Patents by Inventor Takeshi Kawamura

Takeshi Kawamura 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: 7415230
    Abstract: A developing apparatus includes a developer carrying member, disposed opposite to an image bearing member, for carrying developer which is caused to jump from the developer carrying member to the image bearing member to develop an electrostatic latent image formed on said image bearing member by creating an oscillation electric field between the image bearing member and the developer carrying member at an opposing portion where the image bearing member and the developer carrying member are opposed to each other; and a jumping developer regulation member for regulating an area in which the developer is caused to jump in the opposing portion. The jumping developer regulation member is disposed apart from the developer carried by the developer carrying member and is an insulating member or an electrically floating member.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: August 19, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Kawamura, Ken Nakagawa
  • Patent number: 7362947
    Abstract: A variety of special effect processing is performed on video frames retrieved from a disk device 30 in effect processing stages ES1, ES2, and so on. A work memory 112B is always interposed between processing at one stage and processing at the next stage. Further, a plurality of processing are performed in parallel at one effect processing stage. Frames having all of effect processing completed are stored in an input/output buffer 115 in no special order through layering processing ESL. The plurality of edited frames stored in the input/output buffer 115 are output in synchronization with an output clock (not shown) in realtime.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: April 22, 2008
    Assignee: Sony Corporation
    Inventors: Hiroaki Adachi, Katsuakira Moriwake, Takeshi Kawamura
  • Publication number: 20080033128
    Abstract: [Object] A method wherein the separability between a polyether phase and a water phase is improved when a water-soluble compound is extracted and removed from a polyether containing the water-soluble compound with water is provided. [Solving Means] The object is achieved by a method for producing a polyether including a step of extracting and removing a water-soluble compound from a polyether containing the water-soluble compound with water, wherein the step includes at least an operation of separating a water phase from a polyether phase at a temperature of 50° C. or higher.
    Type: Application
    Filed: July 8, 2005
    Publication date: February 7, 2008
    Applicant: Kaneka Corporation
    Inventor: Takeshi Kawamura
  • Patent number: 7304192
    Abstract: The present invention relates to a simple method for efficiently producing aromatic-substituted chlorinated hydrocarbons, for example, high-purity cumyl chloride (1,4-bis(1-chloro-1-methylethyl)benzene, p-DCC) that can be used as an initiator for cationic polymerization. A corresponding tertiary alcohol such as 1,4-bis(1-hydroxy-1-methylethyl)benzene is mixed with aqueous hydrochloric acid and subjected to stirring, and then the resulting organic layer is brought into contact with a hydrogen chloride gas to produce high-quality aromatic-substituted chlorinated hydrocarbon in high yield. Furthermore, in order to purify a mixture containing a chlorinated hydrocarbon compound, the mixture being produced by reaction between an aqueous solution of a metal hypochiorite and a protonic acid, the mixture is allowed to react with an aqueous alkaline solution to form an alcohol compound. Then, a solid is isolated by solid-liquid separation and chlorinated again with the aqueous hydrochloric acid.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: December 4, 2007
    Assignee: Kaneka Corporation
    Inventors: Takeshi Kawamura, Chiho Yoshimi, Hidetoshi Odaka
  • Patent number: 7254350
    Abstract: An image forming apparatus includes an image bearing member; a developer carrying member, disposed opposed to the image bearing member, for carrying a developer, wherein an electric field is formed between the developer carrying member and the image bearing member during a developing operation using the developer carrying member, and the electric field including an oscillating portion in which the electric field is an oscillating electric field, wherein a supply electric field of the oscillating electric field which is effective to supply the developer to the image bearing member from the developer carrying member is variably controllable in accordance with a peripheral speed of the image bearing member.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: August 7, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Kawamura, Jun Suzuki, Bunro Noguchi, Masahiro Shibata
  • Publication number: 20070104587
    Abstract: The present invention relates to an evacuation apparatus for evacuating a vacuum chamber of a substrate processing apparatus for processing a substrate such as a semiconductor wafer or liquid crystal panel. An evacuation apparatus according to the present invention includes a first vacuum pump connected to a vacuum chamber, and a second vacuum pump connected to the first vacuum pump. The first vacuum pump has a pair of multistage pump rotors.
    Type: Application
    Filed: October 14, 2004
    Publication date: May 10, 2007
    Inventors: Takeshi Kawamura, Koichi Kagawa
  • Publication number: 20060198735
    Abstract: The present invention relates-to-a-vacuum pump and a method of starting a vacuum pump. The vacuum pump includes a pump rotor (1) rotatably disposed in a casing (2), and a pump-rotor controller (15) for controlling rotation of the pump rotor (1) in a forward direction or a reverse direction in accordance with a predetermined pattern at the time of starting the vacuum pump.
    Type: Application
    Filed: August 11, 2003
    Publication date: September 7, 2006
    Inventors: Naoki Iijima, Jiro Watanbe, Hiroyuki Chino, Kiyoshi Yanagisawa, Takeshi Kawamura
  • Publication number: 20060168521
    Abstract: Conventional editing devices cannot obtain an editing result immediately. A process is performed on only necessary parts out of edit material based on a list and only a result of the process of the necessary parts is registered in an external device as an editing result. Therefore, an editing result can be registered in the external device faster than a case of registering an editing result of all ranges based on a list, thus making it possible to realize an editing device and method capable of obtaining an editing result immediately.
    Type: Application
    Filed: June 10, 2004
    Publication date: July 27, 2006
    Inventors: Fumio Shimizu, Nobuo Nakamuara, Hideaki Miyauchi, Takeshi Kawamura
  • Publication number: 20060091916
    Abstract: The image forming apparatus with the high voltage power supply apparatus which includes an AC high voltage power supply and a DC high voltage power supply and which outputs at an output end a voltage of an output voltage of the AC high voltage power supply superposed on an output voltage of the DC high voltage power supply, the high voltage power supply apparatus comprises a positive peak detection circuit and a negative peak detection circuit, and is arranged to control the output voltage of the AC high voltage power supply and the DC high voltage power supply, on the basis of the detection result of the positive peak detection circuit and the negative peak detection circuit.
    Type: Application
    Filed: October 13, 2005
    Publication date: May 4, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takehiro Uchiyama, Takeshi Kawamura, Tomohiro Nakamori
  • Patent number: 7031629
    Abstract: An image forming apparatus includes an image bearing member; a charging member for electrically charging the image bearing member; developing means for developing with a developer an electrostatic latent image formed on the image bearing member, the developing means having a developer carrying member for carrying the developer, wherein a gap is formed between the developer carrying member and the image bearing member; bias voltage applying means for applying a bias voltage to the developer carrying member, wherein the bias applying means applies an AC bias when the electrostatic latent image is developed, wherein the developing means is capable of collecting the developer fro the image bearing member, and an amplitude of an AC bias voltage applied to the developer carrying member by the bias applying means when the the developer is collected, is larger than that when the the electrostatic latent image is developed.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: April 18, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Kawamura, Koichi Otaka, Yasushi Shimizu, Yasunori Chigono, Ken Nakagawa, Hikaru Osada
  • Publication number: 20050276623
    Abstract: An image forming apparatus having a developer carrying member for developing an electrostatic image formed on an image bearing member with a developer, and a flight developer carrying member provided between the image bearing member and the developer carrying member for regulating an area in which the developer flies from the developer carrying member to the image bearing member, wherein a voltage applied to the developer carrying member is controlled in accordance with information regarding the front edge location of the flight developer regulating member.
    Type: Application
    Filed: June 9, 2005
    Publication date: December 15, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Jun Suzuki, Masahiro Shibata, Takeshi Kawamura, Bunro Noguchi
  • Patent number: 6965743
    Abstract: A developer apparatus includes a developer carrying member, for carrying a developer to a developing portion, the developer carrying member including an electroconductive base and a resistance layer provided thereon; a developer feeding member for being supplied with a voltage to supply the developer to the developer carrying member; wherein a surface moving speed of the developer carrying member Vp [mm/sec], a resistance R1 (?) of the developer carrying member when an electric current applied the developer carrying member is 0.04 Vp [?A], and a resistance R2 (?) or the developer carrying member when the electric current applied to the developer carrying member is 4 Vp [?A], satisfy: r1/R2<15.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: November 15, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ken Nakagawa, Junichi Ochi, Takeshi Kawamura
  • Publication number: 20050250968
    Abstract: The present invention relates to a simple method for efficiently producing aromatic-substituted chlorinated hydrocarbons, for example, high-purity cumyl chloride (1,4-bis(2-chloro-2-propyl)benzene, p-DCC) that can be used as an initiator for cationic polymerization. A corresponding tertiary alcohol such as 1,4-bis(2-hydroxy-2-propyl)benzene is mixed with aqueous hydrochloric acid and subjected to stirring, and then the resulting organic layer is brought into contact with a hydrogen chloride gas to produce high-quality aromatic-substituted chlorinated hydrocarbon in high yield. Furthermore, in order to purify a mixture containing a chlorinated hydrocarbon compound, the mixture being produced by reaction between an aqueous solution of a metal hypochlorite and a protonic acid, the mixture is allowed to react with an aqueous alkaline solution to form an alcohol compound. Then, a solid is isolated by solid-liquid separation and chlorinated again with the aqueous hydrochloric acid.
    Type: Application
    Filed: July 2, 2003
    Publication date: November 10, 2005
    Inventors: Takeshi Kawamura, Chiho Yoshimi, Hidetoshi Odaka
  • Publication number: 20050191073
    Abstract: An image forming apparatus includes an image bearing member; a developer carrying member, disposed opposed to the image bearing member, for carrying a developer, wherein an electric field is formed between the developer carrying member and the image bearing member during a developing operation using the developer carrying member, and the electric field including an oscillating portion in which the electric field is an oscillating electric field, wherein a supply electric field of the oscillating electric field which is effective to supply the developer to the image bearing member from the developer carrying member is variably controllable in accordance with a peripheral speed of the image bearing member.
    Type: Application
    Filed: February 18, 2005
    Publication date: September 1, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Takeshi Kawamura, Jun Suzuki, Bunro Noguchi, Masahiro Shibata
  • Patent number: 6898393
    Abstract: The image forming apparatus includes a movable image bearing member, a charging member opposed to the image bearing member in a charging portion, a transfer member for transferring an image formed on the image bearing member to a transferred member, and a cleaning mode for applying a voltage to the transfer member, and when other area on the image bearing member differing from a surface potential changing area on the image bearing member which is changed in surface potential by the application of this voltage is located in the charging portion, applying a voltage to the charging member, thereby cleaning the transfer member and the charging member. Thereby, the cleaning of the charging member can be effected well.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: May 24, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeshi Kawamura
  • Publication number: 20050058430
    Abstract: This invention proposes to an editing system and a control method thereof capable of significantly improving efficiency of editing work. The editing system is provided with: a server for storing and keeping the video data of edit material; a memory for storing and keeping video data read from the server, the memory having accessibility faster than the server; and an editing terminal for reading, processing, and editing required video data from the memory based on an edit list stored in a selected file, in order to create edited video based on the edit list. When opening the selected file, the editing terminal makes the server read the video data required for creating the edited video based on the edit list being stored in the file and makes the memory store and keep the video data.
    Type: Application
    Filed: July 27, 2004
    Publication date: March 17, 2005
    Inventors: Nobuo Nakamura, Fumio Shimizu, Hideaki Miyauchi, Takeshi Kawamura
  • Publication number: 20050025454
    Abstract: This invention realizes an editing system and control method thereof capable of significantly improving working efficiency of editing work. A proxy editing terminal device creates an EDL with low-resolution video/audio data, resulting in reducing time to create the EDL. Further, the low-resolution video/audio data and high-resolution video/audio data having the same contents and different resolutions are previously stored, so that the creation of a final edit list with the high-resolution video/audio data based on the EDL can be started in a short time after the EDL is created with the low-resolution video/audio data. Thus working efficiency of the editing work can be significantly reduced with reducing time to create the EDL and the final edit list.
    Type: Application
    Filed: July 26, 2004
    Publication date: February 3, 2005
    Inventors: Nobuo Nakamura, Fumio Shimizu, Hideaki Miyauchi, Takeshi Kawamura
  • Publication number: 20050008401
    Abstract: A developing apparatus includes a developer carrying member, disposed opposite to an image bearing member, for carrying developer which is caused to jump from the developer carrying member to the image bearing member to develop an electrostatic latent image formed on said image bearing member by creating an oscillation electric field between the image bearing member and the developer carrying member at an opposing portion where the image bearing member and the developer carrying member are opposed to each other; and a jumping developer regulation member for regulating an area in which the developer is caused to jump in the opposing portion. The jumping developer regulation member is disposed apart from the developer carried by the developer carrying member and is an insulating member or an electrically floating member.
    Type: Application
    Filed: June 14, 2004
    Publication date: January 13, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Takeshi Kawamura, Ken Nakagawa
  • Patent number: 6823159
    Abstract: An image forming apparatus includes an electrophotographic photosensitive member rotated at a peripheral speed of 150 mm/second or more and a specific toner. The toner has a weight-average particle diameter from 5 to 12 &mgr;m, and of the toner having a circle-equivalent diameter of 3 &mgr;m or more, particles with a circularity of 0.900 or more are present at a rate of 90% or more in a number-based cumulative valve. The toner also satisfies one of two sets of conditions defined by the relationship between a cut rate and a weight-average particle diameter and the relationship between a number-based cumulative valve and a weight-average particle diameter. The cut rate Z is represented by the expression: Z=(1−B/A)×100 wherein A is a concentration of all the measured particles and B is a concentration of the measured particles whose circle-equivalent diameters are 3 &mgr;m or more.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: November 23, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroaki Sakai, Seiji Saito, Takeshi Kawamura
  • Publication number: 20040190922
    Abstract: A developer apparatus includes a developer carrying member, for carrying a developer to a developing portion, the developer carrying member including an electroconductive base and a resistance layer provided thereon; a developer feeding member for being supplied with a voltage to supply the developer to the developer carrying member; wherein a surface moving speed of the developer carrying member Vp [mm/sec], a resistance R1 (&OHgr;) of the developer carrying member when an electric current applied the developer carrying member is 0.
    Type: Application
    Filed: February 4, 2004
    Publication date: September 30, 2004
    Applicant: Canon Kabushiki Kaisha
    Inventors: Ken Nakagawa, Junichi Ochi, Takeshi Kawamura