sheet being transported in proximity thereto, a line sensor that reads an image formed on the sheet and the part of the reference reflecting member in proximity to the sheet in the sheet width direction, and a spectroscope that measures the spectral distribution of each of multiple patches for correcting color tones formed on the sheet and arranged in the sheet transport direction. The computational unit generates color tone correction data by performing computations based on the spectral distribution of each patch measured by the spectroscope, and the read values of the reference reflecting member obtained by the line sensor.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: December 16, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Sunao Ishizaki, Yoshifumi Takebe
  • Patent number: 8908238
    Abstract: In an illumination device that radiates light to an object to be irradiated placed on a predetermined placement surface, a first light guide body has a first incident surface located at an end thereof in a first direction, which receives light along the first direction, and a first exit surface extending along the first direction, which emits the light in a second direction crossing the first direction, thereby radiating light to the object to be irradiated, from the second direction, and a second light guide body has a second incident surface located at an end thereof in the first direction, which receives light along the first direction, and a second exit surface extending along the first direction, which emits the light in a third direction crossing the first direction and the second direction, thereby radiating light to the object to be irradiated, from the third direction.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: December 9, 2014
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yoshihiko Kurotsu
  • Patent number: 8902468
    Abstract: An image correction device includes a processor that executes a procedure. The procedure includes: correcting an image of a read object based on images stored in a storage section of a self-illuminated reference chart image of a reference chart of size corresponding to a mounting region where the read object is mounted that has been read in advance in a state illuminated by only a self-illumination light, a uniform light standard color chart image of a standard color chart that has been read in advance in a state illuminated by only uniform light from a predetermined uniform light source, and a uniform light reference chart image of the reference chart that has been read in advance in a state illuminated by only the uniform light, and based on the image of the read object and a peripheral light standard color chart image read by a reading section.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: December 2, 2014
    Assignee: Fujitsu Limited
    Inventor: Masayoshi Shimizu
  • Patent number: 8902481
    Abstract: In a method for document digitization, an apparatus generates a first image of a document sheet by irradiating the document sheet using a first light source and detecting the document sheet irradiated with light from the first light source, which enables detection of ink on the document sheet that defines a marked portion. The apparatus further generates a second image of the document sheet by irradiating the document sheet using a second light source and detecting the document sheet irradiated with light from the second light source, which enables detection of content on the document sheet. The apparatus further obtains a region of the second image that corresponds to the marked portion of the document sheet based on the first image.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: December 2, 2014
    Assignees: Lite-On Electronics (Guangzhou) Limited, Lite-On Technology Corp.
    Inventors: Yi Cai, Qi Ning, Chih-Po Lin
  • Patent number: 8896895
    Abstract: An image reading apparatus includes: a light amount adjustment portion which performs light amount adjustment on a light source such that the maximum value of the analog output of an image sensor does not exceed the upper limit value of an input voltage range of an A/D conversion portion but approaches the upper limit value; a temperature sensor which measures a temperature; and a storage portion which stores a temperature at the time of the light amount adjustment. When an absolute value of a temperature difference between a temperature stored in the storage portion and the current temperature is less than a threshold value, the light amount adjustment portion does not perform the light amount adjustment whereas when the absolute value is equal to or more than the threshold value, the light amount adjustment portion performs the light amount adjustment.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: November 25, 2014
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hisaji Kawai
  • Patent number: 8885231
    Abstract: Provided are: a light source that emits light; a light guide including: a curved portion including a light incident surface from which the light from the light source enters; and a linear portion including a light emission surface from which the light is emitted to an original, the linear portion coupled to the curved portion and extended in a main-scan direction, the curved portion reflecting the light entered from the light incident surface to the linear portion; and a frame that houses the light source, and the light guide, wherein the light guide includes an inclined portion inclined in a direction that increases an incident angle ? of the light, the inclined portion formed in a range of the linear portion where the light reflected by the curved portion enters.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: November 11, 2014
    Assignee: Canon Components, Inc.
    Inventor: Yoshihiko Tsumekawa
  • Patent number: 8885232
    Abstract: A scanner lens includes a first lens group with a positive refractive power, having a first positive lens and a second negative lens which are cemented, second to fifth lens groups having a third negative lens, a fourth positive lens, a fifth negative lens, and a sixth negative lens, respectively, arranged in order from an object side to an image side, and an aperture stop disposed between the first and second lens groups. The scanner lens satisfies the following three conditions: 0.01<BF/L<0.10 0.50<f1/f<9.5 0.20<d10/f<0.90 where BF is a back focus of the scanner lens, L is a total lens length, f1 is a focal length of e-line of the first lens group, f is a focal length of e-line of the entire lens system and d10 is an air space between the fifth and six lenses.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: November 11, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Hirotoshi Nakayama, Masahiro Itoh
  • Patent number: 8876355
    Abstract: A light guide includes an incident surface, an emitting surface, a reflecting surface, and a light guide section. The incident surface receives light from a plurality of light-emitting elements arranged at least in a first direction. The emitting surface outputs incident light from the incident surface. The reflecting surface includes a plurality of lenses having optical power in the first direction and a second direction different from the first direction and is provided to be opposed to the incident surface. The light guide section includes a surface including the incident surface, the emitting surface, and the reflecting surface, and causes the light that has entered from the incident surface to be reflected by the plurality of lenses of the reflecting surface to guide the light to the emitting surface.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: November 4, 2014
    Assignee: Sony Corporation
    Inventors: Koya Nomoto, Nobuaki Kuribara, Kazuhito Kunishima
  • Patent number: 8873113
    Abstract: According to embodiments, an image reading apparatus and an image reading method are disclosed. The image reading method comprises receiving a signal of an image color of an image on an original, and based on the received signal, controlling an illuminating section comprising a red light source, a green light source and a blue light source so that one of the red, green and blue light sources is turned off, while the remaining light sources are turned on. The image reading method further comprises receiving, on an image sensor, light from the turned-on light sources that is reflected off of the original, and processing the light received by the image sensor to form a monochromatic image.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 28, 2014
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Naoya Koseki, Mitsuru Hatano, Sueo Ueno, Hiroyuki Shiraishi, Yusuke Hashizume, Katsuya Nagamochi
  • Patent number: 8867105
    Abstract: An original reading apparatus including: a light source configured to illuminate an original; a line image sensor configured to convert light reflected from the original into an analog output signal; an AD converter configured to convert the analog output signal output from the line image sensor into a digital output signal; a control device configured to control the line image sensor and the AD converter; and a variable gain amplifier provided inside the line image sensor, for adjusting a signal range of the analog output signal.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: October 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryo Mikami
  • Patent number: 8866839
    Abstract: A signal adapting chromacity system to control that may include a signal conversion engine to receive a source signal designating a color of light defined by a two spatial plus luminance dimensional color space, such as the xxY color space. The signal conversion engine may convert the source signal to a three dimensional color space defined within a subset gamut of a full color gamut, such as an RGW, RBW, or GBW color space. The subset gamut may include a first color light, a second color light and a high efficacy light. The signal conversion engine may perform a conversion operation to convert the source signal to an output signal, using the output signal to drive light emitting diodes (LEDs). The conversion operation may be a matrix, angular or linear conversion operation.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: October 21, 2014
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, Robert R. Soler, David E. Bartine, Ran Zhou, Valerie A. Bastien, Matthew Regan, Eliza Katar Grove, Eric Bretschneider
  • Patent number: 8867108
    Abstract: An image reading device, includes an illumination optical system which has a light source unit configured to emit light being illuminating light to an illuminated object; an optical member configured to have a plurality of reflecting plates and collect the light emitted from the light source unit; and a plurality of reflecting members, the light emitted from the light source unit being collected by the optical member, and the collected light being reflected by the plurality of reflecting members to illuminate a reading target area on the illuminated object, and at least one reflecting surface of the optical member or the plurality of reflecting members having a relief structure.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: October 21, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Hibiki Tatsuno
  • Patent number: 8861045
    Abstract: An illuminator, a scanner module and an image scanning apparatus are provided. The scanner module includes an illuminator that includes a light source, a light guide extending in a main scanning direction to change a direction of the light from the light source, a guide holder recessed with a light guide mounting portion in which the light guide is mounted, and at least one supporting protrusion protruding from an entrance of the light guide mounting portion into the light guide mounting portion to support the light guide received in the light guide mounting portion. As the light guide is supported by the supporting protrusion formed at the entrance of the light guide mounting portion, it is possible to reduce deformation of the light guide and/or to prevent the light guide from being falling out of the light guide mounting portion when subjected to, e.g., a shock.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: October 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gyung Mo Tahk, Hyun Surk Kim, Kyung Rok Kim, Dong Hun Lee
  • Patent number: 8861044
    Abstract: A scanner module and an image scanning apparatus employing the same. The scanner module comprises an illuminator for illuminating light on an object to be scanned. The illuminator includes a light emitting diode, a light guide extending in a main scanning direction to change a direction of the light received from the light emitting diode, and at least one elastic member to elastically support at least one longitudinal end of the light guide. As the light guide is elastically supported by the elastic member, convex deformation or bowing of an emission face of the light guide due to thermal expansion can be reduced.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: October 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Kwon Kim, Dong Hua Lee, Hyun Surk Kim, Kyung Rok Kim
  • Patent number: 8861046
    Abstract: A multi-functional device comprising an image forming apparatus to form a printing image and a scanner module to scan an image. The scanner module includes an illuminator to illuminate a light to a document mount, a sensor unit to read an image information of an object placed on the document mount, and an imaging lens to focus the light reflected from the object onto the sensor unit. The illuminator includes a light source to emit light, a light guiding unit and changes a traveling path of the light emitted from the light source to illuminate the document mount, and a guide holder which comprises an installation part where the light guiding unit is installed, and a mounting part where the light source holder is mounted to provide the light source at least one side of the light guiding unit.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: October 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kaname Nagatani, Dong-hun Lee
  • Patent number: RE45496
    Abstract: An apparatus for compensating for pixel distortion while reproducing hologram data includes an extraction unit, a determination and calculation unit, a table, and a compensation unit. The extraction unit extracts a reproduced data image from a reproduced image frame including the reproduced data image and borders. The determination and calculation unit determines position values of edges of the extracted reproduced data image, and calculates average magnification error values of pixels within line data from position values of start and end point pixels thereof, which are based on the determined position values of the edges. The table stores misalignment compensation values for the pixels within the line data, wherein the misalignment compensation values correspond to predetermined references for average magnification error values.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: April 28, 2015
    Assignee: Maple Vision Technologies Inc.
    Inventor: Pil-Sang Yoon