Patents by Inventor Shinya Nakayama

Shinya Nakayama 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: 20160223926
    Abstract: Provided is a resin for a toner, which is a copolymer including a crystalline segment, and having a maximum elastic stress value at 100° C. (ES-100) of 1,000 Pa or less, and a maximum elastic stress value at 70° C. (ES70) of 1,000 Pa or greater when the temperature is lowered from 100° C. to 70° C., where the maximum elastic stress values are measured according to a large amplitude oscillatory shear procedure.
    Type: Application
    Filed: August 13, 2014
    Publication date: August 4, 2016
    Inventors: Azumi MIYAAKE, Daisuke ASAHINA, Toyoshi SAWADA, Hiroshi YAMASHITA, Tsuyoshi SUGIMOTO, Shinya NAKAYAMA, Susumu CHIBA, Satoyuki SEKIGUCHI
  • Patent number: 9400439
    Abstract: A toner including a crystalline resin wherein the crystalline resin contains a crystalline resin having a urethane bond, a urea bond or both thereof, and wherein the crystalline resin has an average crystallite diameter of 20 nm to 70 nm.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: July 26, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Kousuke Nagata, Masahide Yamada, Shinya Nakayama, Akiyoshi Sabu, Tatsuya Morita, Takamasa Hase, Suzuka Amemori, Rintaro Takahashi
  • Publication number: 20160209766
    Abstract: A toner, including: a polyester resin, wherein the polyester resin includes a diol component and a crosslink component as constituent components thereof, wherein the diol component contains an aliphatic diol having 3 to 10 carbon atoms in an amount of 50 mol % or more, wherein the crosslink component contains a trihydric or higher aliphatic alcohol, and wherein the toner has a glass transition temperature (Tg1st) of 20° C. to 50° C., where the glass transition temperature (Tg1st) is measured in first heating in differential scanning calorimetry (DSC) of the toner.
    Type: Application
    Filed: August 13, 2014
    Publication date: July 21, 2016
    Inventors: Susumu CHIBA, Tsuyoshi SUGIMOTO, Shinya NAKAYAMA, Kohsuke NAGATA, Shinsuke NAGAI, Daisuke ASAHINA
  • Publication number: 20160209767
    Abstract: A toner, including: a colorant; a binder resin; and a releasing agent, wherein the binder resin includes a polyester resin, and the toner satisfies requirements (1) and (2) below: (1): G?(50)?3.0×107 Pa and 1.0×105 Pa?G?(60)?1.0×107 Pa, where G?(50) is a storage modulus at 50° C. of the toner and G?(60) is a storage modulus at 60° C. of the toner; and (2): a spin-spin relaxation time of the toner at 50° C. measured by solid echo method of pulse NMR is 1.0 ms or shorter.
    Type: Application
    Filed: August 13, 2014
    Publication date: July 21, 2016
    Inventors: Kohsuke NAGATA, Shinya NAKAYAMA, Tsuyoshi SUGIMOTO, Daisuke ASAHINA, Susumu CHIBA
  • Publication number: 20160164236
    Abstract: According to one embodiment, a rotor of a rotating electric machine includes a collector shaft which is fastened to a main shaft of the machine and mounted with paired collector rings on an outer circumferential surface thereof. Longitudinal lead bars extend in electrically insulated state in longitudinal lead grooves provided in an outer circumferential surface of the collector shaft and are connected to ring through studs. Radial lead bars are located at a collector shaft-side end portion of the main shaft and connect at their inner end portions to the bands. And, both ends of conductive longitudinal studs inserted into longitudinal through holes at a main shaft-side end portion of the collector shaft are connected to outer end portions of the radial lead bars and to the longitudinal lead bars.
    Type: Application
    Filed: December 3, 2015
    Publication date: June 9, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinya Nakayama, Daijiro Fukuda, Yoshihiro Nomoto, Hideyuki Nakamura
  • Publication number: 20160091812
    Abstract: A toner includes a binder resin including a copolymer resin containing structural units derived from crystalline and non-crystalline resins, respectively. Spin-spin relaxation time (t50) of the toner at 50° C. measured by pulse NMR is ?0.05 msec., spin-spin relaxation time (t130) at 130° C. when warmed from 50° C. to 130° C. is >15 msec., and spin-spin relaxation time (t?70) at 70° C. when cooled from 130° C. to 70° C. is ?1.00 msec. A binarized image obtained by binarizing a phase image of the toner observed by a tapping mode AFM based on intermediate value between maximum and minimum phase difference values in the phase image includes first phase difference images constituted by large phase-difference portions and a second phase difference image constituted by a small phase-difference portion. The first phase difference images are dispersed in the second phase difference image. The dispersion diameter of the first phase difference images is 150 nm or less.
    Type: Application
    Filed: November 27, 2013
    Publication date: March 31, 2016
    Inventors: Keiji MAKABE, Tsuyoshi SUGIMOTO, Akinori SAITO, Suzuka AMEMORI, Toyoshi SAWADA, Hiroshi YAMASHITA, Shinya NAKAYAMA, Atsushi YAMAMOTO, Daisuke ASAHINA, Satoyuki SEKIGUCHI
  • Publication number: 20160011181
    Abstract: Provided is a method for the simple and highly accurate assay of PSA by a one-step reaction that does not use carriers having different average grain sizes. Also provided is a reagent therefor. The PSA assay method comprises sensitizing insoluble carriers having the same average grain size within a range of greater than 0.20 nm but 0.40 nm or less using two types of anti-PSA monoclonal antibodies having different epitopes that are anti-PSA monoclonal antibodies that will react with both free PSA and PSA-ACT, which is a complex of free PSA and ?1-antichymotrypsin, and bringing the carriers into contact with a sample in the presence of an aggregation promoter.
    Type: Application
    Filed: September 25, 2015
    Publication date: January 14, 2016
    Applicant: SEKISUI MEDICAL CO., LTD.
    Inventors: Yuki TAKAHASHI, Tomo SHIMIZU, Yasushi NAKAMURA, Shinya NAKAYAMA, Shinichiro KITAHARA
  • Publication number: 20150345466
    Abstract: A wind power generation system has a windmill, a lift improvement device, a power generator, a storage, and a controller. The windmill rotates when receiving an airflow. The lift improvement device has a capability of operating and halting, the lift improvement device increases a lift force to a blade of the windmill when operating. The power generator generates power by rotation of the windmill and a torque is generated in a direction suppressing rotation of the windmill. The storage stores a plurality of characteristic maps indicating characteristics of the torques of the power generator in relation to rotation speeds of the power generator. The controller controls a power generation amount of the power generator by switching and using the plurality of characteristic maps of the storage in correspondence with a state of operating or halting of the lift improvement device.
    Type: Application
    Filed: May 14, 2015
    Publication date: December 3, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Motofumi TANAKA, Naohiko SHIMURA, Toshiki OSAKO, Toshimasa YAMADA, Hisashi MATSUDA, Yuuta ONISHI, Shinya NAKAYAMA
  • Publication number: 20150323878
    Abstract: A toner, wherein an amount of Al detected in the toner is 0.7% to 1.3%, where the amount of Al detected is determined based on quantitative analysis of Al by X-ray photoelectron spectroscopic analysis (XPS), and wherein [Tg2nd (THF insoluble matter)] is ?40° C. to 30° C., where the [Tg2nd (THF insoluble matter)] is a glass transition temperature measured in second heating of differential scanning calorimetry (DSC) of THF insoluble matter of the toner.
    Type: Application
    Filed: April 27, 2015
    Publication date: November 12, 2015
    Inventors: Akihiro TAKEYAMA, Shinya NAKAYAMA, Akinori SAITOH, Shinsuke NAGAI, Hiroyuki TAKEDA
  • Patent number: 9176406
    Abstract: Toner contains a binder resin containing a crystalline resin having a urethane and/or urea bonding; and a colorant, wherein in a diffraction spectrum of the toner as measured by an X-ray diffraction instrument, a ratio {C/(C+A)} of an integral intensity C of the spectrum derived from the crystalline structure to an integral intensity A of the spectrum derived from the non-crystalline structure is 0.12 or greater, wherein the toner satisfies the following relation 1: T1?T2?30° C. (Relation 1), where T1 represents the maximum endothermic peak in the first temperature rising from 0° C. to 100° C. at the temperature rising rate of 10° C./min and T2 represents the maximum exothermic peak in the first temperature falling from 100° C. to 0° C. at the temperature falling rate of 10° C./min as T1 and T2 are measured by diffraction scanning calorimetry (DSC).
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: November 3, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoyuki Sekiguchi, Hiroshi Yamashita, Minoru Masuda, Susumu Chiba, Tatsuya Morita, Atsushi Yamamoto, Shinya Nakayama, Masahide Yamada, Kohsuke Nagata, Keiji Makabe, Toyoshi Sawada
  • Patent number: 9170511
    Abstract: Toner contains a binder resin containing one or more kinds of crystalline resin and one or more kinds of non-crystalline resin. The non-crystalline resin located at the surface portion of the toner forms a shell structure of a continuous phase of the non-crystalline resin and the toner has an amount of melting heat of 30 J/g or more in a second temperature rising as measured by differential scanning calorimetry (DSC).
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: October 27, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuru Moritani, Yoshihiro Moriya, Hiroshi Yamada, Ryota Inoue, Shinya Nakayama, Atsushi Yamamoto
  • Publication number: 20150261113
    Abstract: A toner, wherein the toner satisfies a ratio XPS (%)/CIC (ppm) of 1.40×10?2 or less, where CIC (ppm) denotes a fluorine content ratio (ppm) determined by combustion ion chromatography and XPS (%) denotes a fluorine content ratio (%) determined by X-ray photoelectron spectroscopic analysis.
    Type: Application
    Filed: February 24, 2015
    Publication date: September 17, 2015
    Inventors: Akihiro Takeyama, Shinya Nakayama, Hiroshi Yamada, Minoru Masuda, Akinori Saito, Hideyuki Santo, Ryuta Chiba, Hiroyuki Takeda
  • Patent number: 9134638
    Abstract: A toner including at least a crystalline resin as a binder resin, wherein a tetrahydrofuran soluble content of the toner includes 5.0% or more as a peak area of a component having a molecular weight of 100,000 or greater in a molecular weight distribution measured by gel permeation chromatography, and the tetrahydrofuran soluble content of the toner has a weight-average molecular weight of 20,000 to 60,000.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: September 15, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Shingo Sakashita, Shinya Nakayama, Masahide Yamada, Atsushi Yamamoto, Hideyuki Santo, Yukiko Nakajima, Suzuka Amemori
  • Publication number: 20150253687
    Abstract: A magenta toner for electrophotography, including: a polyester resin; and a colorant containing a naphthol-based pigment, wherein the magenta toner for electrophotography satisfies requirements <1> and <2> below: <1> [G?(100)(THF insoluble matter)] is 1.0×105 Pa to 1.0×107 Pa, and a ratio of [G?(40)(THF insoluble matter)] to the [G?(100)(THF insoluble matter)] is 3.5×10 or less, where the [G?(100)(THF insoluble matter)] is a storage modulus at 100° C. of THF insoluble matter of the toner and the [G?(40)(THF insoluble matter)] is a storage modulus at 40° C. of the THF insoluble matter of the toner; and <2> an X-ray diffraction pattern of the naphthol-based pigment in a crystalline state has a plurality of peaks in a range of 0°?2??35°, and a sum of half value widths of the peaks is 5° to 10°.
    Type: Application
    Filed: February 25, 2015
    Publication date: September 10, 2015
    Inventors: Ryuta Chiba, Shinya Nakayama, Tsuyoshi Sugimoto, Hiroshi Yamada, Susumu Chiba, Shinsuke Nagai, Hiroshi Yamashita, Masana Shiba
  • Patent number: 9127118
    Abstract: A resin for toner contains a polyhydroxycarboxylic acid skeleton and a rigid skeleton.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: September 8, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hideyuki Santo, Shinya Nakayama, Atsushi Yamamoto, Yoshihiro Moriya, Akiyoshi Sabu, Daisuke Asahina, Yoshitaka Yamauchi, Taichi Nemoto, Yukiko Nakajima, Daiki Yamashita, Masahide Yamada, Keiji Makabe
  • Publication number: 20150248073
    Abstract: Provided is a toner containing a binder resin. The binder resin contains a crystalline resin. The toner has a maximum endothermic peak temperature (P1) of from 50° C. to 80° C. and a total endothermic amount (Q) of from 35 J/g to 90 J/g at a first temperature elevation of differential scanning calorimetry. A ratio (Qp/Q) of a total endothermic amount (Qp) of the toner in a temperature range of from 20° C. to the maximum endothermic peak temperature (P1) to the total endothermic amount (Q) of the toner is from 0.65 to 0.83.
    Type: Application
    Filed: October 11, 2013
    Publication date: September 3, 2015
    Inventors: Shinya Nakayama, Atsushi Yamamoto, Minoru Masuda, Susumu Chiba, Toyoshi Sawada, Hiroshi Yamashita
  • Publication number: 20150248070
    Abstract: A toner, including: base particles containing a polyester resin, a colorant, and a release agent, wherein the toner has a glass transition temperature (Tg1st) of 20° C. to 50° C. where the glass transition temperature (Tg1st) is measured in first heating of differential scanning calorimetry (DSC) of the toner, wherein tetrahydrofuran (THF) insoluble matter of the toner has a glass transition temperature [Tg2nd (THF insoluble matter)] of 30° C. or lower where the glass transition temperature [Tg2nd (THF insoluble to matter)] is measured in second heating of differential scanning calorimetry (DSC) of the THF insoluble matter, and wherein 50% or less of the colorant is present within a region of 1,000 nm from a surface of each of the base particles toward a center thereof.
    Type: Application
    Filed: February 24, 2015
    Publication date: September 3, 2015
    Inventors: Ryuta CHIBA, Shinya Nakayama, Hiroshi Yamada, Minoru Masuda, Akinori Saitoh, Hideyuki Santo, Shinsuke Nagai, Akihiro Takeyama, Hiroyuki Takeda, Tsuyoshi Sugimoto, Suzuka Amemori, Kohsuke Nagata
  • Publication number: 20150234304
    Abstract: A toner including a crystalline resin wherein the crystalline resin contains a crystalline resin having a urethane bond, a urea bond or both thereof, and wherein the crystalline resin has an average crystallite diameter of 20 nm to 70 nm.
    Type: Application
    Filed: September 10, 2013
    Publication date: August 20, 2015
    Inventors: Kousuke Nagata, Masahide Yamada, Shinya Nakayama, Akiyoshi Sabu, Tatsuya Morita, Takamasa Hase, Suzuka Amemori, Rintaro Takahashi
  • Publication number: 20150227066
    Abstract: A toner of the present invention includes at least a colorant and a resin, has crystallinity CX or 20 or greater, and has a dynamic viscoelasticity characteristic in which a logarithmic value Log G?(50) of storage elastic modulus (Pa) at 50° C. is from 6.5 to 8.0 and a logarithmic value Log G?(65) of storage elastic modulus (Pa) at 65° C. is from 4.5 to 6.0, when the dynamic viscoelasticity characteristic is measured by temperature sweep from 40° C., at a frequency of 1 Hz, at a strain amount control of 0.1%, and at a temperature elevating rate of 2° C./min.
    Type: Application
    Filed: August 30, 2013
    Publication date: August 13, 2015
    Inventors: Hideki Sugiura, Shinya Nakayama, Toyoshi Sawada
  • Publication number: 20150227071
    Abstract: A toner including at least a crystalline resin as a binder resin, wherein a tetrahydrofuran soluble content of the toner includes 5.0% or more as a peak area of a component having a molecular weight of 100,000 or greater in a molecular weight distribution measured by gel permeation chromatography, and the tetrahydrofuran soluble content of the toner has a weight-average molecular weight of 20,000 to 60,000.
    Type: Application
    Filed: April 23, 2015
    Publication date: August 13, 2015
    Inventors: Shingo SAKASHITA, Shinya NAKAYAMA, Masahide YAMADA, Atsushi YAMAMOTO, Hideyuki SANTO, Yukiko NAKAJIMA, Suzuka AMEMORI