Patents by Inventor Tatsuya Ishii

Tatsuya Ishii 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: 11736626
    Abstract: A reading device and an image forming apparatus are provided. The reading device includes an image reading device configured to read an image on a recording medium being conveyed, a background device serving as a background image when the image is read by the image reading device, and a foreign-object detector configured to compare a first read image obtained as the background device is read by the image reading device with a second read image obtained as the background device and the recording medium are read by the image reading device to detect an attached foreign object. The image forming apparatus includes the reading device and an image forming device.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: August 22, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshio Konno, Tatsuya Ishii, Tohru Matsumoto, Kohta Aoyagi, Satoshi Nakayama, Hideyo Makino, Susumu Mikajiri, Kimiharu Yamazaki
  • Patent number: 11729868
    Abstract: An induction heating device is provided. The induction heating device comprises a plurality of induction heating devices disposed at intervals along the circumference of a ring-shaped workpiece, a setting unit for setting induction heating conditions, and a switching control unit. Each of the plurality of induction heating devices comprises heating coils disposed facing areas to be heated of the workpiece, a plurality of transformers connected to the heating coils in parallel, a plurality of matching units connected to any one of the plurality of transformers, an inverter unit having a rectifier unit and an inverter unit, an inverter control unit having a rectification control unit, and a group of switches.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: August 15, 2023
    Assignee: NETUREN CO., LTD.
    Inventors: Hitoshi Nakatsu, Masato Yoshioka, Yoshimasa Tanaka, Tsutomu Ito, Kenji Koyanagi, Masaki Sagae, Tatsuya Ishii, Yoshitaka Misaka, Yasuharu Ogawa
  • Patent number: 11716430
    Abstract: An image abnormality detecting device includes an image reader, an abnormality detector, a pattern holder, and circuitry. The image reader is configured to read an image on a recording medium. The abnormality detector is configured to detect abnormality of the image based on read information of the image on the recording medium, read by the image reader. The pattern holder has a check pattern and is disposed within a reading area of the image reader. The circuitry is configured to inspect a detecting operation of the abnormality detector based on read information of the check pattern read by the image reader.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: August 1, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kohta Aoyagi, Tohru Matsumoto, Kimiharu Yamazaki, Satoshi Nakayama, Ryosuke Ebinuma, Ryoh Ishizuka, Tatsuya Ishii
  • Patent number: 11700344
    Abstract: An image reading device includes a background unit, a reading unit, and circuitry. The background unit is configured to be a background in reading of a recording medium and includes a first region that is black and a second region that is different from the first region. The reading unit is configured to read an image with the background unit as the background, and generate a read value based on a result of reading the image with the background unit. The circuitry is configured to correct the read value based on a reference value generated by the reading unit by reading the second region of the background unit.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: July 11, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tatsuya Ishii, Hideki Hashimoto, Yoshio Konno
  • Publication number: 20230123255
    Abstract: To make the dimension of an electrostatic protection circuit small with the same maintained high in sensitivity. The electrostatic protection circuit is of the configuration that a first diode and a second diode are connected in series, wherein a semiconductor layer owned by each diode is configured to be sandwiched between a gate electrode and a conductive light shielding film. The light shielding film is formed to overlap with the semiconductor layer and has a wider area than the semiconductor layer. This results in having a gate covering the semiconductor layer from an upper side and a back gate covering the semiconductor layer from a lower side, so that the sensitivity can be maintained high irrespective of decreasing the electrostatic protection circuit in dimension.
    Type: Application
    Filed: December 21, 2022
    Publication date: April 20, 2023
    Inventors: Koji YAMAMOTO, Tatsuya ISHII
  • Publication number: 20230113044
    Abstract: An image reading device includes a sensor and circuitry. The sensor reads an image on a recording medium. The circuitry inspects the image and outputs an inspection result. The circuitry excludes an area of the recording medium as a first area from an area to be inspected, based on a type of the recording medium or a position of the recording medium with respect to a reading position at which the sensor reads the image, to determine a second area to be inspected. The circuitry outputs the inspection result based on the second area.
    Type: Application
    Filed: July 14, 2022
    Publication date: April 13, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Rie SUZUKI, Tatsuya ISHII
  • Patent number: 11577924
    Abstract: An edge position detecting apparatus includes a light emitting device, a detecting device, and a calculating circuit. The light emitting device includes a plurality of light sources with different emission wavelengths. The light emitting device irradiates a conveyed object with linear light along a width direction of the conveyed object, the width direction being perpendicular to a conveying direction of the conveyed object. The detecting device detects, at a plurality of positions in the width direction of the conveyed object, intensity of reflected light of light emitted by the light emitting device. The calculating circuit calculates, based on a detection result of the detecting device, a position of an edge of the conveyed object in the width direction.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: February 14, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Rie Suzuki, Tatsuya Ishii
  • Patent number: 11563039
    Abstract: To make the dimension of an electrostatic protection circuit small with the same maintained high in sensitivity. The electrostatic protection circuit is of the configuration that a first diode and a second diode are connected in series, wherein a semiconductor layer owned by each diode is configured to be sandwiched between a gate electrode and a conductive light shielding film. The light shielding film is formed to overlap with the semiconductor layer and has a wider area than the semiconductor layer. This results in having a gate covering the semiconductor layer from an upper side and a back gate covering the semiconductor layer from a lower side, so that the sensitivity can be maintained high irrespective of decreasing the electrostatic protection circuit in dimension.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: January 24, 2023
    Assignee: Japan Display Inc.
    Inventors: Koji Yamamoto, Tatsuya Ishii
  • Publication number: 20230010640
    Abstract: A reading device and an image forming apparatus are provided. The reading device includes an image reading device configured to read an image on a recording medium being conveyed, a background device serving as a background image when the image is read by the image reading device, and a foreign-object detector configured to compare a first read image obtained as the background device is read by the image reading device with a second read image obtained as the background device and the recording medium are read by the image reading device to detect an attached foreign object. The image forming apparatus includes the reading device and an image forming device.
    Type: Application
    Filed: May 26, 2022
    Publication date: January 12, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshio KONNO, Tatsuya ISHII, Tohru MATSUMOTO, Kohta AOYAGI, Satoshi NAKAYAMA, Hideyo MAKINO, Susumu MIKAJIRI, Kimiharu YAMAZAKI
  • Patent number: 11545102
    Abstract: According to an aspect, a display device includes a plurality of sub-pixels. Each of the sub-pixels includes a memory block including a memory configured to store therein sub-pixel data and a sub-pixel electrode coupled to the memory block. The memory includes first and second transistors configured to store therein the sub-pixel data in accordance with an electrical charge of a floating gate, the first and second transistors include respective drains that are coupled to each other, and a coupling point of the drains is coupled to a node. The sub-pixel electrode is coupled to the node, and each of the sub-pixels is configured to display an image based on a potential of the node.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: January 3, 2023
    Assignee: Japan Display Inc.
    Inventor: Tatsuya Ishii
  • Patent number: 11539863
    Abstract: A color chart includes a first portion and a second portion. The first portion includes no patch. The second portion includes a plurality of patches having different densities or luminances. The plurality of patches includes a reference patch indicating a color having a reference density or luminance. The reference patch is adjacent to the first portion. The plurality of patches is located in order of increasing density from the density of the color indicated by the reference patch, decreasing density from the density of the color indicated by the reference patch, increasing luminance from the luminance of the color indicated by the reference patch, or decreasing luminance from the luminance of the color indicated by the reference patch.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: December 27, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Rie Suzuki, Tatsuya Ishii
  • Patent number: 11521571
    Abstract: According to one embodiment, a display device including a plurality of pixels each of which includes a memory is provided. The display device includes a plurality of signal lines connected to the plurality of pixels, a signal line drive circuit configured to provide a data signal to one of the memories through one of the signal lines, a readout circuit configured to read the data signal in the memory through the signal line, and an output wire configured to externally output the data signal read by the readout circuit without passing through the signal line drive circuit.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: December 6, 2022
    Assignee: Japan Display Inc.
    Inventors: Yutaka Mitsuzawa, Tatsuya Ishii
  • Patent number: 11465667
    Abstract: A rack housing has a concave portion first inclined surface 45 on the inner side surface of an engaging concave portion located on the opening side that is inclined in a direction toward the back side while going outward in the radial direction. The rack bush has a convex portion first inclined surface on the outer side surface of an engaging convex portion that faces the concave portion first inclined surface, and that is inclined in a direction toward the back side while going outward in the radial direction. The convex portion first inclined surface is pressed outward in the radial direction against the concave portion first inclined surface, and the other outer side surface of the engaging convex portion facing the back side is pressed in the axial direction against the other inner side surface of the engaging concave portion facing the opening side.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: October 11, 2022
    Assignee: NSK Ltd.
    Inventor: Tatsuya Ishii
  • Publication number: 20220321708
    Abstract: A reading apparatus includes a reading device and processing circuitry. The reading device reads a recording medium. The processing circuitry outputs maintenance information based on read information read by the reading device.
    Type: Application
    Filed: March 22, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Tohru MATSUMOTO, Kohta AOYAGI, Tatsuya ISHII, Kimiharu YAMAZAKI, Satoshi NAKAYAMA, Ryosuke EBINUMA, Ryoh ISHITSUKA
  • Publication number: 20220318582
    Abstract: A reading apparatus includes a reading device and circuitry. The reading device reads a recording medium in a direction intersecting a conveyance direction of the recording medium. The circuitry detects a reference image for cutting processing of the recording medium, based on read information read by the reading device.
    Type: Application
    Filed: March 24, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Tatsuya ISHII, Kohta AOYAGI, Kimiharu YAMAZAKI, Tohru MATSUMOTO, Satoshi NAKAYAMA, Ryosuke EBINUMA, Ryoh ISHITSUKA
  • Patent number: 11461524
    Abstract: An information processing apparatus includes a central processing unit (CPU), a plurality of field-programmable gate arrays (FPGAs) connected to the CPU to communicate with the CPU, and a plurality of memories provided in a one-to-one relationship with the plurality of FPGAs. Each of the plurality of memories is configured to store configuration data of a corresponding one of the plurality of FPGAs. One of the plurality of FPGAs is configured to update the configuration data of each of the plurality of FPGAs stored in a corresponding one of the plurality of memories.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: October 4, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takayuki Shibata, Yuichi Sakurada, Tatsuya Ishii
  • Publication number: 20220291618
    Abstract: An image reading device includes an image reader and circuitry. The image reader is configured to read an image on a recording medium. The circuitry is configured to obtain defective image information and defect type information based on the image on the recording medium read by the image reader, and determine an abnormality of the image on the recording medium based on the defective image information and the defect type information.
    Type: Application
    Filed: February 28, 2022
    Publication date: September 15, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Kimiharu YAMAZAKI, Kohta AOYAGI, Tatsuya ISHII, Tohru MATSUMOTO, Satoshi NAKAYAMA, Ryosuke EBINUMA, Ryoh ISHITSUKA
  • Publication number: 20220286572
    Abstract: An image inspector includes a recording device and circuitry. The reading device is configured to read an image on a recording medium. The circuitry is configured to determine whether the recording medium has a wrinkle and an edge folding based on a plurality of positions on the image on the recording medium read by the reading device satisfying a predetermined relation. The circuitry is configured to determine whether the recording medium has the wrinkle based on the predetermined relation, and then determine whether the recording medium has the edge folding based on the predetermined relation.
    Type: Application
    Filed: February 23, 2022
    Publication date: September 8, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Satoshi NAKAYAMA, Tohru MATSUMOTO, Kohta AOYAGI, Ryosuke EBINUMA, Ryoh ISHITSUKA, Kimiharu YAMAZAKI, Tatsuya ISHII
  • Publication number: 20220286576
    Abstract: An image inspecting device includes an abnormality detector and circuitry. The abnormality detector is configured to detect an abnormality of an inspection object image. The circuitry is configured to set a non-detection area to be excluded from a detection object area within which the abnormality detector detects an image abnormality and set an area including an abnormality detection portion as the non-detection area when a detection result obtained by the abnormality detector satisfies a non-detection condition.
    Type: Application
    Filed: February 7, 2022
    Publication date: September 8, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Ryoh ISHITSUKA, Kohta AOYAGI, Ryosuke EBINUMA, Satoshi NAKAYAMA, Kimiharu YAMAZAKI, Tohru MATSUMOTO, Tatsuya ISHII
  • Patent number: D992103
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: July 11, 2023
    Assignee: BROTHER INDUSTRIES, LTD.
    Inventor: Tatsuya Ishii