摘要:
Provided is a liquid jet head, a method of manufacturing the same, and a liquid jet apparatus, in which liquid ejecting characteristics can be kept constant for a long period and in which nozzle blockage is prevented. In a liquid jet head including a passage-forming substrate (10) which is made of a single crystal silicon substrate and in which pressure generating chambers (12) communicating with nozzle orifices are formed, and pressure generating elements (300) for causing pressure changes in the pressure generating chambers (12), a protective film (100) which is made of tantalum oxide and has resistance to liquid, is provided at least on the inner wall surfaces of the pressure generating chambers (12).
摘要:
A method is provided for manufacturing a piezoelectric device including a piezoelectric element 300 that is disposed above a diaphragm 50 and that has a multilayer structure including a first electrode 60 disposed above the diaphragm, a piezoelectric layer 70 disposed on the first electrode, and a second electrode 80 disposed on the piezoelectric layer. The method includes forming the multilayer structure including the first electrode, the piezoelectric layer, and the second electrode above the diaphragm, forming a voltage application electrode 95 extending outwardly from an end of the second electrode to cover a region located above the piezoelectric layer in an inactive section 320 having no second electrode, applying a voltage between the first electrode and the second electrode, and removing the voltage application electrode 95.
摘要:
An ink jet recording head in which the rigidity of a partition wall is enhanced, pressure generating chambers can be arranged at high density, and the crosstalk between the pressure generating chambers can be reduced, a method for generating the ink jet recording head, and an ink jet recorder. An ink jet recording head comprising a channel forming substrate (10) having a silicon layer of single crystal silicon in which a pressure generating chamber (15) communicating with a nozzle opening is defined, and a piezoelectric element (300) provided in a region facing the pressure generating chamber (15) through a diaphragm constituting a part of the pressure generating chamber (15) and generating a pressure variation in the pressure generating chamber (15), wherein the pressure generating chamber (15) has an opening in one face side of the channel forming substrate (10) but not through the channel forming substrate (10). At least the bottom face of the inside of the pressure generating chamber (15) facing the one face side is constituted of an anisotropic etching stop face which is a surface subjected to anisotropic etching stopped in mid course and the piezoelectric element (300) composed of a film formed by film formation and lithography is provided on the one face side of the channel forming substrate (10).
摘要:
Disclosed are an ink-jet recording head, in which the rigidity of the compartment wall is improved, pressure generating chambers can be arranged in a high density, and cross talk between the pressure generating chambers is reduced, and a manufacturing method of the same and an ink-jet recording apparatus. In an ink-jet recording head comprising: a passage-forming substrate (10) having a silicon layer consisting of single crystal silicon, in which a pressure generating chamber (15) communicating with a nozzle orifice is defined; and a piezoelectric element (300) for generating a pressure change in the pressure generating chamber, the piezoelectric element being provided on a region facing the pressure generating chamber (15) via a vibration plate constituting a part of the pressure generating chamber (15), the pressure generating chamber (15) is formed so as to open to one surface of the passage-forming substrate (10) and not to penetrate therethrough, at least a bottom surface of inner surfaces of the pressure generating chamber (15), which is facing to the one surface, is constituted of an etching stop surface as a surface in which anisotropic etching stops, and the piezoelectric element (300) is provided on the one surface side of the passage-forming substrate (10) by a film formed by film deposition technology and a lithography method.
摘要:
A method is provided for manufacturing a piezoelectric device including a piezoelectric element 300 that is disposed above a diaphragm 50 and that has a multilayer structure including a first electrode 60 disposed above the diaphragm, a piezoelectric layer 70 disposed on the first electrode, and a second electrode 80 disposed on the piezoelectric layer. The method includes forming the multilayer structure including the first electrode, the piezoelectric layer, and the second electrode above the diaphragm, forming a voltage application electrode 95 extending outwardly from an end of the second electrode to cover a region located above the piezoelectric layer in an inactive section 320 having no second electrode, applying a voltage between the first electrode and the second electrode, and removing the voltage application electrode 95.
摘要:
A piezoelectric thin-film device is disclosed which comprises: a piezoelectric film of a polycrystalline material; and two electrodes, the piezoelectric film being sandwiched between the two electrodes, wherein the piezoelectric film comprises a three-component PZT containing 5% by mole or more of a third component and having a thickness of not more than 5µm, and the deviation of Pb content of the piezoelectric film in the thicknesswise direction thereof is within ±5%. The piezoelectric thin-film device has good properties, and the use of the piezoelectric thin-film device realizes miniaturization and increase in resolution of a head for ink jet recording. Further, the piezoelectric device has an additional advantage that an ink can be ejected at a high pressure and, further, driving at a high frequency is possible.