Patents by Inventor Jun Nagai

Jun Nagai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11968343
    Abstract: An image processing apparatus includes a first obtaining unit configured to obtain an original image, a second obtaining unit configured to obtain a first multiplexed image created by embedding first information in the original image by a first method in which a shape of a pattern is changed, a third obtaining unit configured to obtain a second multiplexed image created by embedding second information in the first multiplexed image by a second method in which a density of a pattern is changed, the second information being a different type of information from the first information, and a control unit configured to perform control of outputting print data for a print original by using the second multiplexed image.
    Type: Grant
    Filed: February 14, 2023
    Date of Patent: April 23, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akitoshi Yamada, Hiroyasu Kunieda, Yoichi Kashibuchi, Jun Nagai
  • Publication number: 20230291857
    Abstract: The image processing apparatus includes: a first obtaining unit configured to obtain an original image; a second obtaining unit configured to obtain a first multiplexed image created by embedding first information in the original image by a first method in which a shape of a pattern is changed; a third obtaining unit configured to obtain a second multiplexed image created by embedding second information in the first multiplexed image by a second method in which a density of a pattern is changed, the second information being a different type of information from the first information; and a control unit configured to perform control of outputting print data for a print original by using the second multiplexed image.
    Type: Application
    Filed: February 14, 2023
    Publication date: September 14, 2023
    Inventors: Akitoshi YAMADA, Hiroyasu KUNIEDA, Yoichi KASHIBUCHI, Jun NAGAI
  • Publication number: 20230291858
    Abstract: An image processing apparatus includes: a first obtaining unit configured to obtain an original image; a second obtaining unit configured to obtain region information indicating first and second regions, the first region read in reading of a print original to have a higher density than the second region, the second region read in the reading to have a lower density than the first region; an embedding unit configured to embed information in the original image by embedding a pattern with a directivity in the first region and embed, in the second region, a pattern in which the number of pixels printed adjacent to printed pixels is smaller than that in the first region; and a control unit configured to perform control of outputting the print original by using a print image in which the patterns of the first and second regions are embedded by the embedding unit.
    Type: Application
    Filed: February 27, 2023
    Publication date: September 14, 2023
    Inventors: HIROYASU KUNIEDA, AKITOSHI YAMADA, YOICHI KASHIBUCHI, JUN NAGAI
  • Patent number: 10958808
    Abstract: An image forming includes a dither processing unit that applies a dither matrix to an image; an exposure unit that exposes a photosensitive drum to form an electrostatic latent image based on the image to which the dither matrix has been applied; a development unit that develops, using a developing material on a developing roller, the formed electrostatic latent image; and a control unit that, based on a print setting change instruction by a user, increases a circumferential speed of the developing roller relative to the circumferential speed of the photosensitive drum and decreases a screen ruling of the dither matrix to be applied by the dither processing unit.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: March 23, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Jun Nagai
  • Patent number: 10855883
    Abstract: Based on a target pixel of image data obtained by performing a halftone process on multi-gradation image data, the image processing apparatus estimates whether or not the target pixel is a pixel that corresponds to an edge portion of an object included in the image data, and, if the target pixel estimated to be positioned at the edge portion is a white pixel, determines whether or not the target pixel is an isolated pixel based on the peripheral pixels of the target pixel, and corrects the target pixel, which is determined to not be the isolated pixel, to a pixel having a predetermined density or more.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: December 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Jun Nagai
  • Patent number: 10845726
    Abstract: Density unevenness occurs in an output image in the scanning direction of a laser beam because the amount of the laser beam reaching the surface of the photoreceptor is different for each position in the scanning direction of the laser beam. The exposure amount (integrated light amount) per unit area on the photoreceptor is controlled to be substantially uniform by controlling the pulse widths of PWM signals according to the exposure positions of the laser beam, based on exposure amount correction data set according to the positions of the laser beam in the scanning direction.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: November 24, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Jun Nagai
  • Publication number: 20200052712
    Abstract: An image forming apparatus according to the present embodiment comprises: a dither processing unit that applies a dither matrix to an image; an exposure unit that exposes an photosensitive drum to form an electrostatic latent image, based on the image to which the dither matrix has been applied; a development unit that develops, using a developing material on a developing roller, the formed electrostatic latent image; and a control unit that, based on a print setting change instruction by a user, increases a circumferential speed of the developing roller relative to the circumferential speed of the photosensitive drum and decreases a screen ruling of the dither matrix to be applied by the dither processing unit.
    Type: Application
    Filed: August 2, 2019
    Publication date: February 13, 2020
    Inventor: Jun Nagai
  • Publication number: 20190208083
    Abstract: Based on a target pixel of image data obtained by performing a halftone process on multi-gradation image data, the image processing apparatus estimates whether or not the target pixel is a pixel that corresponds to an edge portion of an object included in the image data, and, if the target pixel estimated to be positioned at the edge portion is a white pixel, determines whether or not the target pixel is an isolated pixel based on the peripheral pixels of the target pixel, and corrects the target pixel, which is determined to not be the isolated pixel, to a pixel having a predetermined density or more.
    Type: Application
    Filed: December 17, 2018
    Publication date: July 4, 2019
    Inventor: Jun Nagai
  • Patent number: 10321015
    Abstract: To detect an image region to be an object of thinning processing appropriately and through the use of simple processing. An image processing apparatus detects a line region being a region sandwiched by white pixel regions and consisting only of a non-white pixel region, and detects a thinning candidate region being a region sandwiched by black pixel regions in the line region. A thinning region is detected from the inside of the thinning candidate region.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: June 11, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Jun Nagai
  • Publication number: 20190064694
    Abstract: Density unevenness occurs in an output image in the scanning direction of a laser beam because the amount of the laser beam reaching the surface of the photoreceptor is different for each position in the scanning direction of the laser beam. The exposure amount (integrated light amount) per unit area on the photoreceptor is controlled to be substantially uniform by controlling the pulse widths of PWM signals according to the exposure positions of the laser beam, based on exposure amount correction data set according to the positions of the laser beam in the scanning direction.
    Type: Application
    Filed: August 28, 2018
    Publication date: February 28, 2019
    Inventor: Jun Nagai
  • Patent number: 10084937
    Abstract: An image forming apparatus receives a print setting for image data, determines a density correction table to be applied to a position of a pixel in the image data based on the received print setting from among a plurality of stored density correction tables, and corrects a density of the image data using the determined density correction table.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: September 25, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Jun Nagai
  • Publication number: 20170223224
    Abstract: An image forming apparatus receives a print setting for image data, determines a density correction table to be applied to a position of a pixel in the image data based on the received print setting from among a plurality of stored density correction tables, and corrects a density of the image data using the determined density correction table.
    Type: Application
    Filed: January 19, 2017
    Publication date: August 3, 2017
    Inventor: Jun Nagai
  • Patent number: 9703245
    Abstract: An image forming apparatus that forms an image on a printing medium by an electrophotographic system in accordance with input image data, the apparatus including: a plurality of image forming units configured to form images in colors different from one another; a first determination unit configured to determine whether or not toner amount adjustment is necessary based on a possibility of the occurrence of a ghost for image data that is used for image formation in a second image forming unit located on the upstream side of a first image forming unit that is located on the downstream side in a conveyance direction of the printing medium of the plurality of image forming units; and a toner amount adjustment unit configured to make toner amount adjustment for the image data that is used for image formation in the second image forming unit in accordance with the determination results by the first determination unit.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: July 11, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Jun Nagai
  • Patent number: 9633290
    Abstract: Whether a pixel in an image is included in a region with at least a predetermined number of lines is determined; with regard to a pixel that is determined to be included in the region with at least the predetermined number of lines, a pixel value is reduced at the same reduction rate whether the pixel is an edge portion or a non-edge portion, and with regard to a pixel that is determined to be included in a region in which the number of lines is smaller than the predetermined number, a pixel value is reduced in such a manner that a reduction rate is higher when the pixel is the non-edge portion than when the pixel is the edge portion.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: April 25, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Jun Nagai
  • Patent number: 9553428
    Abstract: A power supply module includes a circuit board and a heatsink plate. The circuit board includes a first principal surface, a second principal surface, and side surfaces. Electronic components are mounted on the first principal surface. The heatsink plate includes a plate-shaped body portion that faces the first principal surface, and a plurality of fixing portions that extend at an angle from the body portion to face the side surfaces. The fixing portions are configured to come into contact with the second principal surface to secure the body portion to the circuit board.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: January 24, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Jun Nagai, Masanori Tsubono
  • Publication number: 20160223941
    Abstract: An image forming apparatus that forms an image on a printing medium by an electrophotographic system in accordance with input image data, the apparatus including: a plurality of image forming units configured to form images in colors different from one another; a first determination unit configured to determine whether or not toner amount adjustment is necessary based on a possibility of the occurrence of a ghost for image data that is used for image formation in a second image forming unit located on the upstream side of a first image forming unit that is located on the downstream side in a conveyance direction of the printing medium of the plurality of image forming units; and a toner amount adjustment unit configured to make toner amount adjustment for the image data that is used for image formation in the second image forming unit in accordance with the determination results by the first determination unit.
    Type: Application
    Filed: January 28, 2016
    Publication date: August 4, 2016
    Inventor: Jun Nagai
  • Patent number: 9398194
    Abstract: In a case where density adjustment is performed on a plurality of density ranges, adjustment setting values of adjacent density ranges affect one another, and therefore, tone reversal occurs depending on adjustment setting values. Consequently, control points to be used are determined in accordance with a combination of density ranges to be adjusted of the plurality of density ranges. Further, a density level at an intermediate point in a density range to be adjusted is adjusted based on an adjustment level of the density range to be adjusted. Then, by performing interpolation between the control points to be used including an intermediate point whose density level is adjusted, density characteristics data indicative of density characteristics is generated and then density adjustment of image data is performed.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: July 19, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Jun Nagai
  • Publication number: 20160203493
    Abstract: A service provider places a server at a data center and a service user searches a website, connecting a terminal to the Internet. When the service user specifies a URL in a website server via a terminal accessible to the Internet, data of content stored onto the server is read out and transmitted to the terminal of the service user. The server stores customer information received from the service user and performs a customer registration as a merchandise purchaser. After completing a customer registration, information advising a membership registration different from a customer registration is transmitted to the service user.
    Type: Application
    Filed: December 14, 2015
    Publication date: July 14, 2016
    Applicants: NIKON CORPORATION, NIKON SYSTEMS INC.
    Inventors: Shoko YOSHIDA, Jun NAGAI, Miho SEKI, Setsu MITSUHASHI, Akira OHMURA, Takashi TOIDA
  • Publication number: 20160142584
    Abstract: To detect an image region to be an object of thinning processing appropriately and through the use of simple processing. An image processing apparatus detects a line region being a region sandwiched by white pixel regions and consisting only of a non-white pixel region, and detects a thinning candidate region being a region sandwiched by black pixel regions in the line region. A thinning region is detected from the inside of the thinning candidate region.
    Type: Application
    Filed: January 20, 2016
    Publication date: May 19, 2016
    Inventor: Jun Nagai
  • Patent number: 9280115
    Abstract: An image forming apparatus comprises: a counting unit which counts the number of pixels at each tone level in a halftone image corresponding to an input image; a determination unit which determines a halftone region in the halftone image; an acquisition unit which acquires tone characteristic information of an output density of the image forming apparatus; a correction unit which obtains a density in a region to be formed by using a developing material from the number of pixels at each of the tone levels and information of the halftone region and correct the density in accordance with the tone characteristic information; and a first prediction unit which predicts a consumption amount of the developing material by using the density corrected by the correction unit.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: March 8, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Jun Nagai