摘要:
In a nozzleless ink jet printer, a plate-shaped propagation element for propagating a surface acoustic wave is fixedly mounted on a substrate which is arranged along the platen and has an ink pooling groove, and the ink led to the edge of the propagation element from the ink pooling groove by surface tension is caused to jet in the form of ink mist by surface acoustic waves generated by excitation of comb-shaped interleaved electrodes so as to record images such as characters and patterns on a recording sheet.
摘要:
An ink jet recording head, in which a vibrating element includes electrodes disposed on both surfaces of at least one of its edge portions at a dot forming pitch. A gap forming member is disposed so as to form a gap suitable for producing ink mist on a surface confronting a vibrating surface of the vibrating element. Since the ink is retained in this gap by surface tension, upon application of an alternate voltage to the vibrating element to produce an edge-mode vibration, the vibration produced at a piezoelectric body substrate is transmitted to the ink, propagating through the ink. The vibration propagated up to an interface between the ink and the air is transformed into a surface wave, thereby misting the ink.The thus produced ink mist, having vibrational kinetic energy, splashes in the air and thus forms a dot on a recording sheet. Since the amount of ink adhering to the recording sheet is proportional to an ink mist producing time, the optical density of a dot can be adjusted by controlling the alternate voltage application time.
摘要:
A method of manufacturing a liquid jet head includes depositing a lower electrode film on a passage forming substrate and patterning the lower electrode film into a predetermined pattern, forming a piezoelectric layer on the passage forming substrate, forming an intermediate film made of a conductive material on the piezoelectric layer, forming a protective film on the intermediate film and, using the protective film as a mask, patterning by etching the piezoelectric layer together with the intermediate film into a predetermined pattern, peeling off the protective film, and depositing an upper electrode film on the passage forming substrate and patterning the upper electrode film into a predetermined pattern.
摘要:
A method of manufacturing an actuator apparatus includes forming, on the base plate, a test pattern that is electrically discontinuous with the electrodes of the piezoelectric element and has the same layer as the lower electrode, the test pattern having the lower electrode with the upper electrode and the piezoelectric material layer removed by etching, and measuring electric resistance of the lower electrode of the test pattern to acquire the etch amount of the lower electrode when the piezoelectric element is formed.
摘要:
Provided is a method for manufacturing a piezoelectric element that has excellent piezoelectric characteristics and can be made into a thicker film. A piezoelectric thin film is crystallized by a process in which piezoelectric precursor films 4021 through 4025 containing the metal elements of a piezoelectric ceramic are coated with a material, dried, pyrolyzed, and then heat-treated under prescribed conditions in a diffusion furnace. With this method, a piezoelectric thin film can be made into a thicker film without initiating cracking.
摘要:
A piezoelectric actuator, made of a substrate and a piezoelectric film layer resistant to erosion is provided. The area of the piezoelectric actuator can be enlarged, and has a flat top surface. The present invention further provides an ink jet printing head, a printer, a method for manufacturing a piezoelectric actuator, and a method for manufacturing an ink jet printing head. The piezoelectric actuator includes a piezoelectric film disposed between a lower electrode and an upper electrode. Columnar crystal grains of piezoelectric ceramic which compose the piezoelectric actuator are random-oriented in a film thickness direction, and have a mean diameter in the range of 100 nm to 15,000 nm. The method for manufacturing the actuator includes the step of forming precursor films, which are composed of metal and oxygen, over a lower electrode, providing a hydrothermal treatment by dipping the precursor films in an alkaline solution, which as 2 M[mol/l] or less, more preferably 0.1 M[mol/l] or less, concentration of a given alkaline solute, and promoting the crystallization under certain conditions.
摘要:
Disclosed are an ink-jet recording head in which rigidity of a compartment wall is improved and pressure generating chambers are arranged in a high density, a manufacturing method and an ink-jet recording apparatus thereof. An ink-jet recording head includes: a passage-forming substrate 10 having at least silicon layer that consists of single crystal silicon and pressure generating chambers 12 defined thereon, which communicate with a nozzle orifice 21; and a piezoelectric element 300 for generating a pressure change in the pressure generating chamber 12, the piezoelectric element 300 being provided in a region opposite the pressure generating chamber 12 via a vibration plate, which constitutes a portion of the pressure generating chamber 12. The ink-jet recording head further includes a joining plate 20 joined to the passage-forming substrate 10 on the surface where the piezoelectric element 300 is formed, and the nozzle orifice 21 is provided on the joining plate 20.
摘要:
An ink jet recording head comprises: a passage form substrate having, a diaphragm forming a part of a pressure generating chamber communicating with a nozzle aperture and at least the upper surface of which acts as a lower electrode, and a piezoelectric vibrator including a piezoelectric material layer formed on the surface of the diaphragm, an upper electrode formed on the surface of the piezoelectric material layer and a piezoelectric active part formed in an area opposite to the pressure generating chamber; a cap member joined to the side of the piezoelectric material layer of the passage formed substrate for sealing space in a state in which space to extent that a movement is not prevented is secured; and a flexible portion for absorbing the change of pressure in the space of the cap member.
摘要:
A method of manufacturing a piezoelectric element includes a piezoelectric layer forming step of sequentially and repeatedly performing a heat treatment step of applying a piezoelectric material containing lead to a lower electrode film at a relative humidity in the range of 30% to 50% Rh and then performing a heat treatment to form a piezoelectric precursor film and a crystallization step of firing the piezoelectric precursor film to form a piezoelectric film on the lower electrode film, thereby forming a piezoelectric layer.
摘要:
A method for producing an actuator device, comprising the steps of: forming a vibration plate on a substrate; and forming a piezoelectric element composed of a lower electrode, a piezoelectric layer, and an upper electrode on the vibration plate, wherein in the step of forming the piezoelectric element, the upper electrode is formed on the piezoelectric layer by sputtering, a temperature of 25 to 250 (° C.) and a pressure of 0.4 to 1.5 (Pa) are used during the sputtering, and upon the sputtering, the upper electrode having a thickness of 30 to 100 (nm), stress of 0.3 to 2.0 (GPa), and specific resistance of 2.0 (×10−7 Ω·m) or less is formed.