Patents by Inventor Toshio Nakai

Toshio Nakai 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: 5307488
    Abstract: A system interruption apparatus alternately sends interruption signals INT1 and INT2 at first time intervals to a central processing unit executing an operation if interruption does not occur within a second time interval to thereby cause an interruption and suspend the operation of the central processing unit.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: April 26, 1994
    Assignee: Nippon Steel Corporation
    Inventor: Toshio Nakai
  • Patent number: 5070393
    Abstract: An overcoat layer possessing an insulating property is formed only in the necessary part on a ceramic substrate formed of a sintered aluminum nitride. An aluminum nitride substrate for the formation of a thin-film conductor layer thereon is composed of the ceramic substrate and the overcoat layer both mentioned above. The overcoat layer serves the purpose of alleviating the jogging contour of the surface of the sintered aluminum nitrate and enhancing the smoothness of this surface. A semiconductor device is produced by forming a thin-film conductor layer destined to constitute a circuit part on the overcoat layer. The excellence in the surface smoothness of the overcoat layer enhances the reliability of the thin-film conductor layer in a great measure. Semiconductor elements are mounted on the exposed part of the sintered aluminum nitride where the overcoat layer is absent.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: December 3, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Noriko Nakagawa, Takaaki Yasumoto, Toshio Nakai
  • Patent number: 4855537
    Abstract: A circuit board comprises a mesh-shaped earth line including first earth lines extending in the X direction and second earth lines extending in the Y direction, an insulative layer formed on the earth line, and a signal line which is formed on the insulative layer to be insulated from the mesh-shaped earth line by the insulative layer. Among the first earth lines and the second earth lines, a line width of the portion of the signal line which crosses the earth lines which have a large crossing angle with the signal line is 0 or smaller than the line width of the earth lines which have a small crossing angle with the signal line among the first earth lines and the second earth lines.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: August 8, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshio Nakai, Takeshi Miyagi, Osamu Shimada
  • Patent number: 4775880
    Abstract: A contact type amorphous linear image sensor is disclosed with planar comb-shaped electrodes. Photoelectric converting elements are linearly aligned on a stripe-shaped amorphous silicon layer formed on an insulative substrate. These elements serve as photoconductive cells and are divided into M cell groups. Each cell unit includes N comb-shaped individual cell electrodes and a multi-tooth comb-shaped common electrode, which are spacially meshed or overlapped with each other. A drive voltage detector is connected through a matrix circuit configuration to the cell electrodes, which are arranged such that two-side-ended cell electrodes surround in each cell unit the both side-ended teeth of the corresponding common electrode, so that the adjacent side-ended teeth of the neighboring common electrodes are electrically shielded by the side-ended teeth of the cell electrodes. A signal detecting pre-amplifier is connected to the common electrodes through analog switches and a load resistor.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: October 4, 1988
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kouhei Suzuki, Toshio Nakai, Kuniaki Anbo, Osamu Shimada
  • Patent number: 4758108
    Abstract: A printer, including a first and a second feed mechanism supported by a carriage for feeding a print ribbon and an erase ribbon, respectively, at least one rotatable shaft supported by the reciprocating carriage rotatably in opposite directions, a one-way clutch for transmitting the shaft rotation in one of the opposite directions to the first feed mechanism, and inhibiting transmission of the rotation in the other direction, and a control mechanism for inhibiting transmission of the shaft rotation to the second feed mechanism when the printer is in a printing mode, and transmitting the shaft rotation to the second ribbon mechanism when the printer is in a correction mode, whereby the carriage reciprocation activates the first and second feed mechanisms. A converter may be provided for converting the shaft rotation into movements of a ribbon lift to shift the erase ribbon between an erasing and an inoperative position.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: July 19, 1988
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toshio Nakai, Osamu Nagata, Kenji Sakakibara, Michitoshi Akao, Shigeyuki Hayashi, Toshio Takahashi, Hidetoshi Asada
  • Patent number: 4725157
    Abstract: In a printing device according to the present invention, a housing assembly comprises a pair of housings which are rockably supported, with their respective open end portions abutting against each other. A platen is disposed in an abutment region where the open end portions abut. A keyboard is provided on the one housing, while a printing element is disposed inside the other housing. When the printing device is in a nonusable position, the two housings extend along one plane, thus defining a flat, rectangular outline of the housing assembly. When the device is in a usable position, the housings are rocked relatively, thus defining a substantially L-shaped outline of the housing assembly. As the housings rock in this manner, the printing element is brought to a printing position, where the element faces the platen.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: February 16, 1988
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toshio Nakai, Osamu Nagata, Kenji Sakakibara, Michitoshi Akao, Shigeyuki Hayashi, Toshio Takahashi
  • Patent number: 4663535
    Abstract: A contact type color image sensor reads out a document image at its actual size while moving along the length of the document. The photosensitive cell arrays, each having pixel electrodes which prescribe n photosensitive cells (where n is a positive integer), are aligned on the substrate. Filter films are positioned over the cell arrays. The radiated image light is converted into the three primary color components of red, green and blue, and R, G, B color signals necessary for color reproduction of the document image are obtained from the respective cell arrays. The n photosensitive cells are arranged at a predetermined pitch p along the main scanning direction X in each array, and the cell arrays are arranged at a sub-scanning direction pitch q which is larger than the pitch p by a factor of K (where k is larger than 1 and k.times.n is a natural number).
    Type: Grant
    Filed: May 22, 1985
    Date of Patent: May 5, 1987
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshio Nakai, Tamio Saito
  • Patent number: 4654536
    Abstract: A contact-type color image sensor in which pixel electrodes are linearly provided in a main scanning direction and three (or four) rows thereof are arrayed in a subscanning direction, color filters for color-separating are provided to oppose the pixel electrodes, an amorphous semiconductor film is formed on the pixel electrodes, and a common transparent electrode is formed on the amorphous semiconductor film. This color image sensor allows color-separation in the subscanning direction to maximize the areas of pixel electrodes.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: March 31, 1987
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tamio Saito, Toshio Nakai
  • Patent number: 4299503
    Abstract: A character selection mechanism for a typewriter having a single type head with characters arranged in rows and columns thereon, which mechanism comprises, for either row selection and column selection similarly, a series of cams, a series of cam followers, a series of transmitting members, and an output member, as one set. The cams are fixed on a cam shaft which is rotated once in response to depressing of any one key. Each of the cam followers is rotated by each corresponding cam and is shifted, against a biasing force, by each corresponding transmitting member from a first position to a second position in response to depressing of the corresponding key. The cam follower engages the output member at the second position for controlling its operation based on the rotation of the cam shaft. The output member is connected to the type head via a connecting mechanism.
    Type: Grant
    Filed: August 7, 1979
    Date of Patent: November 10, 1981
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tomoyoshi Watanabe, Toshio Nakai, Susumu Kuzuya, Hiroshi Onoda, Akira Asai, Takayuki Iwase, Kazuo Nakamura
  • Patent number: 4283150
    Abstract: An electric typewriter having a prevention mechanism for preventing printing errors caused by a depression of a few keys in very rapid succession. The prevention mechanism includes a lock member for locking a clutch, which is interposed between a drive motor and a printing mechanism, in a disengaged condition. The lock member is normally held in a non-operational position for allowing the clutch to be engaged, and is moved in response to a special operation of a sensing member to an operational position for keeping the clutch in a disengaged condition. The sensing member is so disposed as to be moved in a distinct way different from the normal operation mode when a few keys have been depressed in very rapid succession.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: August 11, 1981
    Assignee: Brother Kogyo Kaisha
    Inventors: Masami Hanazono, Tomoyoshi Watanabe, Toshio Nakai, Susumu Kuzuya, Akira Asai, Takayuki Iwase, Kazuo Nakamura, Hiroshi Onoda
  • Patent number: 4277192
    Abstract: A power operated typewriter having an end of line locking mechanism comprises a clutch interposed between a drive motor and a printing mechanism, a control lever for engaging the printing clutch to print a character by the printing mechanism when a key lever is depressed, and lock means for locking the control lever so as to hold the printing clutch in its disengaged condition, which can prevent any printing operation even if the key lever is depressed after the right-hand margin position has been reached and is operative.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: July 7, 1981
    Assignee: Brother Industires, Ltd.
    Inventors: Toshio Nakai, Susumu Kuzuya, Hiroshi Onoda, Takayuki Iwase, Akira Asai
  • Patent number: 4234262
    Abstract: A single element print head having an apparatus for firmly and releasably attaching itself to the drive shaft of a typewriter. The body of the print head is provided with a central opening therethrough for receipt of the drive shaft. A cap is secured on the body around one end of the opening with the purpose of slidably holding a manual slide member in its guide recess and fixedly holding a base portion of a hair pin shaped spring in its holding groove. The spring has a pair of arms for firmly fastening therebetween, and for releasing the drive shaft by virtue of its resilience and the action of a pair of cam surfaces. The pair of cam surfaces are formed in the bottom portion of the slide member, diverging from one end to the other end like a front portion of a bullet, for expanding the arms from each other to release the arms from the drive shaft by means of the slide movement of the slide member.
    Type: Grant
    Filed: April 3, 1979
    Date of Patent: November 18, 1980
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toshio Nakai, Susumu Kuzuya, Akira Asai, Takayuki Iwase, Hiroshi Onoda, Kazuo Nakamura
  • Patent number: D301015
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: May 9, 1989
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Nakai
  • Patent number: D301310
    Type: Grant
    Filed: May 9, 1986
    Date of Patent: May 30, 1989
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Nakai
  • Patent number: D327450
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: June 30, 1992
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Nakai
  • Patent number: D339750
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: September 28, 1993
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Nakai
  • Patent number: D349246
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: August 2, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Nakai
  • Patent number: D349249
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: August 2, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Nakai
  • Patent number: D355376
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: February 14, 1995
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Nakai
  • Patent number: D355380
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: February 14, 1995
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Nakai