Patents by Inventor Hirofumi Hirano

Hirofumi Hirano 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: 5731826
    Abstract: A preliminary ejection sensor of an ink jet recording apparatus includes a vibration plate adapted to vibrate on receipt of an ink droplet ejected from an ejection port on a recording head in order to detect the vibration of the vibration plate depending on variation of a gap between a core and the vibration plate, whereby it can be checked whether ink is ejected from the recording head or not. In addition, the preliminary ejection sensor can check the present ink ejecting state of the recording head. Thus, in contrast with a conventional sensing system wherein ink ejection is sensed by an optical sensor on one side surface of the recording head, the structure of the ink jet recording apparatus can be simplified.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: March 24, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirofumi Hirano
  • Patent number: 5731829
    Abstract: An information processing apparatus includes an input portion for inputting information, a recording portion capable of recording information input by the input portion onto a recording medium and a moving mechanism capable of vertically moving the recording portion and holding the recording portion at a predetermined position.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: March 24, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Saito, Toshiaki Ozawa, Hiroatsu Kondo, Koh Hasegawa, Junichi Asano, Toshihide Wada, Hiroyuki Inoue, Takuma Kanno, Hirofumi Hirano, Toshihiko Bekki, Hiroyuki Hagiwara
  • Patent number: 5717444
    Abstract: A suction recovery device of ink jet recording apparatus comprises a cap which can contact with or separate from a face formed with discharge ports for recording by discharging the ink, the cap communicating to a suction system for performing the suction recovery through the discharge ports via the cap, said cap having a groove portion for guiding ink, and formed of an elastic material integrally with an ink communication member for communicating to the suction system via a suction port provided on an inner wall of the cap, and said suction system having a cylinder and a piston reciprocating within the cylinder, and having disposed ink absorbing member in an ink exhaust portion within the cylinder.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: February 10, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hitoshi Sugimoto, Hirofumi Hirano, Yoji Ara, Masaharu Ikado
  • Patent number: 5710580
    Abstract: An ink jet recording head mountable in a recording apparatus, provided with a cleaning member capable of cleaning the ink discharging port formation surface of the recording head for discharging ink, in which there is provided for the ink jet recording head a concavity or a plurality of concavities in the traveling path of the cleaning member on the discharging port formation surface cleaned by the cleaning member at the upstream side in the traveling direction from the discharging port formation area for discharging ink; thus removing the foreign particle on the discharging port surface reliably to perform a stable recording.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: January 20, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoji Otsuka, Hiromitsu Hirabayashi, Atsushi Arai, Hirofumi Hirano, Kentaro Yano, Hitoshi Sugimoto, Masaharu Ikado
  • Patent number: 5702191
    Abstract: A sheet feeding apparatus includes a conveyor for applying a conveying force to a sheet, a first guide for guiding the sheet to which the conveying force is applied from the conveyor, a second guide for guiding the sheet guided by the first guide along a curved path, a driver for driving the conveyor, and a controller for controlling the driver to increase the conveying force of the conveyor when the sheet being conveyed by the conveyor is guided with being abutted against the second guide.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: December 30, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaaki Kakizaki, Hirofumi Hirano, Toshihiko Bekki
  • Patent number: 5689293
    Abstract: An ink jet recording apparatus has a cap that is movable between a capping position, in which it covers a discharge port of a recording head, and a release position, in which the cap is spaced from the recording head. A wiping member is movable between the recording head and the cap to wipe the recording head surface having the discharge port when the cap is in its release position. The wiping member is movable to a stored position to allow the cap to move to its capping position.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: November 18, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirofumi Hirano
  • Patent number: 5534894
    Abstract: An ink jet recording apparatus wherein ink is ejected on a recording medium to effect recording includes a platen for regulating a recording surface of the recording medium; a confining member contactable to the platen to confine the recording medium; and an elastic member, disposed at a bottom of the apparatus, for urging the confining member to the platen.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: July 9, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Hirano, Toshihiko Bekki, Makoto Kashimura, Takehiko Kiyohara, Tetsuhiro Nitta, Tetsuo Kimura
  • Patent number: 5531531
    Abstract: A paper feed device for a recording apparatus includes means for containing a plurality of sheets therein, supply means for feeding the sheets from the containing means, conveyor means for feeding the sheets fed by the supply means in the paper feeding direction and in the opposite direction so as to pass through a recording station, a reversible motor for commonly driving the supply means and the conveyor means, means for driving the conveyor means in the paper feeding direction by forward rotation of the motor, driving the conveyor means in the opposite direction by reverse rotation of the motor and driving the supply means, and means for selectively inhibiting the operation of the supply means during the reverse rotation of the motor.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: July 2, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirofumi Hirano
  • Patent number: 5485991
    Abstract: The present invention provides an automatic sheet feeding apparatus comprising sheet supporting means for supporting a plurality of sheets, sheet supply means for feeding out the sheets supported by the sheet supporting means, separation means for separating the sheets one by one by abutting the sheet against the separation means and by riding one of the sheets over the separation means, and flexion permitting means for causing the sheet supply means not to apply the load to the flexion of the sheet produced when the sheet is riding over the separation means.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: January 23, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Hirano, Koh Hasegawa, Hiroyuki Inoue, Toshihiko Bekki, Masaharu Ikado
  • Patent number: 5479194
    Abstract: An ink jet recording apparatus includes a recording device for depositing ink onto a recording medium with relative movement therebetween to effect recording on the recording medium; a shaft engageable with a part of the recording device and rotatable about an eccentric axis; and a member for supporting the shaft adjacent longitudinal ends thereof for eccentric rotation of the shaft to change relative positional relation between the recording device and the recording medium.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: December 26, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Hirano, Yasuhiro Unosawa
  • Patent number: 5454555
    Abstract: The present invention provides a horizontally set recording apparatus provided with a sheet inserting and discharging holes at the upper surface, wherein substantially linear recording sheet transporting route passing through the recording section is formed, and an automatic sheet feeding apparatus can be removably attached thereon. The recording sheet is delivered into an inlet opening of said transporting route.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: October 3, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takehiko Kiyohara, Tetsuhiro Nitta, Makoto Kashimura, Hirofumi Hirano, Toshihiko Bekki, Tetsuo Kimura
  • Patent number: 5384586
    Abstract: A recording device wherein ink is deposited on recording materials to effect recording including first and second feeders for feeding the recording materials to a recorder, and a discharger for discharging the recording materials from the recorder such that the recording device can be placed horizontally and vertically in use. When the device is placed horizontally the recording materials are conveyed in a generally U-shaped path, and when the device is placed vertically the recording materials are conveyed in a generally rectilinear path.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: January 24, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Hirano, Toshihiko Bekki, Makoto Kashimura, Takehiko Kiyohara, Tetsuhiro Nitta, Tetsuo Kimura
  • Patent number: 5245361
    Abstract: In an ink jet recording device having an ink tank integrated type jet recording head and a carriage for mounting the head thereon, good electrical connection is obtained wherein the electrical pad of the connecting terminal of the recording head and the electrical pad of the connecting terminal of the carriage are connected to each other while rubbing against one another. Further, also by specifying the arrangement position of the positioning member, more accurate electrical conduction is effected and also breaking of the positioning member is prevented, thereby providing an ink jet recording device having high reliability in aspects of both recording and durability.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: September 14, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kashimura, Toshihiko Bekki, Hirofumi Hirano, Tetsuo Kimura
  • Patent number: 5235353
    Abstract: A recording apparatus for effecting recording on a recording medium has a recording head for effecting recording on the recording medium, conveying rollers for conveying the recording medium, a first and a second case for covering the recording head and the conveying means, and a mechanism for effecting relative movement of the first case and the second case.
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: August 10, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Hirano, Makoto Kashimura, Katsuyuki Yokoi, Takashi Akiya, Jun Katayanagi, Tetsuo Kimura
  • Patent number: 5187497
    Abstract: An ink jet recording apparatus includes a recording device for depositing ink onto a recording medium with relative movement therebetween to effect recording on the recording medium; a shaft engageable with a part of the recording device and rotatable about an eccentric axis; and a member for supporting the shaft adjacent longitudinal ends thereof for eccentric rotation of the shaft to change relative positional relation between the recording device and the recording medium.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: February 16, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Hirano, Yasuhiro Unosawa
  • Patent number: 5182581
    Abstract: An ink tank for storing recording ink comprises an ink storage section including an ink holding member for holding ink and substantially entirely occupying an ink storage space and a ventilation section having a vent hole communicating with the interior of the ink tank with atmosphere, the ventilation section including an ink-repellent member having an ink-repellent character. The ink holding member can be formed of one porous member or two porous members, one of high and one of low porosity. The member with high porosity is provided adjacent an ink supply port. An ink jet recording head also comprises the same ink tank and an ink jet recording head section including an ink discharge port for discharging ink, an ink passage communicating with the ink discharge port and an energy generation element for generating energy utilized for ink discharged. Further an ink jet recording apparatus includes the same ink jet recording head.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: January 26, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kashimura, Hiroshi Nakagomi, Seiichiro Karita, Tsuguhiro Fukuda, Tetsuo Kimura, Hirofumi Hirano, Mitsuru Kurata
  • Patent number: 5166708
    Abstract: A recording apparatus has a first carrier carrying a first recording head thereon and a second carrier carrying a second recording head thereon the apparatus is operable in a first recording mode in which the first carrier is moved to thereby effect recording, and a second recording mode in which the first carrier and the second carrier are both moved to thereby effect recording. In a recovery operation, a recovery suction is selectively applied to the recording heads through a switching mechanism. A single pump is the source of the recovery suction.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: November 24, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Hirano, Shinichi Omo, Hiroshi Fukui
  • Patent number: 5148203
    Abstract: An ink jet recording apparatus includes a shaft for receiving rotational driving force; a clutch gear mounted on the shaft rotated by rotation of the shaft and movable in a longitudinal direction of the shaft; a transmission gear engageable with the clutch gear in accordance with movement and rotation of the clutch gear, wherein a predetermined mechanism is operated by rotation of the transmission gear by engagement with the clutch gear. The clutch gear includes a flange disposed at a position engageable with a portion of the transmission gear to prevent rotation of the transmission gear before the movement of the clutch gear for the engagement with the transmission gear; a starting tooth for engagement with a predetermined tooth of the transmission gear in accordance with the movement and the rotation; and a non-engagement portion faced to the transmission gear before the engagement of the starting teeth.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: September 15, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirofumi Hirano
  • Patent number: 5105210
    Abstract: A recording apparatus for effecting recording on a recording medium has a recording head for effecting recording on the recording medium, conveying rollers for conveying the recording medium, a first and a second case for covering the recording head and the conveying means, and a mechanism for effecting relative movement of the first case and the second case.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: April 14, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Hirano, Makoto Kashimura, Katsuyuki Yokoi, Takashi Akiya, Jun Katayanagi, Tetsuo Kimura
  • Patent number: 5090827
    Abstract: In a printer with reciprocating carriage, a motor mounted on the carriage is used for up-down motion of the recording head, reciprocating motion of the carriage and sheet feeding motion so that the printer can be made compact and less expensive. The carriage engages with the sheet driving mechanism when it is positioned at the left end position to advance the recording sheet.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: February 25, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Hirano, Akihiko Sukigara