Patents by Inventor Yoshifumi Hattori

Yoshifumi Hattori 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: 10303960
    Abstract: An image processing device includes a contrasting correction unit, a color analysis unit, an object detection unit, and an object relation analysis unit. The contrasting correction unit creates a contrasting corrected image by correcting contrasting of an input image captured by a vehicle camera. The color analysis unit creates a color corrected image by correcting colors of the input image. The object detection unit detects a main sign included in the input image based on the contrasting corrected image and detects an auxiliary sign included in the input image based on the color corrected image. The object relation analysis unit recognizes a traffic sign as a combination of a main sign and auxiliary sign by associating the main sign and the auxiliary sign with each other based on a positional relationship between the main and auxiliary signs, which are detected by the object detection unit, in the input image.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: May 28, 2019
    Assignee: HITACHI, LTD.
    Inventors: Hideharu Hattori, Yoshifumi Izumi
  • Patent number: 6565186
    Abstract: To reduce a quantity of uselessly consumed ink when an ink jet head is recoverably activated, the capacity of an ink path communicated with a group of ejecting ports having a small flow rate coefficient is determined to be smaller than that of an ink path communicated with a group of ejecting ports having a large flow rate coefficient. While all of plural groups of, ejecting ports are fully covered with a common recovering cap with the aid of sucking means, ink is, sucked from the plural groups of ejecting ports. When the ink remaining in the region extending from the plural groups of ejecting ports to predetermined positions in a plurality of ink paths communicated with the plural groups of ejecting ports is discharged, ink discharging positions are dislocated to predetermined positions in a plurality of ink paths to positionally coincide with the predetermined positions in the substantially same timing relationship after ejection recovering treatment starts to be conducted.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: May 20, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshifumi Hattori, Yoichi Tosaka, Mineo Kaneko, Takayoshi Tsutsumi
  • Patent number: 6540314
    Abstract: Ink tank which enables accurate detection of existence/absence of liquid even if a storage containing liquid such as ink is stored under a severe environment, and a cartridge including the ink tank, as well as a printing apparatus utilizing the cartridge. A low surface energy processing agent including alkyl polysiloxane and alcohol is coated on prism 180 provided on the bottom portion of ink tank 7, thereby performing low surface energy processing on the prism 180.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: April 1, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mikio Sanada, Yoshifumi Hattori, Masanori Takenouchi, Osamu Morita, Shinya Mishina, Hiroshi Koshikawa, Kenji Kitabatake
  • Patent number: 6332919
    Abstract: Provided is a black ink capable of mitigating the dependency on image quality of recording media and giving a high quality image stably, which comprises at least one salt selected from the group consisting of (M1)2SO4, CH3COO(M1), Ph_COO(M1), (M1)NO3, (M1)Cl, (M1)Br, (M1)I, (M1)2SO3 and (M1)2CO3, where M1 is an alkali metal, ammonium or organo-ammonium and Ph is a phenyl group, and a self dispersible carbon black.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: December 25, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Osumi, Yoshifumi Hattori, Yoshihisa Takizawa, Shinya Mishina, Mikio Sanada, Hisashi Teraoka, Yuko Yakushigawa
  • Patent number: 6290344
    Abstract: An ink container includes a casing, an air vent which is located in the casing, an ink supply opening for supplying ink out of the casing, and an ink absorbing material that is contained in the casing. The ink absorbing material retains ink therein, and has a generally rectangular parallelopipedal shape defined by sides of the ink absorbing material, and also has an ink supply portion for supplying ink to the ink supply opening. The ink absorbing material includes corner portions which are located between adjacent sides of the ink absorbing material. A preventing means prevents complete surface contact between the casing and said ink absorbing material by providing spaces between the casing and ink absorbing material which are in fluid communication with each other with a given space that is adjacent to a particular one of the corner portions that is most remote from the ink supply portion. The air vent is in fluid communication with the spaces.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: September 18, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideo Saikawa, Seiichiro Karita, Toshio Kashino, Akio Saito, Hiroshi Nakagomi, Teruo Arashima, Makiko Kimura, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Masaaki Izumida, Shigeaki Tanaka, Nobuyuki Kuwabara, Asao Saito, Kazuaki Masuda, Tsuyoshi Orikasa
  • Publication number: 20010020431
    Abstract: Provided is a black ink capable of mitigating the dependency on image quality of recording media and giving a high quality image stably, which comprises at least one salt selected from the group consisting of (M1)2SO4, CH3COO(M1), Ph_COO(M1), (M1)NO3, (M1)Cl, (M1)Br, (M1)I, (M1)2SO3 and (M1)2CO3, where M1 is an alkali metal, ammonium or organo-ammonium and Ph is a phenyl group, and a self dispersible carbon black.
    Type: Application
    Filed: February 16, 2001
    Publication date: September 13, 2001
    Inventors: Koichi Osumi, Yoshifumi Hattori, Yoshihisa Takizawa, Shinya Mishina, Mikio Sanada, Hisashi Teraoka, Yuko Yakushigawa
  • Patent number: 6280513
    Abstract: Provided is a black ink capable of mitigating the dependency on image quality of recording media and giving a high quality image stably, which comprises at least one salt selected from the group consisting of (M1)2SO4, CH3COO(M1), Ph_COO(M1), (M1)NO3, (M1)Cl, (M1)Br, (M1)I, (M1)2SO3 and (M1)2CO3, where M1 is an alkali metal, ammonium or organo-ammonium and Ph is a phenyl group, and a self dispersible carbon black.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: August 28, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Osumi, Yoshifumi Hattori, Yoshihisa Takizawa, Shinya Mishina, Mikio Sanada, Hisashi Teraoka, Yuko Yakushigawa
  • Patent number: 6196655
    Abstract: There is disclosed a method and apparatus for recovering an ink jet head having an opening communicating with a discharge port, the opening being provided on a same planar surface on which the discharge port for discharging ink is provided. An area of the opening is larger than an area of the discharge port. The method includes the steps of forcibly introducing gas into the ink jet head simultaneously through the discharge port and the opening, and exhausting the gas introduced into the ink jet head in the introducing step with ink through the discharge port. The gas introduced into the ink jet head enables the ink to be exhausted at an increased velocity in the exhausting step.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: March 6, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Hirasawa, Koichi Sato, Koji Terasawa, Akira Miyakawa, Tsutomu Abe, Yoshifumi Hattori
  • Patent number: 6174354
    Abstract: The invention provides an ink comprising a coloring material, a solvent for dissolving or dispersing the coloring material, and an amphoteric polymer having both anionic and cationic groups. The invention also provides an ink-jet recording process and apparatus using such an ink.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: January 16, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihisa Takizawa, Yoshifumi Hattori, Mayumi Yamamoto, Mikio Sanada
  • Patent number: 6135589
    Abstract: An ink jet head includes a first member with an energy generating element for generating energy to eject ink, a second member having an ejection outlet forming member provided with an ink ejection outlet through which the ink is ejected, the second member being affixed to the first member to form a liquid passage in fluid communication with the ejection outlet, and urging means for urging the first and second members together to substantially fix them against each other. The ejection outlet forming member has a jaw connected with a surface of the first member which has the energy generating element, the jaw being adjacent a first member side of the ejection outlet. The following relationships are satisfied, namely, b.gtoreq.5 microns, c.gtoreq.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: October 24, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Nakagomi, Teruo Arashima, Kunihiko Maeoka, Takashi Ohba, Jun Kawai, Tsutomu Abe, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Makiko Kimura, Toshio Kashino, Hideo Saikawa, Seiichiro Karita, Tsuyoshi Orikasa
  • Patent number: 6113223
    Abstract: An ink jet recording apparatus includes a liquid passage for ejection of ink; a liquid chamber for supplying ink to the passage; a device for mounting the recording head on the ink jet recording apparatus at an angle not more than 45 degrees relative to the horizontal plane; wherein the chamber has an internal surface which is slanted in a direction from an ink inlet thereof toward the liquid passage at the angle of 5-40 degrees relative to an extension of the liquid passage.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: September 5, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeaki Tanaka, Nobuyuki Kuwabara, Akira Goto, Takashi Watanabe, Kunihiko Maeoka, Masaaki Izumida, Koichi Sato, Tsuguhiro Fukuda, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa, Takashi Ohba, Hiroshi Nakagomi, Teruo Arashima, Jun Kawai, Tsutomu Abe, Toshio Kashino, Makiko Kimura, Hideo Saikawa, Seiichiro Karita
  • Patent number: 6086187
    Abstract: The present invention is related to an ink jet head comprising a substrate having a support, an intermediate layer provided on said support and a lower layer provided on said intermediate layer, and a heat energy generating member which generates heat energy to be utilized for discharging ink provided on said substrate. The ink jet head is characterized in that ink channels communicated to discharge openings for discharging ink are formed corresponding to the heat generating portions of said heat energy generating member on said heat generating substrate, and the thermal conductivity of said intermediate layer is selected higher than that of said support and higher than that of said lower layer.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: July 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshifumi Hattori, Masamichi Suzumura, Haruhiko Terai
  • Patent number: 6070975
    Abstract: An ink jet recording apparatus comprises an ink tank containing ink; a recording head for performing recording by selectively ejecting ink; a mounting portion for mounting the ink tank and the recording head; a liquid passage coupling portion provided on either or both of the ink tank and the recording head for separating or connecting the ink passages in the ink tank and the recording head; a holding portion provided on either or both of the ink tank and recording head for guiding the ink tank to the recording head in order to hold them separably; and an electrically or mechanically connecting portion provided on either or both of the recording head and mounting portion for electrically or mechanically connecting the recording head to or separating it from the mounting portion.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: June 6, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshio Uchikata, Yoshifumi Hattori, Yoji Ara, Masashi Kitani, Etsurou Suzuki, Toshihide Wada, Hiromitsu Hirabayashi, Hideo Saikawa, Masami Kojima, Tadashi Hanabusa, Kenji Kawano, Koichi Tanno, Tetsuyo Ohashi, Toshihiko Bekki, Kenji Aono, Masaharu Ikado
  • Patent number: 6059400
    Abstract: An ink jet head includes a base member, a first member having recesses and coupled with the base member to form ink passages using the recesses and a second member integral with the first member and extending at an angle from an end of the first member, the second member having ink ejection outlets communicating with the ink passages.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: May 9, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makiko Kimura, Toshio Kashino, Teruo Arashima, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa, Takashi Ohba, Kunihiko Maeoka, Jun Kawai, Tsutomu Abe, Hiroshi Nakagomi
  • Patent number: 6027210
    Abstract: Provided is an ink-jet recording process for forming a color image on a recording medium using a liquid formulation and a color ink in combination, wherein the liquid formulation contains a cationic polymer having a weight-average molecular weight in the range of from 400 to 1,400, and the liquid formulation and the ink are each ejected from a recording head having an ink ejection volume per dot of from 2 to 25 picolitters.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: February 22, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yutaka Kurabayashi, Yoshifumi Hattori, Mayumi Yamamoto, Yoshihisa Takizawa, Shinya Mishina, Shinichi Sato, Mikio Sanada, Katsuhiko Takahashi, Eriko Ono, Masashi Ogasawara
  • Patent number: 5976233
    Abstract: Disclosed herein is a water-based pigment ink comprising a coloring material composed of self-dispersing carbon black obtained by bonding at least one hydrophilic group directly or through another atomic group to the surface of carbon black, a humectant of the general formulaH--(CH.sub.2).sub.m --C--((CH.sub.2).sub.n OH).sub.3wherein m and n are independently an integer of from 1 to 5, and an aqueous medium composed of water and a water-soluble organic solvent.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: November 2, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Osumi, Yoshifumi Hattori, Yoshihisa Takizawa, Ryuji Katsuragi, Hisashi Teraoka
  • Patent number: 5956056
    Abstract: Three discharge port groups, each having a plurality of discharge ports, discharge inks of three primary colors to record swaths of the respective colors on a recording medium and repeat the discharging to complete a record. Joints of each of Y, M and C color swaths are spaced from joints of swaths of the other two colors by an equal distance, and the discharge port groups are offset from each other by 8n times of a discharge port pitch in a direction of feed of the recording medium. In a number of image buffers corresponding to the discharge ports, image data in one buffer is separated from image data in a different image buffer by an amount that is an integer multiply of one 8 bit byte.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: September 21, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mineo Kaneko, Haruyuki Matsumoto, Yoshifumi Hattori, Yoichi Tosaka, Isao Ebisawa, Tadashi Yamamoto, Masashi Miyagawa
  • Patent number: 5850238
    Abstract: A sealed ink jet assembly which is removable from an ink jet apparatus includes an ink jet head which has an ejection outlet found at a first surface of the ink jet head, an energy generating element for generating energy to eject ink through the ejection outlet, and an electric contact portion for supplying an electric signal from the ink jet apparatus to the energy generating element by mounting the electric contact portion to the ink jet apparatus. The electric contact portion is provided on the surface of the ink jet head which differs from the first surface, and an integral sealing member covers both the ink ejection outlet and the electric contact portion. The integral sealing member is removed when the assembly is mounted onto the ink jet apparatus.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: December 15, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiichiro Karita, Hideo Saikawa, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa, Toshiaki Nagashima, Norio Hikake
  • Patent number: 5703632
    Abstract: An ink jet head includes a passage-forming member providing a plurality of ink passages and an orifice plate having an array of ejection outlets in communication with respective ink passages. The orifice plate has a plurality of edge portions and the ejection outlets are arranged along a line that runs parallel to at least one of the edge portions and intersects opposing edge portions at crossing points. A confining member is configured to hold the orifice plate against the passage-forming member only in areas proximate to the crossing points.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: December 30, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Teruo Arashima, Makiko Kimura, Toshio Kashino, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa
  • Patent number: 5623287
    Abstract: An ink container, as well as a method of making the same, which has ink absorbing material for retaining ink, a casing for holding the ink absorbing material, an ink supply port through which ink is withdrawn from the absorbing material, and an air vent. The air vent and ink supply port are each provided adjacent to different longitudinal halves of the ink absorbing material, and the casing is initially filled with an amount of ink which is larger than the quantity of ink which can be retained by the ink absorbing material. Then, ink adjacent to the air vent is removed to such an extent that the casing contains the quantity of the ink which the ink absorbing material can retain. Thus, ink is retained at a higher density adjacent to the ink supply port than adjacent to the air vent.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: April 22, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideo Saikawa, Seiichiro Karita, Toshio Kashino, Akio Saito, Hiroshi Nakagomi, Teruo Arashima, Makiko Kimura, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Masaaki Izumida, Shigeaki Tanaka, Nobuyuki Kuwabara, Asao Saito, Kazuaki Masuda, Tsuyoshi Orikasa