Patents by Inventor Masahiko Ogawa

Masahiko Ogawa 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).

  • Publication number: 20090009545
    Abstract: An object of this invention is to provide a printhead tolerant of switching noise occurred when concurrently driving plural printing elements, a head cartridge using the printhead, and a printing apparatus. To achieve this object, a printhead includes plural printing elements and plural driving elements for driving the plural printing elements, and prints by these printing elements. The printhead includes the following arrangement. More specifically, the printhead includes a shift register which receives print data in synchronism with a clock signal, and a latch circuit which latches the print data input to the shift register in synchronism with a latch signal. The printhead further includes a restriction circuit which restricts input of the print data and clock signal to the shift register and input of the latch signal to the latch circuit in synchronism with input of an enable signal for driving the plural driving elements.
    Type: Application
    Filed: December 11, 2007
    Publication date: January 8, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yasunori Takei, Kimiyuki Hayasaki, Masahiko Ogawa, Yuichiro Akama
  • Patent number: 7459213
    Abstract: A composition comprising the following components: 100 parts by weight of an organopolysiloxane (A), 0.1 to 30 parts by weight of a crosslinking agent (B), 50 to 1,000 parts by weight of a polyvinyl alcohol homopolymer or copolymer (C), 0 to 5 parts by weight, as an active ingredient, of a catalyst (D), 100 to 100,000 parts by weight of water (E), and 0.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: December 2, 2008
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Kenji Yamamoto, Masahiko Ogawa, Tsutomu Nakajima
  • Patent number: 7398135
    Abstract: A method for simulating the behavior of a flexible medium which is conveyed along a conveying path constructed of a pair of conveyor rollers includes the steps of dividing the surfaces of the conveyor rollers into a contact region and a non-contact region and setting a first peripheral speed and a second peripheral speed for the contact region and the non-contact region, respectively, and performing a simulation under a condition that a conveying force corresponding to the difference between the second peripheral speed and a moving speed of the flexible medium is applied to the flexible medium when the flexible medium reaches the non-contact region of the conveyor rollers and a condition that the flexible medium is conveyed at the first peripheral speed when the flexible medium reaches the contact region of the conveyor rollers.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: July 8, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiko Ogawa, Tatsuro Kawakami
  • Publication number: 20080064814
    Abstract: Composition comprising: 100 parts by weight of an organopolysiloxane (A), 0.1 to 30 parts by weight of a crosslinking agent (B), 50 to 1,000 parts by weight of a polyvinyl alcohol homopolymer or copolymer(C), 0 to 5 parts by weight, as an active ingredient, of a catalyst (D), 100 to 100,000 parts by weight of water (E), and. 0.1 to 100 parts by weight of a surfactant (F), wherein component (A) is an organopolysiloxane (A3) having at least two alkenyl groups and represented by the following formula (3): wherein each R1 may be same or different and is a group having 1 to 20 carbon atoms selected from the group consisting of alkyl groups, alicyclic groups, and aryl groups, whose hydrogen atoms bonded to the carbon atoms may partly be replaced with a halogen atom or a cyano group, R2 is an alkenyl group and X3is the group represented by the following formula: wherein a3, b3, c3, d3 and e3 are such numbers that the organopolysiloxane (A3) has a viscosity at 25 degrees C. of from 0.
    Type: Application
    Filed: October 29, 2007
    Publication date: March 13, 2008
    Inventors: Kenji Yamamoto, Masahiko Ogawa, Tsutomu Nakajima
  • Patent number: 7246878
    Abstract: A method of generating ejection pattern data for a plurality of nozzles for use in selectively ejecting functional liquid droplets from the nozzles is to draw on ore more one chip-forming area on a workpiece. The method includes a pixel-setting step of setting pixel information concerning an array of pixels in the chip-forming areas, a chip-setting step of setting chip information concerning an array of the chip-forming areas on the workpiece, a nozzle-setting step of setting nozzle information concerning an array of the nozzles, and a data-generating step of generating the ejection pattern data for the nozzles from the pixel information, the chip information, and the nozzle information, based on a positional relationship between the workpiece and the functional liquid droplet ejection head. The ejection pattern data are easily and quickly generated for the nozzles arranged in an array in the plurality of functional liquid droplet ejection heads.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: July 24, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Masahiko Ogawa, Tsuyoshi Kato
  • Publication number: 20070153036
    Abstract: A recording head circuit is configured to drive a plurality of recording elements by dividing the plurality of recording elements into a plurality of blocks. The circuit delays not only heat signals, which are used to drive the recording elements in each of the blocks, but also block signals. Consequently, noises are prevented from appearing due to overlapping of signals.
    Type: Application
    Filed: December 11, 2006
    Publication date: July 5, 2007
    Applicant: Canon Kabushiki Kaisha
    Inventors: Yuichiro Akama, Kimiyuki Hayasaki, Masahiko Ogawa, Yasunori Takei
  • Publication number: 20070032596
    Abstract: Composition comprising: 100 parts by weight of an organopolysiloxane (A), 0.1 to 30 parts by weight of a crosslinking agent (B), 50 to 1,000 parts by weight of a polyvinyl alcohol homopolymer or copolymer (C), 0 to 5 parts by weight, as an active ingredient, of a catalyst (D), 100 to 100,000 parts by weight of water (E), and 0.1 to 100 parts by weight of a surfactant (F), wherein component (A) is an organopolysiloxane (A3) having at least two alkenyl groups and represented by the following formula (3): wherein each R1 may be same or different and is a group having 1 to 20 carbon atoms selected from the group consisting of alkyl groups, alicyclic groups, and aryl groups, whose hydrogen atoms bonded to the carbon atoms may partly be replaced with a halogen atom or a cyano group, R2 is an alkenyl group and X3is the group represented by the following formula: wherein a3, b3, c3, d3 and e3 are such numbers that the organopolysiloxane (A3) has a viscosity at 25 degrees C of from 0.
    Type: Application
    Filed: October 4, 2006
    Publication date: February 8, 2007
    Inventors: Kenji Yamamoto, Masahiko Ogawa, Tsutomu Nakajima
  • Patent number: 7128977
    Abstract: The addition of silicone rubber fine particles to a composition comprising an organopolysiloxane having at least two alkenyl groups, an organohydrogenpolysiloxane having at least three SiH groups and a catalyst yields a composition which when coated onto any substrate, forms a coating whose surface is extremely reduced in gloss and highly uniform. Using the coating of the composition as a release sheet, synthetic resin sheets having matte surfaces can be readily manufactured.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: October 31, 2006
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Kenji Yamamoto, Masahiko Ogawa
  • Patent number: 7044986
    Abstract: Hair dye compositions comprise (A) ammonia or an ammonium salt, (B) a carbonate (other than an ammonium salt), (C) a transition metal salt, and (D) a chelating agent, and have a pH of from 8.5 to 12. They do not give off an intensely irritating odor and have low irritating property, can change hair into a lighter tone in a short time or can dye hair well in a color ranging from a light color to a deep color, and moreover, assure good retention of the thus-obtained tone or color.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: May 16, 2006
    Assignee: Kao Corporation
    Inventors: Masahiko Ogawa, Takashi Hori
  • Publication number: 20060089427
    Abstract: A paper treating agent comprising 100 parts by mass of organopolysiloxane (A), from 100 to 100,000 parts by mass of water (E), and 0.1 to 100 parts by mass of a surfactant (F), characterized in that the agent further comprises 50 to 1,000 parts by mass of a cellulosic resin (C), wherein 0.5 to 2.5 hydroxyl groups per glucose unit of said cellulosic resin are etherized or esterified, and a viscosity of an aqueous 2% solution of said cellulosic resin is from 2 to 100 mpa.s.
    Type: Application
    Filed: October 21, 2005
    Publication date: April 27, 2006
    Inventors: Kenji Yamamoto, Masahiko Ogawa
  • Patent number: 7029754
    Abstract: A hiding layer-forming silicone composition comprising (A) a diorganopolysiloxane comprising structural units of formula (1) and having an average degree of polymerization of at least 50, wherein R1 is alkyl or aryl, and R2 is alkyl, aryl, alkenyl, alkoxy, alkoxyalkoxy, hydroxyl or epoxy, (B) an organopolysiloxane comprising structural units of formulae (2) and (3): (R1—)n(R2—)3?nSi—O—??(2) wherein R1 and R2 are as defined above, n is an integer of 1 to 3, (C) an inorganic powder opacifier, (D) a curing catalyst, and (E) an organic solvent is effectively curable and capable of forming a hiding layer which temporarily adheres well to various substrates of paper, synthetic paper and plastic film while it remains scratchable.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: April 18, 2006
    Assignee: Shin-Etsu Chemical Co.,Ltd.
    Inventors: Kenji Yamamoto, Katsuma Baba, Masahiko Ogawa
  • Patent number: 7029081
    Abstract: There is disclosed a head substrate of a printing head detachably mounted on a printer main body, comprising plural external connection terminals individually receiving, from the exterior, a binary logic signal corresponding to whether or not to execute a recording operation, a recording image signal and a clock signal, recording execution means for executing the recording operation according to the recording image signal and the clock signal entered through the external connection terminals, in case the binary logic signal is in a first state, data memory means for and data readout, and memory access means for recognizing the binary logic signal in a second state as an access permission signal and executing the memory access to the data memory means at a timing corresponding to the clock signal when the logic signal is a second state.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: April 18, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Imanaka, Masahiko Ogawa, Ichiro Saito
  • Publication number: 20060077215
    Abstract: There is disclosed a head substrate of a printing head detachably mounted on a printer main body, comprising plural external connection terminals individually receiving, from the exterior, a binary logic signal corresponding to whether or not to execute a recording operation, a recording image signal and a clock signal, recording execution means for executing the recording operation according to the recording image signal and the clock signal entered through the external connection terminals, in case the binary logic signal is in a first state, data memory means for and data readout, and memory access means for recognizing the binary logic signal in a second state as an access permission signal and executing the memory access to the data memory means at a timing corresponding to the clock signal when the logic signal is a second state.
    Type: Application
    Filed: September 14, 2005
    Publication date: April 13, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yoshiyuki Imanaka, Masahiko Ogawa, Ichiro Saito
  • Patent number: 7016126
    Abstract: Disclosed is a simple and compact optical element holding system in a projection optical system which enables correction of astigmatism without causing comatic aberration. The holding system includes a relative angle adjusting system for tilting one of at least two optical elements with respect to an optical axis, and a tilt angle adjusting system for tilting the at least two optical elements integrally, by the same amount as and in an opposite direction to the tilt direction of the relative angle adjusting system, with respect to the optical axis and separately from the relative angle adjusting system.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: March 21, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiko Ogawa
  • Patent number: 6948789
    Abstract: There is disclosed a head substrate of a printing head detachably mounted on a printer main body, comprising plural external connection terminals individually receiving, from the exterior, a binary logic signal corresponding to whether or not to execute a recording operation, a recording image signal and a clock signal, recording execution means for executing the recording operation according to the recording image signal and the clock signal entered through the external connection terminals, in case the binary logic signal is in a first state, data memory means for and data readout, and memory access means for recognizing the binary logic signal in a second state as an access permission signal and executing the memory access to the data memory means at a timing corresponding to the clock signal when the logic signal is a second state.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: September 27, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Imanaka, Masahiko Ogawa, Ichiro Saito
  • Publication number: 20050128246
    Abstract: A method of generating ejection pattern data for a plurality of nozzles for use in selectively ejecting functional liquid droplets from the nozzles is to draw on ore more one chip-forming area on a workpiece. The method includes a pixel-setting step of setting pixel information concerning an array of pixels in the chip-forming areas, a chip-setting step of setting chip information concerning an array of the chip-forming areas on the workpiece, a nozzle-setting step of setting nozzle information concerning an array of the nozzles, and a data-generating step of generating the ejection pattern data for the nozzles from the pixel information, the chip information, and the nozzle information, based on a positional relationship between the workpiece and the functional liquid droplet ejection head. The ejection pattern data are easily and quickly generated for the nozzles arranged in an array in the plurality of functional liquid droplet ejection heads.
    Type: Application
    Filed: January 27, 2005
    Publication date: June 16, 2005
    Applicant: Seiko Epson Corporation
    Inventors: Masahiko Ogawa, Tsuyoshi Kato
  • Patent number: 6905796
    Abstract: A lithium secondary battery has high capacity and excellent current characteristics. The lithium battery comprises of a positive electrode, a negative electrode and an electrolyte; the negative electrode comprising Al2O3 particles not relating to the charge-and discharge reactions of the battery. The presence of the ceramics particles in the electrode leads to a decrease in the internal resistance of the battery because of the enhancement of ion conductivity in the electrode, resulting in higher capacity at high rate discharge of the lithium secondary battery.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: June 14, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akiko Ishida, Ken Nishimura, Masahiko Ogawa, Nobuo Eda, Masaki Kitagawa, Tetsuhisa Sakai
  • Patent number: 6871943
    Abstract: A head unit for carrying out operations for connecting and disconnecting cables and tubes to and from a plurality of functional liquid droplet ejection heads has a wiring connection assembly carried on a carriage and having a plurality of wiring connectors to be connected to main cables and a plurality of separate cables having one end thereof connected to the respective functional liquid droplet ejection heads and an opposite end thereof connected to the respective wiring connectors, and a piping connection assembly having a plurality of piping joints to be connected to main pipes and a plurality of separate pipes having one end thereof connected to respective functional liquid droplet ejection heads and opposite end thereof connected to respective piping joints.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: March 29, 2005
    Assignee: Seiko Epson Corporation
    Inventor: Masahiko Ogawa
  • Patent number: 6863834
    Abstract: A method for manufacturing a liquid ejecting head, in which liquid flow paths are defined by combining an element substrate with a nozzle member, comprises a step for preparing a material common to the element substrate as a base material of the nozzle member, a step for forming etching mask layers on first and second surfaces of the base material of the nozzle member, a step for forming a recessed portion in the second surface of the base material by patterning the mask layer on the second surface and effecting etching via the mask layer of the second surface, and a step for forming the nozzle grooves in the base material and communicating the recessed portion with the nozzle grooves by patterning the mask layer on the first surface of the base material and effecting etching via the mask layers of the first and second surfaces.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: March 8, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyuki Hiroki, Masahiko Ogawa, Ichiro Saito, Yoshiyuki Imanaka, Muga Mochizuki
  • Patent number: 6863370
    Abstract: A method of generating ejection pattern data for a plurality of nozzles for use in selectively ejecting functional liquid droplets from the nozzles is to draw on ore more one chip-forming area on a workpiece. The method includes a pixel-setting step of setting pixel information concerning an array of pixels in the chip-forming areas, a chip-setting step of setting chip information concerning an array of the chip-forming areas on the workpiece, a nozzle-setting step of setting nozzle information concerning an array of the nozzles, and a data-generating step of generating the ejection pattern data for the nozzles from the pixel information, the chip information, and the nozzle information, based on a positional relationship between the workpiece and the functional liquid droplet ejection head. The ejection pattern data are easily and quickly generated for the nozzles arranged in an array in the plurality of functional liquid droplet ejection heads.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: March 8, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Masahiko Ogawa, Tsuyoshi Kato