Patents by Inventor Masatoshi Murakami

Masatoshi Murakami 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).

  • Publication number: 20220004114
    Abstract: An image forming apparatus superimposes a plurality of color images each formed of a single-color developer to form a superimposed color image. The image forming apparatus includes a transfer belt and processing circuitry. The processing circuitry forms, as a correction pattern, combination patterns arranged along a conveyance direction of the color images and including a first pattern, a second pattern, and a third pattern. A formation interval of the first pattern constituting one combination pattern is shorter than a formation interval between one horizontal line of the first pattern constituting the one combination pattern and another horizontal line of the first pattern constituting another combination pattern. The one horizontal line is opposite the other horizontal line.
    Type: Application
    Filed: July 1, 2021
    Publication date: January 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventor: Masatoshi Murakami
  • Patent number: 10782626
    Abstract: An image forming apparatus includes a transfer belt, a plurality of endless rotational bodies, an image forming device, a pattern sensor, and processing circuitry. The image forming device forms correction patterns including a first pattern as a straight line pattern orthogonal to a conveyance direction of the correction patterns and a second pattern as one of a straight line pattern orthogonal to and an oblique line pattern inclined with respect to the conveyance direction. The processing circuitry causes the image forming device to form the correction patterns using a correction value such that the second pattern included in one correction pattern on the transfer belt is same in color and shape as the second pattern included in at least one correction pattern of a preceding correction pattern and a following correction pattern in the conveyance direction with respect to the one correction pattern.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: September 22, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masatoshi Murakami, Yoshinori Shirasaki, Masayuki Hayashi
  • Patent number: 10530601
    Abstract: According to one embodiment, an electronic apparatus capable of communicating with a second electronic apparatus of a first user, the electronic apparatus, the electronic apparatus includes a receiver, electronic circuitry, a speaker and a transmitter. The electronic circuitry configured to determine whether the sound of the second user is output by the electronic apparatus or the second electronic apparatus, using at least one of an image of around the first user and sound of around the first user. The speaker configured to output the sound of the second user, is output by the electronic apparatus. The transmitter configured to transmit the signal of the sound of the second user to the second electronic apparatus, is output by the second electronic apparatus.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: January 7, 2020
    Assignees: QINGDAO HISENSE ELECTRONICS CO., LTD., TOSHIBA VISUAL SOLUTIONS CORPORATION
    Inventor: Masatoshi Murakami
  • Publication number: 20190369518
    Abstract: An image forming apparatus includes a transfer belt, a plurality of endless rotational bodies, an image forming device, a pattern sensor, and processing circuitry. The image forming device forms correction patterns including a first pattern as a straight line pattern orthogonal to a conveyance direction of the correction patterns and a second pattern as one of a straight line pattern orthogonal to and an oblique line pattern inclined with respect to the conveyance direction. The processing circuitry causes the image forming device to form the correction patterns using a correction value such that the second pattern included in one correction pattern on the transfer belt is same in color and shape as the second pattern included in at least one correction pattern of a preceding correction pattern and a following correction pattern in the conveyance direction with respect to the one correction pattern.
    Type: Application
    Filed: May 28, 2019
    Publication date: December 5, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Masatoshi Murakami, Yoshinori Shirasaki, Masayuki Hayashi
  • Patent number: 10412777
    Abstract: According to one embodiment, system includes a receiver and electronic circuitry. The electronic circuitry configured to determine whether the first user is present near a first apparatus of apparatuses, determine whether the first user is present near a second apparatus of the apparatuses, establish a first communication route with the first apparatus for the communication with the first user in response to the request, if it is determined that the first user is present near the first apparatus, and establish a second communication route with the second apparatus for the communication with the first user in response to the request, if it is determined that the first user is present near the second apparatus.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: September 10, 2019
    Assignees: Qingdao Hisense Electronics Co., Ltd., Toshiba Visual Solutions Corporation
    Inventor: Masatoshi Murakami
  • Publication number: 20180343138
    Abstract: According to one embodiment, an electronic apparatus capable of communicating with a second electronic apparatus of a first user, the electronic apparatus, the electronic apparatus includes a receiver, electronic circuitry, a speaker and a transmitter. The electronic circuitry configured to determine whether the sound of the second user is output by the electronic apparatus or the second electronic apparatus, using at least one of an image of around the first user and sound of around the first user. The speaker configured to output the sound of the second user, is output by the electronic apparatus. The transmitter configured to transmit the signal of the sound of the second user to the second electronic apparatus, is output by the second electronic apparatus.
    Type: Application
    Filed: December 28, 2017
    Publication date: November 29, 2018
    Inventor: Masatoshi Murakami
  • Publication number: 20180338341
    Abstract: According to one embodiment, system includes a receiver and electronic circuitry. The electronic circuitry configured to determine whether the first user is present near a first apparatus of apparatuses, determine whether the first user is present near a second apparatus of the apparatuses, establish a first communication route with the first apparatus for the communication with the first user in response to the request, if it is determined that the first user is present near the first apparatus, and establish a second communication route with the second apparatus for the communication with the first user in response to the request, if it is determined that the first user is present near the second apparatus.
    Type: Application
    Filed: December 28, 2017
    Publication date: November 22, 2018
    Inventor: Masatoshi Murakami
  • Publication number: 20180160037
    Abstract: According to one embodiment, electronic apparatus configured to control camera, includes communication circuitry and processor circuitry. The communication circuitry capable of communicating with a first electronic terminal of a first user or a second electronic terminal of a second user, when a plurality of electronic terminals includes the first electronic terminal and the second electronic terminal are located within a first communication distance from the electronic apparatus. The processor circuitry configured to start a capturing of the camera when the first electronic terminal is located outside of the first communication distance, and stop the capturing of the camera when at least the first electronic terminal is located within the first communication distance.
    Type: Application
    Filed: January 30, 2017
    Publication date: June 7, 2018
    Inventor: Masatoshi Murakami
  • Patent number: 9746795
    Abstract: An optical writing control device controls emission or lighting of a light source onto a photoconductor surface in a latent image forming process and a discharge process, by either setting a light emission time longer in the discharge process or setting a resolution in a sub-scanning direction lower in the discharge process, compared to the latent image forming process.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: August 29, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Motohiro Kawanabe, Yoshinori Shirasaki, Masayuki Hayashi, Masatoshi Murakami, Yuusuke Kohri, Akinori Yamaguchi
  • Publication number: 20170131973
    Abstract: Mismatches between software specifications are detected by dependence relation verification.
    Type: Application
    Filed: March 25, 2014
    Publication date: May 11, 2017
    Applicant: HITACHI, LTD.
    Inventors: Masatoshi Murakami, Yuichiroh Nakagawa, Ryota Mibe, Naoki Furuya
  • Patent number: 9618875
    Abstract: An optical writing control device and method are provided, for controlling light emission of a plurality of light sources to form an electrostatic latent image on a photosensitive element, the light sources including a plurality of light emitting elements disposed in a line and classified into a plurality of groups, including frequency converter circuitry configured to acquire image information to be formed as the electrostatic latent image; and a light source controller configured to control the plurality of light sources based on pixel information generated from the acquired image information, wherein the light source controller is further configured to control the light emission of the plurality of light sources by classifying the light emitting elements into the plurality of groups, and shifting a timing of light emission from one group of the plurality of groups to a next group of the plurality of groups, and determine a common illuminating period for the light emitting elements of at least one light sou
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: April 11, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akinori Yamaguchi, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Yuusuke Kohri, Masatoshi Murakami
  • Patent number: 9535360
    Abstract: An image forming apparatus comprises: a plurality of exposure units, each of the exposure units including a plurality of light emitting elements that are arranged in a main scanning direction; a calculating unit that, with respect to each of the exposure units, calculates a pre-charge period that is a period during which a pre-charge is performed on at least any of the light emitting elements included in a corresponding exposure unit; and an emission control unit that, with respect to each of the exposure units, causes the light emitting elements included in a corresponding exposure unit to emit light such that a pre-charge period of at least any of the exposure units is shifted with respect to pre-charge periods of remaining ones of the exposure units.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: January 3, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Motohiro Kawanabe, Masayuki Hayashi, Masatoshi Murakami, Yoshinori Shirasaki, Yuusuke Kohri, Akinori Yamaguchi
  • Patent number: 9529295
    Abstract: An optical writing control device and method are provided, for controlling light emission of a plurality of light sources to form an electrostatic latent image on a photosensitive element, the light sources including a plurality of light emitting elements disposed in a line, including frequency converter circuitry configured to acquire image information to be formed as the electrostatic latent image; and a light source controller configured to control the plurality of light sources based on pixel information generated from the acquired image information, the light source controller being further configured to control the light emission of the plurality of light sources by classifying the light emitting elements into a plurality of groups, and shifting the timing of light emission from one group of the plurality of groups to a next group of the plurality of groups, and determine an illuminating period for each light source of the plurality of light sources based on the shifted timing of light emission among th
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: December 27, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuusuke Kohri, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Masatoshi Murakami, Akinori Yamaguchi
  • Publication number: 20160370728
    Abstract: There is provided an image forming apparatus for forming a latent image on a photoconductor by causing a plurality of light emitting bodies to emit light, the image forming apparatus comprising: a storage unit configured to store respective performances of the light emitting bodies; a control unit configured to control the light emitting bodies to emit the light; wherein the control unit adjusts light emitting periods of the light emitting bodies based on the performances of the light emitting bodies so that a capability of one light emitting body of the light emitting bodies for forming the latent image becomes closer to a capability of another light emitting body of the light emitting bodies for forming the latent image.
    Type: Application
    Filed: June 15, 2016
    Publication date: December 22, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Akinori YAMAGUCHI, Masayuki HAYASHI, Motohiro KAWANABE, Yoshinori SHIRASAKI, Yuusuke KOHRI, Masatoshi MURAKAMI
  • Patent number: 9482985
    Abstract: An image forming apparatus includes multiple exposure units each including multiple light emitting elements, a reading unit that reads data to be used for exposure by each one of the exposure units, one at a time from the exposure unit by the time the exposure units starts exposure, a storing unit that stores the data read by the reading unit, and a transfer unit that transfers the data stored in the storing unit to the exposure unit by the time the exposure unit starts exposure.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: November 1, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuusuke Kohri, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Masatoshi Murakami, Akinori Yamaguchi
  • Publication number: 20160274481
    Abstract: An optical writing control device controls emission or lighting of a light source onto a photoconductor surface in a latent image forming process and a discharge process, by either setting a light emission time longer in the discharge process or setting a resolution in a sub-scanning direction lower in the discharge process, compared to the latent image forming process.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 22, 2016
    Inventors: Motohiro KAWANABE, Yoshinori SHIRASAKI, Masayuki HAYASHI, Masatoshi MURAKAMI, Yuusuke KOHRI, Akinori YAMAGUCHI
  • Patent number: 9360792
    Abstract: An optical writing controller controls emission of a light source device including multiple light emitting element rows each constituted by multiple light emitting elements arranged in a sub-scanning direction to form an electrostatic latent image on a photoconductor. The optical writing controller includes an image information acquisition unit to acquire image information on an image to be formed as the electrostatic latent image; a light source control unit to sequentially control emission of the multiple light emitting elements on the basis of information on pixels generated on the basis of the acquired image information; an error information acquisition unit to acquire information indicating an error of a direction in which the light emitting elements are arranged with respect to the sub-scanning direction; and an adjustment value generation unit to generate an adjustment value for adjusting a light quantity of each light emitting element on the basis of the error.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: June 7, 2016
    Assignee: Ricoh Company, Limited
    Inventors: Masatoshi Murakami, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Yuusuke Kohri, Akinori Yamaguchi
  • Patent number: 9342019
    Abstract: An image forming apparatus includes an exposure control unit that performs control, based on a shift-amount of an exposure position from an ideal position, the shift-amount being obtained from a detection-result of a misregistration correcting pattern image, to shift at least one of an exposure timing corresponding to first image data which is input to one of two electric cables in contact with a target electric cable and an exposure timing corresponding to second image data which is input to another one of the two electric cables, with respect to an exposure timing corresponding to target image data being input to the target electric cable both sides of which are in contact with the two other electric cables, among a plurality of the electric cables which corresponds respectively to a plurality of the exposure units provided for each of a plurality of colors.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: May 17, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshinori Shirasaki, Masayuki Hayashi, Motohiro Kawanabe, Masatoshi Murakami
  • Publication number: 20160109822
    Abstract: An optical writing control device and method are provided, for controlling light emission of a plurality of light sources to form an electrostatic latent image on a photosensitive element, the light sources including a plurality of light emitting elements disposed in a line, including frequency converter circuitry configured to acquire image information to be formed as the electrostatic latent image; and a light source controller configured to control the plurality of light sources based on pixel information generated from the acquired image information, the light source controller being further configured to control the light emission of the plurality of light sources by classifying the light emitting elements into a plurality of groups, and shifting the timing of light emission from one group of the plurality of groups to a next group of the plurality of groups, and determine an illuminating period for each light source of the plurality of light sources based on the shifted timing of light emission among th
    Type: Application
    Filed: October 13, 2015
    Publication date: April 21, 2016
    Inventors: Yuusuke KOHRI, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Masatoshi Murakami, Akinori Yamaguchi
  • Patent number: 9298123
    Abstract: The device comprises: a light emission control unit forming an latent image on a photoconductor; a correction value calculation unit calculating a correction pattern for correcting a transfer position where a developer image of the latent image transfers to a conveying member; and an angle adjustment processing unit that determines an angle of an oblique line pattern included in the correction pattern on the basis of a detection signal of an angle adjustment pattern including a plurality of continuous oblique line patterns, wherein the light emission control unit controls a light to emit so that a plurality of oblique line patterns having different inclinations relative to a conveying direction of the conveying member are continuously formed to draw the angle adjustment pattern, and controls the light to emit so that an oblique line pattern having the determined angle is formed in the correction pattern to draw the correction pattern.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: March 29, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masatoshi Murakami, Tatsuya Miyadera