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: 20030103111
    Abstract: A base member for an ink jet head, the base member comprising a substrate, a heat generating resistor provided between electrodes which constitute a pair on the substrate an upper protection layer provided on an insulation layer which in turn is provided on the heat generating resistor, the upper protection layer having a contact surface contactable to ink, the improvement residing in that
    Type: Application
    Filed: September 25, 2002
    Publication date: June 5, 2003
    Inventors: Ichiro Saito, Masahiko Ogawa, Teruo Ozaki, Masahiko Kubota, Muga Mochizuki
  • Publication number: 20030103110
    Abstract: A substrate for use of an ink jet recording head is provided with a plurality of heat generating members for generating thermal energy to be utilized for discharging ink. The heat generating members are structured by thin film formed by material represented by Tax Siy Rz, which has specific resistance value of 4000 &mgr;&OHgr;·cm or less, where R is one or more kinds of elements selected from among C, O, N, and x+y+z=100. With the structure thus arranged, the heat generating members make it possible to maintain the change of resistance values within a small amount even when used continuously for a long time, and provide recorded images in high quality with long life and reliability.
    Type: Application
    Filed: August 6, 2002
    Publication date: June 5, 2003
    Applicant: Canon Kabushiki Kaisha
    Inventors: Ichiro Saito, Yoshiyuki Imanaka, Teruo Ozaki, Toshimori Miyakoshi, Muga Mochizuki, Masahiko Ogawa
  • Publication number: 20030104224
    Abstract: A primer composition comprising (A) a diorganopolysiloxane having an average degree of polymerization of 500-2,000 and alkenyl groups at both ends of its molecular chain in an amount of 0.001-0.005 mol per 100 g of the diorganopolysiloxane, (B) an organohydrogenpolysiloxane having at least two SiH groups in a molecule, (C) a platinum base curing catalyst, and (D) a retarder is effective for improving the adhesion between various plastic films and silicone pressure-sensitive adhesives and thus forming satisfactory pressure-sensitive adhesive tapes.
    Type: Application
    Filed: October 11, 2002
    Publication date: June 5, 2003
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yasuyoshi Kuroda, Shunji Aoki, Masahiko Ogawa
  • Patent number: 6573355
    Abstract: The invention discloses a method for the preparation of an organopolysiloxane having a branched molecular structure which comprises the steps of: (A) Mixing (A1) an organopolysiloxane represented by the average unit formula [R13SiO½]m[R1SiO{fraction (3/2)}]n[R1(R2O)SiO]q, in which R1 is a monovalent hydrocarbon group, R2 is a hydrogen atom, methyl group or ethyl group and the subscripts m, n and q are each 0 or a positive number with the proviso that (n+q)/m is from 0.6 to 1.5 and q/(m+n) is 0 or a positive number not exceeding 0.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: June 3, 2003
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Shinji Irifune, Masahiko Ogawa
  • Patent number: 6559246
    Abstract: A primer composition comprising (A) a diorganopolysiloxane having an average degree of polymerization of 500-2,000 and alkenyl groups at both ends of its molecular chain in an amount of 0.001-0.005 mol per 100 g of the diorganopolysiloxane, (B) an organohydrogenpolysiloxane having at least two SiH groups in a molecule, (C) a platinum base curing catalyst, and (D) a retarder is effective for improving the adhesion between various plastic films and silicone pressure-sensitive adhesives and thus forming satisfactory pressure-sensitive adhesive tapes.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: May 6, 2003
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yasuyoshi Kuroda, Shunji Aoki, Masahiko Ogawa
  • Patent number: 6540336
    Abstract: A liquid discharge head, a liquid discharging apparatus having such a liquid discharge head, and a method for manufacturing such a liquid discharge head. The liquid discharge head is provided with a top plate including a plurality of ink discharge ports for discharging ink droplet, a plurality of first liquid passages for supplying ink in correspondence to the plurality of ink discharge ports and a common liquid chamber for supplying the ink to the first liquid passages, a liquid discharge head substrate obtained by forming second liquid passages arranged adjacent to the first liquid passages and including bubble generating areas on a substrate on which a plurality of heat generating elements for causing the ink discharge port to discharge the ink droplets and including drivers for driving the heat generating elements, and a movable diaphragm for completely isolating the first liquid passages and the second liquid passages from each other and displaceable by a bubble generated on the heat generating element.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: April 1, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiko Kubota, Masahiko Ogawa, Masami Ikeda, Ichiro Saito, Hiroyuki Ishinaga, Tomoyuki Hiroki, Yoshiyuki Imanaka, Teruo Ozaki
  • Patent number: 6532027
    Abstract: An ink jet recording head in which a heating resistor forming a heating portion, a wiring electrically connected to the heating resistor, and a protective film formed on the heating resistor and the wiring to protect the heating resistor and the wiring are arranged on a substrate for the ink jet recording head. An ink path in communication with a discharging port for discharging ink is also formed on the substrate for the ink jet recording head.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: March 11, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Teruo Ozaki, Masahiko Ogawa, Tomoyuki Hiroki, Muga Mochizuki
  • Patent number: 6527813
    Abstract: A substrate for use in an ink jet recording head is provided with a plurality of heat generating members for generating thermal energy to be utilized for discharging ink. The heat generating members are structured by a thin film formed by material represented by Tax Siy Rz, which has a specific resistance value of 4000 &mgr;&OHgr;·cm or less, where R is one or more kinds of elements selected from/among C, O, N, and x+y+z=100. With the structure thus arranged, the heat generating members make it possible to maintain the change of resistance values within a small amount even when used continuously for a long time, and provide recorded images of high quality with long life and reliability.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: March 4, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ichiro Saito, Yoshiyuki Imanaka, Teruo Ozaki, Toshimori Miyakoshi, Muga Mochizuki, Masahiko Ogawa
  • Publication number: 20030035965
    Abstract: A silicone composition comprising a first organopolysiloxane containing T units, a second organopolysiloxane, an organohydrogenpolysiloxane, and a platinum catalyst cures into a coating that adheres well to plastic film substrates and even to polyester film substrates which are difficult for conventional solventless silicone compositions to adhere. The cured coating exhibits release properties to pressure-sensitive adhesives, and a film substrate coated with the cured silicone composition provides a release film.
    Type: Application
    Filed: July 12, 2002
    Publication date: February 20, 2003
    Inventors: Shinji Irifune, Masahiko Ogawa
  • Publication number: 20030027913
    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, 1
    Type: Application
    Filed: July 16, 2002
    Publication date: February 6, 2003
    Inventors: Kenji Yamamoto, Katsuma Baba, Masahiko Ogawa
  • Patent number: 6491380
    Abstract: A liquid discharging head comprises a discharging port for discharging liquid, a liquid flow path communicated with said discharging port, a bubble generating region for causing the liquid to generate a bubble and a movable member having provided thereon a free end disposed facing to said bubble generating region, and on the downstream of said liquid flow path directed toward said discharging port. At least when said movable member is in stationary state, a side of said liquid flow path corresponding to said bubble generating region is substantially composed of all with a wall face and common communicating space for commonly communicating said liquid flow path with a neighboring liquid flow path is provided in the upward of a movable section of said movable member.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: December 10, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoichi Taneya, Masahiko Ogawa, Masami Ikeda, Ichiro Saito, Hiroyuki Ishinaga, Toshio Kashino, Tomoyuki Hiroki, Yoshiyuki Imanaka, Teruo Ozaki, Masahiko Kubota, Aya Yoshihira, Kiyomitsu Kudo, Hiroyuki Sugiyama
  • Patent number: 6485131
    Abstract: A base member for an ink jet head, the base member comprising a substrate, a heat generating resistor provided between electrodes which constitute a pair on the substrate an upper protection layer provided on an insulation layer which in turn is provided on the heat generating resistor, the upper protection layer having a contact surface contactable to ink, the improvement residing in that the upper protection layer is made of amorphous alloy having a following composition formula: Ta&agr;Fe&bgr;Ni&ggr;Cr&dgr; where 10 atomic %≦&agr;≦30 atomic %, &agr;+&bgr;<80 atomic % &agr;<&bgr;, &dgr;>&ggr; and, &agr;+&bgr;+&ggr;+&dgr;=100 atomic %, and at least the contact surface of the upper protection layer contains an oxide of a constituent component.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: November 26, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ichiro Saito, Masahiko Ogawa, Teruo Ozaki, Masahiko Kubota, Muga Mochizuki
  • Patent number: 6485132
    Abstract: A liquid discharge head includes a pair of substrates mutually fixed in lamination, a plurality of liquid flow paths arranged on the bonded faces of the substrates, the leading end of the plural liquid flow paths being communicated with a plurality of discharge ports, a plurality of heat generating members arranged on at least one of the substrates corresponding to each of the liquid flow paths and a movable member having in the liquid flow path the free end thereof on the discharge port side, and a region between the heat generating member and the movable member, where liquid exists. In the liquid discharge head, a bubble is created by enabling thermal energy generated by the heat generating members to act upon the liquid, and the bubble is controlled by the movable member to discharge liquid in the liquid flow paths from the discharge ports to the outside.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: November 26, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyuki Hiroki, Masahiko Ogawa, Masami Ikeda, Ichiro Saito, Hiroyuki Ishinaga, Yoshiyuki Imanaka, Teruo Ozaki, Masahiko Kubota, Takayuki Yagi
  • Patent number: 6474789
    Abstract: A substrate having plural recording elements and electrical leads for supplying electric signals to the recording elements includes electrical contacts for external electrical connection for reception of image signals used for driving the recording elements; and a processing circuit for converting signals which are serially supplied to the connecting contact to parallel signals to be applied to the recording elements.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: November 5, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Ishinaga, Masahiko Ogawa, Masami Ikeda, Asao Saito, Hideo Saikawa, Akihiro Yamanaka, Kimiyuki Hayasaki, Teruo Ozaki, Shuichi Murakami, Hiroto Matsuda
  • Patent number: 6460978
    Abstract: A liquid discharge head includes a discharge port for discharging liquid, a liquid flow path communicating therewith and provided with a heat generating member for generating bubbles by heating the liquid, and a common liquid chamber for retaining the liquid to be supplied to the liquid flow path. A narrowed portion is provided in the liquid flow path between the common liquid chamber and the heat generating member. Between the narrowed portion and the heat generating member, a displaceable plate type movable member is provided. The movable member stands up from the surface of the liquid flow path having the heat generating member, in a direction substantially perpendicular to the liquid supplying direction. A first gap is provided between the narrowed portion and the movable member, and a second gap is provided between a free end of the movable member and a ceiling of the liquid flow path.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: October 8, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiko Ogawa
  • Publication number: 20020140751
    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: January 23, 2002
    Publication date: October 3, 2002
    Inventors: Yoshiyuki Imanaka, Masahiko Ogawa, Ichiro Saito
  • Publication number: 20020135641
    Abstract: In ink jet recording head in which a heating resistor forming a heating portion, a wiring electrically connected to the heating resistor, and a protecting film formed on the heating resistor and the wiring to protect the heating resistor and the wiring are arranged on a substrate for the ink jet recording head, and an ink path communicated with a discharging port for discharging ink is formed on the substrate for the ink jet recording head, the protecting film includes a first layer protecting film for covering the heating resistor and the wiring, a second layer protecting film formed on the first layer protecting film by a material different from that of the first layer protecting film and having an opening in a portion corresponding to the heating portion of the heating resistor and constructed by an inorganic material, and a third layer protecting film constructed by the same material system as the first layer protecting film and covering the second layer protecting film and the first layer protecting film
    Type: Application
    Filed: December 15, 1998
    Publication date: September 26, 2002
    Inventors: TERUO OZAKI, MASAHIKO OGAWA, TOMOYUKI HIROKI, MUGA MOCHIZUKI
  • Patent number: 6439700
    Abstract: In accordance with the present invention, there is provided a liquid discharge head comprising a discharge port for discharging liquid, a liquid flow path provided with a bubble generation means for generating bubbles in liquid and communicated with the discharge port, and a movable member provided facing said bubble generation means in said liquid flow path and having a free end on a downstream side toward the discharge port, a first surface provided with the bubble generation means being continued to at least one second surface of the side wall surface of said liquid flow path and the front end surface having the opening of the discharge port with a curved surface, the first surface being one of surfaces forming the liquid flow path.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: August 27, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Ishinaga, Masahiko Ogawa, Masami Ikeda, Ichiro Saito, Tomoyuki Hiroki, Yoshiyuki Imanaka, Teruo Ozaki, Masahiko Kubota, Yoichi Taneya, Hiroyuki Sugiyama
  • Publication number: 20020106520
    Abstract: The invention discloses a novel radiation-curable silicone-based release coating composition capable of giving a cured release coating film on a substrate such as a plastic resin film exhibiting excellent adhesion to a variety of substrate materials and excellent releasability. The radiation-curable releasing silicone composition of the invention comprises (A) an aromatic compound having, in a molecule, at least two cationically polymerizable organopolysiloxanyl groups such as epoxy-substituted organopolysiloxanyl groups as the silicone ingredient and (B) a photopolymerization initiator which is an onium salt compound such as diaryliodonium salt compounds.
    Type: Application
    Filed: December 12, 2001
    Publication date: August 8, 2002
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masatoshi Takahashi, Masahiko Ogawa
  • Publication number: 20020093553
    Abstract: A method for manufacturing liquid discharge heads is provided with discharge ports for discharging liquid, liquid flow paths communicated with the discharge ports for supplying liquid to the discharge ports, a substrate having heat generating members for creating bubbles in liquid, and movable members facing the heat generating members, each being arranged in each liquid flow path, having the free end on the discharge port side with a specific gap with the heat generating member. This method comprises the steps of forming the boundary layer used for providing a gap between the movable member and the substrate above the heat generating member on the substrate, of laminating the movable member on the boundary layer so as to position the free end above the heat generating member, at the same time fixing the movable member on the substrate, and of forming the gap between the movable member and the heat generating member by use of the boundary layer.
    Type: Application
    Filed: February 11, 2002
    Publication date: July 18, 2002
    Inventors: Hiroaki Mihara, Masahiko Ogawa, Kazuaki Masuda, Masami Ikeda, Ichiro Saito, Hiroyuki Ishinaga, Toshio Kashino, Shuji Koyama, Tomoyuki Hiroki, Yoshiyuki Imanaka, Teruo Ozaki, Masahiko Kubota