Patent application number | Description | Published |
20090315432 | METAL OXIDE, PIEZOELECTRIC MATERIAL AND PIEZOELECTRIC ELEMENT - Provided are a piezoelectric material without using lead or an alkali metal, the piezoelectric material having a stable crystal structure in a wide temperature range, high insulation property, and high piezoelectric property, and a piezoelectric element using the piezoelectric material, in which the piezoelectric material is made of a metal oxide having a tetragonal crystal structure and expressed by Ba(Si | 12-24-2009 |
20100025617 | METAL OXIDE - Provided is a piezoelectric material excellent in piezoelectricity. The piezoelectric material includes a perovskite-type complex oxide represented by the following General Formula (1). | 02-04-2010 |
20100040928 | POLYMER ELECTROLYTE MEMBRANE AND METHOD FOR PRODUCING POLYMER ELECTROLYTE MEMBRANE - The present invention can provide a polymer electrolyte membrane having power generation characteristics with a high output and long life and a polymer electrolyte fuel cell using the same. The present invention provides a polymer electrolyte membrane having a porous polymer film and a proton conducting component present in a hole of the porous polymer film, characterized in that the proton conducting component has a compound having a proton conducting group and a bicyclo ring structure. | 02-18-2010 |
20100208412 | FERROELECTRIC MATERIAL, METHOD OF PRODUCING FERROELECTRIC MATERIAL, AND FERROELECTRIC DEVICE - Provided are a ferroelectric material having good ferroelectricity and good insulation property, and a ferroelectric device using the ferroelectric material. In the present invention, the ferroelectric material includes a metal oxide having a perovskite-type crystal structure, in which: the metal oxide contains bismuth ferrite whose iron is substituted by manganese, and at least one of a copper oxide and a nickel oxide; the bismuth ferrite is substituted by manganese at a substitution ratio of 0.5 at. % or more to 20 at. % or less with respect to a total amount of iron and manganese; and at least one of the copper oxide and the nickel oxide is added in an amount of 0.5 mol % or more to 20 mol % or less with respect to the bismuth ferrite whose iron is substituted by manganese. | 08-19-2010 |
20100231095 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC DEVICE, AND METHOD OF PRODUCING THE PIEZOELECTRIC DEVICE - Provided are a bismuth-based piezoelectric material whose insulation property is improved while its performance as a piezoelectric body is not impaired and a piezoelectric device using the piezoelectric material. The piezoelectric material includes a perovskite-type metal oxide represented by the following general formula (1): | 09-16-2010 |
20110079883 | FERROELECTRIC THIN FILM - Provided is a ferroelectric thin film formed on a substrate and having an amount of remanent polarization increased in its entirety. The ferroelectric thin film contains a perovskite-type metal oxide formed on a substrate, the ferroelectric thin film containing a column group formed of multiple columns each formed of a spinel-type metal oxide, in which the column group is in a state of standing in a direction perpendicular to a surface of the substrate, or in a state of slanting at a slant angle in a range of −10° or more to +10° or less with respect to the perpendicular direction. | 04-07-2011 |
20110128327 | PIEZOELECTRIC CERAMIC, METHOD FOR MAKING THE SAME, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - A piezoelectric ceramic that includes barium titanate and 0.04 mass % or more and 0.20 mass % or less manganese relative to barium titanate. The piezoelectric ceramic is composed of crystal grains. The crystal grains include crystal grains A having an equivalent circular diameter of 30 μm or more and 300 μm or less and crystal grains B having an equivalent circular diameter of 0.5 μm or more and 3 μm or less. The crystal grains A and the crystal grains B individually form aggregates and the aggregates of the crystal grains A and the aggregates of the crystal grains B form a sea-island structure. | 06-02-2011 |
20110193451 | MANUFACTURING METHOD FOR PREFERENTIALLY-ORIENTED OXIDE CERAMICS, PREFERENTIALLY-ORIENTED OXIDE CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE - Provided is a manufacturing method for preferentially-oriented oxide ceramics having a high degree of crystal orientation. The manufacturing method includes: obtaining slurry containing an oxide crystal B having magnetic anisotropy; applying a magnetic field to the oxide crystal B, and obtaining a compact of the oxide crystal B; and subjecting the compact to oxidation treatment to obtain preferentially-oriented oxide ceramics including a compact of an oxide crystal C having a crystal system that is different from a crystal system of one of a part and a whole of the oxide crystal B. By (1) reacting raw materials, (2) reducing the oxide crystal A, or (3) keeping the oxide crystal A at high temperature and quenching the oxide crystal A, the oxide crystal B is obtained to be used in the slurry. | 08-11-2011 |
20110221302 | BISMUTH IRON OXIDE POWDER, MANUFACTURING METHOD FOR THE BISMUTH IRON OXIDE POWDER, DIELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (A) grains including a bismuth iron oxide having a perovskite-type crystal structure; (B) grains including a bismuth iron oxide having a crystal structure classified to a space group Pbam; and (C) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group I23. The dielectric ceramics are made of bismuth iron oxide in which the bismuth iron oxide crystals having the crystal structure classified to the space group Pbam are distributed at a grain boundary of crystal grains of the bismuth iron oxide crystals having the perovskite-type crystal structure. | 09-15-2011 |
20110268965 | PIEZOELECTRIC MATERIAL - Provided is a piezoelectric material having a high Curie temperature and satisfactory piezoelectric characteristics, the piezoelectric material being represented by the following general formula (1): | 11-03-2011 |
20120032557 | VIBRATION GENERATING DEVICE, DRIVING METHOD THEREFOR, FOREIGN SUBSTANCE REMOVING DEVICE, AND OPTICAL DEVICE - Provided is a vibration generating device in which more improvement of drive efficiency can be realized than conventional ones. The vibration generating device includes: a piezoelectric element including a piezoelectric material interposed between electrodes; a vibration member; a power source for applying an alternating voltage to the piezoelectric element; and a control section for controlling a frequency of the alternating voltage applied by the power source, in which the control section controls the frequency of the alternating voltage applied to the piezoelectric element so that the resonance frequency of the piezoelectric element is successively changed from low frequency side to high frequency side in a frequency range including a change range of a resonance frequency of the piezoelectric element. | 02-09-2012 |
20120037842 | ANTI-THERMALLY-EXPANSIVE RESIN AND ANTI-THERMALLY-EXPANSIVE METAL - Provided are resin-based and metal-based anti-thermally-expansive members each having small thermal expansion. More specifically, provided are an anti-thermally-expansive resin and an anti-thermally-expansive metal, each including a resin or a metal having a positive linear expansion coefficient at 20° C. and a solid particle dispersed in the resin or metal, in which the solid particle includes at least an oxide represented by the following general formula (1): (Bi | 02-16-2012 |
20120040196 | THERMAL EXPANSION SUPPRESSING MEMBER AND ANTI-THERMALLY-EXPANSIVE MEMBER - Provided are a thermal expansion suppressing member having negative thermal expansion properties and a metal-based anti-thermally-expansive member having small thermal expansion. More specifically, provided are a thermal expansion suppressing member, including at least an oxide represented by the following general formula (1), and an anti-thermally-expansive member, including a metal having a positive linear expansion coefficient at 20° C., and a solid body including at least an oxide represented by the following general formula (1), the metal and solid being joined to each other: (Bi | 02-16-2012 |
20120162319 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC DEVICE, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - Provided is a piezoelectric material including a bismuth barium niobium oxide-based tungsten bronze structure metal oxide having a high Curie temperature and being excellent in piezoelectric property. The piezoelectric material includes a metal oxide having a tungsten bronze structure represented by the following general formula (1), in which the metal oxide having a tungsten bronze structure includes Li, and a content of the Li is 0.015 weight percent or more and 0.600 weight percent or less in terms of metal with respect to 100 parts by weight of the metal oxide: | 06-28-2012 |
20120319533 | PIEZOELECTRIC THIN FILM, PIEZOELECTRIC ELEMENT, AND MANUFACTURING METHOD THEREOF - Provided are a piezoelectric thin film having good piezoelectricity in which a rhombohedral structure and a tetragonal structure are mixed, and a piezoelectric element using the piezoelectric thin film. The piezoelectric thin film includes a perovskite type metal oxide, in which the perovskite type metal oxide is a mixed crystal system of at least a rhombohedral structure and a tetragonal structure, and a ratio between an a-axis lattice parameter and a c-axis lattice parameter of the tetragonal structure satisfies 1.15≦c/a≦1.30. The piezoelectric element includes on a substrate: the above-mentioned piezoelectric thin film; and a pair of electrodes provided in contact with the piezoelectric thin film. | 12-20-2012 |
20130056671 | PIEZOELECTRIC CERAMICS, MANUFACTURING METHOD FOR PIEZOELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, LIQUID DISCHARGE APPARATUS, ULTRASONIC MOTOR, OPTICAL APPARATUS, VIBRATION GENERATOR, DUST REMOVING DEVICE, IMAGING APPARATUS, AND ELECTRONIC APPARATUS - Provided is a piezoelectric ceramics that can achieve both high piezoelectric performance and a high Curie temperature. Also provided are a piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust removing device, which use the piezoelectric ceramics. The piezoelectric ceramics include a perovskite-type metal oxide expressed by a general formula (1): xBaTiO | 03-07-2013 |
20130125359 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC DEVICE, AND METHOD OF PRODUCING THE PIEZOELECTRIC DEVICE - Provided are a bismuth-based piezoelectric material whose insulation property is improved while its performance as a piezoelectric body is not impaired and a piezoelectric device using the piezoelectric material. The piezoelectric material includes a perovskite-type metal oxide represented by the following general formula (1): | 05-23-2013 |
20130127298 | PIEZOELECTRIC MATERIAL AND DEVICES USING THE SAME - Provided is a Bi-based piezoelectric material having good piezoelectric properties. The piezoelectric material includes a perovskite-type metal oxide represented by the following general formula (1): | 05-23-2013 |
20130154443 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE - A piezoelectric material contains a perovskite oxynitride expressed by the General Formula: In the formula, x, y, z and w are numerical values satisfying the relationships: 0≦x≦1, 0≦y≦1, 006-20-2013 | |
20130200750 | PREFERENTIALLY-ORIENTED OXIDE CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE - Provided is a manufacturing method for preferentially-oriented oxide ceramics having a high degree of crystal orientation. The manufacturing method includes: obtaining slurry containing an oxide crystal B having magnetic anisotropy; applying a magnetic field to the oxide crystal B, and obtaining a compact of the oxide crystal B; and subjecting the compact to oxidation treatment to obtain preferentially-oriented oxide ceramics including a compact of an oxide crystal C having a crystal system that is different from a crystal system of one of a part and a whole of the oxide crystal B. By (1) reacting raw materials, (2) reducing the oxide crystal A, or (3) keeping the oxide crystal A at high temperature and quenching the oxide crystal A, the oxide crystal B is obtained to be used in the slurry. | 08-08-2013 |
20130214639 | PIEZOELECTRIC CERAMIC, METHOD FOR MAKING THE SAME, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - A piezoelectric ceramic that includes barium titanate and 0.04 mass % or more and 0.20 mass % or less manganese relative to barium titanate. The piezoelectric ceramic is composed of crystal grains. The crystal grains include crystal grains A having an equivalent circular diameter of 30 μm or more and 300 μm or less and crystal grains B having an equivalent circular diameter of 0.5 μm or more and 3 μm or less. The crystal grains A and the crystal grains B individually form aggregates and the aggregates of the crystal grains A and the aggregates of the crystal grains B form a sea-island structure. | 08-22-2013 |
20130222482 | PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS - The piezoelectric element includes, on a substrate: a piezoelectric film; and a pair of electrodes provided in contact with the piezoelectric film; in which the piezoelectric film contains a perovskite-type metal oxide represented by the general formula (1) as a main component: | 08-29-2013 |
20130241347 | PIEZOELECTRIC CERAMICS, MANUFACTURING METHOD THEREFOR, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST REMOVAL DEVICE - Provided are a barium titanate-based piezoelectric ceramics having satisfactory piezoelectric performance and a satisfactory mechanical quality factor (Q | 09-19-2013 |
20130250417 | VIBRATING APPARATUS, DRIVING APPARATUS HAVING THE VIBRATING APPARATUS, AND OPTICAL DEVICE - A vibration apparatus includes a vibrating body that includes a piezoelectric material having a lead content of less than 1000 ppm, and has an electromechanical energy converting element having an electrode; and a control unit that applies at least two driving voltages to the electromechanical energy converting element, and generates a combined vibration by providing a time phase difference to the vibrating body and generating multiple stable waves having mutually different orders; wherein the control unit changes at least one of the voltage amplitude ratio and time phase difference of at least two driving voltages, so as to change the amplitude distribution of the combined vibration. | 09-26-2013 |
20130270965 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE - Provided is a piezoelectric material that achieves both high piezoelectric performance and high Curie temperature. In addition, provided are a piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust removing device, which use the piezoelectric material. The piezoelectric material includes a perovskite-type metal oxide that is expressed by the following general formula (1): xBaTiO | 10-17-2013 |
20130330541 | METAL OXIDE - Provided is a piezoelectric material excellent in piezoelectricity. The piezoelectric material includes a perovskite-type complex oxide represented by the following General Formula (1). | 12-12-2013 |
20140124695 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS - Provided is a lead-free piezoelectric material having satisfactory and stable piezoelectric constant and mechanical quality factor in a wide practical use temperature range. The piezoelectric material includes a perovskite-type metal oxide represented by Formula (1): (Ba | 05-08-2014 |
20140125199 | PIEZOELECTRIC ELEMENT, OSCILLATORY WAVE MOTOR, AND OPTICAL APPARATUS - A piezoelectric element that can decrease the output voltage for detection relative to the input voltage for driving without requiring a step-down circuit between a detection phase electrode and a phase comparator and an oscillatory wave motor including the piezoelectric element are provided. A piezoelectric element includes a piezoelectric material having a first surface and a second surface, a common electrode disposed on the first surface, and a drive phase electrode and a detection phase electrode disposed on the second surface. An absolute value d(1) of a piezoelectric constant of the piezoelectric material in a portion (1) sandwiched between the drive phase electrode and the common electrode and an absolute value d(2) of a piezoelectric constant of the piezoelectric material in a portion (2) sandwiched between the detection phase electrode and the common electrode satisfy d(2)05-08-2014 | |
20140131611 | PIEZOELECTRIC MATERIAL - A lead-free piezoelectric material that has stable, excellent piezoelectric constant and mechanical quality factor in a wide operating temperature range is provided. A piezoelectric material include a perovskite-type metal oxide represented by (Ba | 05-15-2014 |
20140134038 | ANTI-THERMALLY-EXPANSIVE RESIN AND ANTI-THERMALLY-EXPANSIVE METAL - Provided are resin-based and metal-based anti-thermally-expansive members each having small thermal expansion. More specifically, provided are an anti-thermally-expansive resin and an anti-thermally-expansive metal, each including a resin or a metal having a positive linear expansion coefficient at 20° C. and a solid particle dispersed in the resin or metal, in which the solid particle includes at least an oxide represented by the following general formula (1): (Bi | 05-15-2014 |
20140145106 | PIEZOELECTRIC MATERIAL - A lead-free piezoelectric material that does not undergo depolarization in a wide operating temperature range and has a good piezoelectric constant is provided. A piezoelectric material include a perovskite-type metal oxide represented by (Ba | 05-29-2014 |
20140178290 | BISMUTH IRON OXIDE POWDER, MANUFACTURING METHOD FOR THE BISMUTH IRON OXIDE POWDER, DIELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (A) grains including a bismuth iron oxide having a perovskite-type crystal structure; (B) grains including a bismuth iron oxide having a crystal structure classified to a space group Pbam; and (C) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group I23. The dielectric ceramics are made of bismuth iron oxide in which the bismuth iron oxide crystals having the crystal structure classified to the space group Pbam are distributed at a grain boundary of crystal grains of the bismuth iron oxide crystals having the perovskite-type crystal structure. | 06-26-2014 |
20140218588 | DUST REMOVING DEVICE AND IMAGING DEVICE - Provided is a dust removing device that can be designed and controlled appropriately and has high dust removal performance even at low temperature, and an imaging device using the dust removing device. In a dust removing device to be set on a base, including a piezoelectric element formed of a piezoelectric material and a pair of opposing electrodes, a vibration member, and a fixation member containing at least a high molecular compound component, a phase transition temperature T from a first ferroelectric crystal phase to a second ferroelectric crystal phase of the piezoelectric material is set to −60° C.≦T≦−5° C., and whereby, the dust removing device can be designed and controlled appropriately and high dust removal performance can be obtained even at low temperature. | 08-07-2014 |
20140234643 | THERMAL EXPANSION SUPPRESSING MEMBER AND ANTI-THERMALLY-EXPANSIVE MEMBER - Provided are a thermal expansion suppressing member having negative thermal expansion properties and a metal-based anti-thermally-expansive member having small thermal expansion. More specifically, provided are a thermal expansion suppressing member, including at least an oxide represented by the following general formula (1), and an anti-thermally-expansive member, including a metal having a positive linear expansion coefficient at 20° C., and a solid body including at least an oxide represented by the following general formula (1), the metal and solid being joined to each other: (Bi | 08-21-2014 |
20140292160 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, MULTILAYERED PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, LIQUID EJECTION APPARATUS, ULTRASONIC MOTOR, OPTICAL EQUIPMENT, VIBRATION APPARATUS, DUST REMOVING APPARATUS, IMAGING APPARATUS, AND ELECTRONIC EQUIPMENT - Provided is a lead-free piezoelectric material having a satisfactory and stable piezoelectric constant and electric insulation property in a wide practical temperature range. Provided is a piezoelectric material, including a perovskite-type metal oxide represented by the following general formula (1) as a main component, the piezoelectric material containing Mn in a content of 0.01 part by weight or more and 0.80 part by weight or less with respect to 100 parts by weight of the perovskite-type metal oxide: (Li | 10-02-2014 |
20140354738 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE - Provided is a piezoelectric material having high Curie temperature, high insulation property, and high piezoelectric performance, the piezoelectric material including a perovskite-type metal oxide represented by the general formula (1): xBaTiO | 12-04-2014 |
20150028249 | PIEZOELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE - Provided is a lead-free piezoelectric ceramics having enhanced mechanical quality factor (Qm) and mechanical strength. The piezoelectric ceramics, includes at least a first crystal grain and a second crystal grain. The first crystal grain has an average equivalent circle diameter of 2 μm or more and 30 μm or less. The first crystal grain includes a perovskite-type metal oxide represented by the following general formula (1) as a main component, and the second crystal grain includes a perovskite-type metal oxide represented by the following general formula (2) as a main component: (1) xBaTiO | 01-29-2015 |
20150053884 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS - The present invention provides a lead-free piezoelectric material having a high piezoelectric constant and a high mechanical quality factor in a wide operating temperature range. The piezoelectric material includes a perovskite-type metal oxide represented by Formula (1): | 02-26-2015 |
20150053885 | PIEZOELECTRIC CERAMIC, METHOD FOR MANUFACTURING PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ELECTRONIC DEVICE - A piezoelectric ceramic contains a main component, Mn as a first auxiliary component, and a second auxiliary component containing at least one element selected from the group consisting of Cu, B, and Si. The main component contains a perovskite metal oxide having the following general formula (1): | 02-26-2015 |
20150062257 | SODIUM NIOBATE POWDER, METHOD FOR PRODUCING THE SAME, METHOD FOR PRODUCING CERAMIC, AND PIEZOELECTRIC ELEMENT - A sodium niobate powder includes sodium niobate particles having a shape of a cuboid and having a side average length of 0.1 μm or more and 100 μm or less, wherein at least one face of each of the sodium niobate particles is a (100) plane in the pseudocubic notation and a moisture content of the sodium niobate powder is 0.15 mass % or less. A method for producing a ceramic using the sodium niobate powder is provided. A method for producing a sodium niobate powder includes a step of holding an aqueous alkali dispersion liquid containing a niobium component and a sodium component at a pressure exceeding 0.1 MPa, a step of isolating a solid matter from the aqueous dispersion liquid after the holding, and a step of heat treating the solid matter at 500° C. to 700° C. | 03-05-2015 |
20150304528 | DUST REMOVAL APPARATUS AND IMAGE PICKUP APPARATUS - A dust removal apparatus includes a vibrating plate, a piezoelectric element, a power supply that applies the piezoelectric element with an alternating voltage; and a control circuit that changes a frequency of the alternating voltage, in which the piezoelectric element includes first and second electrodes and a piezoelectric material, a phase transition temperature T from a first crystal phase to a second crystal phase of the piezoelectric material is −40° C.≦T≦85° C., the change of the frequency is for repeating a frequency sweep operation from a first frequency to a second frequency, and when a frequency at which an audible vibration is generated during the sweep operation is set as fns, a frequency at which the audible vibration is ended is set as fne, and a changing time from fns to fne during the sweep operation is set as Δtn, Δtn≦10 ms is satisfied. | 10-22-2015 |
20150349239 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC DEVICE - A piezoelectric material that does not contain lead and has excellent piezoelectric constant and mechanical quality factor in a device driving temperature range (−30° C. to 50° C.) is provided. A piezoelectric material includes a main component containing a perovskite metal oxide represented by following general formula (1), and a first auxiliary component containing Mn, wherein an amount of the contained Mn is 0.002 moles or more and 0.015 moles or less relative to 1 mole of the metal oxide. | 12-03-2015 |
20150349666 | PIEZOELECTRIC ELEMENT, STATOR FOR OSCILLATORY WAVE MOTOR, OSCILLATORY WAVE MOTOR, DRIVING CONTROL SYSTEM, OPTICAL APPARATUS, AND METHOD FOR MAKING STATOR FOR OSCILLATORY WAVE MOTOR - The present invention provides a piezoelectric element that includes a piezoelectric material having first and second surfaces; a common electrode disposed on the first surface; and a plurality of drive phase electrodes, a detection phase electrode, and a non-drive phase electrode disposed on the second surface, the piezoelectric material being sandwiched between the common electrode and the electrodes on the second surface. An absolute value d(1) of a piezoelectric constant of the piezoelectric material (1) in portions sandwiched between the drive phase electrodes and the common electrode, an absolute value d(2) of a piezoelectric constant of the piezoelectric material (2) in a portion sandwiched between the detection phase electrode and the common electrode, and an absolute value d(3) of the piezoelectric material (3) in a portion sandwiched between the non-drive phase electrode and the common electrode satisfy d(2)<0.95d(1), d(3)<0.95d(1), and 0.9≦d(3)/d(2)≦1.1. | 12-03-2015 |
20150364672 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC DEVICE, AND ELECTRONIC APPARATUS - A piezoelectric material that has good insulating properties and piezoelectricity and is free of lead and potassium and a piezoelectric element that uses the piezoelectric material are provided. The piezoelectric material contains copper and a perovskite-type metal oxide represented by general formula (1): (1−x){(Na | 12-17-2015 |
20160103314 | DUST REMOVING DEVICE, MANUFACTURING METHOD FOR SAME, AND IMAGE PICKUP APPARATUS - In a dust removing device including a vibration plate, which includes on its surface an optical effective region B having a substantially right-angled quadrate shape and an outer region A, and a piezoelectric element, when a region positioned in one end portion of the piezoelectric element in a direction along a side O of the piezoelectric element and spanning along the side P over a length b inwards from a line, which is an extension of a side N, N′ of the optical effective region B and which intersects the piezoelectric element, is denoted by an near-end zone σ of the piezoelectric element, an absolute value of piezoelectric constant of the piezoelectric material in a region not including the near-end zone σ, is denoted by d, and an absolute value of the piezoelectric constant in the near-end zone σ is denoted by d | 04-14-2016 |
20160104833 | MANUFACTURING METHOD FOR PIEZOELECTRIC CERAMICS - Provided are a barium titanate-based piezoelectric ceramics having satisfactory piezoelectric performance and a satisfactory mechanical quality factor (Q | 04-14-2016 |
Patent application number | Description | Published |
20080209071 | Network relay method, network relay apparatus, and network relay program - According to an aspect of an embodiment, a method of relaying by network between a plurality of terminal devices and a relay device, comprising:
| 08-28-2008 |
20100115587 | Authentication system and terminal authentication apparatus - After checking a receiving message appearing on an output device, a network administrator inputs an authentication result to a setting terminal using an input device, such as a keyboard. Upon receiving the authentication result from the network administrator, the setting terminal registers, if the received authentication result is permission to access a network device, a MAC address of a traveling employee's terminal that is the sender of the authentication request in the network device as an access permitted terminal. After the registering in the network device is completed, the setting terminal sends the authentication result indicative of permission to access the network device to the employee's terminal, i.e., the sender of the authentication request. | 05-06-2010 |
20100118710 | NETWORK FAILURE DETECTING METHOD AND DEVICE - A network failure detecting method for detecting a failure of a network including a number of transferring devices by tracing data flow rates of the transferring devices based on physical topologies of the transferring devices for the network, composing a group of the transferring devices adjacent to one another, data flow rates of which have failed to be obtained, as one virtual transferring device; and replacing physical topologies of the group of the transferring devices adjacent to one another, data flow rates of which have failed to be obtained, with a physical topology of the composed virtual transferring device. | 05-13-2010 |
20100241715 | METHOD OF REALIZING UNIQUENESS ASSURANCE AND METHOD OF DETERMINING MESSAGE DESTINATION - A method of realizing uniqueness assurance includes: selecting a server to which a first message is to be transferred from multiple servers and transferring the first message to the selected server when the first message is received from a terminal apparatus by a load sharing apparatus; storing a second message that should be transferred to the same server as that of the first server when the second message is received from the terminal apparatus by the load sharing apparatus after the first message is transferred; generating uniqueness assurance information corresponding to the communication protocols corresponding to a session generated by the server to which the first message is transferred, the uniqueness assurance information indicating the correspondence between the session and the message corresponding to the session; and transferring the second message in accordance with the generated uniqueness assurance information if the stored second message exits. | 09-23-2010 |
20110185039 | COMPUTER-READABLE MEDIUM STORING ACCESS CONTROL PROGRAM, ACCESS CONTROL METHOD, AND ACCESS CONTROL DEVICE - An access control device causes an information processing device to execute access control between a client device and two or more server devices. The device receives an open request for causing the information processing device to open the port of a port number that is a port number to be transmitted to the client device according to completion of one process of a plurality of processes to be executed on a first server device which is one of the two or more server devices. The device generates information for data transfer for opening the port of the port number based on information for identifying the first server device which transmitted the open request, which is included in the received open request. The device transmits the generated information for data transfer to the information processing device. | 07-28-2011 |
20110185398 | ACCESS CONTROL SYSTEM AND ACCESS CONTROL METHOD - A system including a providing unit that provides a virtual-desktop-service selected on the basis of an identification information acquired from the terminal apparatus, and sends a message that includes an address of the providing unit and an address of an application program booted by a process of the virtual-desktop-service, a storage unit that stores the identification information associated with the address of the providing unit and an access control information associated with a set of a identification information and an address of an application program, and a relay unit that receives a message sent by the providing unit, acquires an identification information associated with a source address included in the received message, acquires an access control information associated with a set of the acquired identification information and a destination address included in the received message, and controls relaying the message depending on the acquired access control information. | 07-28-2011 |
20120240214 | SYSTEM, METHOD OF AUTHENTICATING INFORMATION MANAGEMENT, AND COMPUTER-READABLE MEDIUM STORING PROGRAM - In response to a service request designating a service identifier, a proxy server reads out at least two processing system identifiers corresponding to the designated service identifier from a first storage unit, and transmits an acquisition request containing the read-out at least two processing identifiers to a management server. The management server acquires respective authentication information items corresponding to the at least two processing identifiers contained in the received acquisition request from a second storage unit, and transmits the acquired authentication information items to the proxy server. The proxy server transmits user authentication requests for respective processing systems containing the received authentication information items to the at least two processing systems, respectively. | 09-20-2012 |
20130243000 | COMMUNICATION PATH CONTROL TECHNIQUE - Upon receipt of a change request to change a path in a first communication and including a label assigned to a path after change and information of a transfer destination after change, a relay apparatus stores the label assigned to the path after change in association with the information of the transfer destination after change into a first storage unit. The relay apparatus then updates a second storage unit so as to change a first label assigned to a path before change in the first communication to the label assigned to the path after change. Upon determining that response messages for a request message transferred on the path before change have been received without omission with respect to the first communication, the relay apparatus deletes the first label assigned to the path before change and information of a transfer destination corresponding to the first label from the first storage unit. | 09-19-2013 |
20140198792 | RECORDING MEDIUM HAVING STORED THEREIN A TRANSFER PROGRAM, TRANSFER APPARATUS, AND TRANSFER METHOD - A non-transitory computer-readable recording medium has stored therein a program for causing a computer to execute a process, the process includes transferring communication data, transmitted from a first apparatus, which includes data and a first attribute regarding the data, to a second apparatus, receiving a notification that includes a second attribute regarding the data and a transfer destination of the communication data inclusive of the second attribute, transferring the communication data inclusive of the second attribute to a third apparatus of the transfer destination included in the notification; and transferring the notification to other transfer apparatus. | 07-17-2014 |
20140289311 | PROXY ASSIGNMENT APPARATUS AND METHOD FOR ASSIGNING PROXY - A proxy assignment apparatus includes a processor or wired logic hardware configured to detect a first data request issued from a terminal apparatus for requesting first data. The processor or wired logic hardware is configured to determine whether a first proxy server that satisfies a condition exists, wherein the first proxy server corresponds to a media access control address of the terminal apparatus. The processor or wired logic hardware is configured to report a first internet protocol address of the first proxy server to the terminal apparatus when it is determined that the first proxy server exists. | 09-25-2014 |
20140289373 | DATA TRANSFER CONTROL METHOD, RELAY DEVICE, AND DATA TRANSFER CONTROL DEVICE - A transfer path between a sensor and a data processing server is partitioned into at least a first transfer path between the sensor and a first relay device, a second transfer path from the first relay device to a second relay device that transfers the data transmitted from the first sensor, and a third transfer path between the second relay device and the data processing server. A data transfer between each of the sensors and the data processing server is implemented by respectively controlling a pair of the first transfer path and the second transfer path, and a pair of the second transfer path and the third transfer path. | 09-25-2014 |
20150281074 | DATA TRANSFER CONTROL DEVICE AND DATA TRANSFER CONTROL METHOD - A data transfer control device is provided with a storage configured to store management information that manages a topology of relay devices and a delay of a link between each adjacent relay devices where a link exists, and a processor executing the processing of specifying a main signal path and a detouring path that make an accommodation destination device an exit, allocating an identical label value to the main signal paths while allocating a separate label value different from the label value of the main signal path to the detouring paths respectively, generating a rule for a detouring label value management table, and transmitting the rule to relay devices that are subject to distribution. | 10-01-2015 |