Patents Represented by Attorney, Agent or Law Firm Fitzpatrick, Cella, Harper & Scinto
  • Patent number: 8342517
    Abstract: The present invention provides a sheet conveying apparatus and an image forming apparatus capable of preventing occurrence of skew feeding when correcting sheet lateral deviation. A pair of lateral-shift correcting rollers 305 to correct positional deviation in the sheet width direction based on positional deviation quantity detected by a lateral-registration detection sensor 204c is controlled after controlling a skew feeding correcting roller 203 so as to correct sheet skew feeding based on skew-feeding quantity at a sheet leading edge detected by skew-feeding detection sensors 204a and 204b. Then, skew-feeding quantity of the sheet leading edge to be detected by the skew-feeding detection sensors 204a and 204b for correcting skew feeding of the next sheet is adjusted with skew-feeding quantity at the sheet trailing edge detected by the lateral-registration detection sensor 204c after positional deviation in the sheet width direction is corrected.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidehiko Kinoshita, Masaaki Moriya, Atsushi Nakagawa, Mitsuhiro Sugeta, Noriaki Adachi, Satoshi Atarashi
  • Patent number: 8345339
    Abstract: The optical deflector includes a deflector, a vibration detector, a driving signal generator, a modulation timing signal generator, and a deflection detector. The deflector has a vibrational system having a movable body with a light deflecting member, and deflects light from a light source by the movable body. The vibration detector detects the vibration condition of the vibrational system of the deflector. The driving signal generator generates a driving signal for driving the vibrational system of the deflector. The modulation timing signal generator generates a modulation timing signal as the reference time for regulating the amount of light from the light source. The deflection detector detects the deflection condition of light deflected by the deflector.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Kandori, Masao Majima, Kazunari Fujii
  • Patent number: 8342622
    Abstract: In a continuous liquid ejection apparatus, when pressurizing ink with a pump and initiating ejection, the problem of a stable ink column and droplets not being formed if ink is ejected in a low ink pressure state and large droplets or droplets with unstable flight directions being formed is solved. The space where droplets fly is sealed in order to raise the pressure of ink inside a liquid chamber communicating with a nozzle up to a pressure suitable for droplet-forming condition, while the pressure of gas in the sealed space is raised corresponding to the rise in pressure of the liquid to suppress ejection from the nozzle. After the pressure of the ink is raised to pressure suitable for droplet-forming condition, the sealed space is opened to the atmosphere and ink is ejected all at once.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsunenori Soma, Junya Kawase
  • Patent number: 8345321
    Abstract: In processing documents, a scan-all-first mode is available, in which a set of documents is input part by part until all documents have been input, and, after completion of the input process, an output process is performed as a single job for the set of documents. In an intermediate state during the input process in which the set of documents is input part by part in the scan-all-first mode, a user is allowed to make settings of processing conditions associated with, for example, insertion of a sheet or insertion of a form image. In the job processed in the scan-all-first mode, insertion of the sheet or insertion of a composite image including the form image is performed according to the settings made in the intermediate state.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Keiju Kuboki
  • Patent number: 8342658
    Abstract: An ink jet print head is provided which can improve throughput by increasing an ink ejection frequency and prevent crosstalk among a plurality of heat application portions, realizing a capability of printing high-quality images at high speed. An opening size of the supply ports in a direction perpendicular to the array direction of the heat application portions is made greater than the length in the direction of electrothermal conversion elements. The supply ports are arranged along the array direction so that they adjoin the heat application portions in the array direction.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ken Tsuchii, Masataka Sakurai, Yoshiyuki Nakagawa, Akiko Saito
  • Patent number: 8343699
    Abstract: Provided is an electrophotographic photosensitive member having a conductive support, an intermediate layer provided on the conductive support, and a photosensitive layer provided on the intermediate layer in which the intermediate layer contains a polyolefin resin containing a specific component at a specific mass ratio, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideaki Nagasaka, Kunihiko Sekido, Michiyo Sekiya, Shinji Takagi
  • Patent number: 8345309
    Abstract: An image processing apparatus forming an image with color toners used for full color printing and a particular toner is provided. The apparatus comprises a storage storing image data and attribute information indicating an attribute of each pixel in the data; a compression component compressing the information; a change component changing attribute information except particular toner information for forming an image with the particular toner of the attribute information, so that a data amount of the compressed attribute information does not exceed the storage capacity, when a data amount of the compressed attribute information exceeds the storage capacity; a component storing the attribute information changed by the change component into the storage; and a component forming a full color image and a particular toner image by image processing using the attribute information in the storage for the image data in the storage.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshimitsu Nakano
  • Patent number: 8345137
    Abstract: A solid-state image pickup apparatus includes a pixel area in which pixels each having at least a photoelectric conversion unit and an amplification transistor for amplifying and outputting a signal of the photoelectric conversion unit are two-dimensionally arranged in horizontal and vertical directions, wherein a power supply wiring, which extends in a vertical direction along pixel boundaries of horizontal and vertical directions while meandering, is arranged on one of two pixel lines adjoining to each other in the horizontal direction in the pixel area, and the power supply wiring is connected to one of a source and a drain of the amplification transistor on each of the two pixel lines. Thus, it is possible to provide a high-sensitivity and high-image-quality amplified solid-state image pickup apparatus in which a difference of sensitivities at one-line intervals is small.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mahito Shinohara, Masaaki Iwane, Yukihiro Kuroda
  • Patent number: 8340439
    Abstract: In an image conversion method, a value which reflects the mutual relationship between the classes of pixel patterns each formed from a pixel classified as one of a plurality of classes and peripheral pixels is set as a converted value corresponding to each of the plurality of classes, a pixel of interest is sequentially selected from the input image, and a pixel pattern formed from the selected pixel of interest and a predetermined number of pixels around it is classified as one of the plurality of classes in accordance with a neighboring pattern obtained based on the relationship between the value of the pixel of interest and the values of peripheral pixels located at predetermined relative positions with respect to the pixel of interest. The value of the pixel of interest is converted into a converted value set for a class to which the pixel of interest has been classified.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Mitarai, Masakazu Matsugu, Katsuhiko Mori
  • Patent number: 8340553
    Abstract: An image forming apparatus includes a photosensitive member; a corona charger, provided with an opening opposing the photosensitive member, for electrically charging the photosensitive member; image forming means for forming an image on the photosensitive member electrically charged by the corona charger; a sheet-like member for covering and uncovering the opening of the corona charger with respect to the photosensitive member; and control means for controlling a rotating operation of the photosensitive member so as to be started at a predetermined time in a period from start of an opening operation of the sheet-like member for starting image formation to end of the opening operation of the sheet-like member.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyuki Kidaka
  • Patent number: 8340811
    Abstract: A substrate supporting apparatus includes a pallet on which a substrate is mounted, a pallet double-end holding mechanism holding both ends of the pallet in a diameter direction while the pallet is in a vertical posture, a pallet center holding mechanism rotatably holding a center section of the pallet, and a moving mechanism moving an apparatus body, wherein the pallet double-end holding mechanism is a mechanism that grips both ends of the pallet in the diameter direction from both sides of a thickness direction, the pallet double-end holding mechanism holds the pallet during movement, the pallet is held by both of the holding mechanisms during delivery from the pallet double-end holding mechanism to the pallet center holding mechanism, and the pallet center holding mechanism rotatably holds the center section of the pallet and holding by the pallet double-end holding mechanism is released during substrate processing.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: December 25, 2012
    Assignee: Canon Anelva Corporation
    Inventors: Majima Kazuyuki, Goshokubo Gen
  • Patent number: 8339619
    Abstract: This invention provides an image processing system and image processing method, which can acquire a document such as a paper document or the like as data of a format that allows easy re-use and re-edit processes. Image information is acquired by scanning a document, and its features are recognized. The image information is converted into character codes, vector data, or a predetermined image format in accordance with the recognized features. In this case, parameters used upon recognizing the features of the image information are variably set, and the operations of the character process, vectorization, and image conversion are controlled in accordance with the set parameters.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Reiji Misawa
  • Patent number: 8339664
    Abstract: A raster image processor (RIP) can process data for one page for each of a plurality of small areas, and handles each individual small area as a display list. Each individual display list holds information required to determine a rendering resolution. The RIP renders a small area including a text object with a high resolution, and a small area which does not include any text object with a low resolution. The RIP renders the respective small areas with the designated resolutions, and temporarily holds the rendering results in a memory for respective small areas. Upon generating a page image, the RIP directly transfers the high-resolution rendering result to a page memory. The RIP transfers the low-resolution rendering result to the page memory with applying an enlarging pixel process to the rendering result.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahito Yamazaki
  • Patent number: 8340563
    Abstract: A sheet conveying apparatus including: a sheet conveying path through which a sheet is conveyed; a sensor unit configured to output a signal according to a characteristic of the sheet which is conveyed through the sheet conveying path; a pressure unit configured to press the sheet against the sensor unit; and a moving member protruding into the sheet conveying path, the moving member being moved by being pushed by the sheet passing through the sheet conveying path, wherein the pressure unit is interlocked with the moving member so that the sheet is pressed by the pressure unit against the sensor unit when the moving member is not pushed by the sheet, and a pressure force on the sheet applied by the pressure unit is released or reduced when the moving member is pushed by the sheet.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keita Nakajima, Takashi Kuwata
  • Patent number: 8337712
    Abstract: A method for forming an etching mask comprises irradiating a focused ion beam onto a surface of a substrate and forming an etching mask used for oblique etching including an ion containing portion in the irradiated region. A method for fabricating a three-dimensional structure comprises preparing a substrate, irradiating a focused ion beam onto a surface of the substrate and forming an etching mask including an ion-containing portion in the irradiated region, and dry-etching the substrate from a diagonal direction using the etching mask and forming a plurality of holes.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Tamamori, Masahiko Okunuki, Shinan Wang, Taiko Motoi, Haruhito Ono, Toshiaki Aiba
  • Patent number: 8339629
    Abstract: To prevent a situation that an external device cannot confirm that a data processing device cannot execute data reception, the data processing device first notifies the external device of a first data size capable of being received by the data processing device and then notifies the external device a second data size larger than the first data size.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobuhiko Maki
  • Patent number: 8341461
    Abstract: There is provided an image forming apparatus which adopts a distributed control system and increases the error detection accuracy of each control unit. To accomplish this, the image forming apparatus includes a master control unit that controls the overall image forming apparatus, a plurality of sub-master control units that control a plurality of functions for performing image formation, and a plurality of slave control units that control loads for implementing a plurality of functions. The master control unit determines a diagnosis path for performing a diagnosis process for an error using the signal lines and a connection bridge connected to the respective control units. The master control unit performs the diagnosis process for an error in accordance with the determined diagnosis path.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Otani, Shigeo Hata, Akihiko Sakai, Shoji Takeda, Satoru Yamamoto, Keita Takahashi, Hirotaka Seki
  • Patent number: 8341129
    Abstract: A structured document is coded as a bit stream. The structured document can be described in Extensible Markup Language (XML). The structured document can be decoded to access a subpart of the document. Hierarchized events included in the structured document are coded as corresponding events using at least one encoding table, which is updated during the coding. Hierarchized events involved in an update of the at least one encoding table are determined. Marking information is associated with the coded events corresponding to the hierarchized events determined to be involved in the update of the at least one encoding table.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Franck Denoual, Hervé Ruellan
  • Patent number: 8339679
    Abstract: A region of a latent image and that of a background image in a first dot image are converted into binary data so as to have different binary data, and a region of the latent image in the binary data is converted into dot data by expressing that region as dots. A second dot image is converted into outline data by removing dots of a region corresponding to the region of the latent image to form an outline region. The converted dot data and converted outline data are composited to generate a dot image including the outline data as a latent image and the dot data as a background image.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takaya Tsujii
  • Patent number: D673211
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hironori Oishi