Patents by Inventor Takahiro Seki

Takahiro Seki 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: 8600247
    Abstract: An image forming apparatus includes: an image carrier; a toner image forming unit that forms a toner image on the image carrier; a transfer unit that transfers the toner image on the image carrier to a transfer target having ridges and valleys on a surface thereof; an adjusting unit that adjusts a ratio of A/B, where A is a transfer ratio [%] from the image carrier to a valley portion of the transfer target while B is a transfer ratio [%] from the image carrier to a ridge portion of the transfer target, based on an adjustment input by a user; and a control unit that controls a transfer condition of the transfer unit based on the ratio of A/B adjusted by the adjusting unit.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: December 3, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Emiko Shiraishi, Yasuhiko Ogino, Reki Nakamura, Keigo Nakamura, Takahiro Seki
  • Patent number: 8168079
    Abstract: A molded oxygen absorbent composition and a process of producing the molded oxygen absorbent composition are disclosed. The molded oxygen absorbent composition is composed of a molded product of an oxygen absorbent composition which contains an oxygen absorbing substance, water or moisture, and a swelling component capable of being swelled with water or moisture. The product is formed by pressure molding the composition. The molded oxygen absorbent composition is reduced in its size and excellent in oxygen absorbing property.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: May 1, 2012
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Ken Sugimoto, Yoshinobu Miyabe, Masaharu Udagawa, Takahiro Seki
  • Publication number: 20110229168
    Abstract: An image forming apparatus includes: an image carrier; a toner image forming unit that forms a toner image on the image carrier; a transfer unit that transfers the toner image on the image carrier to a transfer target having ridges and valleys on a surface thereof; an adjusting unit that adjusts a ratio of A/B, where A is a transfer ratio [%] from the image carrier to a valley portion of the transfer target while B is a transfer ratio [%] from the image carrier to a ridge portion of the transfer target, based on an adjustment input by a user; and a control unit that controls a transfer condition of the transfer unit based on the ratio of A/B adjusted by the adjusting unit.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 22, 2011
    Inventors: Emiko SHIRAISHI, Yasuhiko Ogino, Reki Nakamura, Keigo Nakamura, Takahiro Seki
  • Patent number: 8017033
    Abstract: A molded oxygen absorbent composition is composed of a molded product of an oxygen absorbent composition which contains an oxygen absorbing substance, water or moisture, and a swelling component capable of being swelled with water or moisture. The molded oxygen absorbent composition is reduced in its size and excellent in oxygen absorbing property.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: September 13, 2011
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Ken Sugimoto, Yoshinobu Miyabe, Masaharu Udagawa, Takahiro Seki
  • Publication number: 20110172091
    Abstract: A molded oxygen absorbent composition and a process of producing the molded oxygen absorbent composition are disclosed. The molded oxygen absorbent composition is composed of a molded product of an oxygen absorbent composition which contains an oxygen absorbing substance, water or moisture, and a swelling component capable of being swelled with water or moisture. The product is formed by pressure molding the composition. The molded oxygen absorbent composition is reduced in its size and excellent in oxygen absorbing property.
    Type: Application
    Filed: March 25, 2011
    Publication date: July 14, 2011
    Inventors: Ken SUGIMOTO, Yoshinobu Miyabe, Masaharu Udagawa, Takahiro Seki
  • Patent number: 7947197
    Abstract: A deoxidant composition comprising 100 parts by weight of iron powder, 0.01 to 20 parts by weight of metal halide and 0.01 to 5 parts by weight of water repellent agent. The deoxidant composition even when used in a high-humidity atmosphere can maintain oxygen absorption potency. A deoxidant pack for high humidity obtained by wrapping the deoxidant composition without mixing of any inorganic filler by means of an air-permeable packaging material can reduce the apparent volume of deoxidant composition, so that the amount of packaging material used in the production of the deoxidant pack can be reduced.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: May 24, 2011
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takashi Nakata, Tatsuo Iwai, Takahiro Seki
  • Publication number: 20110058831
    Abstract: An apparatus includes: an image carrier; a charger to uniformly charge a surface of the image carrier; an exposing unit to perform write scanning on the image carrier; a developing unit that includes a developer carrier carrying a developer including a toner and that is configured to perform a visible image process on an electrostatic latent image formed on the image carrier; and a transferor to transfer a toner image that has been subjected to the process onto a material. If length Lg of a non-image part directly before an image part in an image carrier moving direction has the relation of Lg??·Ds/(Vs/Vp), where Vp and Vs are circumferential velocities of the image carrier and the developer carrier and Ds is a diameter of the developer carrier, suppression of toner attachment on the material is controlled in a predetermined length from an image front end in the direction.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 10, 2011
    Inventors: Motohiro USAMI, Takahiro Seki, Masashi Nagayama, Shinji Aoki, Jun Hitosugi
  • Publication number: 20090159846
    Abstract: A molded oxygen absorbent composition is composed of a molded product of an oxygen absorbent composition which contains an oxygen absorbing substance, water or moisture, and a swelling component capable of being swelled with water or moisture. The molded oxygen absorbent composition is reduced in its size and excellent in oxygen absorbing property.
    Type: Application
    Filed: October 18, 2006
    Publication date: June 25, 2009
    Inventors: Ken Sugimoto, Yoshinobu Miyabe, Masaharu Udagawa, Takahiro Seki
  • Publication number: 20090095941
    Abstract: A deoxidant composition comprising 100 parts by weight of iron powder, 0.01 to 20 parts by weight of metal halide and 0.01 to 5 parts by weight of water repellent agent. The deoxidant composition even when used in a high-humidity atmosphere can maintain oxygen absorption potency. A deoxidant pack for high humidity obtained by wrapping the deoxidant composition without mixing of any inorganic filler by means of an air-permeable packaging material can reduce the apparent volume of deoxidant composition, so that the amount of packaging material used in the production of the deoxidant pack can be reduced.
    Type: Application
    Filed: November 9, 2005
    Publication date: April 16, 2009
    Inventors: Takashi Nakata, Tatsuo Iwai, Takahiro Seki
  • Patent number: 7265590
    Abstract: A semiconductor apparatus for flexibly and effectively configuring a delay monitor circuit without an increase in circuit scale includes a delay signal generation circuit for switching the configuration of delay element arrays based on first configuration information and second configuration information and propagating a delay element array wherein a pulse is switched, a register group having a first register for the first configuration information and a second register for second configuration information, a selector for outputting to the delay signal generation circuit the first configuration information and second configuration information in accordance with an instruction of a selection signal in a time sharing way, and a control circuit for controlling a power source voltage based on delay information of a delay element array and outputting to the selector a selection signal to select from the first configuration information and second configuration information in a time sharing way.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: September 4, 2007
    Assignee: Sony Corporation
    Inventors: Takahiro Seki, Masakatsu Nakai, Tetsumasa Meguro
  • Publication number: 20060163534
    Abstract: The oxygen-absorbing composition of the invention comprises 100 parts by weight of a carrier and an easily oxidizable organic composition that is carried on the carrier in an amount exceeding 210 parts by weight. The carrier comprises a calcium silicate compound represented by the following formula: CaO.mSiO2.nH2O wherein m is a number from 1.6 to 6.5 and n is a positive number, and has crystal structures constituted by aggregates of curved plate crystals comprising gyrolite calcium silicate and amorphous silicon dioxide. Because of a high flowability, the oxygen-absorbing composition of the invention is excellent in the productivity of the oxygen-absorbing packages. In addition, because of a large oxygen absorption per unit volume, the oxygen-absorbing package can be made compact in its shape. The oxygen-absorbing package is not detected by a metal detector because the contamination with iron components as impurities can be prevented.
    Type: Application
    Filed: October 8, 2002
    Publication date: July 27, 2006
    Inventors: Ken Sugimoto, Tatsuo Iwai, Takahiro Seki
  • Publication number: 20060141164
    Abstract: An object is to provide a nanostructure having a two dimensionally spread homogenous nanostructure, and a method of manufacturing a nanostructure that can be performed by a low cost and simple process. Another object is to provide a nanostructure having a homogenous nanostructure in a large area, and a method of manufacturing a nanostructure that can be performed by a low cost and simple process. A monomolecular film is obtained by spreading a mixed solution containing an amphipathic block copolymer which has hydrophilic segments and hydrophobic segments, and a low molecular weight compound which is compatible with the hydrophobic segments, on the surface of water.
    Type: Application
    Filed: November 23, 2005
    Publication date: June 29, 2006
    Applicant: MITSUBISHI HEAVY INDUSTRIES LTD.
    Inventors: Yasuhiro Akita, Satoshi Shimma, Takahiro Seki, Shusaku Nagano
  • Patent number: 6924679
    Abstract: A power supply voltage control apparatus including an input signal generation circuit of wide uses or a small-sized monitor circuit of a novel configuration, and a semiconductor circuit and a method for driving the same, having a semiconductor circuit 11, an input signal generation circuit 12 able to change the phase difference i of a reference signal out?i and an input signal out?0 in accordance with a control signal Si when generating the two signals from a clock, a monitor circuit 13 having a characteristic between a power supply voltage and delay the same as that of a critical path of the semiconductor circuit 11, propagating the input signal out?0, and outputting a delayed signal out?0? to be delayed exactly by a time equivalent to a delay of the critical path (or smaller by a constant ratio), a delay detection circuit 14 for detecting a delay of the delayed signal out?0? relative to the reference signal out?i, and a power supply voltage control circuit 15 for controlling a power supply voltage VDD suppl
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: August 2, 2005
    Assignee: Sony Corporation
    Inventors: Katsunori Seno, Akihiko Hashiguchi, Tetsuo Kondo, Takahiro Seki
  • Publication number: 20050034599
    Abstract: In the present invention, an oxygen absorber agent composition comprises 100 parts by weight of iron powder and 0.1 parts by weight or more of a promoter comprising an alkali metal salt or alkali earth metal salt having low moisture-transportation properties. An oxygen absorber composition packaged device is prepared by packaging the oxygen absorber composition in gas permeable packaging material, and manifests oxygen absorption function for long periods of time under high humidity conditions and offers an oxygen absorber agent composition that prevent generation of rust, and using that oxygen absorber composition packaged device, oxygen in a gas barrier vessel is removed effectively even under conditions of high humidity. Preferable alkali metal salts or alkali earth metal salts have the characteristics that 5% aqueous solutions of the salts are in equilibrium with an atmosphere having a relative humidity of 99.0% or more at 25° C.
    Type: Application
    Filed: August 11, 2004
    Publication date: February 17, 2005
    Inventors: Takashi Nakata, Tatsuo Iwai, Takahiro Seki
  • Patent number: 6821594
    Abstract: The oxygen-absorbing label of the present invention has a laminated structure successively comprising a base layer having a release adhesive layer on its surface, an oxygen-absorbing sheet made from an oxygen-absorbing resin comprising a thermoplastic resin and an oxygen absorbent blended therein, and an air-permeable layer. The air-permeable layer is bonded to the base layer at a position surrounding an outer periphery of the oxygen-absorbing sheet. The air-permeable layer comprises (A) a water-resistant moisture-permeable resin film having a water pressure resistance of 2,000 mmH2O or higher and a moisture permeability of 1,000 g/m2/24 h or higher and (B) a microporous film.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: November 23, 2004
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Yuichi Watanabe, Takahiro Seki, Masaki Nagata
  • Publication number: 20040130372
    Abstract: A semiconductor apparatus for flexibly and effectively configuring a delay monitor circuit while suppressing an increase of the circuit scale to minimum, comprising a delay signal generation circuit for switching the configuration of delay element arrays based on first configuration information and second configuration information and propagating a delay element array wherein a pulse is switched, a register group having a first register to be set the first configuration information and a second register to be set second configuration information, a selector for outputting to the delay signal generation circuit the first configuration information and second configuration information in accordance with an instruction of a selection signal in a time sharing way, and a control circuit for controlling a power source voltage based on delay information of a delay element array and outputting to the selector a selection signal to select from the first configuration information and second configuration information in
    Type: Application
    Filed: November 14, 2003
    Publication date: July 8, 2004
    Inventors: Takahiro Seki, Masakatsu Nakai, Tetsumasa Meguro
  • Patent number: 6657467
    Abstract: The present invention provides a semiconductor device a comprising: a delayed-signal-generating circuit for delaying a reference pulse signal by a delay time caused by a delay component on a critical path of a target circuit by a selector included in the delayed signal generating circuit and, thereby, generating a delayed pulse signal; a detection-signal-generating circuit, having the same delay component as the selector, for generating a detection pulse signal delayed in phase by one cycle of a clock signal Ck with respect to the reference pulse signal; a delay-difference-detecting circuit for detecting a phase difference between the delayed pulse signal and the detection pulse signal; and a control circuit for adjusting the magnitude of a power-supply voltage VDD supplied to the target circuit according to the-phase difference detected by the delay-difference-detecting circuit.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: December 2, 2003
    Assignee: Sony Corporation
    Inventors: Takahiro Seki, Masakatsu Nakai
  • Publication number: 20030180519
    Abstract: The oxygen-absorbing multi-layered structure of the present invention comprises an oxygen-absorbing thermoplastic resin layer containing an oxygen-absorbing composition, and an oxygen-permeable thermoplastic resin layer formed on at least one surface of the oxygen-absorbing layer. The oxygen-permeable layer is a stretched film comprising (A) a matrix polyolefin resin, (B) incompatible thermoplastic resin particles dispersible in the matrix polyolefin resin (A), and (C) inorganic powder. The matrix polyolefin resin (A) has a melting point at least 50° C. lower than that of the incompatible thermoplastic resin particles (B). With this oxygen-absorbing layer, the oxygen-absorbing multi-layered structure is improved in oxygen permeability, and is inhibited from being deteriorated in oxygen-absorbing speed even when the film thickness thereof is increased to such an extent as to prevent the exposure of the oxygen-absorbing composition.
    Type: Application
    Filed: February 25, 2003
    Publication date: September 25, 2003
    Inventors: Takashi Kashiba, Masahiko Takashima, Takahiro Seki
  • Publication number: 20030175465
    Abstract: The oxygen-absorbing label of the present invention has a laminated structure successively comprising a base layer having a release adhesive layer on its surface, an oxygen-absorbing sheet made from an oxygen-absorbing resin comprising a thermoplastic resin and an oxygen absorbent blended therein, and an air-permeable layer. The air-permeable layer is bonded to the base layer at a position surrounding an outer periphery of the oxygen-absorbing sheet. The air-permeable layer comprises (A) a water-resistant moisture-permeable resin film having a water pressure resistance of 2,000 mmH2O or higher and a moisture permeability of 1,000 g/m2/24 h or higher and (B) a microporous film.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 18, 2003
    Inventors: Yuichi Watanabe, Takahiro Seki, Masaki Nagata
  • Publication number: 20030150241
    Abstract: The invention provides a production method for a PMF. Two or more bores at regular intervals are formed in a glass rod including a core and a clad so that the bores may be located on a concentric circle around a center axis of the glass rod. A stress applying member is inserted into the bore. The glass rod and the stress applying member may be heated before or after inserting. The glass rod with the stress applying is drawn without exposure to the atmosphere after heating in order to form an optical fiber.
    Type: Application
    Filed: January 21, 2003
    Publication date: August 14, 2003
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Tetsuya Haruna, Hideyuki Iziri, Motohide Yoshida, Takahiro Seki