EP0795407B1 - Dispositif permettant l'émission d'un jet stimulé de matière sous pression par une buse obturable - Google Patents

Dispositif permettant l'émission d'un jet stimulé de matière sous pression par une buse obturable Download PDF

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Publication number
EP0795407B1
EP0795407B1 EP97400545A EP97400545A EP0795407B1 EP 0795407 B1 EP0795407 B1 EP 0795407B1 EP 97400545 A EP97400545 A EP 97400545A EP 97400545 A EP97400545 A EP 97400545A EP 0795407 B1 EP0795407 B1 EP 0795407B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
jet
deformable member
emission
pressure
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
EP97400545A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0795407A1 (fr
Inventor
Thierry Colombat
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.)
Markem Imaje SAS
Original Assignee
Imaje SA
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 Imaje SA filed Critical Imaje SA
Publication of EP0795407A1 publication Critical patent/EP0795407A1/fr
Application granted granted Critical
Publication of EP0795407B1 publication Critical patent/EP0795407B1/fr
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
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

Definitions

  • the present invention relates to a device allowing the emission of a stimulated jet of material under pressure by a closable nozzle.
  • a device can be used in particular to make heads inkjet printer printing.
  • Imprisonment air in the cavity at the time of shutdown is avoided and we remove the air / ink spray phenomenon when starting the jet.
  • this solution has a serious drawback because of the congestion caused by housing on the one hand of the jet stimulation actuator and, on the other hand, of the shutter assembly.
  • the cavity upstream of the nozzle must receive these two functions either so coaxial, i.e. along two distinct converging axes towards the nozzle.
  • said part of the body deformable is pressed onto the nozzle, means sealing being provided between said part and the nozzle.
  • the control means can, according to a other variant, include an actuator acting on the deformable member for closing or releasing the nozzle. This actuator can also serve as means of jet stimulation.
  • the body 2 constitutes the lower part of the barrel 3.
  • a shoulder 5 constitutes the separation between the body 2 and the upper part of the barrel 3.
  • the body 2 is provided with an upper groove 6 near of the shoulder 5 and of a lower groove 7.
  • the lower end 9 of the body 2 is threaded to receive the nut 10.
  • Radial holes 11, 12 drilled respectively in grooves 6 and 7 provide the communication between the axial hole 8 and the grooves 6 and 7.
  • the shaped joint 13 ring, tubular spacer 14 and seal 15 also in the shape of a ring.
  • the average diameters of seals 13 and 15 correspond to the diameter of the spacer 14. This makes the seal 13, the spacer 14 and the seal 15 constitute a stack.
  • the spacer 14 is provided with a groove upper 16 and lower groove 17. Holes 18 and 19 are drilled radially and respectively in grooves 16 and 17. During assembly, grooves 16 and 17 of the spacer 14 are located opposite the grooves 6 and 7, respectively, of body 2.
  • the support 4 is provided with a connector 21 for introducing pressurized ink into the part tubular 4 and a connector 22 for purging of this same tubular part.
  • These fittings 21 and 22 open near the gorges respectively 16 and 17 of the spacer 14.
  • the fixing of the resonator in the barrel is done in the following way.
  • the equipped resonator 25 of seal 20 is pressed into hole 8 until the underside of the seal 20 abuts on a shoulder provided in hole 8.
  • a flange 26 of the resonator then comes into abutment on the face upper part of seal 20.
  • the flange is slid along cable 23 and its threaded lower part 29 is screwed in the upper threaded part of hole 8 up to press the seal 20.
  • the device operates as following.
  • the pressurized ink injected by the connection 21 bathes the outside of the spacer 14 and enters inside through holes 18 to reach the external part of the body 2 of the barrel.
  • Ink passes in the holes 11 of the groove 6, penetrates inside of the barrel by bathing the resonator 25 and goes towards the end 9 of the barrel which is terminated by a washer (not visible in Figure 1) pierced with a axial hole serving as an ink emission nozzle.
  • the purge of the device is done by return of the ink, thanks at the holes 12, in the tubular space between the body 2 and the spacer 14 then, thanks to the holes 19 of the spacer, in the tubular space included between the spacer 14 and the tubular part of the support.
  • the ink is then discharged through the connector 22.
  • the inkjet stimulated by the resonator 25, is therefore done along the axis of the device as well as the arrow drawn under the nut 10 is shown.
  • FIG 2 shows a cannon 103 of modulation device in which is housed a modulator 125, these elements being of the type shown in Figure 1.
  • the modulator 125 is based on a internal shoulder of the barrel 103 thanks to the collar 126 with interposition of a seal 120. It has an end portion 130 of diameter smaller than the rest of the modulator, which leads the presence of a shoulder 131.
  • a collar 132 connects the end portion 130 to the rest of the modulator.
  • cavity 140 constituting part of the axial hole 108 of the barrel and in which ink can flow introduced through hole 111 and capable of being evacuated through hole 112.
  • the ink is subjected to the action of the resonator 125.
  • a plate 141 in the shape of a disc and provided a central hole 142 forming the nozzle.
  • the nozzle 142 is found opposite the lower end 124 of the resonator 125.
  • a deformable member 150 is placed between the resonator 125 and the nozzle 142.
  • the deformable member 150 has a shaped part 151 disc, of diameter corresponding to the diameter of the end part 130 of the resonator, a part annular 152 for connection to the resonator and part intermediate 153 playing the role of bellows and surrounding the end portion 130 of the resonator.
  • the nozzle shutter is of the passive type. It is activated thanks to the different pressures established in the barrel during the stop and start phases.
  • the bellows 153 has a useful stroke which allows bistable operation of the shutter. At a first state, the prestressed bellows rests on the plate 141, which causes the closure of the nozzle.
  • the bellows can be made from a 20 ⁇ m thick stainless steel sheet.
  • This arrangement has the advantage of compactness while limiting the number of parts for perform the function.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Coating Apparatus (AREA)
EP97400545A 1996-03-14 1997-03-12 Dispositif permettant l'émission d'un jet stimulé de matière sous pression par une buse obturable Expired - Lifetime EP0795407B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9603222 1996-03-14
FR9603222A FR2746038B1 (fr) 1996-03-14 1996-03-14 Dispositif permettant l'emission d'un jet simple de matiere sous pression par une buse obturable

Publications (2)

Publication Number Publication Date
EP0795407A1 EP0795407A1 (fr) 1997-09-17
EP0795407B1 true EP0795407B1 (fr) 1999-10-27

Family

ID=9490187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400545A Expired - Lifetime EP0795407B1 (fr) 1996-03-14 1997-03-12 Dispositif permettant l'émission d'un jet stimulé de matière sous pression par une buse obturable

Country Status (9)

Country Link
US (1) US5940100A (es)
EP (1) EP0795407B1 (es)
JP (1) JPH10792A (es)
CN (1) CN1166406A (es)
AU (1) AU722344B2 (es)
CA (1) CA2199692A1 (es)
DE (1) DE69700673T2 (es)
ES (1) ES2140188T3 (es)
FR (1) FR2746038B1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6623101B1 (en) * 2000-10-20 2003-09-23 Silverbrook Research Pty Ltd Moving nozzle ink jet
AU2004233536B2 (en) * 2000-10-20 2005-10-20 Zamtec Limited A printhead having a nozzle arrangement with nozzle openings in moveable wall of the nozzle chamber
CN101823237B (zh) * 2010-04-29 2012-06-06 沈阳理工大学 微磨料气射流加工用螺旋芯控制流束的喷嘴装置
CN104437940A (zh) * 2014-12-24 2015-03-25 深圳市沃尔核材股份有限公司 一种可控式止漏喷头
CN105328995A (zh) * 2015-12-15 2016-02-17 李星 喷头清洗保湿装置
CN109303696B (zh) * 2018-11-23 2021-05-14 秦艳 一种临床麻醉辅助配药装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199767A (en) * 1979-02-21 1980-04-22 International Business Machines Corporation Nozzle valve for ink jet printers
JPS6033676B2 (ja) * 1980-12-19 1985-08-03 松下電器産業株式会社 磁性流体記録装置
DE3302617C2 (de) * 1983-01-27 1987-04-23 Domino Printing Sciences Plc, Cambridge Farbspritzkopf
US4703330A (en) * 1986-05-05 1987-10-27 Ricoh Co., Ltd. Color ink jet drop generator using a solid acoustic cavity
US4723131A (en) * 1986-09-12 1988-02-02 Diagraph Corporation Printhead for ink jet printing apparatus
GB8915819D0 (en) * 1989-07-11 1989-08-31 Domino Printing Sciences Plc Continuous ink jet printer
FR2653063B1 (fr) * 1989-10-16 1995-10-27 Imaje Tete d'impression a jet d'encre et procede de mise en óoeuvre de cette tete destinee notamment a l'impression de caracteres de grandes dimensions.
US5424768A (en) * 1993-06-21 1995-06-13 Xerox Corporation Zero-volume maintenance cap for an ink jet printhead
JPH07314703A (ja) * 1994-05-20 1995-12-05 Dainippon Screen Mfg Co Ltd 連続型インクジェットプリンタ用ヘッド

Also Published As

Publication number Publication date
CA2199692A1 (fr) 1997-09-14
AU1629797A (en) 1997-09-18
AU722344B2 (en) 2000-07-27
EP0795407A1 (fr) 1997-09-17
CN1166406A (zh) 1997-12-03
ES2140188T3 (es) 2000-02-16
DE69700673T2 (de) 2000-06-08
FR2746038A1 (fr) 1997-09-19
FR2746038B1 (fr) 1998-05-07
DE69700673D1 (de) 1999-12-02
JPH10792A (ja) 1998-01-06
US5940100A (en) 1999-08-17

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