Patents by Inventor Tadashi Shinohara

Tadashi Shinohara 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: 20190145920
    Abstract: The present invention improves the sensitivity and the responsiveness of a dryness/wetness responsive sensor utilizing a galvanic current, allowing for downsizing of the dryness/wetness responsive sensor. Instead of the conventional structure in which an anode electrode and a cathode electrode are stacked with an intervening insulator, the present invention employs a structure in which both electrodes run in juxtaposition with each other on an insulating substrate in the form of, for example, a comb-shaped electrode as shown in the drawing. By utilizing a semiconductor manufacturing process or any other micro/nano-fabrication technology, an inter-electrode distance can be extremely shortened as compared with the conventional sensors, allowing enhancing the sensitivity per unit footprint of the electrodes. Accordingly, a decrease in the size of the dryness/wetness responsive sensor can be easily achieved.
    Type: Application
    Filed: December 19, 2018
    Publication date: May 16, 2019
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jin KAWAKITA, Tadashi SHINOHARA, Toyohiro CHIKYO, Toshihide NABATAME, Akihiko OHI, Tomoko OHKI
  • Patent number: 10267756
    Abstract: A dryness/wetness responsive sensor having decreased size, and improved sensitivity and responsiveness. The present invention comprises a thin wire of a first metal and a thin wire of a second metal, which is different from the first metal, wherein the thin wires run in juxtaposition with each other on an insulating substrate, and wherein the spacing between the first thin wire and the second thin wire is in the range of 5 nm or more and less than 20 ?m.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: April 23, 2019
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jin Kawakita, Tadashi Shinohara, Toyohiro Chikyo, Toshihide Nabatame, Akihiko Ohi, Tomoko Ohki
  • Publication number: 20170167995
    Abstract: The present invention improves the sensitivity and the responsiveness of a dryness/wetness responsive sensor utilizing a galvanic current, allowing for downsizing of the dryness/wetness responsive sensor. Instead of the conventional structure in which an anode electrode and a cathode electrode are stacked with an intervening insulator, the present invention employs a structure in which both electrodes run in juxtaposition with each other on an insulating substrate in the form of, for example, a comb-shaped electrode as shown in the drawing. By utilizing a semiconductor manufacturing process or any other micro/nano-fabrication technology, an inter-electrode distance can be extremely shortened as compared with the conventional sensors, allowing enhancing the sensitivity per unit footprint of the electrodes. Accordingly, a decrease in the size of the dryness/wetness responsive sensor can be easily achieved.
    Type: Application
    Filed: July 21, 2015
    Publication date: June 15, 2017
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jin KAWAKITA, Tadashi SHINOHARA, Toyohiro CHIKYO, Toshihide NABATAME, Akihiko OHI, Tomoko OHKI
  • Patent number: 9310708
    Abstract: An optical scanning device includes a light source emitting light to form an image by optical scanning; and a control section generating a control signal, which is for turning on and off the light source, based on an image signal. Further, the control section generates a pulse signal having a predetermined time width when the image signal indicates that the light source is to be turned off.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: April 12, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Katsuhiko Maeda, Tadashi Shinohara, Yuugo Matsuura
  • Patent number: 9201331
    Abstract: An image forming apparatus includes: at least one first image carrier configured to carry an electrostatic latent image thereon; an image writing unit; a second image carrier configured to move along a transfer position facing to the at least one first image carrier; a first transfer unit provided opposite to the at least one first image carrier; a second transfer unit configured to transfer the subject image to a transfer material; a test pattern detection unit configured to detect the test pattern image; a control unit configured to correct an image forming condition of the subject image based on a result from the detection of the test pattern image, wherein the test pattern image is provided on the second image carrier at an area being out of the image forming area and being at the same range as the subject image in a scanning direction.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: December 1, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Tadashi Shinohara, Yasuhiro Abe, Hiroaki Nishina, Yutaka Ohmiya
  • Patent number: 9091987
    Abstract: An image forming apparatus includes a first image forming unit that forms toner images based on image data on first image carriers; a second image carrier, on which the toner images formed on the first image carriers are transferred; a second image forming unit that transfers the toner images transferred on the second image carrier onto a transfer medium; a test pattern generating unit that generates a test pattern group with a predetermine length in a moving direction of the second image carrier; and an adjusting unit that determines a method to adjust an image formation condition for the first image forming unit using the test pattern group, based on a relationship between the predetermined length and a length of an image area, in which a print image based on the image data is formed, in a sub-scanning direction corresponding to the moving direction of the second image carrier.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: July 28, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Yutaka Ohmiya, Tadashi Shinohara, Yasuhiro Abe, Hiroaki Nishina
  • Publication number: 20150054902
    Abstract: An optical scanning device includes a light source emitting light to form an image by optical scanning; and a control section generating a control signal, which is for turning on and off the light source, based on an image signal. Further, the control section generates a pulse signal having a redetermined time width when the image signal indicates that the light source is to be turned off.
    Type: Application
    Filed: July 18, 2014
    Publication date: February 26, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Katsuhiko MAEDA, Tadashi SHINOHARA, Yuugo MATSUURA
  • Patent number: 8929783
    Abstract: An image forming apparatus comprising: at least one first image carrier; an image writing unit configured to write the electrostatic latent image including a test pattern; a second image carrier configured to move along a transfer position facing to the at least one first image carrier; an image forming unit configured to transfer the subject image transferred on the second image carrier to a transfer material; a detector configured to detect the test pattern image; and a controller configured to correct an image forming condition of the subject image, wherein during a period from the detection of the test pattern to the writing a subsequent subject image, the controller calculates a correction amount of a correction matter, and reflects the calculated amount in the image forming condition of the subject image.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: January 6, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Hiroaki Nishina, Tadashi Shinohara, Yasuhiro Abe, Yutaka Ohmiya
  • Publication number: 20140072351
    Abstract: An image forming apparatus comprising: at least one first image carrier; an image writing unit configured to write the electrostatic latent image including a test pattern; a second image carrier configured to move along a transfer position facing to the at least one first image carrier; an image forming unit configured to transfer the subject image transferred on the second image carrier to a transfer material; a detector configured to detect the test pattern image; and a controller configured to correct an image forming condition of the subject image, wherein during a period from the detection of the test pattern to the writing a subsequent subject image, the controller calculates a correction amount of a correction matter, and reflects the calculated amount in the image forming condition of the subject image.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 13, 2014
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Hiroaki NISHINA, Tadashi SHINOHARA, Yasuhiro ABE, Yutaka OHMIYA
  • Publication number: 20140072316
    Abstract: An image forming apparatus includes: at least one first image carrier configured to carry an electrostatic latent image thereon; an image writing unit; a second image carrier configured to move along a transfer position facing to the at least one first image carrier; a first transfer unit provided opposite to the at least one first image carrier; a second transfer unit configured to transfer the subject image to a transfer material; a test pattern detection unit configured to detect the test pattern image; a control unit configured to correct an image forming condition of the subject image based on a result from the detection of the test pattern image, wherein the test pattern image is provided on the second transfer unit at an area being out of the image forming area and being at the same range as the subject image in a scanning direction.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 13, 2014
    Inventors: Tadashi Shinohara, Yasuhiro Abe, Hiroaki Nishina, Yutaka Ohmiya
  • Publication number: 20140072315
    Abstract: An image forming apparatus includes a first image forming unit that forms toner images based on image data on first image carriers; a second image carrier, on which the toner images formed on the first image carriers are transferred; a second image forming unit that transfers the toner images transferred on the second image carrier onto a transfer medium; a test pattern generating unit that generates a test pattern group with a predetermine length in a moving direction of the second image carrier; and an adjusting unit that determines a method to adjust an image formation condition for the first image forming unit using the test pattern group, based on a relationship between the predetermined length and a length of an image area, in which a print image based on the image data is formed, in a sub-scanning direction corresponding to the moving direction of the second image carrier.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 13, 2014
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Yutaka OHMIYA, Tadashi SHINOHARA, Yasuhiro ABE, Hiroaki NISHINA
  • Patent number: 8305637
    Abstract: A multicolor image forming apparatus includes an exposure unit to direct optical beams for optically writing different single-color images on image carriers, respectively, a pattern forming unit to form a positioning pattern on a transport member, a pattern detector to detect the positioning pattern, disposed above the transport member, a positional data detector disposed on a scanning line to detect positional data in a sub-scanning direction of the optical beams, an adjustment unit, and a storage unit. The adjustment unit detects positional deviations among the different single-color images based on detection results generated by both the pattern detector and the positional data detector, respectively, and then corrects the positional deviations. The storage unit stores as reference data the positional data in the sub-scanning direction of the optical beams detected when the positional deviations are corrected.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: November 6, 2012
    Assignee: Ricoh Company, Limited
    Inventor: Tadashi Shinohara
  • Patent number: 8228539
    Abstract: An image forming apparatus, which includes a plurality of image forming portions transferring a yellow image, a magenta image, a cyan image, and a black image formed on a plurality of photoconductor drums to a sheet conveyed on a conveying belt, a marking unit forming marks on the conveying belt, a detecting unit detecting the marks with three or more sensors aligned in a direction normal to a direction in which the sheet is conveyed, a calculating unit calculating an amount of color misalignment in accordance with results detected by the detecting unit, and a correcting unit correcting the color misalignment in accordance with the calculated amount of color misalignment, wherein the calculating unit calculates an amount of skew difference in accordance with results detected by two sensors among the three or more sensors, wherein one sensor of the two sensors is disposed on one end of the three or more sensors and the other sensor of the two sensors is disposed on the other end of the three or more sensors, w
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: July 24, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Tadashi Shinohara
  • Patent number: 7853159
    Abstract: An image forming apparatus including a plurality of detachable image forming devices each configured to form a color image, an image carrying device configured to carry the color images sequentially overlaid into a single color image, an exchange detecting device configured to detect an exchange operation of the plurality of detachable image forming devices, a test pattern reading device configured to read a predetermined test pattern formed by the plurality of detachable image forming devices on the image carrying device, and a controller configured to instruct the plurality of detachable image forming devices to form the predetermined test pattern on the image carrying device when the exchange detecting device detects the exchange operation, and to perform a color image position adjustment based on readings of the predetermined test pattern by the test pattern reading device.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: December 14, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuo Yamanaka, Kazuhiko Kobayashi, Tadashi Shinohara, Jun Hosokawa
  • Patent number: 7800335
    Abstract: A method, apparatus, and program for driving a motor in a feedback control system, capable of suppressing oscillation of the motor are disclosed. A motor drive controller includes a drive motor, a detector, and a motor drive controller. The drive motor drives a moving body around a target moving speed. The detector detects a current moving speed of the moving body and output it as a detector pulse signal. The controller calculates a difference between the current moving speed and the target moving speed, calculates a control value based on the difference, calculates a pulse rate of a drive pulse signal based on the control value after having controlled the control value to be within a predetermined value, and feedback controls the drive motor based on the pulse rate.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: September 21, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Andoh, Tadashi Shinohara, Yuuji Matsuda, Kazuhiko Kobayashi, Nobuto Yokokawa, Masato Yokoyama, Yohhei Miura, Toshiyuki Takahashi, Jun Hosokawa
  • Patent number: 7770998
    Abstract: A maintenance pattern forming method includes conveying, generating, and forming. The conveying conveys a transfer member on a surface of a conveying member such that there is a spacing area between two adjacent transfer members on the surface of the conveying member. The generating generates a timing signal for at least one of a plurality of colors formed by a color image forming apparatus. The forming forms at least one of a process control pattern, a position adjustment pattern, and a blade curl suppression pattern onto the spacing area based on the timing signal.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: August 10, 2010
    Assignee: Ricoh Co., Ltd.
    Inventors: Tadashi Shinohara, Shinji Kobayashi, Takao Watanabe, Nobuyoshi Kaima, Yuichiro Shukuya, Yoshiaki Kawai, Kazuyuki Sato
  • Patent number: 7715768
    Abstract: A color image forming device comprises a plurality of first image support mediums, a scanning exposure unit, a second image support medium, a second-image-support-medium transport unit, a transfer unit, a correction-pattern-image forming unit, a pattern measurement unit, and a control unit. The correction-pattern-image forming unit is configured to reduce the total time for forming a sequence of correction pattern images of color components.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: May 11, 2010
    Assignee: Ricoh Company, Ltd.
    Inventor: Tadashi Shinohara
  • Publication number: 20100067937
    Abstract: An image forming apparatus including a plurality of detachable image forming devices each configured to form a color image, an image carrying device configured to carry the color images sequentially overlaid into a single color image, an exchange detecting device configured to detect an exchange operation of the plurality of detachable image forming devices, a test pattern reading device configured to read a predetermined test pattern formed by the plurality of detachable image forming devices on the image carrying device, and a controller configured to instruct the plurality of detachable image forming devices to form the predetermined test pattern on the image carrying device when the exchange detecting device detects the exchange operation, and to perform a color image position adjustment based on readings of the predetermined test pattern by the test pattern reading device.
    Type: Application
    Filed: November 19, 2009
    Publication date: March 18, 2010
    Inventors: Tetsuo YAMANAKA, Kazuhiko KOBAYASHI, Tadashi SHINOHARA, Jun HOSOKAWA
  • Patent number: 7664407
    Abstract: A color image forming apparatus including a plurality of image forming devices, a transfer device including a transfer belt, a test pattern forming device configured to form, on the transfer belt, a test pattern including a plurality of marks formed by the image forming devices, an optical sensor configured to read the plurality of marks, and a checking device configured to determine whether reading by the optical sensor is performed correctly or not.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: February 16, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuo Yamanaka, Kazuhiko Kobayashi, Tadashi Shinohara, Jun Hosokawa
  • Publication number: 20090237695
    Abstract: A multicolor image forming apparatus includes an exposure unit to direct optical beams for optically writing different single-color images on image carriers, respectively, a pattern forming unit to form a positioning pattern on a transport member, a pattern detector to detect the positioning pattern, disposed above the transport member, a positional data detector disposed on a scanning line to detect positional data in a sub-scanning direction of the optical beams, an adjustment unit, and a storage unit. The adjustment unit detects positional deviations among the different single-color images based on detection results generated by both the pattern detector and the positional data detector, respectively, and then corrects the positional deviations. The storage unit stores as reference data the positional data in the sub-scanning direction of the optical beams detected when the positional deviations are corrected.
    Type: Application
    Filed: February 25, 2009
    Publication date: September 24, 2009
    Inventor: Tadashi SHINOHARA