US3900162A - Method and apparatus for generation of multiple uniform fluid filaments - Google Patents

Method and apparatus for generation of multiple uniform fluid filaments Download PDF

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Publication number
US3900162A
US3900162A US432260A US43226074A US3900162A US 3900162 A US3900162 A US 3900162A US 432260 A US432260 A US 432260A US 43226074 A US43226074 A US 43226074A US 3900162 A US3900162 A US 3900162A
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US
United States
Prior art keywords
cavity
bending
streams
parallel
row
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US432260A
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English (en)
Inventor
Donald E Titus
Sherman H M Tsao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to US432260A priority Critical patent/US3900162A/en
Priority to GB416674A priority patent/GB1433861A/en
Priority to AU75309/74A priority patent/AU481443B2/en
Priority to CH1536474A priority patent/CH575835A5/xx
Priority to CA214,237A priority patent/CA1015022A/en
Priority to DE19742455854 priority patent/DE2455854C3/de
Priority to FR7441664A priority patent/FR2257356B1/fr
Priority to IT30505/74A priority patent/IT1027647B/it
Priority to BE151811A priority patent/BE823707A/xx
Priority to NL7416761A priority patent/NL7416761A/xx
Priority to JP14771474A priority patent/JPS5517708B2/ja
Priority to AR257259A priority patent/AR206417A1/es
Priority to SE7500103A priority patent/SE402551B/xx
Priority to DK4175A priority patent/DK146198C/da
Priority to BR155/75A priority patent/BR7500155A/pt
Priority to ES437355A priority patent/ES437355A1/es
Priority to US05/582,065 priority patent/US3960324A/en
Application granted granted Critical
Publication of US3900162A publication Critical patent/US3900162A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/02—Ink jet characterised by the jet generation process generating a continuous ink jet
    • B41J2/025—Ink jet characterised by the jet generation process generating a continuous ink jet by vibration

Definitions

  • This invention relates generally to fluid droplet generation and more particularly to the generation of parallel fluid droplet streams in which the streams change from filaments to droplets at the same distance from the issuing orifices.
  • ink jet recorders having a plurality of parallel recording streams of uniform velocities that are to each pass in charging relationship with a charging electrode
  • the droplets are selectively charged at the point of breakoff from the filament and subsequently deflected along a desired trajectory downstream by electrostatic deflection plates. Deflected droplets may be either recorded or discarded depending on the printing mode.
  • the transition point from filament to droplet changes, then the droplet does not form with the proper charge and hence is not deflected to the desired impact point.
  • the unpredictability of the drop breakoff point is especially troublesome in multi-jet printheads where it is highly desirable that the printing or non-printing of the plurality of jets in a row operate in synchronism.
  • a single ultrasonic transducer is used to produce pressure variations within ink supply chamber or manifold so that the difficulty is not with the synchronization of two or more transducers.
  • a single vibrating transducer is used to stimulate drop formation, however, acoustical waves of generally varying intensity are present at the issuing orifices. Thus, the filament lengths vary directly with the intensity of the stimulating pressure waves.
  • Another important object of this invention is to provide an ink jet recorder in which the lengths of parallel filaments issuing from jet orifices are more nearly uniform so that droplets form at each filament at approximately the same time and same distance from the orifices.
  • a still further object of this invention is to provide an ink jet manifold with a vibrational transducer arranged therein such that in operation uniform stimulating pressure changes are transmitted simultaneously to all issuing orifices.
  • Another object of this invention is to provide an ink jet manifold for issuing plurality of parallel fluid filaments having varicosities induced therein by a vibrating member in the supply chamber which is operated in conjunction with a specially shaped chamber to increase the effective amplitude of the generated acoustic waves.
  • a pressurized ink supply manifold having a linear array of stream-issuing orifices, a flexible elastic bending member which is freely permitted to bend about a single axis.
  • a plurality of piezoelectric transducers are secured in a common orientation to one side of the bending member and all transducers are energized simultaneously from a common potential source to produce simultaneous bending of the member along its length.
  • the member is preferably coextensive with the length of the manifold and parallel to the linear array of orifices through which pressurized ink is forced in parallel streams.
  • the bending member has a spaced pair of slits cut therein to provide a free boundary for the bending member and permit more uniform movement of the bending portion.
  • the bending member separates the manifold cavity into two compartments, each specially formed to concentrate pressure waves created by the bending member at the two converging extremities of the compartments.
  • the invention has the advantage of being capable of producing a bending wave of uniform intensity along its length and along a linear array of nozzles when the bending member is parallel therewith.
  • the fluid issuing from the orifices can be subjected to a series of pressure waves of uniform amplitude so that nearly identical varicosities are induced in each stream at the same time. Because of this, the phase relationship between charging voltages for the several streams and the drop formation is easier to maintain. This results in improved printing quality since better registration of droplet impact is possible.
  • FIG. 1 is an exploded view of a marking head constructed in accordance with the principles of the invention.
  • FIG. 2 is a perspective view of the marking head of FIG. 1 when assembled.
  • FIG. 3 is a sectional elevation view of the marking head taken along the lines 33 in FIG. 2.
  • FIGS. 4a and 4b are rear elevation and plan views, respectively, of the vibrational bending member shown in FIGS. I and 3.
  • FIGS. 5a and 5b are schematic diagrams comparing streams issuing from a conventional marking head and one which incorporates the invention.
  • FIG. 6 is a front elevation view of an alternative embodiment of the bending member shown in FIGS. 40 and 4b.
  • a marking head constructed in accordance with the invention comprises generally a rear cavity block 10, a vibrational bending member 11, a front cavity block 12, an orifice plate 13. an insulative element 14, and a charging plate 35.
  • Block is formed with a rear converging cavity while cavity 16 in block 12 is forwardly converging.
  • a substantially diamondshaped chamber which serves as a manifold for plurality of marking fluid orifices.
  • Cavity 16 extends through block 12 and forms a slot 17 in the front surface 18 of the block.
  • Intermediate blocks 10 and 12 is a vibratory bending member 11 of a thin, flexible, elastic material such as stainless steel having a thickness of approximately 5 mils.
  • the depth of each cavity 15 and 16 is preferably one quarter of the wave length of the operating frequency of bending member 11. This depth produces a standing wave at each cavity extremity.
  • Bending member 11 is shown in greater detail in FIGS. 4a and 4b.
  • the bending member is generally rectangular and of sufficient size to be secured between blocks 10 and 12 and divide the manifold cavity into the front and rear compartments l5 and 16.
  • the member comprises generally a shaded marginal portion 20 which is gripped between the cavity blocks, and a similarly secured tab portion 21 of sufficient length to extend beyond the outside edges of blocks 10 and 12 when assembled together.
  • a central vibratory portion 22 of the bending member is cut free of the member proper by two slits 23 extending through the thickness of the member. This permits the vibratory center portion 22 to be free at its ends.
  • transducer strips 24 On one side of bending member 11 between slits 23 is placed a plurality of transducers, preferably piezoelectric strips of a material such as barium titanate. These strips are cut with a length to width ratio varying from approximately 4:l to 6:1 and have a thickness of approximately 10 mils.
  • the length of the transducer strips 24 is preferably approximately the length of the slits 23 which can in turn vary according to the amount of bending deflection desired within cavity compartments l5 and 16.
  • the piezoelectric material is preferably selected for maximum bending. As is shown in FIG. 3, transducer strips 24 extend beyond the upper and lower limits of compartments l5 and 16 but may be shortened to less than the edges of the compartments proper adjacent bending member 11.
  • the relatively large length to width ratio is desirable for the piezoelectric strips in order to maximize bending of central portion 22 about its longitudinal axis.
  • the piezoelectric material is mounted for expansion in the thickness mode only and when energized will tend to bend in a dish-shaped manner.
  • the narrow width of each transducer finger tends to minimize the effect of the dishing and thus produce single axis bending.
  • Transducer strips 24 are secured to central portion 22 of bending member 11 by an adhesive such as a bonding epoxy.
  • the number and spacing of the transducer fingers 24 will be determined, as mentioned above,by the required deflection of central portion 22 to effect the necessary pressure waves within the issuing fluid.
  • Transducer fingers 24 are mounted with the same orientation, of course, so that all transducers when energized will effect a bending force inunison on central portion 22.
  • the transducers should be evenly spaced and parallel to relief slots 23.
  • the voids between the fingers are filled with a suitable adhesive such as epoxy. Thereafter, each of the fingers is electrically connected via a conductor 25 soldered to the exposed outside surface of each of the fingers and to a terminal block 26.
  • terminal block is secured with a suitable insulative adhesive to bending member 11.
  • an insulated conductor 27 is connected with the wire 25 and secured with an adhesive along tab 21.
  • transducers 24 and wire 25 are coated with an insulative protective material which serves also as a moisture seal.
  • a polyurethane or other suitable material may be used.
  • Bending member 11 with transducer fingers 24 thereon is mounted between cavity blocks 10 and 12 using a pair of gaskets 30 as shown in FIGS. 1 and 3.
  • a recess 31 is preferably provided in one of the cavity blocks such as block 10 to allow tab portion 21 of bending member 11 and conductor 27 to extend below the lower surface of the block for attachment to suitable electrical signal generating source 28, such as a sinewave generator.
  • suitable electrical signal generating source 28 such as a sinewave generator.
  • Orifice plate 13 is secured to the rear surface of insulative element 14 with an adhesive and both are then secured to front surface 18 of cavity block 12 with suitable means such as screws (not shown).
  • a gasket 31 is used to provide a seal.
  • insulative plate element 14 with openings 34 aligned with orifices 33 is secured to orifice plate 13.
  • the insulative element 14 is used to allow subsequent attachment of charging plate 35 containing charge rings 36 with which fluid droplets can be selectively charged as they break off from filaments extending from orifices 33.
  • Orifices may range in size from 0.5 to L5 mils in diameter whileholes 34 are larger, such as 6 to 8 mils. 1
  • the marking head After the marking head has been assembled, it is connected to a suitable pressurized ink supply as indicated by pump 37 and duct 38 which are connected with inlet opening 38 that communicates along a groove with cavities 15 and 16 as shown in FIG. 3. Vents 43 with stoppers 44 permit bleeding off of air during charging. Since the two cavities are interconnected by slits in bending member 22, the manifold is equally pressurized in both compartments providing balanced static pressures. Tab portion 21 of bending member 11 and the conductor 27 extending beyond the bottom of the marking head are connected across the signal source sinewave generator 28, that is capable of applying an actuating signal, for example, from to Khz, to piezoelectric transducer fingers 24.
  • actuating signal for example, from to Khz
  • the pulses applied to piezoelectric transducers 24 cause central portion 22 of the bending element to deflect to a position such as shown by dotted line 40 in FIG. 3.
  • the signal generator may operate between ground and some voltage or be connected so as to operate as voltage swings about the ground level. If the latter condition is used then, of .course. bending member deflection will be between the pair of dotted. lines 40 and 41.
  • central portion 22 to repetitively flex sets up pressure waves within converging compartments l5 and 16 causing the ink at each of the orifices to experience a change in pressure simultaneously along the orifice array. This causes the occurrence of varicosities in the fluid filament issuing from each orifice which results in the formation of droplets in each stream at the same distance from orifice plate 13.
  • FIGS. 5a and b there'is illustrated for comparative purposes a schematic representation of droplets formed by prior art, vibratory devices and those formed with structure assembled in accordance with the invention.
  • fluid streams 50 issuing from the orifice plate, FIG. 5a as in the prior art tend to break up at a varying distance from the orifice plate within the charge plate.
  • the breakup for the filaments into droplets occurs usually in a pattern which is reflective of the variations in wave intensity at the orifice plate and along the orifice array direction.
  • each fluid filament 51 has induced therein at the same time and with the same magnitude a pressure variation which results in similar varicosities occurring along each filament as it issues from the orifice.
  • This has the advantage of resulting in droplet breakoff at the same point and time within the charge plate.
  • FIG. 6 there is shown a modification of bending element 11 in which stiffening bars 45 are added transversely of transducer fingers 24 and on the opposite side of central flexing portion 22.
  • the stiffening bars are optional and used only if portion 22 tends to bend transversely of the desired bending.
  • Bars 45 may be adhesively secured to element 11.
  • the bars may be replaced with a corrugated shim stock to accomplish the same result.
  • the preferred material is stainless steel in either case so as to prevent corrosion. Other metals, however, may be used if desired.
  • bending element 11 has been shown secured on all edges about the flexing portion 22, it can be secured only along opposite edges or along a single edge, preferably an edge parallel to the bending axis.
  • Apparatus for producing a plurality of parallel streams of fluid droplets comprising:
  • said generating means including a flexible member and a plurality of independently movable elements cooperably bending said member to produce a said pressure disturbance when moved;
  • planar member is fixed along its periphery in said cavity forming means with a major surface thereof parallel to said nozzle row, and said elements are piezoelectric strips commonly secured to the opposite major surface of said member in a row extending parallel with said nozzle row.
  • planar member includes at least one stiffening component secured thereto on the surface opposite said elements and is oriented in a direction transverse to the longitudinal axis of said elements.
  • Apparatus for producing a plurality of parallel streams of fluid droplets comprising:
  • nozzle means along a wall of said cavity means having a row of orifices therein for issuing parallel streams of fluid;
  • said generating means including a flexible member bendable about an axis parallel with the longitudinal axis of said orifice row;
  • bending means energizable to bend said member about said axis.
  • Apparatus according to claim 11 wherein said flexible member is secured along its periphery and has a pair of slits therein normal to said bending axis.
  • Apparatus according to claim 11 further including means for energizing said bending means to create a pressure disturbance along said row.

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  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Facsimile Heads (AREA)
US432260A 1974-01-10 1974-01-10 Method and apparatus for generation of multiple uniform fluid filaments Expired - Lifetime US3900162A (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
US432260A US3900162A (en) 1974-01-10 1974-01-10 Method and apparatus for generation of multiple uniform fluid filaments
GB416674A GB1433861A (en) 1974-01-10 1974-11-06 Method and apparatus for generating fluid droplets
AU75309/74A AU481443B2 (en) 1974-01-10 1974-11-13 Method and apparatus for generating liquid droplets
CH1536474A CH575835A5 (de) 1974-01-10 1974-11-19
CA214,237A CA1015022A (en) 1974-01-10 1974-11-20 Method and apparatus for generation of multiple uniform fluid filaments
DE19742455854 DE2455854C3 (de) 1974-01-10 1974-11-26 Vorrichtung zum Erzeugen von aufeinanderfolgenden Flüssigkeitstropfen in parallelen Strahlen, insbesondere für Tintenstrahldrucker
FR7441664A FR2257356B1 (de) 1974-01-10 1974-12-05
IT30505/74A IT1027647B (it) 1974-01-10 1974-12-13 Stampatrice a getto d inchiostro perfezionale
BE151811A BE823707A (fr) 1974-01-10 1974-12-20 Procede et dispositif pour engendrer des jets de fluide notamment pour imprimante a jets d'encre
NL7416761A NL7416761A (nl) 1974-01-10 1974-12-23 Drukkop voor een vloeistofstraalinrichting.
JP14771474A JPS5517708B2 (de) 1974-01-10 1974-12-24
AR257259A AR206417A1 (es) 1974-01-10 1975-01-01 Un aparato para generar goticulas de fluido
SE7500103A SE402551B (sv) 1974-01-10 1975-01-07 Anordning for alstring av vetskedroppar
DK4175A DK146198C (da) 1974-01-10 1975-01-09 Apparat til frembringelse af parallelle stroemme af smaa vaeskedraaber, navnlig til brug i blaekstraaleskrivere
BR155/75A BR7500155A (pt) 1974-01-10 1975-01-09 Processo e aparelho para gerar uma pluralidade de correntes paralelas de goticulas de fluido
ES437355A ES437355A1 (es) 1974-01-10 1975-04-30 Un aparato para generar sucesivas gotitas de fluido en fi- lamentos paralelos, particularmente para impresores de cho- rro de tinta.
US05/582,065 US3960324A (en) 1974-01-10 1975-05-29 Method for generation of multiple uniform fluid filaments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US432260A US3900162A (en) 1974-01-10 1974-01-10 Method and apparatus for generation of multiple uniform fluid filaments

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/582,065 Division US3960324A (en) 1974-01-10 1975-05-29 Method for generation of multiple uniform fluid filaments

Publications (1)

Publication Number Publication Date
US3900162A true US3900162A (en) 1975-08-19

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US432260A Expired - Lifetime US3900162A (en) 1974-01-10 1974-01-10 Method and apparatus for generation of multiple uniform fluid filaments

Country Status (14)

Country Link
US (1) US3900162A (de)
JP (1) JPS5517708B2 (de)
AR (1) AR206417A1 (de)
BE (1) BE823707A (de)
BR (1) BR7500155A (de)
CA (1) CA1015022A (de)
CH (1) CH575835A5 (de)
DK (1) DK146198C (de)
ES (1) ES437355A1 (de)
FR (1) FR2257356B1 (de)
GB (1) GB1433861A (de)
IT (1) IT1027647B (de)
NL (1) NL7416761A (de)
SE (1) SE402551B (de)

Cited By (35)

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Publication number Priority date Publication date Assignee Title
US4005435A (en) * 1975-05-15 1977-01-25 Burroughs Corporation Liquid jet droplet generator
US4007465A (en) * 1975-11-17 1977-02-08 International Business Machines Corporation System for self-cleaning ink jet head
US4015272A (en) * 1974-08-14 1977-03-29 Matsushita Electric Industrial Co., Ltd. Ink ejection type writing unit
US4032928A (en) * 1976-08-12 1977-06-28 Recognition Equipment Incorporated Wideband ink jet modulator
FR2338089A1 (fr) * 1976-01-15 1977-08-12 Xerox Corp Dispositif de projection de gouttelettes de liquide comportant des elements de commande demontables
US4065774A (en) * 1975-05-30 1977-12-27 International Business Machines Corporation Hybrid fluid jet drop generation
US4095232A (en) * 1977-07-18 1978-06-13 The Mead Corporation Apparatus for producing multiple uniform fluid filaments and drops
US4188635A (en) * 1977-10-03 1980-02-12 International Business Machines Corporation Ink jet printing head
US4245225A (en) * 1978-11-08 1981-01-13 International Business Machines Corporation Ink jet head
US4282532A (en) * 1979-06-04 1981-08-04 Xerox Corporation Ink jet method and apparatus using a thin film piezoelectric excitor for drop generation
US4290074A (en) * 1978-12-29 1981-09-15 Compagnie Internationale Pour L'informatique Cii-Honeywell Bull (Societe Anonyme) Ink drop generator for ink jet printer
US4296417A (en) * 1979-06-04 1981-10-20 Xerox Corporation Ink jet method and apparatus using a thin film piezoelectric excitor for drop generation with spherical and cylindrical fluid chambers
US4303927A (en) * 1977-03-23 1981-12-01 International Business Machines Corporation Apparatus for exciting an array of ink jet nozzles and method of forming
US4326553A (en) * 1980-08-28 1982-04-27 Rca Corporation Megasonic jet cleaner apparatus
US4370662A (en) * 1980-12-02 1983-01-25 Ricoh Company, Ltd. Ink jet array ultrasonic simulation
US4383264A (en) * 1980-06-18 1983-05-10 Exxon Research And Engineering Co. Demand drop forming device with interacting transducer and orifice combination
US4465234A (en) * 1980-10-06 1984-08-14 Matsushita Electric Industrial Co., Ltd. Liquid atomizer including vibrator
US4530464A (en) * 1982-07-14 1985-07-23 Matsushita Electric Industrial Co., Ltd. Ultrasonic liquid ejecting unit and method for making same
US4596990A (en) * 1982-01-27 1986-06-24 Tmc Company Multi-jet single head ink jet printer
US4646106A (en) * 1982-01-04 1987-02-24 Exxon Printing Systems, Inc. Method of operating an ink jet
US4667877A (en) * 1985-08-15 1987-05-26 Carnegie-Mellon University Multi-orifice impulsed spray generator
US4702418A (en) * 1985-09-09 1987-10-27 Piezo Electric Products, Inc. Aerosol dispenser
US6039059A (en) * 1996-09-30 2000-03-21 Verteq, Inc. Wafer cleaning system
US6050679A (en) * 1992-08-27 2000-04-18 Hitachi Koki Imaging Solutions, Inc. Ink jet printer transducer array with stacked or single flat plate element
US6116517A (en) * 1996-07-01 2000-09-12 Joachim Heinzl Droplet mist generator
US6132035A (en) * 1990-07-10 2000-10-17 Fujitsu Limited Printing head having resiliently supported vibration plate
US6135357A (en) * 1998-11-23 2000-10-24 General Electric Company Apparatus for atomizing high-viscosity fluids
US20040037764A1 (en) * 2002-08-22 2004-02-26 Tien-Ho Gau Controlled odor generator
US20040140097A1 (en) * 2002-02-19 2004-07-22 Halliburton Energy Services, Inc. Pressure reading tool
US20050001050A1 (en) * 2003-05-15 2005-01-06 Fumio Takagi Liquid dispense head and manufacturing method thereof
US20080217430A1 (en) * 2007-02-01 2008-09-11 Microflow Engineering Sa Volatile liquid droplet dispenser device
US20090314853A1 (en) * 2008-06-03 2009-12-24 Ep Systems Sa Microflow Division Volatile liquid droplet dispenser device
US20110005604A1 (en) * 2008-02-27 2011-01-13 Fluid Automation Systems S.A. Electrically actuated valve with a ball sealing element
US20110036921A1 (en) * 2005-11-30 2011-02-17 Microflow Enguineering Sa Volatile liquid droplet dispenser device
US20170100932A1 (en) * 2000-01-07 2017-04-13 Xaar Technology Limited Droplet deposition apparatus

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US4138687A (en) * 1977-07-18 1979-02-06 The Mead Corporation Apparatus for producing multiple uniform fluid filaments and drops
US4107699A (en) * 1977-08-15 1978-08-15 The Mead Corporation Trenched stimulating plate
IL54957A (en) * 1977-08-29 1981-03-31 Mead Corp Ink jet printer having liquid communicated traveling wave stimulation
FR2409654B1 (fr) * 1977-11-17 1985-10-04 Thomson Csf Dispositif transducteur piezoelectrique et son procede de fabrication
JPS54104345A (en) * 1978-02-03 1979-08-16 Oki Electric Ind Co Ltd Impulse system ink jet head
JPS54130026A (en) * 1978-02-24 1979-10-09 Oki Electric Ind Co Ltd Impulse system ink jet head
JPS5840508B2 (ja) * 1978-03-15 1983-09-06 沖電気工業株式会社 インパルス方式マルチノズルインクジエツトヘツド
JPS5571570A (en) * 1978-11-22 1980-05-29 Fuji Xerox Co Ltd Multinozzle ink jet head
EP0020182A1 (de) * 1979-06-04 1980-12-10 Xerox Corporation Vorrichtung zum Erzeugen von Flüssigkeitstropfen und Verfahren
JPS5621863A (en) * 1979-07-31 1981-02-28 Ricoh Co Ltd Multinozzle head for ink jet
JPS576551U (de) * 1980-06-12 1982-01-13
FR2484288A1 (fr) * 1980-06-13 1981-12-18 Hotchkiss Brandt Sogeme Dispositif de generation de gouttelettes applicable notamment dans une imprimante a jet d'encre
IT1144625B (it) * 1981-08-04 1986-10-29 Olivetti & Co Spa Stampante a punti a getto d inchiostro
JPS61159679U (de) * 1985-03-25 1986-10-03
US4746929A (en) * 1987-01-16 1988-05-24 Xerox Corporation Traveling wave droplet generator for an ink jet printer
US5764257A (en) * 1991-12-26 1998-06-09 Seiko Epson Corporation Ink jet recording head
DE69233523T2 (de) * 1991-12-26 2006-03-16 Seiko Epson Corp. Tintenstrahldruckkopf

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US3700169A (en) * 1970-10-20 1972-10-24 Environment One Corp Process and appratus for the production of hydroelectric pulsed liquids jets
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US3211088A (en) * 1962-05-04 1965-10-12 Sperry Rand Corp Exponential horn printer
US3373437A (en) * 1964-03-25 1968-03-12 Richard G. Sweet Fluid droplet recorder with a plurality of jets
US3679132A (en) * 1970-01-21 1972-07-25 Cotton Inc Jet stream vibratory atomizing device
US3700169A (en) * 1970-10-20 1972-10-24 Environment One Corp Process and appratus for the production of hydroelectric pulsed liquids jets
US3747120A (en) * 1971-01-11 1973-07-17 N Stemme Arrangement of writing mechanisms for writing on paper with a coloredliquid

Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015272A (en) * 1974-08-14 1977-03-29 Matsushita Electric Industrial Co., Ltd. Ink ejection type writing unit
US4005435A (en) * 1975-05-15 1977-01-25 Burroughs Corporation Liquid jet droplet generator
US4065774A (en) * 1975-05-30 1977-12-27 International Business Machines Corporation Hybrid fluid jet drop generation
US4007465A (en) * 1975-11-17 1977-02-08 International Business Machines Corporation System for self-cleaning ink jet head
FR2338089A1 (fr) * 1976-01-15 1977-08-12 Xerox Corp Dispositif de projection de gouttelettes de liquide comportant des elements de commande demontables
US4032928A (en) * 1976-08-12 1977-06-28 Recognition Equipment Incorporated Wideband ink jet modulator
US4303927A (en) * 1977-03-23 1981-12-01 International Business Machines Corporation Apparatus for exciting an array of ink jet nozzles and method of forming
US4095232A (en) * 1977-07-18 1978-06-13 The Mead Corporation Apparatus for producing multiple uniform fluid filaments and drops
FR2397886A1 (fr) * 1977-07-18 1979-02-16 Mead Corp Appareil de formation de courants de gouttelettes de fluide
US4188635A (en) * 1977-10-03 1980-02-12 International Business Machines Corporation Ink jet printing head
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CA1015022A (en) 1977-08-02
AU7530974A (en) 1976-05-13
GB1433861A (en) 1976-04-28
DK4175A (de) 1975-08-25
SE402551B (sv) 1978-07-10
IT1027647B (it) 1978-12-20
NL7416761A (nl) 1975-07-14
ES437355A1 (es) 1976-12-16
BE823707A (fr) 1975-04-16
CH575835A5 (de) 1976-05-31
SE7500103L (de) 1975-07-11
DE2455854A1 (de) 1975-07-17
BR7500155A (pt) 1975-11-04
AR206417A1 (es) 1976-07-23
FR2257356B1 (de) 1976-12-31
FR2257356A1 (de) 1975-08-08
DE2455854B2 (de) 1976-07-22
DK146198C (da) 1984-01-16
JPS50103936A (de) 1975-08-16
JPS5517708B2 (de) 1980-05-13
DK146198B (da) 1983-07-25

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