Patents by Inventor Toshihiko Ochiai

Toshihiko Ochiai 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: 7280775
    Abstract: An image-forming apparatus includes a movable lever which functions as a recording medium detector for detecting the passage of a recording medium and a temperature detecting portion provided on the movable lever. The temperature of the recording medium is detected without providing an additional space for a sensor for detecting the temperature of the recording medium.
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: October 9, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yutaka Kubochi, Eiichiro Kimizuka, Fumiki Inui, Satoru Izawa, Masataka Mochiduki, Toshihiko Ochiai, Takao Kawadu, Koji Nihonyanagi, Shinji Hashiguchi
  • Patent number: 7215899
    Abstract: According to the present invention, a temperature sensing part of temperature sensing means is arranged to come into contact with the surface opposite to the image surface of a recording material at the time of one-sided printing without providing such an opposed member that comes into contact with the image surface of the recording material at least in a position corresponding to the position of the temperature sensing part that is in contact with the recording material.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: May 8, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Eiichiro Kimizuka, Yutaka Kubochi, Fumiki Inui, Eiji Uekawa, Akihito Kanamori, Satoru Izawa, Masataka Mochiduki, Toshihiko Ochiai, Koji Nihonyanagi, Shinji Hashiguchi
  • Patent number: 7200355
    Abstract: An image heating apparatus is for heating an image formed on a recording material, and has a first roller, a second roller cooperating with the first roller to form a conveying nip portion for passing the recording material therethrough, and heating means for heating the first roller from the outer peripheral surface side thereof, and each of the first roller and the second roller has an adiabatic layer formed of a porous ceramics material and an elastic layer disposed outside the adiabatic layer. Thereby, consumed power during the passing of the recording material can be suppressed.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: April 3, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Uchiyama, Toshihiko Ochiai, Ryukichi Inoue
  • Patent number: 7035562
    Abstract: An image forming apparatus includes an image bearing member for carrying a toner image; an image forming unit for forming a toner image on the image bearing member; a transfer material carrying member, for carrying a transfer material, wherein the toner image is transferred onto a transfer material carried on the transfer material carrying member or onto the transfer material carrying member; a density detecting unit for detecting a density of the toner image transferred to the transfer material carrying member; wherein a transfer intensity is smaller when the toner image for density detection is transferred onto the transfer material carrying member than when the toner image is transferred onto the transfer material carried on the transfer material carrying member.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: April 25, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takehiko Suzuki, Akihiko Takeuchi, Toshihiko Ochiai, Motoi Katoh, Toshiaki Miyashiro, Takao Kume
  • Publication number: 20050201788
    Abstract: An image-forming apparatus includes a movable lever which functions as a recording medium detector for detecting the passage of a recording medium and a temperature detecting portion provided on the movable lever. The temperature of the recording medium is detected without providing an additional space for a sensor for detecting the temperature of the recording medium.
    Type: Application
    Filed: February 11, 2005
    Publication date: September 15, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yutaka Kubochi, Eiichiro Kimizuka, Fumiki Inui, Satoru Izawa, Masataka Mochiduki, Toshihiko Ochiai, Takao Kawadu, Koji Nihonyanagi, Shinji Hashiguchi
  • Publication number: 20050191075
    Abstract: According to the present invention, a temperature sensing part of temperature sensing means is arranged to come into contact with the surface opposite to the image surface of a recording material at the time of one-sided printing without providing such an opposed member that comes into contact with the image surface of the recording material at least in a position corresponding to the position of the temperature sensing part that is in contact with the recording material.
    Type: Application
    Filed: February 23, 2005
    Publication date: September 1, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Eiichiro Kimizuka, Yutaka Kubochi, Fumiki Inui, Eiji Uekawa, Akihito Kanamori, Satoru Izawa, Masataka Mochiduki, Toshihiko Ochiai, Koji Nihonyanagi, Shinji Hashiguchi
  • Publication number: 20050169679
    Abstract: An image heating apparatus is for heating an image formed on a recording material, and has a first roller, a second roller cooperating with the first roller to form a conveying nip portion for passing the recording material therethrough, and heating means for heating the first roller from the outer peripheral surface side thereof, and each of the first roller and the second roller has an adiabatic layer formed of a porous ceramics material and an elastic layer disposed outside the adiabatic layer. Thereby, consumed power during the passing of the recording material can be suppressed.
    Type: Application
    Filed: January 26, 2005
    Publication date: August 4, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Koji Uchiyama, Toshihiko Ochiai, Ryukichi Inoue
  • Patent number: 6377777
    Abstract: A fluorine-containing resin-coated pressure roller exhibiting excellent anti-toner soiling characteristic even at low roller temperatures is provided. The pressure roller includes a cylindrical metal substrate, and a rubber elastic layer, an adhesive layer and a fluorine-containing resin release layer disposed in this order on and successively coating the cylindrical metal substrate. The pressure roller has a surface exhibiting a micro-rubber hardness of at most 50 deg., a contact angle with water of at least 105 deg. and a ten point-average surface roughness Rz of at most 3.0 &mgr;m. The pressure roller may be suitably combined with a fixing film to provide a film heating-type fixing device suitably used in an electrophotographic image forming apparatus.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: April 23, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Kishino, Yasumasa Ohtsuka, Toshihiko Ochiai, Masaaki Takahashi, Akira Hayakawa, Hideo Kawamoto, Mahito Yoshioka, Osamu Soutome, Kenji Karashima, Yuji Kitano
  • Patent number: 6366745
    Abstract: The present invention provides an image forming apparatus which has an image bearing member for bearing an image, a transferring member for forming a transfer nip portion between the image bearing member and the transferring member, wherein a recording material is pinched and conveyed and an image on the image bearing member is transferred onto the recording material in the transfer nip portion, a rotary member contacted with the image on the recording material, and a driving roller for forming a fixing nip portion between the rotary member and the driving roller and for driving the rotary member, wherein the recording material bearing the image is pinched and conveyed and the image is fixed to the recording material in the fixing nip portion, and wherein regarding at least a recording material having a maximum size, while the image is being transferred in the transfer nip portion, the image is fixed in the fixing nip portion, and wherein a peripheral speed of the driving roller is always greater than a conve
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: April 2, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobukazu Adachi, Yasumasa Otsuka, Toshihiko Ochiai, Seietsu Miura, Mahito Yoshioka, Takeshi Niimura, Kenji Karashima
  • Patent number: 6151477
    Abstract: An image forming apparatus comprises an image bearing member for bearing an image, and a movable member which is abutted against the image bearing member and onto which the image on the image bearing member is transferred. The movable member includes a substrate, a sheet-like member, and an elastic layer disposed between the substrate and the sheet-like member and compressed to a predetermined thickness before the movable member is abutted against the image bearing member.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: November 21, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiko Takeuchi, Toshihiko Ochiai, Motoi Kato, Toshiaki Miyashiro, Nobuaki Kabeya, Takehiko Suzuki
  • Patent number: 6091913
    Abstract: An image forming apparatus includes an image bearing member for carrying a toner image; an image forming unit for forming a toner test image on the image bearing member; a transfer material carrying member, for carrying a transfer material, wherein the test toner image is transferred onto a transfer material carried on the transfer material carrying member or onto the transfer material carrying member; and a density detecting unit for detecting a density of the toner test image transferred to the transfer material carrying member. A transfer intensity is smaller when the toner test image for density detection is transferred onto the transfer material carrying member than when the toner test image is transferred onto the transfer material tarried an the transfer material carrying member. The transfer intensity also changes depending on whether the transferred toner test image is the first color toner test image or the second toner test image, and depending on an ambient condition sensor.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: July 18, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takehiko Suzuki, Akihiko Takeuchi, Toshihiko Ochiai, Motoi Katoh, Toshiaki Miyashiro, Takao Kume
  • Patent number: 6016418
    Abstract: An image forming apparatus includes an image bearing member for electrostatically bearing a toner image; a dielectric member movable along an endless path through a transfer position of the image bearing member; an electroconductive member in contact with the dielectric member at a side remote from the image bearing member, wherein the electroconductive member is supplied with a voltage having a polarity opposite from that of a charge polarity of the toner image to transfer the toner image from the image bearing member onto the dielectric member at the transfer position; wherein the electroconductive member is electrically grounded to generate an electric field for transferring the toner from the dielectric member to the image bearing member at the transfer position.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: January 18, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuaki Kabeya, Akihiko Takeuchi, Toshihiko Ochiai, Motoi Katoh, Toshiaki Miyashiro, Takehiko Suzuki, Takao Kume
  • Patent number: 5761571
    Abstract: An image forming apparatus has an image bearing member, a transfer material bearing member for bearing a transfer material onto which an image can be transferred from the image bearing member, an attract member for electrostatically attracting the transfer material to the transfer material bearing member, and a constant voltage control for effecting constant voltage control of the attract member with predetermined voltage. The total impedance of an attract circuit including the attract member and the constant voltage control means is 10.sup.6 .OMEGA. to 10.sup.10 .OMEGA..
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: June 2, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takehiko Suzuki, Toshihiko Ochiai, Toshiaki Miyashiro
  • Patent number: 5715506
    Abstract: An image forming apparatus has a recording medium bearing member bearing a recording medium thereon and rotatable, the recording medium bearing member having in the surface thereof a recess extending in the direction of the rotary shaft thereof, image formation being effected on the recording medium born on the recording medium bearing member, and a rotatable member abutted against the recording medium bearing member, the rotatable member being provided with a abutting portion abutted against the recording medium bearing member, and a regulating portion adapted to abut against the recording medium bearing member when the recess and the rotatable member become opposed to each other. Thus, the distance between the recess and the bearing portion, is regulated the rotatable member being movable between a first position in which the abutting portion abuts against the recording medium bearing member and a second position in which the regulating portion abuts against the recording medium bearing member.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: February 3, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiko Takeuchi, Toshihiko Ochiai, Motoi Kato, Toshiaki Miyashiro, Akira Ito, Nobuaki Kabeya, Takao Kume, Takehiko Suzuki
  • Patent number: 5678151
    Abstract: An image forming apparatus includes an image bearing member, an image forming means for forming a toner image on the image bearing member, a rotary member contacted with a surface of the image bearing member, a transfer member for transferring the toner image from the image bearing member to the rotary member, and a cleaning member for removing residual toner from the image bearing member. Wherein a longitudinal width of a contact area between the image bearing member and the rotary member is smaller than the length of the cleaning member.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: October 14, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Miyashiro, Akihiko Takeuchi, Toshihiko Ochiai, Motoi Kato, Takehiko Suzuki
  • Patent number: 5608505
    Abstract: An image forming apparatus includes an electrophotographic photosensitive member; a charger for charging the photosensitive member to form an electrostatic latent image on the photosensitive member; an exposure device for exposing the photosensitive member to image light; a developing device for developing the latent image with toner; a transfer member contactable to the photosensitive member at a transfer position, the transfer member comprising an electrically conductive base, a high resistance surface layer, and a low resistance or intermediate resistance conductive layer between the conductive base and the surface layer; and transfer voltage applying device for applying a transfer voltage to the transfer member; wherein Ws>Wt>Wp>W1 is satisfied, where Ws is a width of a photosensitive layer measured in a direction perpendicular to a movement direction of the photosensitive member, W1 is an image exposure width of the exposure device, Wp is a width of a transfer material usable with the image form
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: March 4, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiko Takeuchi, Toshihiko Ochiai, Motoi Katoh, Toshiaki Miyashiro, Takehiko Suzuki
  • Patent number: 5600423
    Abstract: An image forming apparatus has an image bearing member bearing images thereon and movable, and a transfer medium bearing member provided in pressure contact with the image bearing member and bearing a transfer medium thereon and rotatable. The transfer medium bearing member has a sheet member for bearing the transfer medium thereon, and an elastic layer supporting that area of the sheet member bearing the transfer medium thereon from the inside of the sheet member. A voltage is applied to the transfer medium bearing member to transfer the images on the image bearing member to the transfer medium born on the sheet member. The sheet member has an area not fixed to the elastic layer. The transfer medium bearing member is rotated with a potential difference created between the image bearing member and the sheet member before the operation of transferring the images on the image bearing member to the transfer medium born on the sheet member is started.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: February 4, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Miyashiro, Akihiko Takeuchi, Toshihiko Ochiai, Motoi Kato, Akira Ito, Nobuaki Kabeya, Takehiko Suzuki, Takao Kume
  • Patent number: 5543904
    Abstract: A fixating device has a first rotatable member in contact with an unfixated image borne on a recording medium, a second rotatable member forming a nip together with the second rotatable member, a first heater for heating the first rotatable member, a second heater for heating the second rotatable member, and power supply controlling means for controlling the supply of electric power to the first heater and the second heater. The power supply controlling means is adapted to control the supply of electric power so that when the electric power supplied to the first heater is Wa and the electric power supplied to the second heater is Wb and the ratio when the recording medium is nipped between and conveyed by the first rotatable member and the second rotatable member is Dp=Wa/Wb and the ratio during standby is Ds=Wa/Wb, there may be established Dp>Ds.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: August 6, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Motoi Kato, Akihiko Takeuchi, Toshihiko Ochiai, Toshiaki Miyashiro, Nobuaki Kabeya, Takehiko Suzuki, Takao Kume
  • Patent number: 5508796
    Abstract: The present invention provides an image forming apparatus with an image bearing member capable of rotating while bearing a toner image thereon, a transfer device for transferring the toner image from the image bearing member to a recording material at a transfer position, recording material bearing member capable of rotating while bearing the recording material thereon and adapted to convey the recording material to the transfer position, a pair of rotary members arranged at an upstream side of the recording material bearing member in a recording material conveying direction and adapted to pinch and convey the recording material, and a separation device for separating the recording material from the recording material bearing member at a separation position.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: April 16, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Sasame, Takao Aoki, Haruo Fujii, Toshihiko Ochiai, Motoi Kato, Tatsuya Kobayashi, Tetsuya Kobayashi, Toshiaki Miyashiro, Naoki Enomoto, Akihiko Uchiyama, Yoshiro Saito, Takehiko Suzuki, Yoichiro Maebashi
  • Patent number: 5390012
    Abstract: An image forming apparatus includes an image bearing member; an image forming device for forming a toner image on the image bearing member; a transfer material carrying member for carrying a transfer material, wherein the toner image is electrostatically transferred onto the transfer material carried on the transfer material carrying member, wherein the transfer material carrying member has a dielectric layer carrying the transfer material and a supporting member for supporting the transfer material through the dielectric layer, wherein a gap is provided between the dielectric layer and the supporting member. Alternatively disclosed is a transfer material carrying member formed of a support layer, an elastic layer on top of the support layer, an intermediate layer on top of the elastic layer, and a dielectric layer on top of the intermediate layer.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: February 14, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Miyashiro, Haruo Fujii, Toshihiko Ochiai