Patents by Inventor Hiroshi Daito

Hiroshi Daito 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: 6135448
    Abstract: A plurality of sheets are fed along a plurality of rows of conveying paths in a state in which leading edges of the respective sheets in the conveying direction are spaced apart from each other in a longitudinal direction, and fed from an outlet of the conveying paths by a high-speed feeding means at a speed which is greater than or equal to a conveying speed of the conveying path. In the feeding section, the plurality of sheets are received by a moving endless belt, arranged, and then fed out. As a result, the present invention can provide a sheet conveying apparatus which has a simple structure and a simple control system and in which a plurality of the sheets which are conveyed along the plurality of rows of the conveying paths are fed while being arranged in a single row in the feeding section.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: October 24, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroshi Daito
  • Patent number: 5251083
    Abstract: A flying head slider has a slider body in which gas bearing rails are formed on a surface thereof disposed in opposed relation to a recording medium. A bleed portion is also provided at the surface of the slider body between a pair of gas bearing rails. The bleed portion is composed of at least a rectangular-shaped deep bleed portion in which the pair of longer sides thereof are directioned in parallel to the longitudinal axis direction of the gas bearing rails.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: October 5, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Yoshinori Takeuchi, Yuzo Yamaguchi, Fumitaka Muranushi, Katsuyuki Tanaka, Kanji Kawakami, Hiroshi Daito, Tetsuo Masukawa
  • Patent number: 5128821
    Abstract: A flying head slider has gas bearing rails formed on a surface thereof disposed in opposed relation to a recording medium. The flying head slider flies at a microscopic distance above the recording medium by a pressure produced by a stream of gas resulted from the rotation of the recording medium. Each of the gas bearing rails comprises an inflow portion disposed at an inflow side of the gas stream so as to produce a pressure, an outflow portion disposed at an outflow side of the gas stream so as to produce a pressure, and a connective portion interconnecting the inflow portion and the outflow portion in a common plane. The connective portion serves to suppress an excessive compression of the gas, and achieves good damping characteristics.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: July 7, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Yoshinori Takeuchi, Yuzo Yamaguchi, Fumitaka Muranushi, Katsuyuki Tanaka, Kanji Kawakami, Hiroshi Daito, Tetsuo Masukawa
  • Patent number: 5107383
    Abstract: A transducer supporting device having a rigid-structure support member connected to a guide arm, and a flexible-structure support member attached to the rigid-structure support member on the side of a free end of the same. Portions of the rigid-structure and flexible-structure support members connected to each other are constructed so that the shear center of these portions is brought closer to the connection surface.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: April 21, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Yoshinori Takeuchi, Yuzo Yamaguchi, Taichi Sato, Hiroshi Daito, Marutomo Goto
  • Patent number: 5014144
    Abstract: An apparatus for supporting and reciprocating a magnetic head slider above a rotating magnetic disk comprises a carrying arm having a free end, a flexible base connected at one end thereof to the free end of the supporting arm, a pair of flexible fingers extending from the other end of the flexible base parallel to an axis of the carrying arm and defining therebetween a space, a traverse bar connecting two free ends of the fingers, and a flexible tongued member on which the magnetic head slider to be mounted, one end of the tongued member being connected to the traverse bar and the other end thereof extending into the space with gaps between the tongued member and the fingers and the base. A reduced part of a minimum cross-section is provided in each of the fingers. The reduced part is located between the one end of the tongued member and a center between the one end of the tongued member and the other end of the base.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: May 7, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Taichi Sato, Yoshiharu Mouri, Kihachiro Tanaka, Yokuo Saitoh, Hiroshi Daito, Tetsuo Masukawa, Yoshinori Takeuchi, Yuzo Yamaguchi, Satomitsu Imai
  • Patent number: 5014142
    Abstract: A magnetic disk apparatus has a disk assembly including a single servo disk and a plurality of data disks, a servo-head supporting structure for supporting a servo head and data-head supporting structures for supporting data heads. These heads are so disposed as to cooperate with respective disks. The servo-head and data-head supporting structures are driven by an actuator to move the servo head and the data heads to the required positions on the corresponding disks. The servo-head supporting structure and each of the data-head supporting structures have different proper oscillations to prevent the occurrence of a resonance during a seek operation.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: May 7, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Eiji Nakanishi, Toshio Suzuki, Masato Furusaki, Kiyoji Morita, Hiroshi Sakurai, Hiroshi Daito, Mikio Takahashi
  • Patent number: 4984114
    Abstract: A flying head slider for supporting a magnetic head operative to transmit information into and out of a recording medium has a slider body having a surface to be disposed in faced relationship to the recording medium. Positive pressure generating portions are formed on the surface of the slider body to generate a positive pressure during rotation of the recording medium relative to the slider body. A bearing is formed in the fluid-inlet end of each positive pressure generating section to enhance a bearing action due to abrupt compression of fluid. A bleed slot is defined between the positive pressure generating sections and has a fluid-inlet end provided with a negative pressure generating means, whereby the slider stably floats a predetermined distance away from the recording medium during rotation thereof to enable the magnetic head to transmit information.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: January 8, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Yoshinori Takeuchi, Yuzo Yamaguchi, Katsuyuki Tanaka, Fumitaka Muranushi, Hiroshi Daito
  • Patent number: 4922356
    Abstract: A transducer supporting apparatus is provided with a rigid structural support connected to a rigid arm portion and a flexible strucural support provided on the free end of the rigid structural support, the flexible structural support comprising two flexible fingers, a transverse frame connecting the two flexible fingers on the extending side thereof through steps, and a slider mounting portion having a tongue form which extends from this frame and is provided adjacent to the two flexible fingers and a slider loaded with a transducer being junctioned with the slider mounting portion. The flexible fingers are so configurated that the end thereof on the side of the rigid arm portion is brought nearer to the plane formed by the floating surface of the slider than the end thereof on the side of the slider mounting portion.
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: May 1, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Yuzo Yamaguchi, Yoshinori Takeuchi, Yokuo Saitoh, Hiroshi Daito, Hiroyasu Nakajima, Yoshiakira Karakama, Yukimori Umakoshi, Kazunori Hori, Mikio Tokuyama
  • Patent number: 4884154
    Abstract: The invention designed to improve the precision in determining the position of the magnetic head and to enable more stable maintenance of the gap between the transducer and the recording disk is characterized in that the flange provided to the transducer supporting arm is made lower in height on the rigid arm side than on the magnetic head side.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: November 28, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Shuji Onodera, Taichi Sato, Kihachiro Tanaka, Yokuo Saitoh, Hiroshi Daito, Yoko Yamada, Yuzo Yamaguchi, Yoshinori Takeuchi, Shigeo Hara, Shouichi Setone
  • Patent number: 4879618
    Abstract: An actuator for a magnetic disk device causes movement of a magnetic head in the radial direction of a rotating magnetic disk. Although this magnetic head is floated above the magnetic disk by a stream of air induced by the rotation of the magnetic disk at a high speed, an excessively high velocity of the air stream causes excessive vibrations of a soft gimbal resiliently supporting the magnetic head. In the actuator of the present invention, a head arm supporting the magnetic head through the gimbal is formed with a wind-breaking projection preventing direct impingement of the air stream against the gimbal and magnetic head, thereby minimizing vibrations of the gimbal and magnetic head.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: November 7, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Muneo Iida, Masanobu Honda, Katsumi Kawamura, Hiroshi Daito, Yoshihiko Miyake, Shouichi Setone, Hatsuo Takahashi, Michihiro Nakanishi
  • Patent number: 4853812
    Abstract: A magnetic head supporting structure includes a gimbal member which carries a core slider and which is provided with a loading projection, and a loading beam member having one end connected with the gimbal member and contacting the loading projection to urge the core slider towards a recording medium. The surface of the portion of the loading beam member contacting the loading projection is offset from the surface of the loading beam member connected with the gimbal member, to thereby reduce the height difference between the plane and the centroid of the core slider. The reduced height difference reduces the moment which acts on the core slider during movement thereof, thus enabling the core slider to stably float without inclination with respect to the magnetic recording surface.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: August 1, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Daito, Sigeo Hara
  • Patent number: 4786999
    Abstract: A suspension mount apparatus for a transducer used in a magnetic memory for recording and reproduction, is characterized in that the points, at which a rigid arm and a magnetic head/arm assembly supported by the rigid arm are connected to each other, are provided within a region in which the rigidity of the connecting points vary at constant rates with respect to the distances between the connecting points and the borderlines between the rigid arm and the assembly.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: November 22, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Kihachiro Tanaka, Taichi Sato, Shuji Onodera, Yokuo Saitoh, Hiroshi Daito, Yoko Murata, Shigeo Hara, Shoichi Setone
  • Patent number: 4723186
    Abstract: An improved magnetic head support mechanism intended for causing a magnetic head to float over a magnetic recording medium, comprises a spring member for retaining the magnetic head and a loading beam member provided with flanged portions along both longitudinal sides thereof and connected to the spring member at one end thereof and coupled to a shifting mechanism at the other end thereof and capable of giving the magnetic head an urging force to act on the magnetic recording medium. The loading beam member is penetratingly formed with at least one passing hole which permits the passing therethrough of an air stream generated by the rotational movements of the magnetic recording medium when the magnetic head is floating, so that it is possible to reduce the exciting force acting on the loading beam member and to thereby obtain the stabilized floating of the magnetic head.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: February 2, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Hiroyasu Nakajima, Hiroshi Daito, Yokuo Saitoh, Yuzo Yamaguchi