摘要:
PROBLEM TO BE SOLVED: To provide a liquid ejection head in which production cost is reduced by decreasing the external width of a head and a driving IC and production quality is enhanced by protecting a sealing substrate against thermal damage thereby sealing a piezoelectric element holding part easily and surely, and to provide its manufacturing process and a liquid ejector. SOLUTION: ICs 110 for driving piezoelectric elements are provided on a sealing substrate 30 independently for each array. In the region between piezoelectric element holding parts 31 juxtaposed for each array of the sealing substrate 30, through holes 34 for connecting the driving ICs 110 electrically with discrete electrodes of the piezoelectric element are provided on the sealing substrate 30 while being divided in the juxtaposing direction of the piezoelectric elements. In the divided region of the through hole 34, a sealing hole 35 penetrating in the thickness direction is provided along with a sealing passage 36 made in the surface being bonded to a channel forming substrate in the region provided with the sealing hole 35 and having one end communicating with the sealing hole 35 and the other end communicating with the piezoelectric element holding part 31. COPYRIGHT: (C)2004,JPO
摘要:
PROBLEM TO BE SOLVED: To provide an ink jet recording head, its manufacturing method and an ink jet recorder in which deformation and cracking of a substrate are prevented. SOLUTION: The ink jet recording head comprises a nozzle plate 20 having a plurality of nozzle openings, a channel forming substrate 10 where pressure generating chambers 12 communicating with the nozzle openings 21 are defined, and piezoelectric elements 300 provided on one side of the channel forming substrate 10 through a diaphragm and generating a pressure variation in the pressure generating chambers 12. A reservoir forming substrate 30 having a reservoir part 31 constituting at least a part of a reservoir 150 becoming a common ink chamber for respective pressure generating chambers 12 is bonded to the piezoelectric element 300 side of the channel forming substrate 10, and mounting parts 110 being connected with an external wire 100 for driving the piezoelectric elements 300 are provided on the channel forming substrate 10 and a mounting substrate 120 made of a member different from that of the reservoir forming substrate 30 thus preventing the channel forming substrate 10 and the reservoir forming substrate 30 from cracking by heat at the time of connecting the external wire 100. COPYRIGHT: (C)2003,JPO
摘要:
PROBLEM TO BE SOLVED: To provide a liquid jetting head having improved drive durability, liquid jetting device, and actuator device. SOLUTION: Reinforcing portions 65 composed of a material harder than the film forming a first electrode 60 are provided in the regions on the first electrode 60, wherein the regions correspond to both-end portions of a piezoelectric layer 70 in the width-direction of a piezoelectric element 300. The thickness of the reinforcing portions 65 is gradually reduced toward the inside of the width direction of the piezoelectric element 300. COPYRIGHT: (C)2011,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To manufacture a liquid discharge head suppressed in the change of the displacing amount of a piezoelectric element by giving no load higher than that at the time of a real use to the piezoelectric element etc. in an aging process and having a stable ink discharge characteristic. SOLUTION: This manufacturing method of the liquid discharge head having a channel forming substrate 10 formed of a pressure generating chamber 12 communicating with a nozzle opening 21 for injecting liquid, and a piezoelectric element 300 formed of a lower electrode 60, a piezoelectric element layer 70 and an upper electrode 80 provided on one surface side of the channel forming substrate 10 has a piezoelectric element forming step of forming the piezoelectric element 300 on the channel forming substrate 10, an aging step of driving the piezoelectric element 300 by inputting a drive signal to the piezoelectric element 300 formed by the piezoelectric element forming step, and a pressure generating chamber forming step of forming the pressure generating chamber 12 on the channel forming substrate 10 wherein the aging step is performed in a restricting state that the restricting member for more restricting the displacement of the piezoelectric element 300 as compared with that at the time of the actual use is provided in the piezoelectric element 300. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a piezoelectric element which shows an improved displacement quantity, a liquid jet head using the piezoelectric element, and a liquid jet device. SOLUTION: The piezoelectric element includes a lower electrode film 60 disposed on one surface of a board, a piezoelectric layer 70 made of a piezoelectric material in which piezoelectric layer 70 is formed on the lower electrode film 60, and an upper electrode film 80 formed on the piezoelectric layer 70. The hardness of the upper electrode film 80 is determined to be 14 GPa or less. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a piezoelectric body thin film element that does not generate cracks in film during production, has a high piezo-electric constant, and is excellent in adhesion with a lower electrode; and to provide an ink jet recording head capable of performing a high definition printing using such a piezoelectric body thin film element. SOLUTION: The piezoelectric body thin film element is one configured by including a piezoelectric body film comprising a polycrystal of thickness of 0.5-25 μm and two electrodes that sandwich the piezoelectric body film, air holes are present in the piezoelectric body film, an average diameter of the air holes is 0.01 μm or more, and the surface density is 0.3% or more. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a ferroelectric thin film with excellent ferroelectric characteristics without microcrystalline particles in the film, a manufacturing method of piezoelectric element, and a composition for formation of a ferroelectric thin film. SOLUTION: In the method, a precursor film made of a composition for forming a ferroelectric thin film at least containing colloidal solution containing at least Pb as a material constituting the ferroelectric thin film and a carbon material is formed on an object for treatment, and is crystallized to form the ferroelectric thin film, at which time, a temperature-raising speed is to be 120°C/sec or more. Further, the manufacturing method of the piezoelectric element and the composition for formation of the ferroelectric thin film are also disclosed. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a piezoelectric thin film element which dose not generate a crack in a film during manufacturing, has a high piezoelectric strain constant, and has good close contactness with a lower electrode; and to further provide an inkjet recording head using such piezoelectric thin film element, the inkjet recording head being capable of high resolution printing. SOLUTION: The piezoelectric thin film element includes a piezoelectric film made of a polycrystal body, and an upper electrode and a lower electrode that are arranged by sandwiching the piezoelectric film. A crystal body of the piezoelectric film is formed in a direction substantially perpendicular to the electrode surfaces. COPYRIGHT: (C)2011,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide an actuator device having improved response properties of vibration and durability, and to provide a fluid injecting head. SOLUTION: The actuator device has a piezoelectric element comprising a lower electrode provided at one surface side of a substrate, a piezoelectric layer provided on the lower electrode, and an upper electrode provided on the piezoelectric layer; and the lower electrode. The lower electrode has a density elasticity adjustment layer made of an alloy of Pt and TiO X (0.1≤x≤2). COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a process for manufacturing a piezoelectric element in which uniformity of piezoelectric characteristics can be enhanced. SOLUTION: The process for manufacturing a piezoelectric element comprises a step for drying sol of organic metal, and a step for degreasing it where a substrate 512 is heated by applying one side of the substrate entirely and tightly to a hot plate 100. More specifically, there are a method employing a substrate suction type hot plate equipped with a small hole 104, and a method for applying a load by means of a weight 101. Alternatively, the substrate 512 may be pressed tightly onto a metal plate 105 and mounted on the hot plate 100 with warp being corrected. Furthermore, it may be heated not through heat conduction but through radiation by placing a ceramic plate 102 on the hot plate 100 or using an electric heating wire 103. COPYRIGHT: (C)2008,JPO&INPIT