Patents Assigned to Canon
  • Patent number: 6395423
    Abstract: A secondary battery exhibiting a long cycle life and comprising a negative pole activating material made of lithium or zinc is provided, the battery at least having a negative pole made of lithium or zinc serving as the negative pole activating material, an electrolyte (electrolytic solution), a separator, a positive pole made of a positive pole activating material, a collecting electrode and a battery case, wherein at least the surface of the negative pole is covered with a film having a structure which allows ions relating to the battery reactions to pass through. Since growth of dendrite of lithium or zinc at the time of the charge can be prevented, short circuit between the negative pole and the positive pole can be prevented. Therefore, the charge/discharge cycle life can significantly be lengthened.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Soichiro Kawakami, Shinya Mishina, Naoya Kobayashi
  • Patent number: 6396540
    Abstract: A camera system includes a camera body and an interchangeable lens attachable to and detachable from the camera body. Within the camera body, an image signal is generated representing a picture. A prescribed signal component is extracted from the image signal, and an evaluation value relating to an imaged state of said picture is generated. For example, a focal-point evaluation value is extracted by an AF signal processing circuit from an image signal corresponding to a distance measurement frame. The distance measurement frame is set by a distance measurement frame controller by detecting the photographers line-of-sight. These evaluation values are then transmitted from the camera body to the lens assembly. In this manner, for example, a zoom lens and a focusing lens may then be controlled by the lens assembly in response to the evaluation value.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroto Ohkawara
  • Patent number: 6394590
    Abstract: A liquid container for containing printing liquid for supplying to a recording head for an ink jet recording apparatus, the container includes a first chamber containing a negative pressure producing material and having a printing liquid supply port connectable to a recording head for allowing printing liquid to be supplied to the recording head and an air vent for allowing ambient air to enter the container, and a second chamber which provides a printing liquid reservoir for the first chamber and is substantially closed apart from a communication port communicating with the first chamber to allow the printing liquid to flow into the first chamber and to allow air to be introduced into the second chamber from the first chamber. The second chamber comprises a replaceable printing liquid chamber.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Noribumi Koitabashi, Masami Ikeda, Sadayuki Sugama, Naohito Asai, Hiromitsu Hirabayashi, Tsutomu Abe, Hiroshi Sato, Shigeyasu Nagoshi, Eiichiro Shimizu, Masahiko Higuma, Yuji Akiyama, Hitoshi Sugimoto, Miyuki Matsubara, Shinichi Sato, Fumihiro Gotoh, Masaya Uetsuki
  • Patent number: 6394578
    Abstract: Disclosed herein is a process for producing a color filter, comprising the step of dividing a coloring region on a substrate into plural scanning regions and successively coloring the respective scanning regions by an ink-jet system, wherein the scanning regions have a portion overlapped each other.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Akahira, Satoshi Wada, Hiromitsu Yamaguchi, Takuhiro Ohgushi
  • Patent number: 6396626
    Abstract: The antireflection film of the present invention comprises an alternately multi-layered film of 10 layers formed on a base member and having antireflection characteristics in two wavelength regions including a first wavelength (&lgr;1) of 248 nm and a second wavelength (&lgr;2) of 633 nm as central wavelengths, respectively, the multi-layered film of 10 layers comprising: low-refractive index layers arranged at odd-numbered positions from a side opposite to the base member and having a refractive index of 1.45 to 1.52 at the first wavelength (&lgr;1); and high-refractive index layers arranged at even-numbered positions from the side opposite to the base member and having a refractive index of 1.65 to 1.80 at the first wavelength (&lgr;1), wherein layers arranged at the first, second and third positions from the side opposite to the base member each have an optical thickness ranging from 0.21&lgr;1 to 0.28&lgr;1.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Minoru Otani, Kenji Ando, Yasuyuki Suzuki, Ryuji Biro, Hidehiro Kanazawa
  • Patent number: 6396566
    Abstract: A stage system includes a stage mechanism having a movable stage and a stage supporting member for carrying the movable stage thereon, and a countermass mechanism having a movable countermass and a countermass supporting member for carrying the countermass thereon, wherein the stage supporting member and the countermass supporting member are supported separately or with vibration isolated.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuichi Ebinuma, Makoto Mizuno
  • Patent number: 6396207
    Abstract: An image display apparatus is provided with an external housing constituted by members including first and second substrates positioned with a gap therebetween, an electron source positioned on the first substrate in the external housing, and a fluorescent film and an accelerating electrode provided on the second substrate. A first getter is positioned in the image display area in the external housing. And a second getter is so provided as to be insulated from the electron source and the accelerating electrode and as to surround the first getter.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsutoshi Hasegawa, Ihachiro Gofuku, Yasuhiro Hamamoto, Kazuya Shigeoka, Yutaka Arai
  • Patent number: 6397025
    Abstract: A remanufacturing method of remanufacturing a process cartridge includes: (a) a step of preparing a used process cartridge; (b) a container separating step of separating the process cartridge into a toner developing container and a developing container by disengaging pins from the process cartridge, (c) a developing roller dismounting step of dismounting a developing roller from the toner developing container separated by the container separating step; (d) a developing blade dismounting step of dismounting a developing blade from the toner developing container separated by the container separating step; (e) a cut-away portion sealing step of sealing with a seal a cut-away portion of the toner developer container; (f) a developing blade mounting step of mounting a developing blade on the toner developer container; (g) a developing roller mounting step of mounting the developing roller on the toner developer container; (h) a toner refilling step of refilling the toner into a toner accommodating portion
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Higeta, Yoshiyuki Kakumi
  • Patent number: 6397032
    Abstract: In accordance with the present invention, an image forming apparatus includes an image bearing member for bearing an electrostatic latent image, a charging device for charging the surface of the image bearing member, an electrostatic latent image forming device for forming the electrostatic latent image on the surface of the image bearing member charged by the charging device, a developing device, which includes a developer bearing member for bearing a single component developer, for performing development by bringing the single component developer into contact with the electrostatic latent image to form a visible image, a transfer device for electrostatically transferring the visible image to a transfer member, and a fixing device for fixing the electrostatically transferred visible image on the transfer member. The developer bearing member includes at least a conductive core bar, an electron-conductive layer composed of an elastic body, and an ion-conductive layer.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhiro Sakaizawa, Yukihiro Ohzeki, Manami Sekiguchi
  • Patent number: 6394597
    Abstract: Disclosed herein is an ink-jet printing cloth which is dyed with inks containing a reactive dye and is composed mainly of silk fibers, wherein the cloth contains an alkaline substance in an amount of 0.01 to 0.8% by weight based on the dry weight of the cloth.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Koike, Masahiro Haruta, Yasushi Miura, Koromo Shirota, Aya Takaide, Tomoya Yamamoto, Yoshiko Miyashita, Mariko Suzuki
  • Patent number: 6394570
    Abstract: An ink-jet recording method includes a step of applying each of a plurality of ejection signals to an ejecting device. Each of the ejecting signals is generated in such a manner that at least one of a quantity of energy to be fed to the ejecting device per unit time and a total quantity of energy differs from the other one. It is preferable that when a plurality of ink droplets are shot onto a recording medium at the substantially same location on the latter, an ejection signal for allowing at least one of a quantity of energy to be fed to the ejecting device and a total quantity of energy to be maximized is selected from a plurality of ejection signals, and subsequently, it is applied to the ejecting device.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Genji Inada
  • Patent number: 6395441
    Abstract: The present invention provides an electrophotographic photosensitive member having a surface layer containing diorganopolysiloxane having, as substituents, a perfluoro group, and a group having a substituted or unsubstituted polystyrene chain, a closed terminal and a degree of polymerization of 3 or more. The present invention also provides a process cartridge having the electrophotographic photosensitive member, and an electrophotographic apparatus.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirotoshi Uesugi, Hideki Anayama
  • Patent number: 6396858
    Abstract: A laser driving method is adapted for driving a plurality of laser emitting devices. A first current to be supplied to each of the plurality of laser emitting devices is always generated. A plurality of second currents controlled according to a control signal supplied from the outside are generated when necessary. The plurality of second currents are supplied to the respective laser emitting devices under supply of the respective first currents, thereby making the laser emitting devices emit respective laser beams. The plurality of laser emitting devices are caused to emit the laser beams in time division at predetermined timing to detect each of emitted light amounts by one laser monitor. Adjustment is made to at least one of the first current and the second current supplied to each of the laser emitting devices according to a plurality of detected light amounts detected.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Kawakami, Tomobumi Nakayama, Isamu Sato, Tatsuhito Kataoka, Katsuhide Koga, Yukio Yokoyama
  • Patent number: 6394613
    Abstract: An anti-fogging and anti-reflection optical article included a substrate, a first water-absorbing film provided on the substrate, a thin film of high refractive index provided on the first water-absorbing film, and a second water-absorbing film provided on the thin film of high refractive index. The first water-absorbing film contains a water-absorbing polymer and is provided on the substrate. The thin film of high refractive index includes a polycondensation product of a hydrolysate of a metal alkoxide, and the second water-absorbing film includes a water-absorbing polymer.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideyuki Hatakeyama, Hideo Ukuda
  • Patent number: 6397018
    Abstract: A developing device includes a developer container which is mountable to an electrophotographic image forming apparatus main body, contains a developer for developing an electrostatic latent image formed on an electrophotographic photosensitive member, and includes a developer bearing member for carrying the developer to the electrophotographic photosensitive member, and a plurality of developer remaining amount detectors for successively detecting the remaining amount of developer within the developer container, wherein regions detected by the plurality of developer remaining amount detectors are overlapped with each other, and in the overlapped regions, a detected value by a previous developer remaining amount detector is changed over to a detected value by a succeeding developer remaining amount detector, and the apparatus main body detects the detected value to detect the remaining amount of developer.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Matsumoto, Kazushige Sakurai, Isao Ikemoto, Kazushi Watanabe, Toshiyuki Karakama
  • Patent number: 6396074
    Abstract: The gain correction image is composed of a grid-free image regardless of the presence or absence of the grid or the kind thereof. The gain correction images are stored in the image memory unit, and, under the control of the pre-process unit and according to the result of the grid detection means, reference is made to the image process parameter table stored in the image process parameter memory unit and the matching gain correction image is downloaded from the image memory unit.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Osamu Tsujii
  • Publication number: 20020061198
    Abstract: The present invention relates to animage forming apparatus which has an image bearing body, a transferring portion for transferring an unfixed image on the image bearing body onto a recording material while conveying the recording material, a fixing portion for fixing the unfixed image onto the recording material while conveying the recording material having the unfixed image transferred in the transferring portion, flexure detecting device for detecting flexure of the recording material between the transferring portion and the fixing portion, recording material detecting device for detecting presence/absence of the recording material on a downstream side of the fixing portion with respect to a conveying direction of the recording material, and control device for controlling a convey velocity of the recording material in the fixing portion on the basis of a time from the detection of the recording material detected by the recording material detecting device to the detection of the flexure of the recording mat
    Type: Application
    Filed: January 22, 2002
    Publication date: May 23, 2002
    Applicant: Canon Kabushiki Kaisha
    Inventors: Takao Sameshima, Shoji Maruyama
  • Patent number: 6392698
    Abstract: An image sensing system configured with a camera head-detachable image sensing apparatus and an image processing apparatus connected via a cable. The image processing apparatus generates a reference clock signal, and transmits it to the image sensing apparatus via the cable. The image sensing apparatus generates horizontal and vertical synchronizing signals on the basis of the received reference clock signal, and transmits the generated synchronizing signals to the image processing apparatus as a composite synchronizing signal. The image processing apparatus separates the composite synchronizing signal into the vertical and horizontal synchronizing signals, then transmits a control signal for controlling the image sensing apparatus during the vertical blanking period. The horizontal and vertical synchronizing signals are also provided to a VIDS circuit of the image sensing apparatus, and the control signal is multiplexed to an image signal during a vertical blanking period by the VIDS circuit and an adder.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: May 21, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshihiko Yokoyama
  • Patent number: 6391492
    Abstract: A secondary battery exhibiting a long cycle life and comprising a negative pole activating material made of lithium or zinc is provided, the battery at least having a negative pole made of lithium or zinc serving as the negative pole activating material, an electrolyte (electrolytic solution), a separator, a positive pole made of a positive pole activating material, a collecting electrode and a battery case, wherein at least the surface of the negative pole is covered with a film having a structure which allows ions relating to the battery reactions to pass through. Since growth of dendrites of lithium or zinc at the time of charge can be prevented, short circuiting between the negative pole and the positive pole can be prevented. Therefore, the charge/discharge cycle life can significantly be lengthened.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 21, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Soichiro Kawakami, Shinya Mishina, Naoya Kobayashi
  • Patent number: D457886
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: May 28, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Naofumi Sekine