Patents by Inventor Kazuyoshi Takahashi

Kazuyoshi Takahashi 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: 6127361
    Abstract: Disclosed are 5,11-Dihydrodibenzo[b,e][1,4]oxazepine derivatives such as (R)-(+)-5,11-dihydro-5-[1-(4-methoxyphenethyl)-2-pyrrolidinylmethyl]dibenz o[b,e][1,4]oxazepine and (R)-(+)-5,11-dihydro-5-[1-(4-fluorophenethyl)-2-pyrrolidinylmethyl]dibenzo [b,e][1,4]oxazepine, stereoisomers thereof, pharmacologically acceptable salts thereof, or hydrates thereof and a phramaceutical composition conating the 5,11-Dihydrodibenzo[b,e][1,4]oxazepine derivatives. The derivatives have an excellent activity of improving a digestive tract moving function and are free of side effect.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: October 3, 2000
    Assignee: Ajinomo Co., Inc.
    Inventors: Yuji Tanaka, Keiji Misumi, Yoshinari Kawakami, Masahiko Moriguchi, Kazuyoshi Takahashi, Hiroki Okamoto, Toshiaki Kamisaki, Kimihiro Inoue, Makoto Sato
  • Patent number: 6116728
    Abstract: An ink jet textile printing apparatus for performing printing by reading an original image created by a designer, converting the original image into original data represented by an electric signal, retrieving the original data for processing to be output as image data, and recording data on cloth based on the image data. The ink jet textile printing apparatus has a first ink jet recording head provided upstream of a recording position, and a second ink jet recording head provided downstream thereof, and is provided with a drying unit located between the recording heads, whereby high-quality recorded images with less bleeding can be obtained by recording on a recording area again with the second ink jet recording head after drying the recording area on the cloth recorded by the first ink jet recording head with the drying unit.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: September 12, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Miyake, Tomohiro Aoki, Kazuyoshi Takahashi, Akio Suzuki, Mitsuru Kurata, Tokihide Ebata, Yoshihiro Takada, Kunihiko Matsuzawa, Hideyuki Tanaami, Yutaka Udagawa, Masatoshi Ikkatai, Keiju Kuboki, Yasushi Miura, Masahiro Nishio, Yasuyuki Takanaka, Eiichi Takagi, Yoshio Komaki, Nobuhiko Ogata
  • Patent number: 6109724
    Abstract: An ink jet recording apparatus comprising, timer means for measring an elapse time from a predetermined measurement start timing, a backup power source for supplying power to said timer means when a main power source is turned off, and control means for changing a content and/or the number of times of a recover operation for recovering and preventing a discharge error in a discharge port for discharging an ink on the basis of the elapse time.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: August 29, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Yasuhiro Numata, Koji Terasawa, Hideo Fukazawa, Hitoshi Miyazaki, Takao Aichi
  • Patent number: 6031974
    Abstract: The invention seeks to reduce amount of image data without detracting from picture quality, thereby lowering processing speed and holding down memory cost. While preserving the density of color image data, a computer compresses the color image data, which has been outputted by an image scanner, to a prescribed number of colors on the basis of the colors of inks. An image processor binarizes the results of compression, while preserving density, on the basis of ink colors. A main unit repeatedly prints a basic image, which is represented by the binarized image data, on cloth supplied from a supply unit.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: February 29, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Makoto Katsuma, Takashi Watanabe, Hiroshi Endo, Toshiyuki Yanaka, Toshiaki Mabuchi, Eiichi Takagi
  • Patent number: 6027200
    Abstract: An information processing apparatus applied to an image forming system, which can repetitively record a basic image, includes a device for obtaining a number of dots forming the basic image on the basis of the image data representing the basic image, and a device for estimating a consumption amount of an expendable consumed by recording an image of a predetermined unit on the basis of the obtained number of dots.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: February 22, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Takashi Watanabe, Toshiyuki Yanaka
  • Patent number: 6024431
    Abstract: An apparatus for performing the printing by scanning a carriage having a plurality of print heads mounted in a predetermined direction relative to the printing medium, so that an image is formed to have a desired color tone and density without decreased throughput. Conversion data for reproducing the color tone and the scan range of the carriage are changed in accordance with the used heads among the mounted heads. Also, the replaceability can be enhanced and the longer life for each group is attained by grouping the heads mounted. Further, the scan range of recording and the scan range for the recovery can be changed by selecting the group for use in accordance with the recording mode. Also, in an ink jet printing apparatus having a longer print length, a printing method for effecting the stable recording is provided.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: February 15, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Shoji Koike, Takashi Watanabe, Hiroshi Endo, Toshiyuki Yanaka, Masatoshi Ikkatai, Yasushi Miura, Yasuyuki Takanaka, Eiichi Takagi, Yoshiko Miyashita
  • Patent number: 5996984
    Abstract: A cylinder apparatus comprises a body having a flat rectangular parallelepiped shape, a cylinder unit for accommodating a piston which is reciprocatable along a cylinder chamber, a toggle link mechanism for converting linear motion of a piston rod into rotational motion, and an arm for making rotation by a predetermined angle in accordance with a driving action of the cylinder unit, wherein reaction force-receiving plates for absorbing reaction force applied when a workpiece is clamped are detachably provided in the body.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: December 7, 1999
    Assignee: SMC Kabushiki Kaisha
    Inventor: Kazuyoshi Takahashi
  • Patent number: 5988791
    Abstract: An ink-jet printing apparatus printing apparatus prints an image with a plurality of similar color inks having different concentrations and a special ink having a single concentration. In the apparatus, graininess resulting from ink dots is decreased for all hues of the printed image. A decision is made as to whether or not a hue of an image to be printed can be printed with inks without the special ink of a color (for example, special color BL (blue)) having a single concentration. When it is decided that the hue of the image is to be printed with inks without the special color ink, data on ink color BL (blue) is decomposed into data on C (cyan) and data on M (magenta). The hue can be printed without the color BL, thereby significantly decreasing graininess in a portion having this hue.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: November 23, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiko Miyashita, Toshiyuki Yanaka, Yasushi Miura, Kazuyoshi Takahashi
  • Patent number: 5984454
    Abstract: A color image forming system allows color image formation using a color (special color) except for yellow (Y), magenta (M), cyan (C), and black (BK) normally used in color image recording. Palette tables in which data defining use of the special colors (S1 to S4) in addition to Y, M, C, and BK are supplied from a host image data supply apparatus to a printer. At the same time, image data is transmitted in the form of data for allowing selection of the defined data in the palette tables. The printer uses Y, M, C, and BK heads and heads of the special colors S1 to S4. A control unit in the printer stores each palette table for each color (508) and outputs a driving signal to the corresponding head on the basis of the corresponding palette table.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: November 16, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Takashi Watanabe, Toshiyuki Yanaka
  • Patent number: 5884015
    Abstract: An image forming apparatus has an upper print head unit and a lower print head unit that print plural printing areas in order on a printing medium. The image forming apparatus defers printing, as long as the image data corresponding to the areas to be printed are not transferred from a host apparatus, and begins printing when the image data are transferred from the host apparatus. The image forming apparatus can thus print an unfixed length of continuous image without monopolizing the host apparatus.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: March 16, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiyuki Yanaka, Kazuyoshi Takahashi, Hiroshi Endo, Toshiaki Mabuchi
  • Patent number: 5854642
    Abstract: Ink bottles containing inks having the same tone and different compositions adapted to respective kinds of fibers for a cloth are provided. Printing heads are provided corresponding to respective inks for performing printing.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: December 29, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Shoji Koike
  • Patent number: 5847729
    Abstract: An ink-jet printing apparatus, having a first printing head at an upper position with respect to a cloth-conveying direction and a second printing head at a lower position with respect to the cloth-conveying direction, scans the printing heads in a direction orthogonal to the cloth-conveying direction. An image printed by the first printing head is complemented by the second printing head. If a stop of printing is instructed during the printing by the first printing head, the printing by the first printing head is stopped, and printing by the second printing head is continued until the position of the image printed by the first printing head is printed by the second printing head. In this manner, a printed image completed to the end of the image can be obtained.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: December 8, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Takashi Watanabe, Hiroshi Endo, Toshiyuki Yanaka, Toshiaki Mabuchi, Eiichi Takagi
  • Patent number: 5838342
    Abstract: A test image is formed by performing overlap printing using a plurality of printing heads provided for a printing agent of one color. Density data attained by reading this test image is averaged. On the basis of this average value, a common correction is performed for drive signals for the printing heads. This makes it possible to perform head density unevenness correction at a high efficiency in performing overlap printing by using the plurality of printing heads.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: November 17, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Takashi Watanabe, Toshiyuki Yanaka
  • Patent number: 5798775
    Abstract: An ink jet recording device includes a recording head unit having discharge ports for discharging ink, ink channels communicating to the discharge ports and leading the ink thereto, and an ink tank unit for storing ink to be supplied to the recording head unit. The recording head unit consists of a device for storing parameter information concerning the ink discharge characteristics, and a protective member disposed on a side face area adjacent to the discharge port formation face for preventing the ink from flowing around.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: August 25, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Kazuaki Masuda, Yoshiaki Takayanagi, Akio Suzuki, Mitsuru Kurata, Tsutomu Abe, Seiichiro Karita, Hiroshi Tajika, Noribumi Koitabashi, Haruo Uchida, Kentaro Yano, Hitoshi Sugimoto, Miyuki Matsubara
  • Patent number: 5754304
    Abstract: When an magnified and synthesized image is finally printed on a printing medium based on an original image and a character font data, linear magnifying processing is executed with the aid of a software on the host computer side for the original image optically read by a scanner. In addition, vector magnifying processing is executed for font data likewise with the aid of a software, and moreover, synthesizing processing is executed for the font data. At this time, forming processing such as edge emphasizing or the like can be executed after completion of the vector magnifying processing. Synthesizing data are additionally magnified in a printer with the aid of a hardware, and subsequently, the magnified and synthesized image is outputted to the printer for performing a printing operation by the latter. An magnifying rate applicable to the host computer and the printer can be determined such that productivity of the image forming system is maximized.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: May 19, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Endo, Kazuyoshi Takahashi, Toshiyuki Yanaka
  • Patent number: 5739926
    Abstract: A system of transmitting and receiving image data comprising a number of pixel data, such as color copying machine or the like, comprises producing image control data regarding the image data to be transmitted on a transmission side; transmitting pixel data of n colors for a period of time when the pixel data of (n+m) colors (n and m are positive integers) can be sequentially transmitted and transmitting the image control data for a period of time when the pixel data of n colors is not transmitted in the period of time when the pixel data of (n+m) colors can be transmitted; producing the pixel data of (n+m) colors on the basis of the pixel data of n colors on a reception side; and executing an image process to the pixel data of n colors or the pixel data of (n+m) colors on the basis of the image control data.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 14, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Yasuhiro Yamada
  • Patent number: 5721621
    Abstract: When a start signal is inputted to an image forming apparatus, initial settings of the reader unit and printer unit are respectively performed in a first step. In a second step, if the apparatus is in the temporary stop state, the operation waits until this state is canceled. During this waiting period, the apparatus does not performs scanning of the next scanning line. If the apparatus is not in the temporary stop state, the operation proceeds to a third step, where the reader units and the printer units start scanning. When print-scanning of one line is completed in a fourth step, the operation proceeds to a fifth step, where data required for the next scanning is transmitted to the reader unit and the printer unit. In a sixth step, the above operation is repeated until the entire image formation is completed.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: February 24, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshio Komaki, Kazuyoshi Takahashi
  • Patent number: 5625384
    Abstract: Replacement of a recording head on a recording apparatus is detected on the basis of a serial number allocated to each recording head. The recording head also carries head characteristic information such as color information, shading information and so forth. When the recording head is replaced with a new one, the head characteristic information of the newly mounted recording head is automatically stored, so that head driving conditions are automatically determined to optimize the recording conditions without requiring any manual adjustment. Recovery operation is automatically executed when replacement of the recording head is detected, so that required recording conditions are recovered without manual instructions.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: April 29, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Numata, Kazuyoshi Takahashi, Yoshiaki Takayanagi, Hiroshi Tajika, Noribumi Koitabashi, Hitoshi Sugimoto, Souhei Tanaka
  • Patent number: 5621440
    Abstract: A recording device which performs recording on a recording medium, comprises a recording head equipped with a row of recording elements arrayed as slanted to the direction vertical to the relative moving direction to said recording medium, and control means which, in dividing the plurality of recording elements constituting said row of recording elements into blocks each of a plurality of recording elements and driving by time division for each of the blocks, stores image data, and in carrying out returning way recording, reads and applies the image data stored in the respective blocks to be driven in the order opposite to that in going way recording.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: April 15, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuyoshi Takahashi
  • Patent number: 5502464
    Abstract: A fixater has a fixing unit for expediting the fixation of an image recorded on a recording medium, a conveying unit for conveying the recording medium and a coupling unit detachably mountable in the mounting section of a cassette for stacking the recording medium for the recording apparatus. The fixater is mountable in place of the cassette for stacking the recording medium.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: March 26, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyoshi Takahashi, Naoji Otsuka, Tokihide Ebata, Hiromitsu Hirabayashi, Hiroshi Tajika, Noribumi Koitabashi, Atsushi Arai, Kenji Aono, Hitoshi Sugimoto