Patents by Inventor Akihiko Nakazawa

Akihiko Nakazawa 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: 20200044218
    Abstract: A desired drying capability is achieved while damage to a film is prevented. A film production method is arranged such that: a production process including a drying step is operated by setting a drying condition, under which to carry out the drying step, for each of at least two periods, the two periods being a first period and a second period later than the first period; the drying condition is changed in at least a part of the first period so as to be enhanced with time; and the drying condition is maintained in the second period so as to be substantially fixed.
    Type: Application
    Filed: October 11, 2019
    Publication date: February 6, 2020
    Inventors: Akihiko SHIN, Yuji TAKAOKA, Atsushi NAKAZAWA, Hideyuki SASAKI
  • Publication number: 20200032713
    Abstract: A gas turbine combined cycle plant includes a fuel gas heater configured to heat fuel gas to be supplied to a combustor of a gas turbine using heated water heated by an exhaust heat recovery boiler; a return valve disposed on a heated water returning line to return heated water passing through the heater to the boiler; a dump valve disposed on a condensate line bifurcated from the heated water returning line between the return valve and the heater to return the heated water to a condenser; and a control unit configured to control operation of the return and dump valves. When load of the turbine falls below a lower limit, the control unit closes the return valve and keeps the opening degree of the dump valve at a specified degree to reduce a flow rate of the heated water flowing in the heater for a predetermined time.
    Type: Application
    Filed: April 4, 2018
    Publication date: January 30, 2020
    Inventors: Yuki NAKAZAWA, Akihiko SAITO, Hiroyuki NAKAGAWA, Ryo KOTO
  • Patent number: 10488928
    Abstract: A tactile sensation providing system includes an electronic device and a tactile sensation providing apparatus, which includes a wearable part worn on fingers, vibrating elements disposed at portions corresponding to the fingers, sensors that detect touches of the fingers onto a manipulation input surface, and a second controlling part able to communicate with a first controlling part. Upon receiving from the second controlling part a signal representing that a touch of one finger is detected by one sensor, the first controlling part obtains, based on data representing the finger and on coordinates detected by a detector, a type of the finger touching the surface and the coordinates where the finger touches the surface, and generates a driving signal representing a tactile sensation corresponding to the data representing the finger, the coordinates, and a displayed image. The second controlling part drives one of the vibrating elements using the driving signal.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: November 26, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Takashi Katsuki, Fumihiko Nakazawa, Osamu Toyoda, Akihiko Yabuki
  • Publication number: 20190331031
    Abstract: A control system controls a temperature of a fuel which is supplied to a combustor of a gas turbine via a fuel gas heater, which heats the fuel of the gas turbine, by adjusting a flow rate of heated water which is supplied to the fuel gas heater. The control system includes a water flow rate adjusting unit that adjusts the flow rate of the heated water which is supplied to the fuel gas heater based on a difference between a target temperature of the fuel and the temperature of the fuel on an outlet side of the fuel gas heater.
    Type: Application
    Filed: January 11, 2018
    Publication date: October 31, 2019
    Inventors: Yuki NAKAZAWA, Akihiko SAITO, Hiroyuki NAKAGAWA, Ryo KOTO
  • Patent number: 7979004
    Abstract: The electrophotographic belt of the present invention is characterized that, in the electrophotographic belt composed of the thermoplastic resin composition containing thermoplastic resin, with respect to a flake-shaped portion having an arc length of 5% of the inner peripheral length of the electrophotographic belt, when the thickness of the flake-shaped portion is measured at intervals of 1 mm in the peripheral direction, the difference between the maximum value and the minimum value of the measured value is 2% or more and 20% or less of an arithmetic average value.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: July 12, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Tanaka, Takashi Kusaba, Hidekazu Matsuda, Yuji Sakurai, Akihiko Nakazawa
  • Patent number: 7352984
    Abstract: An electrophotographic endless belt containing a polyamide resin, carbon black and a filler, characterized in that the polyamide resin is at least one resin selected from the group consisting of polyamide 610, polyamide 612, polyamide 11 and polyamide 12, the filler is at least one filler selected from the group consisting of an oxide, a hydroxide, a carbonate and a silicate, and weight (A) of the polyamide resin and total weight (B) of the carbon black and the filler is in a ratio (A:B) of from 90:10 to 50:50. Also disclosed are an electrophotographic apparatus having the electrophotographic endless belt, and a process for producing the electrophotographic endless belt.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: April 1, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidekazu Matsuda, Akihiko Nakazawa, Atsushi Tanaka, Takashi Kusaba, Yuji Sakurai
  • Patent number: 7208211
    Abstract: In an electrophotographic belt member comprising a resin composition, the resin composition contains from 30% by weight to 90% by weight of a thermoplastic resin, from 2% by weight to 30% by weight of a compound selected from the group consisting of a polyether-ester amide, a polyether ester and a polyether amide, from 0% by weight to 5% by weight of an electrolyte, and from 2% by weight to 50% by weight of an insulating filler. Also disclosed are a process for producing the electrophotographic belt member, and an electrophotographic apparatus having the electrophotographic belt member.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: April 24, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Tanaka, Akihiko Nakazawa, Tsunenori Ashibe, Takashi Kusaba, Hidekazu Matsuda
  • Patent number: 7201967
    Abstract: In an electrophotographic endless belt having a resin layer formed of a resin composition containing a polyamide, the resin composition further contains a copolymer obtained by copolymerization of an olefin and an oxygen-containing heterocyclic compound, a curve (T-log10 ? curve) showing the relationship between temperature T (° C.) and common logarithm log10 ? of melt viscosity ? (Pa·s), of the resin composition has, in the range of log10 ? of from log10 1,000 to log10 8,000, a gently inclined region the inclination ? log10 ?/?T of which is from ?0.02 to 0, and the gently inclined region has a temperature range of 10° C. or more, and the resin layer has a thickness the maximum thickness of which is 115% or less of the average value of the thickness of the resin layer and the minimum thickness of which is 85% or more of the average value of the thickness of the resin layer. Also disclosed is a process for producing the above electrophotographic endless belt.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: April 10, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuji Sakurai, Akihiko Nakazawa, Atsushi Tanaka, Hidekazu Matsuda, Takashi Kusaba
  • Publication number: 20070014943
    Abstract: A process is disclosed producing an intermediate transfer member used in an image-forming apparatus in which an image formed on a first image-bearing member is transferred to a second image-bearing member. The process has the steps of melt-extruding an extrusion material from a circular die by means of an extruder and thereafter making the same into a desired shape to obtain a cylindrical extruded product, and forming the resultant cylindrical extruded product into the intermediate transfer member. The cylindrical extruded product contains a thermoplastic resin and an ion-conductive resistance control agent, and a ratio of the diameter of the intermediate transfer member obtained to the die diameter of the circular die is from 0.5 to 4.0. Also disclosed are an intermediate transfer member obtained by the production process, and an intermediate transfer member having the intermediate transfer member.
    Type: Application
    Filed: September 19, 2006
    Publication date: January 18, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Minoru Shimojo, Hiroyuki Kobayashi, Akihiko Nakazawa, Akira Shimada, Atsushi Tanaka, Tsunenori Ashibe, Takashi Kusaba, Hidekazu Matsuda
  • Publication number: 20060226572
    Abstract: An electrophotographic endless belt is disclosed having a layer formed of a resin composition containing (i) at least one resin selected from the group consisting of a polyether ester amide, a polyolefin ether and a polyether amide; (ii) polyvinylidene fluoride; and (iii) carbon. In the resin composition, the ratio of the mass of the component (iii) to the mass of the component (i) is in a specific range.
    Type: Application
    Filed: December 23, 2005
    Publication date: October 12, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Atsushi Tanaka, Akihiko Nakazawa, Takashi Kusaba, Hidekazu Matsuda, Kenichi Yamauchi, Yuji Sakurai, Norifumi Muranaka
  • Publication number: 20060127617
    Abstract: The electrophotographic belt of the present invention is characterized that, in the electrophotographic belt composed of the thermoplastic resin composition containing thermoplastic resin, with respect to a flake-shaped portion having an arc length of 5% of the inner peripheral length of the electrophotographic belt, when the thickness of the flake-shaped portion is measured at intervals of 1 mm in the peripheral direction, the difference between the maximum value and the minimum value of the measured value is 2% or more and 20% or less of an arithmetic average value.
    Type: Application
    Filed: February 2, 2006
    Publication date: June 15, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Tanaka, Takashi Kusaba, Hidekazu Matsuda, Yuji Sakurai, Akihiko Nakazawa
  • Publication number: 20060067747
    Abstract: An electrophotographic endless belt which contains a polyamide resin and an additive A comprising at least one selected from the group consisting of copper(I) iodide, potassium iodide, copper(I) chloride and potassium chloride, and has a volume resistivity of from 1×106 to 1×1014 ?cm. Also disclosed are a process for producing the electrophotographic endless belt and an electrophotographic apparatus having the electrophotographic endless belt.
    Type: Application
    Filed: September 15, 2005
    Publication date: March 30, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hidekazu Matsuda, Akihiko Nakazawa, Atsushi Tanaka, Takashi Kusaba, Yuji Sakurai
  • Patent number: 6928256
    Abstract: An electrophotographic endless belt has a beltlike substrate and a meandering-preventive member attached to the inner peripheral surface of the beltlike substrate via a pressure-sensitive adhesive, double-coated tape. The pressure-sensitive adhesive, double-coated tape is a pressure-sensitive adhesive, double-coated tape having i) a reinforcing base material and ii) pressure-sensitive adhesive layers on both sides of the reinforcing base material. The reinforcing base material has a thickness of from 25 ?m or more to 200 ?m or less, and the pressure-sensitive adhesive layers on both sides each have a thickness of 200 ?m or less and at least one of the pressure-sensitive adhesive layers has a thickness of from more than 100 ?m to 200 ?m or less, and the meandering-preventive member has a hardness of from 15° or more to 70° or less. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic endless belt as an intermediate transfer belt.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: August 9, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidekazu Matsuda, Akihiko Nakazawa, Atsushi Tanaka, Tsunenori Ashibe, Takashi Kusaba
  • Publication number: 20050142368
    Abstract: In an electrophotographic endless belt having a resin layer formed of a resin composition containing a polyamide, the resin composition further contains a copolymer obtained by copolymerization of an olefin and an oxygen-containing heterocyclic compound, a curve (T?log10? curve) showing the relationship between temperature T (° C.) and common logarithm log10? of melt viscosity ? (Pa·s), of the resin composition has, in the range of log10? of from log10 1,000 to log10 8,000, a gently inclined region the inclination ?log10?/?T of which is from ?0.02 to 0, and the gently inclined region has a temperature range of 10° C. or more, and the resin layer has a thickness the maximum thickness of which is 115% or less of the average value of the thickness of the resin layer and the minimum thickness of which is 85% or more of the average value of the thickness of the resin layer. Also disclosed is a process for producing the above electrophotographic endless belt.
    Type: Application
    Filed: November 24, 2004
    Publication date: June 30, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuji Sakurai, Akihiko Nakazawa, Atsushi Tanaka, Hidekazu Matsuda, Takashi Kusaba
  • Publication number: 20050118522
    Abstract: An electrophotographic endless belt containing a polyamide resin, carbon black and a filler, characterized in that the polyamide resin is at least one resin selected from the group consisting of polyamide 610, polyamide 612, polyamide 11 and polyamide 12, the filler is at least one filler selected from the group consisting of an oxide, a hydroxide, a carbonate and a silicate, and weight (A) of the polyamide resin and total weight (B) of the carbon black and the filler is in a ratio (A:B) of from 90:10 to 50:50. Also disclosed are an electrophotographic apparatus having the electrophotographic endless belt, and a process for producing the electrophotographic endless belt.
    Type: Application
    Filed: November 12, 2004
    Publication date: June 2, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hidekazu Matsuda, Akihiko Nakazawa, Atsushi Tanaka, Takashi Kusaba, Yuji Sakurai
  • Patent number: 6852400
    Abstract: An endless belt for electrophotography is disclosed which is obtainable continuously by melt extrusion from a circular die. The endless belt has a layer containing a thermoplastic resin having a diphenyl sulfone structure represented by the following Formula (1) Also disclosed are a process for producing the endless belt and an image forming apparatus having the endless belt.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: February 8, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiko Nakazawa, Hiroyuki Kobayashi, Minoru Shimojo, Akira Shimada, Atsushi Tanaka, Tsunenori Ashibe, Takashi Kusaba, Hidekazu Matsuda
  • Patent number: 6853824
    Abstract: In an electrophotographic endless belt having a beltlike substrate, a meandering-preventive member and a position detection member, the meandering-preventive member is disposed on the inner-periphery side of one end portion of the beltlike substrate, the position detection member is disposed on the outer-periphery side of the other end portion of the beltlike substrate, and the meandering-preventive member and the position detection member are 200 mm to 250 mm away from each other in the width direction of the electrophotographic endless belt. The beltlike substrate contains a thermoplastic resin as a binder resin, and the beltlike substrate has a 25 ?m×25 ?m surface total current value of from 300 nA to 2,000 nA at the time of application of 100 V as measured by SPM.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: February 8, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryota Kashiwabara, Hiroyuki Kobayashi, Akihiko Nakazawa, Atsushi Tanaka, Tsunenori Ashibe, Takashi Kusaba, Hidekazu Matsuda, Yuji Sakurai
  • Patent number: 6795667
    Abstract: A process cartridge which is detachably mountable to a main body of an electrophotographic apparatus, includes an electrophotographic photosensitive member to carry a toner image; an intermediate transfer belt having a contact part with the photosensitive member, and a primary transfer unit to primarily transfer the toner image at the contact part from the photosensitive member to the intermediate transfer belt, being integrally supported in one body. After the contact part is formed by the photosensitive member and the intermediate transfer belt is brought into contact with under a linear pressure of 0.5 N/cm and is left for 10 hours in an environment of 45° C.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: September 21, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiko Nakazawa, Hiroyuki Kobayashi, Atsushi Tanaka, Tsunenori Ashibe, Takashi Kusaba, Hidekazu Matsuda, Yuji Sakurai
  • Patent number: 6775494
    Abstract: A process cartridge integrally supports therein a cylindrical latent-image-bearing member on which a toner image is formed and an intermediate transfer belt to which the toner image is primarily transferred and from which it is secondarily transported to a transfer medium.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: August 10, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Kusaba, Hiroyuki Kobayashi, Akihiko Nakazawa, Atsushi Tanaka, Tsunenori Ashibe, Hidekazu Matsuda
  • Patent number: 6766127
    Abstract: A process cartridge detachably mountable on the main body of an electrophotographic apparatus, integrally supports a photosensitive drum for bearing toner images, and an intermediate transferring belt having a contact part with the photosensitive drum. The moisture amount of the intermediate transferring belt at 23° C./50% RH is less than 1% by weight and the sum of the surface roughness Ra of the photosensitive drum and the surface roughness Ra of the intermediate transferring belt is less than 0.8 &mgr;m. The present invention also provides an electrophotographic apparatus having the process cartridge and an image forming method using the electrophotographic apparatus.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: July 20, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Tanaka, Hiroyuki Kobayashi, Akihiko Nakazawa, Tsunenori Ashibe, Takashi Kusaba, Hidekazu Matsuda, Yuji Sakurai