• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method and apparatus for use in an ink jet printing device to synchronously produce a plurality of uniform fluid filaments and droplets. A fluid reservoir is provided with an orifice plate having a plurality of orifices through which the fluid issues to produce the desired droplets. Above the liquid contained in the reservoir is a rigid piston suspended above the reservoir in contact with the liquid and having means sealingly engaging between the piston and the sides of the reservoir. The piston is moved translationally up and down by a plurality of electro-acoustical transducers which are secured to the piston in contact with its upper surface so as to produce pressure fluctuations in the fluid uniformly and synchronously over the plurality of orifices.
    公开号:SU969179A3
    申请号:SU782639446
    申请日:1978-07-18
    公开日:1982-10-23
    发明作者:Л.Ча Чарльз；Л.Хоу Шоу
    申请人:Дзе Мэд Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    (5) INKJET PRINT HEAD
    one
    This invention relates to printing and can be used in high-speed printing devices;
    A known inkjet printing head, containing a reservoir with a liquid, a nozzle plate and electrical transducers 1,
    The disadvantages of this device include the poor quality of printing and due to the spread of jet parameters emanating from different sopes / 1.
    . Closest to the present invention is an inkjet printhead containing a fluid reservoir formed by a collector and a nozzle plate with a plurality of jet-forming openings, a piston located in the collector, electroacoustic transducers located on the outer side of the piston, and a device for generating acoustic excitation transducers C2}.
    A disadvantage of the known device is poor print quality, due to unsatisfactory synchronization of the formation of droplets generated by a large number of jet-forming holes,
    The purpose of the invention is to improve the quality of printing,
    . The goal is achieved by
    权利要求:
    Claims (2)
    [1]
    10 something. In an inkjet printhead containing a fluid reservoir formed by a collector and a nozzle plate with a multitude of jet-forming openings, a piston located in the collector, electroacoustic transducers located on the outer side of the piston, and a device for generating acoustic excitation transducers in its reservoir a 0-shaped sealing ring is installed, located between the piston and the walls of the collector, and with the piston an elastic plate is bonded, isolated from the liquid minute and at its ends to the head body zakreplenma The length of the working surface of each electroacoustic transducer is less than half the bending wavelength at the maximum frequency of the piston head operation. In addition, transverse vertical slots are made in the piston, spaced one from another at a distance not exceeding half the length of the piston bending wave, and the piston itself consists of the upper part of a rectangular cross section and the lower part of the trapezoidal cross section narrowing in the direction of the nozzle plate. These design features contribute to an increase in synchronization of the drop formation due to the fact that when electroacoustic transducers are excited, the piston does not undergo bending vibrations and performs translational movements that change the volume of the reservoir. Fig. 1 shows a jet printing head V in Fig. 2 — electroacoustic transducer; in FIG 3, the inkjet print head has a cross section / in FIG. k: piston structure; The inkjet print head contains electroacoustic transducers 1, piston 2, first elastic 0-shaped sealing ring 3, upper collector plate, lower collector plate 5, second elastic 0- a figurative sealing ring 6, a nozzle plate 7, a housing of an electro-acoustic converter 8, electro-acoustic elements 9 and 10, an electrode P. is an elastic plate, elastic elements 12 and a bolt 13 In a nozzle plate 7 are streamlined The openings I, and in the piston, are made transverse vertical. The reservoir 16 is formed by a piston of the slit 15 it 2, collector plates k and S and a nozzle plate 7, a device for generating excitation pulses of electroacoustic transducers 17 The head works in the following way. All electroacoustic transducers 1 are constantly excited by electric pulses of constant operating frequency supplied to the electroacoustic elements 9 and 10. These elements put pressure on the electrode 9 and 11, which causes displacement in opposite directions of the cases of electroacoustic transducers 8 and piston 2. Piston 2 moves up and down and affects the paint in tank c. the formation of plane waves parallel to the nozzle plate 7o. As a result of their holes 1, a uniform series of droplets expire. / ViMHa working surface of each electro-acoustic transducer is less than half the length of the piston bending wave at the maximum frequency of the head. The distance between the transverse vertical slots in the piston does not exceed half the length of the piston bending wave. The piston 2 is made of two parts — the upper part of a rectangular cross section and the lower part of a trapezoidal cross section. Making transverse vertical slots in the piston and selecting in this way the distances between these slots and the length of the working surface of the electroacoustic transducers prevents the propagation of lateral bending waves in the piston 2, increasing the uniformity of drop formation. The execution of the lower part of the trapezoidal piston serves to concentrate the energy while focusing waves coming to the holes m 1 in the nozzle plate 7. Performing the jet head of the proposed design will allow significantly uchshit print quality. The invention of the inkjet printing head, containing a fluid reservoir formed by a collector and a nozzle plate with a multitude of jet-forming openings, a piston placed in the collector, electroacoustic transducers located on the outer surface of the piston, and a device for generating acoustic excitation transducers of electroacoustic transducers, so that that, in order to improve print quality, a 0-shaped sealing ring is installed in the reservoir, located between the piston and cteH59691
    Kami collector, and with a piston bonded elastic plate, isolated from the liquid and its ends attached to the body of the head.
    2, the head according to claim 1, characterized in that the length of the working surface of each electroacoustic converter is less than half the length of the piston flexural wave at the maximum frequency of the head. ,
    According to Head 1, the head is 1C and the fact that in the piston is high, there are transverse vertical slits, 5 located one from the other on the section 9.
    stand, not exceeding half the length of the piston bending wave,
    4, Head according to claim 1, characterized in that the piston consists of the upper part of a rectangular
    5 cross-section and bottom of trapezoidal cross-section, tapering in the direction of the nozzle plate
    Sources of information taken into account in the examination
    K US Patent K 1 095232,. cl. G 01 D 15/13, published 1978
    [2]
    2. US patent fP 396032, cl. G 01 D 15/18, published 1976 (prototype).
     IS 19
    FIG.
    类似技术:
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    EP0126649B1|1988-04-13|Fluid jet print head
    同族专利:
    公开号 | 公开日
    SE438283B|1985-04-15|
    DE2830694C2|1982-12-09|
    NL181859B|1987-06-16|
    BR7804585A|1979-03-06|
    FR2397883A1|1979-02-16|
    GB1592819A|1981-07-08|
    JPS5842830B2|1983-09-22|
    FR2397883B1|1984-11-09|
    JPS5421724A|1979-02-19|
    NL7803759A|1979-01-22|
    US4138687A|1979-02-06|
    CH632451A5|1982-10-15|
    IL54455A|1983-07-31|
    SE7807890L|1979-01-19|
    IT7868191D0|1978-05-24|
    DE2830694A1|1979-02-01|
    NL181859C|1987-11-16|
    BE868332A|1978-10-16|
    IT1108651B|1985-12-09|
    CA1120089A|1982-03-16|
    引用文献:
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    GB1350836A|1970-06-29|1974-04-24|Kyser E L|Method and apparatus for recording with writing fluids anddrop projection means therefor|
    FR2233105B2|1970-08-26|1978-05-26|Ici Ltd|
    GB1293980A|1970-11-13|1972-10-25|Standard Telephones Cables Ltd|Ink jet printer pen unit|
    US3900162A|1974-01-10|1975-08-19|Ibm|Method and apparatus for generation of multiple uniform fluid filaments|
    US3960324A|1974-01-10|1976-06-01|International Business Machines Corporation|Method for generation of multiple uniform fluid filaments|
    US4065774A|1975-05-30|1977-12-27|International Business Machines Corporation|Hybrid fluid jet drop generation|
    GB1544493A|1975-09-05|1979-04-19|Ibm|Apparatus for liquid droplet generation|
    US4007465A|1975-11-17|1977-02-08|International Business Machines Corporation|System for self-cleaning ink jet head|
    US4032928A|1976-08-12|1977-06-28|Recognition Equipment Incorporated|Wideband ink jet modulator|ES485764A1|1978-11-15|1980-10-01|Thomae Gmbh Dr K|Method and apparatus for dotting moulding devices by means of discrete droplets of a liquid or suspended lubricant during the manufacture of moulded objects in the pharmaceutical, food or catalytic field.|
    US4245225A|1978-11-08|1981-01-13|International Business Machines Corporation|Ink jet head|
    US4245227A|1978-11-08|1981-01-13|International Business Machines Corporation|Ink jet head having an outer wall of ink cavity of piezoelectric material|
    US4210920A|1979-01-31|1980-07-01|The Mead Corporation|Magnetically activated plane wave stimulator|
    JPS5830830B2|1979-02-23|1983-07-01|Ricoh Kk|
    FR2484288A1|1980-06-13|1981-12-18|Hotchkiss Brandt Sogeme|DEVICE FOR GENERATING DROPLETS APPLICABLE IN PARTICULAR IN AN INKJET PRINTER|
    JPS5727761A|1980-07-29|1982-02-15|Hitachi Ltd|Nozzle for ink jet recording device|
    US4370663A|1980-12-03|1983-01-25|Xerox Corporation|Thin body ink drop generator|
    JPH0431867B2|1982-01-04|1992-05-27|
    US4554558A|1983-05-19|1985-11-19|The Mead Corporation|Fluid jet print head|
    CA1224080A|1983-05-19|1987-07-14|William R. Beaudet|Fluid jet print head and method of making|
    CA1220977A|1983-05-19|1987-04-28|William R. Beaudet|Fluid jet print head and method of making|
    US4587528A|1983-05-19|1986-05-06|The Mead Corporation|Fluid jet print head having resonant cavity|
    US4635080A|1984-03-30|1987-01-06|Canon Kabushiki Kaisha|Liquid injection recording apparatus|
    JPH0822594B2|1984-10-19|1996-03-06|キヤノン株式会社|Inkjet recording head|
    US4901093A|1985-11-26|1990-02-13|Dataproducts Corporation|Method and apparatus for printing with ink jet chambers utilizing a plurality of orifices|
    US4703330A|1986-05-05|1987-10-27|Ricoh Co., Ltd.|Color ink jet drop generator using a solid acoustic cavity|
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    US4999647A|1989-12-28|1991-03-12|Eastman Kodak Company|Synchronous stimulation for long array continuous ink jet printer|
    US5248087A|1992-05-08|1993-09-28|Dressler John L|Liquid droplet generator|
    GB9226474D0|1992-12-18|1993-02-10|Ici Plc|Production of particulate materials|
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    US5724080A|1993-12-20|1998-03-03|Canon Kabushiki Kaisha|Non-sticking pump for use in recovery of ink jet recording apparatus|
    GB9421389D0|1994-10-24|1994-12-07|Domino Printing Sciences Plc|Ink jet printhead|
    GB9421393D0|1994-10-24|1994-12-07|Domino Printing Sciences Plc|Ink jet printer|
    GB9617908D0|1996-08-28|1996-10-09|Videojet Systems Int|A droplet generator for a continuous stream ink jet print head|
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    KR101065265B1|2009-06-01|2011-09-16|한국기계연구원|Integrated apparatus for supplying ink and regulating pressure|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/816,609|US4138687A|1977-07-18|1977-07-18|Apparatus for producing multiple uniform fluid filaments and drops|
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