Patents by Inventor Muga Mochizuki

Muga Mochizuki 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: 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
  • Publication number: 20020171696
    Abstract: A recording head comprises a plurality of recording elements for performing recording; a driving circuit for driving the plurality of recording elements; and a predetermined voltage generating circuit for generating a predetermined voltage to be applied to the plurality of recording elements from voltage supplied from outside. With the head thus structured, a desired voltage is generated in the interior of the head by use of the predetermined voltage generating circuit for performing recording, thus making it possible to prevent the voltage drop which may take place if the voltage is supplied from outside through a cable, as well as to prevent the durability of the heat generating elements from being damaged due to noises. It also becomes possible to set the voltage to be applied to the recording elements at an optimal value corresponding to the discharge voltage, hence stabilizing ink discharges efficiently.
    Type: Application
    Filed: July 5, 2002
    Publication date: November 21, 2002
    Inventors: Muga Mochizuki, Ichiro Saito, Hiroyuki Ishinaga, Yoshiyuki Imanaka, Nobuyuki Matsumoto, Yoichi Taneya
  • Publication number: 20020154181
    Abstract: There is disclosed a solid semiconductor element which very efficiently detects information about a liquid and bidirectionally exchanges the information with the outside. The solid semiconductor element is disposed in a liquid container, and includes at least energy converting unit, information acquiring unit, and information communicating unit. The energy converting unit converts an electromotive force from the outside to a power, and operates the information acquiring unit and information communicating unit. The information acquiring unit acquires the information about the liquid in which the solid semiconductor element is disposed from the liquid, and the information communicating unit transmits the information acquired by the information acquiring unit to the outside.
    Type: Application
    Filed: April 23, 2002
    Publication date: October 24, 2002
    Inventors: Masahiko Kubota, Sadayuki Sugama, Ichiro Saito, Hiroyuki Ishinaga, Yoshiyuki Imanaka, Muga Mochizuki, Ryoji Inoue, Maki Nishida, Takaaki Yamaguchi
  • Patent number: 6468437
    Abstract: A method for producing a liquid discharge head provided with an element substrate and a ceiling plate which are fixed in a mutually opposed state, plural liquid path walls provided between said ceiling plate and said element substrate and defining plural liquid paths, plural discharge energy generating elements provided in parallel manner on the surface of said element substrate so as to be respectively positioned in said plural liquid paths, and plural movable members provided on said element substrate so as to respectively oppose said plural discharge energy generating elements and formed like a cantilever, fixed at the upstream ends in the flowing direction of the liquid in said liquid paths and having free ends at the downstream ends, the method comprising the steps of forming a gap forming member in a position, forming a first material layer, patterning an anti-etching protective film, forming a second material layer, removing a portion of said second material layer, cutting said element substrate, and r
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: October 22, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshio Kashino, Ichiro Saito, Yoshiyuki Imanaka, Teruo Ozaki, Masahiko Kubota, Muga Mochizuki
  • Patent number: 6464342
    Abstract: A liquid discharge head at least comprises a discharge opening for discharging the liquid, a liquid flow channel in communication with the discharge opening and for supplying the liquid to the discharge opening, a substrate equipped with a heat generator for producing a bubble in the liquid that is filled in the liquid flow channel, and a movable plate supported and fixed onto the substrate at a position of the substrate opposed to the heat generator and with a gap from the substrate, with a free end on the discharge opening side. The liquid discharge head can discharge the liquid from the discharge openings by forcing the free end of the movable plate to be displaced toward the discharge opening around a fulcrum portion made near a support and fixing portion of the movable plate with the substrate due to pressure caused by produced bubble.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: October 15, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiko Kubota, Ichiro Saito, Toshio Kashino, Yoshiyuki Imanaka, Teruo Ozaki, Muga Mochizuki
  • Publication number: 20020140773
    Abstract: In a liquid discharge head having an element substrate on the surface of which are provided in parallel a plurality of discharge energy generating elements generating heat energy for creating a bubble in liquid, a fixed portion provided on the element substrate so as to face the plurality of discharge energy generating elements, and fixed to the element substrate, and a plurality of movable members comprising a movable portion extending from the end portion of the fixed portion and displaced by the bubble, a fulcrum about which the movable portion is displaced is located on the movable portion other than a corner portion formed at the boundary between the movable portion and the fixed portion.
    Type: Application
    Filed: December 1, 1999
    Publication date: October 3, 2002
    Inventors: MUGA MOCHIZUKI, ICHIRO SAITO, TOSHIO KASHINO, YOSHIYUKI IMANAKA, TERUO OZAKI, MASAHIKO KUBOTA
  • 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
  • Publication number: 20020130927
    Abstract: A substrate for use of an ink jet head comprises a plurality of heat generating resistive elements formed on a substrate through insulation layer, electrode wiring electrically connected with said heat generating resistive elements, and protection layer to cover said heat generating resistive elements. Then, the protection layer of this substrate is made dielectric formed by plural atoms containing Si, and at the same time, the composition ratio of the dielectric of the portion of the protection layer at least nearest to the heat generating resistive elements is almost the stoichiometric composition ratio, and then, the composition ratio of the dielectric of the portion farthest from the heat generating resistive elements is richer in Si than the stoichiometric composition ratio.
    Type: Application
    Filed: May 19, 1999
    Publication date: September 19, 2002
    Inventors: TOSHIMORI MIYAKOSHI, ICHIRO SAITO, YOSHIYUKI IMANAKA, TERUO OZAKI, MUGA MOCHIZUKI
  • Patent number: 6443563
    Abstract: Beneath electro-thermal conversion device layers having heaters, a common electrode layer electrically connected to heaters through branch connection parts is laminated through a protective film, and discrete electrodes are formed on an upper surface of the electro-thermal conversion device layers putting the branch connection parts between, respectively.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: September 3, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ichiro Saito, Masashi Kitani, Yoshiyuki Imanaka, Teruo Ozaki, Toshimori Miyakoshi, Muga Mochizuki
  • Patent number: 6439680
    Abstract: A recording head comprises a plurality of recording elements for performing recording; a driving circuit for driving the plurality of recording elements; and a predetermined voltage generating circuit for generating a predetermined voltage to be applied to the plurality of recording elements from voltage supplied from outside. With the head thus structured, a desired voltage is generated in the interior of the head by use of the predetermined voltage generating circuit for performing recording, thus making it possible to prevent the voltage drop which may take place if the voltage is supplied from outside through a cable, as well as to prevent the durability of the heat generating elements from being damaged due to noises. It also becomes possible to set the voltage to be applied to the recording elements at an optimal value corresponding to the discharge voltage, hence stabilizing ink discharges efficiently.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: August 27, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Muga Mochizuki, Ichiro Saito, Hiroyuki Ishinaga, Yoshiyuki Imanaka, Nobuyuki Matsumoto, Yoichi Taneya
  • Publication number: 20020084245
    Abstract: The present invention provides a method for manufacturing a liquid injecting head, in which liquid flow paths are defined by combining an element substrate having a plurality of discharge energy generating elements for applying discharge energy to liquid with a nozzle member having a plurality of liquid discharge nozzle grooves, which method comprises a step for preparing at least one material common to the element substrate as a base material of the nozzle member, a step for forming etching mask layers on a first surface of the base material of the nozzle member in which the nozzle grooves are formed and a second surface opposite to the first surface, a step for forming a recessed portion in the second surface of the base material by patterning the mask layer on the second surface of the base material and by effecting etching via the mask layer of the second surface, and a step for forming the nozzle grooves in the base material and for communicating the recessed portion with the nozzle grooves by patterning
    Type: Application
    Filed: December 21, 2001
    Publication date: July 4, 2002
    Inventors: Tomoyuki Hiroki, Masahiko Ogawa, Ichiro Saito, Yoshiyuki Imanaka, Muga Mochizuki
  • Patent number: 6402302
    Abstract: There is provided a liquid discharge head including a substrate, a ceiling plate connected to the substrate, a liquid flow path formed between the substrate and the ceiling plate, and a cantilever-like movable member having a fixed end fixed to the substrate and a free end extending into the liquid flow path, wherein the movable member is formed of a lower protective layer, a heat generating resistive layer, a lower electrode layer, an insulating layer, an upper electrode layer, and an upper protective layer stacked from the side of the substrate in the mentioned order, and wherein application of a voltage to a heat generating portion of the heat generating resistive layer causes bubbling of a liquid in the liquid flow path between the movable member and the substrate to discharge the liquid.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: June 11, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Teruo Ozaki, Akihiro Yamanaka, Yoshiyuki Imanaka, Masahiko Kubota, Muga Mochizuki
  • Patent number: 6382755
    Abstract: A printhead with a comparatively simple construction, which contributes to reducing the cost of the entire system and development work, effectively utilizes essential constituent devices of a logic circuit of the printhead such as a shift register, while omitting control on the printing apparatus side, and individually performs stable print operation, while suppressing variation of energy inputted to heat generators due to voltage drop by parasitic resistance. A printing apparatus incorporates the printhead. The printhead has a counter which counts the number of simultaneously-driven heat generators, which always changes in accordance with image data, based on externally-inputted image data and block selection signal, and a modulator which modulates the pulse width of a drive signal applied to the simultaneously-driven heat generators based on a value obtained from counting by the counter.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: May 7, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Imanaka, Teruo Ozaki, Muga Mochizuki
  • Patent number: 6378993
    Abstract: There is provided a liquid discharge head provided with an element substrate and a ceiling plate fixed in a mutually opposed state, plural liquid path lateral walls provided between the ceiling plate and the element substrate and defining plural light flow paths, plural discharge energy generating elements arranged in parallel on the surface of the element substrate so as to be respectively positioned in the plural liquid paths, plural movable members in the form of a beam supported at an end, provided on the element substrate so as to be respectively opposed to the plural discharge energy generating elements and provided with fixed ends at the upstream side in the liquid flowing direction in the liquid paths and free ends at the downstream ends, and plural projections provided on the ceiling plate for respectively limiting the amount of displacement of the plural movable members, the element substrate and the ceiling plate being composed of similar materials, wherein the liquid path lateral walls are formed
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: April 30, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Teruo Ozaki, Ichiro Saito, Toshio Kashino, Yoshiyuki Imanaka, Masahiko Kubota, Muga Mochizuki, Yoshiaki Kurihara, Masashi Miyagawa, Shuji Koyama
  • Publication number: 20020033855
    Abstract: There is disclosed a solid semiconductor element which very efficiently detects information about a liquid and bidirectionally exchanges the information with the outside. The solid semiconductor element is disposed in a liquid container, and includes at least energy converting unit, information acquiring unit, and information communicating unit. The energy converting unit converts an electromotive force from the outside to a power, and operates the information acquiring unit and information communicating unit. The information acquiring unit acquires the information about the liquid in which the solid semiconductor element is disposed from the liquid, and the information communicating unit transmits the information acquired by the information acquiring unit to the outside.
    Type: Application
    Filed: June 13, 2001
    Publication date: March 21, 2002
    Inventors: Masahiko Kubota, Sadayuki Sugama, Ichiro Saito, Hiroyuki Ishinaga, Yoshiyuki Imanaka, Muga Mochizuki, Ryoji Inoue, Maki Nishida, Takaaki Yamaguchi
  • Patent number: 6357862
    Abstract: The substrate for use of an ink jet recording head is provided with a plurality of heat generating resistive members and the electrode wiring pattern electrically connected with the heat generating resistive members formed on the substrate, and a protection film formed on the heat generating resistive members and the electrode wiring pattern to protect them from ink. For this substrate, each of the heat generating resistive members comprises a first heat generating resistive member arranged on the lower layer of the electrode wiring pattern connected with the heat generating resistive member, and a second heat generating resistive member arranged between the protection film and the electrode wiring pattern. With the structure thus arranged, it becomes possible to make the protection film on the upper layer thinner, and attempt the power saving.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: March 19, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Teruo Ozaki, Masahiko Ogawa, Yoshiyuki Imanaka, Muga Mochizuki
  • Publication number: 20020030710
    Abstract: An ink tank is provided which can efficiently perform detection of information in an ink tank such as an ink residual amount in the ink tank with a simple configuration in which it is unnecessary to set wiring or the like. A solid semiconductor element, which is provided with an acquiring unit for acquiring environmental information of the outside, an information storing unit, a discriminating unit for comparing acquired information and stored information to make a determination, and an information communicating unit for displaying the acquired information or communicating the acquired information to the outside, is embedded in an outer wall of an ink tank such that the solid semiconductor element is exposed to an internal side and an external side of the ink tank from the outer wall.
    Type: Application
    Filed: June 12, 2001
    Publication date: March 14, 2002
    Inventors: Muga Mochizuki, Ichiro Saito, Hiroyuki Ishinaga, Yoshiyuki Imanaka, Masahiko Kubota, Ryoji Inoue, Takaaki Yamaguchi
  • Publication number: 20020024550
    Abstract: An ink jet recording head includes a plurality of recording elements arranged in an array on a substrate, the recording elements having electric resistances with a variance not less than 4% from a resistance value of at least one of the recording elements, wherein the recording elements generate ink ejection energy to effect printing; a plurality of measuring elements, disposed adjacent at least each of the opposite ends of the array of the recording elements, for detesting characteristic values of the recording elements; and storing means for storing an average, a median or a reference value corresponding thereto.
    Type: Application
    Filed: July 2, 2001
    Publication date: February 28, 2002
    Inventors: Yoshiyuki Imanaka, Takeshi Okazaki, Teruo Ozaki, Muga Mochizuki
  • Publication number: 20020024564
    Abstract: The present invention provides an ink jet head substrate comprising a heat generating resistance member forming a heat generating portion, an electrode wiring electrically connected to the heat generating resistance member, and an anti-cavitation film provided on the heat generating resistance member and the electrode wiring via an insulation protection layer, and wherein the anti-cavitation film is formed from different materials with more than two layers.
    Type: Application
    Filed: July 27, 2001
    Publication date: February 28, 2002
    Inventors: Teruo Ozaki, Masami Ikeda, Masami Kasamoto, Ichiro Saito, Hiroyuki Ishinaga, Shuji Koyama, Yoshinori Misumi, Junichiro Iri, Muga Mochizuki
  • Publication number: 20020008724
    Abstract: A solid type semiconductor device comprises energy converting means for converting energy from outside, and operating means operated by energy converted by the energy converting means. The energy converting means converts the electromotive force supplied from the outside to the device in non-contact into electric power. The operating means comprises information acquiring means actuated by electric power obtained by energy converting means; discriminating means; information accumulating means; and information communicating means.
    Type: Application
    Filed: April 11, 2001
    Publication date: January 24, 2002
    Inventors: Masahiko Kubota, Sadayuki Sugama, Ichiro Saito, Hiroyuki Ishinaga, Yoshiyuki Imanaka, Muga Mochizuki, Ryoji Inoue, Kenji Kitabatake, Maki Nishida, Takaaki Yamaguchi