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公开(公告)号：US4223998A
公开(公告)日：1980-09-23
申请号：US702571
申请日：1976-07-06
申请人： Joachim Heinzl
发明人： Joachim Heinzl
IPC分类号： B41J2/045 , B41J2/025 , B41J2/055 , B41J2/16 , H01L41/00 , H01L41/09 , H02N2/00 , H01V7/00 , B41J3/04
CPC分类号： B41J2/1429 , B41J2/025
摘要： A cylindrical tubular piezo-electric actuating element for recording heads, particularly in mosaic-type recording equipment in which a recording ink or fluid, contained in a compression chamber surrounded by the cylindrical actuating element, is forced out in droplets by piezo-electric constriction of the actuating element, the latter having dimensions which are such that the quotient derived from the wall thickness and the arithmetic mean of the internal and external diameters of the element matches the Poisson number (.mu.) of the piezo-electric material employed, whereby maximum constriction of the internal diameter is effected with no change in the external diameter of the actuating element.
摘要翻译： 一种用于记录头的圆柱形管状压电致动元件，特别是马赛克式记录设备，其中包含在由圆柱形致动元件包围的压缩室中的记录油墨或流体通过压电收缩而被液滴压出 驱动元件的尺寸使得源自壁厚的商和元件的内部和外部直径的算术平均值与使用的压电材料的泊松数（μ）相匹配，由此最大收缩 内径的变化不受致动元件的外径的影响。
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公开(公告)号：US4188635A
公开(公告)日：1980-02-12
申请号：US839093
申请日：1977-10-03
CPC分类号： B41J2/025
摘要： An ink jet printing head comprising a head body made from a material having high specific stiffness and the head body includes an ink passage which is kept small to retain the high body stiffness. The ink passage comprises a narrow slot connected with internal holes in the body which lead to ink inlet and exit ports. A nozzle plate having a plurality of orifices is fixed to the front of the head body and a piezoelectric crystal is fixed to the back of the head body. The piezoelectric crystal is kept thin compared to the head thickness, typically on the order of 1/20 to 1/30 of the body thickness, so that the effect of the crystal on the resonant characteristics of the assembly is kept small. The ink jet head provides a plurality of columns or jets of ink which are excited in such a way as to break up into uniformly and equally spaced drops at a fixed distance from the nozzle plate containing the orifices which produce the jets.
摘要翻译： 一种喷墨打印头，包括由具有高刚度的材料制成的头部主体和头部主体，其包括保持较小以保持高身体刚度的墨水通道。 油墨通道包括与主体中的内部孔连接的窄槽，其通向油墨入口和出口。 具有多个孔的喷嘴板固定在头体的前部，压电晶体固定在头部本体的背面。 与头部厚度相比，压电晶体保持薄，通常为体厚的1/20至1/30，使得晶体对组件的谐振特性的影响保持较小。 喷墨头提供多个喷嘴或喷嘴，其以这样一种方式被激发，以便在与包含产生喷嘴的喷嘴的喷嘴板固定的距离处分裂成均匀等间隔的液滴。
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公开(公告)号：US4032928A
公开(公告)日：1977-06-28
申请号：US713763
申请日：1976-08-12
申请人： John T. White , Kenneth T. Lovelady
发明人： John T. White , Kenneth T. Lovelady
CPC分类号： G01D15/18 , B41J2/025 , Y10T29/49401
摘要： A modulator for ink jet printers is provided for operation over a wide bandwidth of high frequency drop rates. The longitudinal dimensions of each part of the modulator are made small compared to the wavelength of the shortest standing longitudinal acoustic wave that may be produced in a structure of the same material as the part in question. A piezoelectric crystal is seated within a mount acoustically decoupled at the edges therof. An electrode is axially aligned with the crystal and placed in contact with the crystal. A short hollow cylinder forms an ink chamber axially aligned with the crystal. The end of the ink chamber opposite the crystal is closed by a front plate having a nozzle axially located therein.Plural nozzles may be utilized to produce parallel ink streams which break into droplets at substantially the same time and at a near uniform distance from the nozzles.
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公开(公告)号：US3836913A
公开(公告)日：1974-09-17
申请号：US31707572
申请日：1972-12-20
申请人： MEAD CORP
发明人： BURNETT M , BRADY C , DUFFIELD P , HOUSER P
CPC分类号： B41J2/16552 , B41J2/025 , B41J2/16585
摘要： There is disclosed a recording head for a jet array recorder wherein the electrical components thereof are attached to a supporting yoke and the fluidic components thereof are suspended within the yoke. The primary fluidic components are separately assembled as a manifold subassembly and suspended inside a wobble plate. The wobble plate in turn is inserted inside an inner yoke, and rides within an O-ring which provides freedom of movement for vertical adjustment and tilting. Thus the manifold subassembly, which includes an orifice plate provided with one or more rows of jet orifices, may be accurately positioned with respect to the inner yoke. In final assembly the inner yoke is mounted inside the main supporting yoke to which the electrical components have been attached and aligned. A set of dowel pins is provided to insure alignment between the inner yoke and the outer yoke. There is also disclosed means for supplying a flow of purging air through the recording head and a magnetic catcher mounting arrangement. The purging air is supplied to an air tube fitting which attaches to the manifold subassembly. In the completed assembly the air flows around the outside of the orifice plate and then exits the recording head by flowing outwardly through apertures in a charge ring plate which is fastened to the lower surface of the main yoke. The catchers are mounted below the charge ring plate by attraction to a set of permanent magnets which are set into the lower surface of the main yoke.
摘要翻译： 公开了一种用于喷气阵列记录器的记录头，其中其电气部件附接到支撑轭，并且其流体部件悬挂在轭架内。 主要流体组件分别组装成歧管组件并悬挂在摆盘内。 摇摆板又被插入内轭内，并且在O形环内骑行，其提供用于垂直调节和倾斜的运动自由度。 因此，包括设置有一排或多排喷射孔的孔板的歧管组件可以相对于内磁轭被精确地定位。 在最终组装中，内部磁轭安装在电气部件已经被附接和对准的主支撑轭内。 提供一组定位销以确保内轭和外轭之间的对准。
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公开(公告)号：US3667678A
公开(公告)日：1972-06-06
申请号：US3667678D
申请日：1970-03-13
申请人： IBM
发明人： HASKELL JOHN W
CPC分类号： B41J2/025
摘要： An ink jet nozzle structure comprising a thin tube, connected to a pressurized ink reservoir, is encircled by an A. C. driven coil which induces longitudinal reciprocating motion to cause formation of ink droplets. A permanent magnet is in the proximity of the drive coil provides a biasing action. The tube length is chosen so as to permit it to vibrate resonantly at the frequency of the induced longitudinal reciprocating motion. Resonant vibration permits the tube to be supported at two points along its length greatly increasing its mechanical stability. An air damper located near the tip of the nozzle broadens the resonant response and provides differential signals proportional to the longitudinal movement of the tube to maintain movements at a fixed or preset level.
摘要翻译： 包括连接到加压墨水储存器的薄管的喷墨喷嘴结构由A.C驱动的线圈包围，该线圈引起纵向往复运动以引起墨滴的形成。 永磁体在驱动线圈附近提供偏置动作。 选择管长度以使其能够以感应的纵向往复运动的频率共振地振动。 共鸣振动允许管沿其长度的两个点被支撑，大大提高了其机械稳定性。 位于喷嘴尖端附近的空气阻尼器使共振响应变宽，并提供与管的纵向运动成比例的差分信号，以将运动维持在固定或预设水平。
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公开(公告)号：US20230302817A1
公开(公告)日：2023-09-28
申请号：US18186983
申请日：2023-03-21
发明人： Kazuya KITADA , Yoichi TANAKA , Takayuki YOKOYAMA
CPC分类号： B41J2/2121 , B41J11/007 , B41J2/14032 , B41J2/14233 , B41J2/025 , B41J25/001 , B41J2/04541
摘要： A droplet discharging head executes multi-path recording in which dot recording in one main scanning line is completed by n main scans when n is an integer of 2 or more. The droplet discharging head includes: a plurality of nozzles configured to discharge a liquid as droplets; a pressure chamber defining substrate defining a pressure chamber communicating with the nozzles; a piezoelectric element including a first electrode, a second electrode, and a piezoelectric layer containing a perovskite-type composite oxide containing K, Na, and Nb as a main component; and a vibration plate forming a part of a wall surface of the pressure chamber and configured to vibrate by driving of the piezoelectric element. The number of paths n in the multi-path recording, a piezoelectric constant d31 [m/v] of the piezoelectric element, and a ratio x of a Na molar fraction to a total value of a K molar fraction and the Na molar fraction in the piezoelectric layer satisfy a relationship represented by a formula (1).
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公开(公告)号：US20220212468A1
公开(公告)日：2022-07-07
申请号：US17575013
申请日：2022-01-13
发明人： Nigel Sherman , David Horsnell , Robert Smith , David Doswell , Steven Harris
摘要： A binary array ink jet printhead assembly includes a cavity for containing ink, nozzle orifices in fluid communication with the cavity for passing the ink from the cavity to form droplets, the nozzle orifices extending along a length of the cavity, and an electrode assembly. The electrode assembly includes a front face configured to be disposed generally parallel to a plurality of droplet paths of droplets from the nozzle orifices. A plurality of charge electrodes are disposed on the front face, each charge electrode corresponding to a droplet path and disposed parallel to the droplet path. Circuitry is disposed on the electrode assembly, wherein each electrode is electrically connected to the circuitry. The circuitry is further in electrical connection to a connector for connecting the electrode assembly to a controller for the printhead.
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公开(公告)号：US20200023328A1
公开(公告)日：2020-01-23
申请号：US16435779
申请日：2019-06-10
申请人： Yuzuru KURAMOCHI , Daisuke TAKAGI , Satoshi OKANO , Takahiko MATSUMOTO , Koichi MURAMATSU , Satoshi NAKAZAWA , Ryuya MASHIKO , Manabu SEO , Hidekazu YAGINUMA , Mayuko MURANO
发明人： Yuzuru KURAMOCHI , Daisuke TAKAGI , Satoshi OKANO , Takahiko MATSUMOTO , Koichi MURAMATSU , Satoshi NAKAZAWA , Ryuya MASHIKO , Manabu SEO , Hidekazu YAGINUMA , Mayuko MURANO
摘要： A droplet forming device is provided. The droplet forming device includes a liquid holder configured to hold a liquid, a film having a discharge hole, two or more vibration generators configured to vibrate the film, and a driver configured to apply a driving signal to the vibration generators. One or more of the vibration generators are disposed in each region on the film where a polarity of bending moment differs.
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公开(公告)号：US10308013B1
公开(公告)日：2019-06-04
申请号：US15831955
申请日：2017-12-05
IPC分类号： B41J2/085 , B41J2/105 , B41J2/02 , B41J2/03 , B41J2/025 , B41J2/09 , B41J2/115 , B41J2/075 , B41J2/14 , B41J2/095 , B41J2/08 , B41J2/07
摘要： An inkjet printhead includes two groups of interleaved nozzles. First and second sets of drop-formation waveforms are associated with the groups of nozzles to selectively cause portions of a liquid jet to break off into drops. A timing delay device time-shifts the second-group waveforms relative to those associated with the first-group waveforms. A charging-electrode waveform having portions with first and second potentials is provided to a charging electrode. The waveform energies of the second-group waveforms is larger than the waveform energies of the corresponding first-group waveforms so that printing drops break off from the liquid jets while the charging-electrode is at the first potential, and non-printing drops break off from the liquid jets while the charging-electrode is at the second potential.
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公开(公告)号：US20110265297A1
公开(公告)日：2011-11-03
申请号：US13064569
申请日：2011-03-31
申请人： Pil Joong Kang , Yoon Sok Park , Suk Ho Song , Jae Woo Joung
发明人： Pil Joong Kang , Yoon Sok Park , Suk Ho Song , Jae Woo Joung
CPC分类号： B41J2/14233 , B41J2/161 , B41J2/1631 , B41J2/1632 , B41J2/1634 , Y10T29/42 , Y10T29/49401
摘要： There is provided a method of manufacturing an inkjet head. A method of manufacturing an inkjet head according to an aspect of the invention may include: forming a piezoelectric actuator on a dummy substrate; cutting the piezoelectric actuator into head cell units of an inkjet head; preparing an inkjet head substrate including an ink chamber formed at a position corresponding to the piezoelectric actuator; bonding the dummy substrate and the inkjet head substrate to each other so that the piezoelectric actuator and the ink chamber correspond to each other; and removing the dummy substrate.
摘要翻译： 提供一种制造喷墨头的方法。 根据本发明的一个方面的喷墨头的制造方法可以包括：在虚设基板上形成压电致动器; 将压电致动器切割成喷墨头的头单元单元; 制备包括形成在与所述压电致动器相对应的位置处的墨室的喷墨头基板; 将虚设基板和喷墨头基板彼此接合，使得压电致动器和墨水室彼此对应; 并去除虚设衬底。
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