EP0210209B1 - Tintenstrahlschreibvorrichtung mit mehreren düsen - Google Patents

Tintenstrahlschreibvorrichtung mit mehreren düsen Download PDF

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Publication number
EP0210209B1
EP0210209B1 EP86900786A EP86900786A EP0210209B1 EP 0210209 B1 EP0210209 B1 EP 0210209B1 EP 86900786 A EP86900786 A EP 86900786A EP 86900786 A EP86900786 A EP 86900786A EP 0210209 B1 EP0210209 B1 EP 0210209B1
Authority
EP
European Patent Office
Prior art keywords
ink
barrel
modules
module
nozzle
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
Application number
EP86900786A
Other languages
English (en)
French (fr)
Other versions
EP0210209A1 (de
Inventor
Jean-Louis Reynaud
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 EP0210209A1 publication Critical patent/EP0210209A1/de
Application granted granted Critical
Publication of EP0210209B1 publication Critical patent/EP0210209B1/de
Expired 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
    • 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
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14362—Assembling elements of heads
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/19—Assembling head units

Definitions

  • the invention relates to a multi-nozzle ink spray writing device. It relates more precisely to a modular assembly constituting a printer with multiple ink jets.
  • the inkjet printing technique consists in carrying out a continuous jet of calibrated drops, supplied by a system of modulations then in electrostatically charging these drops by means of charging electrodes, finally in deflecting each drop by means of a electric field so that if the support on which one wishes to write and the writing device are in relative displacement, one obtains the formation of a printing matrix.
  • the present invention aims to overcome these drawbacks and relates to an architecture implementing several jets of drops, each of the jets being loaded and deflected on demand.
  • a problem arises when we want to make several jets of charged and deflected drops cooperate because each of these jets must be given an exact direction.
  • deformations are encountered during the manufacture of the nozzles which can cause a slight eccentricity of the orifice.
  • the present invention relates to a device which is in the form of writing modules each equipped with a nozzle.
  • One of the important characteristics of the invention resides on the one hand, in the simple and effective means for adjusting the direction of each of the jets at each nozzle, and on the other hand, in the means for relative positioning of the modules between them. All these performances are obtained with such a device, according to the invention, the space of which nevertheless remains extremely limited.
  • the invention relates more precisely to a multi-nozzle ink jet writing device, each of the nozzles belonging to a module comprising a body provided with an ink inlet and a bleed outlet and cooperating with a cylindrical barrel inserted in the body and itself carrying the piezoelectric excitation means of the ink and the sealing means; characterized in that this barrel is equipped at its periphery with grooves intended to receive first and second sets of O-rings respectively positioned upstream and downstream of each of the ink inlet and purge ports of the supply chambers and purge located between the barrel and the body, these O-rings allowing the orientation of the jet at the orifice of the nozzle for ejecting ink drops by rotating the barrel around its longitudinal axis at an angle ( ⁇ ) which can vary from 0 ° to 360 °, each body further comprising an orifice intended to receive an axis around which the corresponding module can pivot along an axis (p).
  • a basic element of a device consists of a modulation body 1 in a modular form and intended to cooperate with other identical modules 1 to allow get different types of printing: more lines, overlapping lines, variable spacing of them, etc.
  • a module 1 has an inlet 2 connected to the ink supply (not shown in the figure) and a purge outlet 3 from the ink circuit.
  • This module 1 comprises a body 4 serving to support the barrel 5 introduced into this body 4 and blocked by a locking means 6 such as a screw for example.
  • a passage 10 is provided for receiving an axis (not shown here, but described by means of the following figures) around which the body 4 can pivot.
  • FIG. 2 illustrates, in exploded view, the barrel 5 intended to receive the piezoelectric means 100 (transducer plus resonator) on the one hand, and the plate 11 nozzle holder 12 on the other hand, as well as the means of tightness ensured by a cable gland 13 and a seal 14; the nozzle holder plate 11 being fitted at the end of the barrel by a sealed fitting.
  • This barrel 5 has an ink inlet orifice 15 and an outlet 16 for purging.
  • the barrel 5 is equipped at its periphery with grooves intended to receive a first and a second set of O-rings (22 and 23), (24 and 25) respectively positioned upstream and downstream of each of the ink inlet orifices 15 and purge 16.
  • This combination of O-rings (22 and 23), (24 and 25) seals the supply and purge chambers, and makes it possible to perfectly adjust the orientation of the ink jet by rotation from the ink supply chamber.
  • This rotation, according to (a), may be complete, that is to say vary from 0 ° to 360 °. This makes it possible in particular to overcome the centering and perpendicularity defects of the jet inherent in the techniques currently used to encase the pierced ruby which generally constitutes the orifice of the nozzle 12. It is thus possible to compensate for these defects and perfectly orient the jet of drops, while keeping the ink supply chamber completely sealed.
  • FIG. 3 An illustration of such an architecture is shown in FIG. 3.
  • three modules 4 are positioned on axes of articulations 31 passing through the orifices 10 described by means of FIG. 1.
  • such an architecture allows a first rotation along (p) thanks to the axes 31, and a second rotation along (a) around the vertical axis X thanks precisely to the presence of the two sets of O-rings (22, 23) and (24, 25) defined above.
  • a simple adjustment according to two degrees of freedom (a) and (p) can be carried out, and this module by module, completely independently.
  • modules 1 are each associated with a load and deflection block 40 of the drops ejected at the nozzle 12.
  • the different load and deflection blocks 40 slide along a plate 410 and are centered by a centering means 41 before being blocked at the chosen distance. They have a slot 42 through which the jet of drops ejected passes through the nozzle 12 which corresponds to it. These drops pass in front of a charge electrode 43 and a charge control electrode 44 before being deflected by the deflection electrodes 45 and 46.
  • Means 50 for securing the modules 1 to the load and deflection block 40 are provided so that the adjustments according to ( ⁇ ) and (p), described above, can be carried out without difficulty after the joining. It is, for example, a stirrup 51 crossed at the level of the orifices 10 by the pins 31 ensuring the adjustment according to ( ⁇ ).
  • One of the branches of this stirrup is secured to the module 1 and the other is made integral, for example, by a set of screws 60, to the load and deflection block 40 concerned. At any time, the orientation of the jet can therefore be adjusted and centered in order to pass perfectly through the slot 42.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Claims (4)

1. Tintenstrahlschreibvorrichtung mit mehreren Düsen, wobei jede der Düsen (12) einem Modul (1) gehört, das einen mit einem Tinteneinlauf (2) und einem Ablauf (3) versehenen Körper (4) umfaßt und mit einem in den Körper (4) eingeführten zylindrischen Rohr (5) zusammenwirkt, das selber die piezoelektrischen Erregungsmittel (100) der Tinte und Dichtungsmittel (13, 14) trägt; dadurch gekennzeichnet, daß dieses Rohr (5) an seinem Umfang mit Rillen versehen ist, dazu bestimmt, einen ersten und einen zweiten Satz O-Ring-Dichtungen (22, 23) und (24, 25) aufzunehmen, die vor bzw. nach jeder Öffnung für den Tinteneinlauf (15) und für den Ablauf (16) der zwischen dem Rohr (5) und dem Körper (4) liegenden Zuführungs- und Ablaufkammern gelegen sind, wobei diese O-Ring-Dichtungen (22, 23) und (24, 25) die Ausrichtung des Strahls bei der Öffnung der Tintentropfenspritzdüse (12) durch Drehen des Rohrs um seine Längsachse gemäß einem von 0° bis 360° variablen Winkel (a) gestattet, wobei jeder Körper (4) außerdem eine Öffnung (10) aufweist, dazu bestimmt, eine Achse (31) aufzunehmen, um die das entsprechende Modul gemäß einer Achse (ß) schwenken kann.
2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß sie eine Vielzahl von Moduln (1) umfaßt, wovon jedes mit einem Aufladungs-und Ablenkungsblock (40) zusammenwirkt, wobei der Abstand der Paare « Moduln (1) plus Block (40) » selber modulierbar ist.
3. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, daß jedes Modul (1) mit dem Aufladungs- und Ablenkungsblock (40) fest verbunden ist, der ihm mit einem Verbindungsmittel (50) beigeordnet ist, das nicht die Bewegung jedes dieser Moduln gemäß den Freiheitsgraden (α) und (ß) beeinträchtigt.
4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß beim Ablaufen das Rohr (5) durch eine mit den besagten O-Ring-Dichtungen (22, 23) und (24, 25) versehene Hohlröhre ersetzt werden kann, wobei dieser Hohlröhre die Düse (12) fehlt.
EP86900786A 1985-01-24 1986-01-20 Tintenstrahlschreibvorrichtung mit mehreren düsen Expired EP0210209B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8501159A FR2576251B1 (fr) 1985-01-24 1985-01-24 Dispositif d'ecriture par projection d'encre multibuse
FR8501159 1985-01-24

Publications (2)

Publication Number Publication Date
EP0210209A1 EP0210209A1 (de) 1987-02-04
EP0210209B1 true EP0210209B1 (de) 1989-12-13

Family

ID=9315680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86900786A Expired EP0210209B1 (de) 1985-01-24 1986-01-20 Tintenstrahlschreibvorrichtung mit mehreren düsen

Country Status (8)

Country Link
US (1) US4714932A (de)
EP (1) EP0210209B1 (de)
JP (1) JPH0611540B2 (de)
AU (1) AU581963B2 (de)
CA (1) CA1247573A (de)
DE (1) DE3667427D1 (de)
FR (1) FR2576251B1 (de)
WO (1) WO1986004298A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094554A (en) * 1990-10-11 1992-03-10 Bryce Office Systems, Inc. Addressing machine
FR2681010B1 (fr) * 1991-09-10 1995-02-17 Imaje Module d'impression multijet et appareil d'impression comportant plusieurs modules.
SG73372A1 (en) * 1993-09-08 2000-06-20 Hitachi Ltd An ink jet printing apparatus and a printing head for such an ink jet printing apparatus
US6070973A (en) * 1997-05-15 2000-06-06 Massachusetts Institute Of Technology Non-resonant and decoupled droplet generator
EP1080929B1 (de) 1999-09-03 2006-10-11 Canon Kabushiki Kaisha Flüssigkeitsdruckkopf, Drucker, und Verfahren zum positionieren des Flüssigkeitsdruckkopfs im Drucker
US7077334B2 (en) * 2003-04-10 2006-07-18 Massachusetts Institute Of Technology Positive pressure drop-on-demand printing
EP2755828B8 (de) 2011-09-15 2018-12-19 R. R. Donnelley & Sons Company Vorrichtung und verfahren zur anbringung einer tintenstrahlkartusche in einen halter
US11872815B2 (en) 2019-04-19 2024-01-16 Markem-Imaje Corporation Purged ink removal from print head
US11186086B2 (en) 2019-04-19 2021-11-30 Markem-Imaje Corporation Systems and techniques to reduce debris buildup around print head nozzles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046117A2 (de) * 1980-08-08 1982-02-17 Bertin & Cie Vorrichtung zur gesteuerten Tröpfchenerzeugung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4338610A (en) * 1972-11-21 1982-07-06 Burroughs Corporation Modular-head endorser
JPS5345237A (en) * 1976-10-04 1978-04-22 Nippon Telegr & Teleph Corp <Ntt> Printing head of ink jet printer
JPS5867460A (ja) * 1981-10-19 1983-04-22 Oki Electric Ind Co Ltd インクジエツトラインプリンタ
US4538763A (en) * 1982-03-26 1985-09-03 Hayden Nilos Conflow Limited Nozzle conveniently assembled and disassembled
FR2542257B1 (fr) * 1983-03-07 1985-08-02 Imaje Sa Tete d'impression a jet d'encre et imprimante qui en est equipee
GB2139962B (en) * 1983-04-11 1986-06-11 Ricoh Kk Ink jet printer carriage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046117A2 (de) * 1980-08-08 1982-02-17 Bertin & Cie Vorrichtung zur gesteuerten Tröpfchenerzeugung

Also Published As

Publication number Publication date
US4714932A (en) 1987-12-22
DE3667427D1 (de) 1990-01-18
EP0210209A1 (de) 1987-02-04
FR2576251B1 (fr) 1988-04-22
AU581963B2 (en) 1989-03-09
JPS62501494A (ja) 1987-06-18
CA1247573A (fr) 1988-12-28
AU5353986A (en) 1986-08-13
WO1986004298A1 (fr) 1986-07-31
JPH0611540B2 (ja) 1994-02-16
FR2576251A1 (fr) 1986-07-25

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