Patent application number | Description | Published |
20080239016 | LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS - A liquid discharge head is provided, which includes a piezoelectric element for which the polarization characteristic can be recovered without having to apply an electrical field in a direction opposite to that in which an electrical field is to be applied during driving. A piezoelectric element provided for a liquid discharge head of the present invention includes a field-polarization hysteresis characteristic that has, at the least, one hysteresis loop. A saturation polarization point and a critical polarization point, on one hysteresis loop for the hysteresis characteristic, are positioned in the same field polarity, and different signs are provided for a polarization value at the saturation polarization point and for the polarization value at the critical polarization point. | 10-02-2008 |
20090021562 | LIQUID EJECTION HEAD AND RECORDING APPARATUS - An ink jet recording head includes a plurality of ejection outlets for ejecting liquid; individual liquid chambers communicating with the plurality of ejection outlets; ejection energy generating elements, provided correspondingly to associated ones of the individual liquid chambers, for generating energy for ejecting the liquid; a common liquid chamber for supplying the liquid to the plurality of individual liquid chambers; and communicating paths constituting flow paths for communicating associated ones of the individual liquid chambers and the common liquid chamber with each other. At least adjacent ones of the flow paths have communicating positions, at different portions as seen in a direction perpendicular to a direction of ejection of the liquid trough the ejection outlets, with said common liquid chamber. | 01-22-2009 |
20090026408 | PIEZOELECTRIC MATERIAL - The present invention provides a piezoelectric material which can be applied even to the MEMS technique, exhibits satisfactory piezoelectricity even at high ambient temperatures and is environmentally clean, namely, a piezoelectric material including an oxide obtained by forming a solid solution composed of two perovskite oxides A(1)B(1)O | 01-29-2009 |
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 |
20100155646 | PIEZOELECTRIC MATERIAL - Provided is a piezoelectric material in which the product of the piezoelectric constant and the Young's modulus is large to give excellent piezoelectricity without using lead. A piezoelectric material including a perovskite type crystal represented by a compositional formula of ABO | 06-24-2010 |
20100155647 | OXYNITRIDE PIEZOELECTRIC MATERIAL AND METHOD OF PRODUCING THE SAME - Provided are an oxynitride piezoelectric material which exhibits ferroelectricity and has good piezoelectric properties and a method of producing the oxynitride piezoelectric material. The oxynitride piezoelectric material includes a tetragonal perovskite-type oxynitride represented by the following general formula (1): | 06-24-2010 |
20100225709 | PIEZOELECTRIC ELEMENT, AND LIQUID EJECTION HEAD AND RECORDING APPARATUS USING THE PIEZOELECTRIC ELEMENT - Provided are a piezoelectric element that can effectively utilize a piezoelectric constant d | 09-09-2010 |
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 |
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 | |
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 |
20130278681 | PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE - There is provided a lead-free piezoelectric ceramic having a high and stable piezoelectric constant and a high and stable mechanical quality factor in a wide operating temperature range. A method for manufacturing the lead-free piezoelectric ceramic is also provided. the general formula (1) | 10-24-2013 |
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 |
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 |
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 |