Patent application number | Description | Published |
20080224571 | PIEZOELECTRIC ELEMENT, LIQUID JET HEAD AND PRINTER - A piezoelectric element includes: a base substrate; a lower electrode formed above the base substrate; a piezoelectric layer that is formed above the lower electrode, and formed from a perovskite type oxide; and an upper electrode formed above the piezoelectric layer, wherein the piezoelectric layer is oriented to (100) crystal orientation in the pseudo-cubic crystal expression, and a crystal of the perovskite type oxide in a direction parallel to a lower surface of the piezoelectric layer has a lattice constant greater than a lattice constant of the crystal of the perovskite type oxide in a direction orthogonal to the lower surface of the piezoelectric layer. | 09-18-2008 |
20110148992 | PIEZOELECTRIC ELEMENT, LIQUID JET HEAD AND PRINTER - A piezoelectric element includes: a base substrate; a lower electrode formed above the base substrate; a piezoelectric layer that is formed above the lower electrode, and formed from a perovskite type oxide; and an upper electrode formed above the piezoelectric layer, wherein the piezoelectric layer is oriented to (100) crystal orientation in the pseudo-cubic crystal expression, and a crystal of the perovskite type oxide in a direction parallel to a lower surface of the piezoelectric layer has a lattice constant greater than a lattice constant of the crystal of the perovskite type oxide in a direction orthogonal to the lower surface of the piezoelectric layer. | 06-23-2011 |
20130027470 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - The liquid ejecting head includes a nozzle plate in which nozzle holes which are through holes are formed, and ejects liquid from the nozzle holes. The nozzle hole has a first nozzle portion which is opened to an ejection surface to which liquid is ejected from nozzles of the nozzle plate, and a second nozzle portion which communicates with the first nozzle portion, and is opened to a surface opposite to the ejection surface of the nozzle plate, and of which the opening diameter is larger than the opening diameter in the ejection surface of the first nozzle portion. The first nozzle portion is covered with a liquid repellent film which has higher liquid repellency than a base material of the nozzle plate and an inner wall of the second nozzle portion is provided with a region which has lower liquid repellency than the liquid repellent film. | 01-31-2013 |
20130194353 | LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber. | 08-01-2013 |
20140210916 | LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber. | 07-31-2014 |
20150085024 | LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber. | 03-26-2015 |
20150226754 | STIMULUS-RESPONSIVE GEL MATERIAL - A stimulus-responsive gel material includes: a polymeric material containing as constituent components, a first monomer having a chemical structure represented by the following formula (1) and a second monomer having higher hydrophobicity than the first monomer; fine particles having an average particle diameter of 10 nm or more and 1000 nm or less; and a solvent, wherein the wavelength of a reflected light from the material changes according to the concentration of salt to come in contact with the material. | 08-13-2015 |
20150367643 | LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber. | 12-24-2015 |