Patents by Inventor Takashi Ushijima
Takashi Ushijima 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: 20080032073Abstract: A beam having a base material of silicon monocrystal and at least one projection which is integrally formed so as to be supported at least at one end thereof and which has two surfaces having an orientation plane (111), includes a bottom surface in a plane which is common with a plane of the base material; a groove penetrating from the bottom surface to a top of the projection; and a protecting member having a resistance property against a crystal anisotropic etching liquid and covering an inner wall of the groove.Type: ApplicationFiled: August 8, 2007Publication date: February 7, 2008Applicant: CANON KABUSHIKI KAISHAInventors: TAKASHI USHIJIMA, Takeo Yamazaki, Makoto Terui, Kazuhiro Hayakawa
-
Patent number: 7294389Abstract: In a method of fabricating an array of microstructures, a substrate with an electrically-conductive portion is provided, an insulating mask layer is formed on the electrically-conductive portion of the substrate, a plurality of openings are formed in the insulating mask layer to expose the electrically-conductive portion, and a first plated or electrodeposited layer is deposited in the openings and on the insulating mask layer by electroplating or electrodeposition. A second plated layer is further formed on the first plated or electrodeposited layer and on the electrically-conductive portion by electroless plating to reduce a size distribution of microstructures over the array.Type: GrantFiled: September 1, 2004Date of Patent: November 13, 2007Assignee: Canon Kabushiki KaishaInventors: Takayuki Teshima, Takayuki Yagi, Yasuhiro Shimada, Takashi Ushijima
-
Publication number: 20070257682Abstract: A potential sensor including first and second detection electrodes opposed to an object of which a potential is to be measured, and a movable shutter so positioned between the detection electrodes and the potential-measured object with gaps thereto; wherein the movable shutter can assume a first state and a second state, the first detection electrode is exposed to the potential-measured object wider when the movable shutter assumes the first state than when the movable shutter assumes the second state, and the second detection electrode is exposed to the potential-measured object narrower when the movable shutter assumes the first state than when the movable shutter assumes the second state.Type: ApplicationFiled: July 5, 2007Publication date: November 8, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Susumu Yasuda, Takayuki Yagi, Takashi Ushijima, Yoshitaka Zaitsu, Yoshikatsu Ichimura
-
Patent number: 7275813Abstract: A beam having a base material of silicon monocrystal and at least one projection which is integrally formed so as to be supported at least at one end thereof and which has two surfaces having an orientation plane (111), includes a bottom surface in a plane which is common with a plane of the base material; a groove penetrating from the bottom surface to a top of the projection; and a protecting member having a resistance property against a crystal anisotropic etching liquid and covering an inner wall of the groove.Type: GrantFiled: December 10, 2004Date of Patent: October 2, 2007Assignee: Canon Kabushiki KaishaInventors: Takashi Ushijima, Takeo Yamazaki, Makoto Terui, Kazuhiro Hayakawa
-
Patent number: 7274193Abstract: A potential sensor (101) including first and second detection electrodes (121 a, b) opposed to an object of which a potential is to be measured, and a movable shutter (125) so positioned between the detection electrodes and the potential-measured object with gaps thereto; wherein the movable shutter can assume a first state and a second state, the first detection electrode is exposed to the potential-measured object wider when the movable shutter assumes the first state than when the movable shutter assumes the second state, and the second detection electrode is exposed to the potential-measured object narrower when the movable shutter assumes the first state than when the movable shutter assumes the second state.Type: GrantFiled: March 26, 2004Date of Patent: September 25, 2007Assignee: Canon Kabushiki KaishaInventors: Susumu Yasuda, Takayuki Yagi, Takashi Ushijima, Yoshitaka Zaitsu, Yoshikatsu Ichimura
-
Publication number: 20070182419Abstract: Oscillating device including a movable member that is vibratable, a fixed section that is provided opposite to the movable member, a driving unit configured to drive the movable member, and at least two electrodes configured to generate a first signal corresponding to a drive state of the movable member. At least one electrode is provided on the movable member, and at least one electrode is provided on the fixed section. The driving unit can control the driving of the movable member on the basis of the first signal.Type: ApplicationFiled: February 1, 2007Publication date: August 9, 2007Applicant: Canon Kabushiki KaishaInventors: Takashi Ushijima, Yoshikatsu Ichimura, Atsushi Kandori, Yoshitaka Zaitsu
-
Publication number: 20070170925Abstract: An electric potential measuring apparatus comprises a movable portion having a detecting electrode and a magnetic force receiving means, a magnetic force generation means, an electric field shielding means, and a detection means for detecting an amount of an electric charge which is electrostatically induced on the detecting electrode, the electric field shielding means transmitting a magnetic field generated by the magnetic force generation means to make it arrive at the magnetic force receiving means but shielding the detecting electrode from an electric field generated by the magnetic force generation means to interrupt arrival to the detecting electrode and not to obstruct the detection by the detection means substantially.Type: ApplicationFiled: December 8, 2005Publication date: July 26, 2007Applicant: Canon Kabushiki KaishaInventors: Atsushi Kandori, Yoshikatsu Ichimura, Takashi Ushijima, Yoshitaka Zaitsu
-
Patent number: 7212007Abstract: Disclosed in a non-contacting electric potential sensor capable of being readily reduced in its size, which includes a detecting electrode, an electrically-conductive movable shutter, and a driving unit for driving the electrically-conductive movable shutter. The detecting electrode is to be placed facing a measurement object whose electric potential is to be measured. The electrically-conductive movable shutter is disposed so as to be movably located in a spacing formed between the detecting electrode and the measurement object when the detecting electrode is placed facing the measurement object, so that an exposure degree of the detecting electrode against the measurement object can be controlled. The driving unit includes a current injecting unit for selectively injecting current into the electrically-conductive movable shutter in a direction approximately perpendicular to a moving direction of the electrically-conductive movable shutter.Type: GrantFiled: September 12, 2005Date of Patent: May 1, 2007Assignee: Canon Kabushiki KaishaInventors: Susumu Yasuda, Takashi Ushijima, Yoshitaka Zaitsu, Yoshikatsu Ichimura
-
Publication number: 20070065169Abstract: An electric potential measuring apparatus includes a detecting electrode, a modulator for changing an electrostatic capacitance between a measurement object and the detecting electrode by mechanical vibration, a charge detector for detecting the amount of charges electrostatically induced in the detecting electrode by the modulator, and a vibration generating-detecting unit for selectively performing either a vibration generating function of exciting the mechanical vibration, or a detecting function of detecting the condition of the mechanical vibration.Type: ApplicationFiled: August 9, 2006Publication date: March 22, 2007Applicant: Canon Kabushiki KaishaInventors: Atsushi Kandori, Yoshikatsu Ichimura, Takashi Ushijima, Yoshitaka Zaitsu, Kaoru Noguchi
-
Patent number: 7149442Abstract: An electric potential sensor includes a detecting electrode, a capacitor modulating unit for modulating a coupling capacitance between the detecting electrode and a measurement object by using an electrostatic force, and a shielding unit for electrically shielding the detecting electrode from electric fields due to the electrostatic force of the capacitor modulating unit. An electric potential of the measurement object is measured based on a change caused by the capacitor modulating unit in the amount of electrical charge induced in the detecting electrode. Entrance of lines of electric force due to the electrostatic force of the capacity modulating unit into the detecting electrode is prevented or reduced, so that an unfavorable mixture of driving noise into an output signal of the detecting electrode can be prevented or reduced.Type: GrantFiled: June 9, 2005Date of Patent: December 12, 2006Assignee: Canon Kabushiki KaishaInventors: Takashi Ushijima, Yoshikatsu Ichimura, Atsushi Kandori, Yoshitaka Zaitsu
-
Publication number: 20060267578Abstract: A potential measuring apparatus has a detection electrode on which an electric charge is induced according to a potential of a detection object, and a modulator for altering the generated quantity of the electric charge. The detection electrode has at least one depressed portion on a surface opposite to the detection object.Type: ApplicationFiled: May 17, 2006Publication date: November 30, 2006Applicant: Canon Kabushiki KaishaInventors: Takashi Ushijima, Yoshikatsu Ichimura, Atsushi Kandori, Yoshitaka Zaitsu
-
Publication number: 20060267593Abstract: Provided is a potential measuring device for measuring a potential of a measurement object, comprising a detection electrode disposed to face the measurement object, a reference electrode disposed in a vicinity of the detection electrode, an electrostatic shield structure for electrostatically shielding the reference electrode with respect to the measurement object, and capacitance modulator for modulating an electrostatic coupled capacitance between the detection electrode and the measurement object to measure a potential of the measurement object by using an electric signal generated on the detection electrode and an electric signal generated on the reference electrode.Type: ApplicationFiled: May 10, 2006Publication date: November 30, 2006Applicant: Canon Kabushiki KaishaInventors: Yoshikatsu Ichimura, Takashi Ushijima, Atsushi Kandori, Yoshitaka Zaitsu
-
Publication number: 20060261034Abstract: The invention is to suppress a loss in the rigidity of a substrate for a liquid discharge head having nozzles at a high density. The invention provides a liquid discharge head including plural pressure generating chambers respectively provided with pressure generating elements, plural nozzle apertures respectively communicating with the plural pressure generating chambers and adapted to discharge a liquid, and a reservoir with which the plural pressure generating chambers commonly communicate respectively through communicating parts, wherein the pressure generating chambers and the reservoir respectively have recessed portions formed respectively on one and the other of two principal planes of a same substrate, and the reservoir contains a portion shallower than a communicating part nearby area in the vicinity of the communicating part within the reservoir.Type: ApplicationFiled: May 19, 2006Publication date: November 23, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Rei Kurashima, Takashi Ushijima, Koichiro Nakanishi
-
Publication number: 20060192565Abstract: A potential sensor (101) including first and second detection electrodes (121 a, b) opposed to an object of which a potential is to be measured, and a movable shutter (125) so positioned between the detection electrodes and the potential-measured object with gaps thereto; wherein the movable shutter can assume a first state and a second state, the first detection electrode is exposed to the potential-measured object wider when the movable shutter assumes the first state than when the movable shutter assumes the second state, and the second detection electrode is exposed to the potential-measured object narrower when the movable shutter assumes the first state than when the movable shutter assumes the second state.Type: ApplicationFiled: March 26, 2004Publication date: August 31, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Susumu Yasuda, Takayuki Yagi, Takashi Ushijima, Yoshitaka Zaitsu, Yoshikatsu Ichimura
-
Publication number: 20060158196Abstract: An electric potential measuring apparatus including a substrate disposed facing a measurement object, a detecting electrode provided insulated from the substrate, and a capacity modulating unit for modulating a coupling capacity between the detecting electrode and the measurement object. In the electric potential measuring apparatus, a region with a dielectric constant less than a dielectric constant of the substrate is formed in the substrate to achieve an increase in resistivity of a portion of the substrate between detecting electrodes, or a decrease in a stray capacity between the detecting electrode and the substrate.Type: ApplicationFiled: March 21, 2006Publication date: July 20, 2006Applicant: Canon Kabushiki KaishaInventors: Yoshikatsu Ichimura, Yoshitaka Zaitsu, Takashi Ushijima, Atsushi Kandori
-
Patent number: 7049804Abstract: An electric potential measuring apparatus including a substrate disposed facing a measurement object, a detecting electrode provided insulated from the substrate, and a capacity modulating unit for modulating a coupling capacity between the detecting electrode and the measurement object. In the electric potential measuring apparatus, a region with a dielectric constant less than a dielectric constant of the substrate is formed in the substrate to achieve an increase in resistivity of a portion of the substrate between detecting electrodes, or a decrease in a stray capacity between the detecting electrode and the substrate.Type: GrantFiled: July 11, 2005Date of Patent: May 23, 2006Assignee: Canon Kabushiki KaishaInventors: Yoshikatsu Ichimura, Yoshitaka Zaitsu, Takashi Ushijima, Atsushi Kandori
-
Publication number: 20060008284Abstract: An electric potential sensor includes a detecting electrode, a capacitor modulating unit for modulating a coupling capacitance between the detecting electrode and a measurement object by using an electrostatic force, and a shielding unit for electrically shielding the detecting electrode from electric fields due to the electrostatic force of the capacitor modulating unit. An electric potential of the measurement object is measured based on a change caused by the capacitor modulating unit in the amount of electrical charge induced in the detecting electrode. Entrance of lines of electric force due to the electrostatic force of the capacity modulating unit into the detecting electrode is prevented or reduced, so that an unfavorable mixture of driving noise into an output signal of the detecting electrode can be prevented or reduced.Type: ApplicationFiled: June 9, 2005Publication date: January 12, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Ushijima, Yoshikatsu Ichimura, Atsushi Kandori, Yoshitaka Zaitsu
-
Publication number: 20060006877Abstract: An electric potential measuring apparatus including a substrate disposed facing a measurement object, a detecting electrode provided insulated from the substrate, and a capacity modulating unit for modulating a coupling capacity between the detecting electrode and the measurement object. In the electric potential measuring apparatus, a region with a dielectric constant less than a dielectric constant of the substrate is formed in the substrate to achieve an increase in resistivity of a portion of the substrate between detecting electrodes, or a decrease in a stray capacity between the detecting electrode and the substrate.Type: ApplicationFiled: July 11, 2005Publication date: January 12, 2006Applicant: Canon Kabushiki KaishaInventors: Yoshikatsu Ichimura, Yoshitaka Zaitsu, Takashi Ushijima, Atsushi Kandori
-
Publication number: 20060001432Abstract: Disclosed in a non-contacting electric potential sensor capable of being readily reduced in its size, which includes a detecting electrode, an electrically-conductive movable shutter, and a driving unit for driving the electrically-conductive movable shutter. The detecting electrode is to be placed facing a measurement object whose electric potential is to be measured. The electrically-conductive movable shutter is disposed so as to be movably located in a spacing formed between the detecting electrode and the measurement object when the detecting electrode is placed facing the measurement object, so that an exposure degree of the detecting electrode against the measurement object can be controlled. The driving unit includes a current injecting unit for selectively injecting current into the electrically-conductive movable shutter in a direction approximately perpendicular to a moving direction of the electrically-conductive movable shutter.Type: ApplicationFiled: September 12, 2005Publication date: January 5, 2006Applicant: Canon Kabushiki KaishaInventors: Susumu Yasuda, Takashi Ushijima, Yoshitaka Zaitsu, Yoshikatsu Ichimura
-
Patent number: 6965239Abstract: Disclosed in a non-contacting electric potential sensor capable of being readily reduced in its size, which includes a detecting electrode, an electrically-conductive movable shutter, and a driving unit for driving the electrically-conductive movable shutter. The detecting electrode is to be placed facing a measurement object whose electric potential is to be measured. The electrically-conductive movable shutter is disposed so as to be movably located in a spacing formed between the detecting electrode and the measurement object when the detecting electrode is placed facing the measurement object, so that an exposure degree of the detecting electrode against the measurement object can be controlled. The driving unit includes a current injecting unit for selectively injecting current into the electrically-conductive movable shutter in a direction approximately perpendicular to a moving direction of the electrically-conductive movable shutter.Type: GrantFiled: March 12, 2004Date of Patent: November 15, 2005Assignee: Canon Kabushiki KaishaInventors: Susumu Yasuda, Takashi Ushijima, Yoshitaka Zaitsu, Yoshikatsu Ichimura