Patents by Inventor Keigo Nakamura

Keigo Nakamura 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).

  • Image forming apparatus
    Patent number: 10295948
    Abstract: An image forming apparatus including an image bearer, a transfer-bias power source, an environment sensor, and a controller. The controller controls the transfer-bias power source to change the DC component and the AC component, according to the at least one of temperature and humidity detected by the environment sensor and a duty of the transfer bias. The duty is A/(A+B)×100[%] where A denotes an area on a return-directional side to move toner from the recording sheet back to the image bearer, relative to a center value (Voff) of a maximum value and a minimum value of the transfer bias in one cycle of a waveform of the transfer bias, and B denotes an area on a transfer-directional side to move the toner from the image bearer to the recording sheet, relative to the center value (Voff) in the one cycle.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: May 21, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Keigo Nakamura, Hirokazu Ishii, Kenji Sugiura, Takehide Mizutani, Atsushi Nagata, Naoto Kochi, Yuuji Wada, Shinya Tanaka
  • Image forming apparatus and image forming method
    Patent number: 10281848
    Abstract: An improved image forming apparatus includes an image bearer, a nip forming member, a transfer power source, and a controller. The controller switches a transfer mode between a first mode to transfer the toner image onto a first type sheet having a surface smoothness higher than a surface smoothness of a second type sheet and a second mode to transfer the toner image onto the second type sheet. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of greater than or equal to 50% that is a duty on the side of the opposite-peak value in the first mode. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of less than 50%, which is different from the opposite-peak duty of the first mode, in the second mode.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: May 7, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuuji Wada, Naoto Kochi, Hiroki Nakamatsu, Kazuki Yogosawa, Takahiro Suzuki, Shinya Tanaka, Kenji Sugiura, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Hirokazu Ishii, Takehide Mizutani, Atsushi Nagata, Keigo Nakamura
  • ORALLY DISINTEGRATING TABLET
    Publication number: 20190125666
    Abstract: An orally disintegrating tablet is disclosed possessing both advantageous hardness and disintegrability. The orally disintegrating tablet is (a) a compression molding product of a mixture comprising: a pharmaceutically active ingredient-containing composition selected from a group consisting of a pharmaceutically active ingredient-containing powder and pharmaceutically active ingredient-containing granules; rapidly disintegrating granules; and a lubricant, (b) wherein the rapidly disintegrating granules comprise a sugar and/or a sugar alcohol, and one or more organic and/or inorganic, hydrophilic and water-insoluble additives.
    Type: Application
    Filed: June 15, 2017
    Publication date: May 2, 2019
    Inventors: Tomoaki OKUSHIMA, Keigo NAKAMURA, Yutaka OKUDA
  • Medicine sorting apparatus
    Patent number: 10226399
    Abstract: An object of the present invention is to automatically identify a direction, a posture and characteristics such as a shape, a size, a type and an expiration date of a medicine and store the medicine with ensuring a high degree of freedom. A medicine supplying apparatus 1 includes an identifying part and a storing part. A storing area is defined at the time of storing the medicine according to a size of a medicine contained in characteristics of the medicine identified by the identifying part. The medicine is stored in the storing part in a state that identification information of the medicine is associated with the storing area. Further, the medicine supplying apparatus has a determination processing part which can determine whether or not the medicine is a target to be treated based on the characteristics of the medicine identified by the identifying part.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: March 12, 2019
    Assignee: YUYAMA MFG. CO., LTD.
    Inventors: Hirokazu Amano, Akitomi Kohama, Masatoshi Warashina, Junichi Iwaya, Hiromichi Tsuda, Takashi Ueno, Hidenori Tsuji, Keigo Nakamura, Mei Zhang
  • LEARNING DATA GENERATION SUPPORT APPARATUS, OPERATION METHOD OF LEARNING DATA GENERATION SUPPORT APPARATUS, AND LEARNING DATA GENERATION SUPPORT PROGRAM
    Publication number: 20190057503
    Abstract: Retrieval means analyzes character strings of a plurality of interpretation reports to retrieve an interpretation report in which a retrieval keyword is included. Registration means performs image processing with respect to a medical image corresponding to the retrieved interpretation report, extracts an anatomic region related to the retrieval keyword, and registers information indicating the anatomic region and the medical image as correct answer data in a case where the size of the extracted anatomic region is different from a standard size of the anatomic region or in a case where the shape of the extracted anatomic region is different from a standard shape of the anatomic region.
    Type: Application
    Filed: July 23, 2018
    Publication date: February 21, 2019
    Applicant: FUJIFILM Corporation
    Inventor: Keigo NAKAMURA
  • MEDICAL IMAGE PROCESSING APPARATUS, METHOD, AND PROGRAM
    Publication number: 20190019304
    Abstract: An image acquisition unit acquires a brain image of a subject. A non-bleeding region specifying unit specifies a non-bleeding region in the brain image, and a selection unit selects a standard brain image corresponding to at least one of the shape or the size of the non-bleeding region from a plurality of standard brain images. Then, a division unit divides the brain included in the brain image into regions based on the selected standard brain image.
    Type: Application
    Filed: July 10, 2018
    Publication date: January 17, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Mizuki TAKEI, Keigo NAKAMURA
  • LEARNING DATA GENERATION SUPPORT APPARATUS, OPERATION METHOD OF LEARNING DATA GENERATION SUPPORT APPARATUS, AND LEARNING DATA GENERATION SUPPORT PROGRAM
    Publication number: 20190005354
    Abstract: Any one of acquired images is set as a reference image, and an image other than the reference image is set as a comparison image. According to a portion or a disease, a first image processing of extracting an anatomic region is executed with respect to the reference image, and a second image processing of extracting an anatomic region is executed with respect to the comparison image. Whether the comparison image is available as correct answer data is determined using the anatomic region of the reference image and the anatomic region of the comparison image. The comparison image determined to be available as the correct answer data is registered as the correct answer data.
    Type: Application
    Filed: June 18, 2018
    Publication date: January 3, 2019
    Applicant: FUJIFILM Corporation
    Inventor: Keigo NAKAMURA
  • AUTOMATIC LAYOUT APPARATUS, AUTOMATIC LAYOUT METHOD, AND AUTOMATIC LAYOUT PROGRAM
    Publication number: 20180301216
    Abstract: Reception means receives examination data including a plurality of examination images. Similar examination data specifying means specifies sample examination data similar to the examination data using a similarity between each examination image included in the examination data and each sample image included in the sample examination data. Display means displays the examination image included in the examination data according to layout information associated with the sample examination data similar to the examination data.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 18, 2018
    Applicant: FUJIFILM Corporation
    Inventor: Keigo NAKAMURA
  • Image forming apparatus and image forming method
    Patent number: 10088781
    Abstract: An image forming apparatus includes a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip. The bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first and the second voltages being alternately output. A time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in the transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: October 2, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Tanaka, Naomi Sugimoto, Haruo Iimura, Shinji Aoki, Yasuhiko Ogino, Kazuchika Saeki, Keigo Nakamura
  • Radiation-image processing device and method
    Patent number: 10089728
    Abstract: Feature amount calculation unit determines that the diagnosis target is a bone portion of a subject, and calculates a feature amount of a density of the radiation image based on a soft region in a radiation image acquired by irradiating a photographic subject with radiation. An image processing unit performs image processing including gradation processing on the radiation image, such that the feature amount becomes the target density, to acquire a processed radiation image.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: October 2, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Keigo Nakamura, Tomoyuki Takahashi
  • Image area specification device and method, and X-ray image processing device and method
    Patent number: 10083503
    Abstract: A partial region extraction unit extracts a partial region including a distal portion in the vicinity of a boundary between a subject region including the distal portion and a void region from a radiological image including the distal portion of the human body. A designation region determination unit determines at least one of the void region and the partial region as a designation region for designating the partial region.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: September 25, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Keigo Nakamura, Tomoyuki Takahashi
  • MEDICAL IMAGE CAPTURING CONTROL DEVICE, METHOD, AND PROGRAM
    Publication number: 20180256135
    Abstract: A first determination unit performs first determination as to whether or not to store ultrasound images acquired in time series. In a case where the first determination is positive, a storage control unit stores ultrasound images, which are determined to be stored by the first determination unit, in a storage. A second determination unit performs second determination as to whether or not one or more ultrasound images to be stored are stored in the storage. In a case where the second determination is negative, a notification unit notifies that the one or more ultrasound images to be stored are not stored in the storage.
    Type: Application
    Filed: January 11, 2018
    Publication date: September 13, 2018
    Applicant: FUJIFILM Corporation
    Inventor: Keigo NAKAMURA
  • MEDICAL IMAGE CAPTURING CONTROL DEVICE, METHOD, AND PROGRAM
    Publication number: 20180256134
    Abstract: An imaging conditions acquisition unit acquires imaging conditions relevant to the positioning of an irradiation device and a radiation detector for acquiring a medical image. An imaging control unit controls the irradiation device and the like so as to acquire a pre-shot image or the medical image of the subject. A correction amount calculation unit calculates the correction amount of the imaging conditions based on the pre-shot image. A notification unit sends notification of the correction amount.
    Type: Application
    Filed: January 11, 2018
    Publication date: September 13, 2018
    Applicant: FUJIFILM Corporation
    Inventor: Keigo NAKAMURA
  • Image forming apparatus
    Patent number: 10073386
    Abstract: An image forming apparatus including an image bearer; a nip forming member, a nip width changing device, a power source; and a controller. The controller switches between a first mode and a second mode according to a predetermined condition. In the first mode, a duty of the transfer bias is a first duty and a width of a transfer nip is a first width. In the second mode, the duty of the transfer bias is a second duty lower than the first duty and the width of the transfer nip is a second width greater than the first width. The duty is (T?Tt)/T×100% where T denotes one cycle of the transfer bias, and Tt denotes a time period, in which the transfer bias is on a transfer-directional side relative to a time-averaged value of the transfer bias, in the one cycle.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: September 11, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Naomi Sugimoto, Hirokazu Ishii, Kenji Sugiura, Atsushi Nagata, Takehide Mizutani, Keigo Nakamura, Yuuji Wada, Naoto Kochi, Shinya Tanaka
  • Image forming apparatus
    Patent number: 10067454
    Abstract: An image forming apparatus includes an image bearer, an image forming device to form a toner image on the image bearer with toner, a power source to output a bias to transfer the toner image onto a recording medium, and control circuitry. The circuitry controls the power source to decrease a peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when a time-averaged voltage of the bias is on a transfer side of transferring the toner to the recording medium, from a median value of maximum and minimum voltages of the bias. The circuitry controls the power source to increase the peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when the time-averaged voltage of the bias is on a return side of returning the toner to the image bearer, from the median value.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: September 4, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Nagata, Shinya Tanaka, Hirokazu Ishii, Kenji Sugiura, Takehide Mizutani, Keigo Nakamura, Yuuji Wada, Naoto Kochi
  • Image processing device and method
    Patent number: 9959614
    Abstract: A first concentration range, which is a concentration range of a region of interest, and an output concentration range are determined in an input image. A compression table for compressing a dynamic range of the input image is generated on the basis of the first concentration range and the output concentration range. The first concentration range is changed at a predetermined ratio with respect to the changed output concentration range to determine a second concentration range. A new compression table is generated on the basis of the changed output concentration range and the second concentration range. The dynamic range of the input image is compressed using the new compression table.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: May 1, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Keigo Nakamura, Tomoyuki Takahashi
  • IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM
    Publication number: 20180061023
    Abstract: A density region setting unit sets a specific density region having a preset width with respect to a subject region of a radiation image. A compression processing unit performs a dynamic range compression process with respect to the radiation image on the basis of a first compression amount for compressing at least one of the maximum value or the minimum value among pixel values of the subject region into the specific density region and a preset second compression amount for compressing at least one of a high-density region or a low-density region in the specific density region, to generate a dynamic range compression image.
    Type: Application
    Filed: June 30, 2017
    Publication date: March 1, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Keigo NAKAMURA, Tomoyuki TAKAHASHI
  • IMAGE FORMING APPARATUS
    Publication number: 20170299987
    Abstract: An image forming apparatus including an image bearer; a nip forming member, a nip width changing device, a power source; and a controller. The controller switches between a first mode and a second mode according to a predetermined condition. In the first mode, a duty of the transfer bias is a first duty and a width of a transfer nip is a first width. In the second mode, the duty of the transfer bias is a second duty lower than the first duty and the width of the transfer nip is a second width greater than the first width. The duty is (T?Tt)/T×100% where T denotes one cycle of the transfer bias, and Tt denotes a time period, in which the transfer bias is on a transfer-directional side relative to a time-averaged value of the transfer bias, in the one cycle.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 19, 2017
    Inventors: Naomi SUGIMOTO, Hirokazu Ishii, Kenji Sugiura, Atsushi Nagata, Takehide Mizutani, Keigo Nakamura, Yuuji Wada, Naoto Kochi, Shinya Tanaka
  • IMAGE FORMING APPARATUS
    Publication number: 20170299994
    Abstract: An image forming apparatus includes an image bearer, an image forming device to form a toner image on the image bearer with toner, a power source to output a bias to transfer the toner image onto a recording medium, and control circuitry. The circuitry controls the power source to decrease a peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when a time-averaged voltage of the bias is on a transfer side of transferring the toner to the recording medium, from a median value of maximum and minimum voltages of the bias. The circuitry controls the power source to increase the peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when the time-averaged voltage of the bias is on a return side of returning the toner to the image bearer, from the median value.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 19, 2017
    Inventors: Atsushi NAGATA, Shinya Tanaka, Hirokazu Ishii, Kenji Sugiura, Takehide Mizutani, Keigo Nakamura, Yuuji Wada, Naoto Kochi
  • IMAGE FORMING APPARATUS
    Publication number: 20170300000
    Abstract: An image forming apparatus including an image bearer, a transfer-bias power source, an environment sensor, and a controller. The controller controls the transfer-bias power source to change the DC component and the AC component, according to the at least one of temperature and humidity detected by the environment sensor and a duty of the transfer bias. The duty is A/(A+B)×100[%] where A denotes an area on a return-directional side to move toner from the recording sheet back to the image bearer, relative to a center value (Voff) of a maximum value and a minimum value of the transfer bias in one cycle of a waveform of the transfer bias, and B denotes an area on a transfer-directional side to move the toner from the image bearer to the recording sheet, relative to the center value (Voff) in the one cycle.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 19, 2017
    Inventors: Keigo NAKAMURA, Hirokazu ISHll, Kenji SUGIURA., Takehide MIZUTANI, Atsushi NAGATA, Naoto KOCHI, Yuuji WADA, Shinya TANAKA