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EP0131704B1 - Liquid droplets recording device - Google Patents

Liquid droplets recording device Download PDF

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Publication number
EP0131704B1
EP0131704B1 EP84105201A EP84105201A EP0131704B1 EP 0131704 B1 EP0131704 B1 EP 0131704B1 EP 84105201 A EP84105201 A EP 84105201A EP 84105201 A EP84105201 A EP 84105201A EP 0131704 B1 EP0131704 B1 EP 0131704B1
Authority
EP
European Patent Office
Prior art keywords
transducers
transducer
carrier plate
recording device
liquid droplets
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
EP84105201A
Other languages
German (de)
French (fr)
Other versions
EP0131704A1 (en
Inventor
Nilsson Dipl.-Ing. Kenth
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0131704A1 publication Critical patent/EP0131704A1/en
Application granted granted Critical
Publication of EP0131704B1 publication Critical patent/EP0131704B1/en
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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/14282—Structure of print heads with piezoelectric elements of cantilever type
    • 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
    • B41J2002/14379—Edge shooter

Definitions

  • the invention relates to a writing instrument working with droplets of liquid according to the preamble of claim 1.
  • Such a writing instrument is known from DE-C-2 527 647.
  • the writing instrument has a carrier mounted between the recording medium and transducer parallel to the latter, and has a number of nozzles arranged in a row next to one another. Each nozzle lies in the area of the greatest vibration amplitude and in the direction of the deflection of the transducers.
  • several of these converters must be arranged one behind the other in the paper transport direction. Because of the length of the transducers, the locations for the different color droplets are considerably distant from one another, so that an incorrect shift between the individual color dots can easily occur due to incorrect paper transport. If two or more converters are used to increase the resolution, this can lead to image deterioration.
  • the transducers are perpendicular to the recording medium, the nozzles being arranged in the direct axis extension of the transducers.
  • the transducers in particular in the case of small dimensions, not only lengthen in a straight line when electrical voltage changes occur at their contacts, but also bend. This can cause malfunctions when ejecting liquid droplets from the nozzles.
  • EP-A-0 067 889 describes a liquid recorder with a channel matrix designed as a write head.
  • the write head has a complicated construction with channels that zigzag from the liquid storage chamber to the outlet openings. This is necessary so that strips of piezo elements, which run on the outer walls of the write head and transverse to the longitudinal direction of the channels, can act on at least part of the respective channel. Due to the zigzag formation of the channels, air bubbles can get stuck at the corners and it can be difficult to vent the channel system. This leads to an uneven droplet frequency and droplet quality. In addition, due to the structure of the write head, only a limited number of channels can be installed one after the other.
  • the invention has for its object to provide a writing instrument of the type mentioned, which is relatively simple in construction and in which a tight attachment of any number of transducers is possible in a row.
  • the carrier plate have grooves which run below and parallel to the respective transducer. This improves the shape and orientation of the ejected liquid droplets.
  • each transducer facing the carrier plate has a groove running in its longitudinal direction. Compared to the grooves in the carrier plate, there is the advantage that the converter and carrier plate no longer have to be aligned with one another so precisely. 4th
  • a nozzle plate is attached between the transducer with plate and recording medium, each nozzle being arranged in the axis extension of the intermediate space between the corresponding transducer and the carrier plate.
  • the grooves can be omitted. Due to the construction of the transducer according to the invention, liquid can now be expelled through the nozzles. At the same time it is achieved that all liquid droplets have the same, defined size.
  • the transducers be arranged on both sides of the carrier. The result of this is that the transducers can be attached extremely close to one another.
  • the connecting line 8 is guided, which is provided at its free end with a plug 9 for connection to a control device, not shown, which supplies the control signals for recording the desired courses, characters or images.
  • FIG. 1 shows how rod-shaped piezoelectric transducers 10 are arranged perpendicular to the recording medium 3 in the housing 7.
  • the comb comb common to all transducers 11 is fastened with a fastening arrangement 12 to a carrier plate 13 fixedly arranged in the housing 7.
  • 1 shows that the transducers are bilaminar and are formed from a piezoceramic layer 14 and a metal layer 15.
  • Writing liquid is provided between the carrier plate 13 and the transducers 10. When electrical voltage is applied to a contact, not shown, of a transducer 10, this moves into the position shown in dashed lines.
  • transducer 10 When a transducer 10 is short-circuited, it snaps back into the non-bent position drawn with solid lines and in doing so presses a droplet of writing fluid forward onto the recording medium 3 in the direction of the transducer axis.
  • This embodiment of transducer 10 with carrier plate 13 is preferably used when larger liquid droplets are desired.
  • the carrier plate 13 has grooves 16 which run below and parallel to the respective transducer 10.
  • the grooves 16 are clearly visible in FIG. 3.
  • the transducers can be attached closely to a carrier plate provided with grooves 16, so that a unit which is compact in construction is obtained.
  • the grooves enable a very good resolution and an equally good alignment of the individual ink outputs.
  • FIG. 5 shows in a further exemplary embodiment that a nozzle plate 17 is attached between transducer 10 with carrier plate 13 and recording medium 3, each nozzle 18 being arranged in the axis extension of the intermediate space between transducer 10 and carrier plate 13.
  • the grooves 16 can be omitted.
  • a predetermined exact shaping and alignment of the liquid droplets can be obtained through the nozzles 18.
  • FIG. 6 shows the construction of a plurality of transducers 10 with carrier plates 13 in close succession in the pen housing 7.
  • the relatively small distance between the transducers is particularly important when writing characters or images with different colors, since the characters or images can be preserved very clearly.
  • transducers 10 are arranged on both sides of the carrier plate 13.
  • the transducers 10 can hereby be attached extremely close together.
  • the nozzle plate 17 is not absolutely necessary. Instead, the carrier plates can be provided with grooves 16 (FIGS. 1 to 4). It is also possible to dispense with both nozzle plate 17 and grooves 16.

Landscapes

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

Description

Die Erfindung betrifft ein mit Flüssigkeitströpfchen arbeitendes Schreibgerät gemäss dem Oberbegriff des Anspruches 1.The invention relates to a writing instrument working with droplets of liquid according to the preamble of claim 1.

Ein solches Schreibgerät ist durch die DE-C-2 527 647 bekannt. Das Schreibgerät besitzt einen zwischen Aufzeichnungsträger und Wandler parallel zu diesen angebrachten Träger, der eine Anzahl in einer Reihe nebeneinander angeordnete Düsen aufweist. Jede Düse liegt im Bereich der grössten Schwingungsamplitude und in Richtung der Auslenkung der Wandler. Beim Aufzeichnen mehrfarbiger Zeichen oder Bilder müssen mehrere dieser Wandler in Papiertransportrichtung hintereinander angeordnet werden. Wegen der Länge der Wandler sind die Orte für die verschiedenen Farbtröpfchen beträchtlich voneinander entfernt, so dass durch inkorrekten Papiertransport leicht eine unerwünschte Verschiebung zwischen den einzelnen Farbpunkten auftreten kann. Auch bei der Verwendung von zwei oder mehreren Wandlern zur Erhöhung der Auflösung kann es dadurch zu Bildverschlechterungen kommen.Such a writing instrument is known from DE-C-2 527 647. The writing instrument has a carrier mounted between the recording medium and transducer parallel to the latter, and has a number of nozzles arranged in a row next to one another. Each nozzle lies in the area of the greatest vibration amplitude and in the direction of the deflection of the transducers. When recording multicolored characters or images, several of these converters must be arranged one behind the other in the paper transport direction. Because of the length of the transducers, the locations for the different color droplets are considerably distant from one another, so that an incorrect shift between the individual color dots can easily occur due to incorrect paper transport. If two or more converters are used to increase the resolution, this can lead to image deterioration.

Es ist ferner durch ein weiteres in der DE-C-2 527 647 gezeigtes Ausführungsbeispiel bekannt, dass die Wandler senkrecht zum Aufzeichnungsträger liegen, wobei die Düsen in direkter Achsenverlängerung der Wandler angeordnet sind. Es hat sich aber gezeigt, dass die Wandler, insbesondere bei kleinen Dimensionen, bei elektrischen Spannungsänderungen an deren Kontaktierungen sich nicht nur gradlinig verlängern, sondern auch verbiegen. Dadurch können beim Herausstossen von Flüssigkeitströpfchen aus den Düsen Störungen auftreten.It is also known from a further exemplary embodiment shown in DE-C-2 527 647 that the transducers are perpendicular to the recording medium, the nozzles being arranged in the direct axis extension of the transducers. However, it has been shown that the transducers, in particular in the case of small dimensions, not only lengthen in a straight line when electrical voltage changes occur at their contacts, but also bend. This can cause malfunctions when ejecting liquid droplets from the nozzles.

In der EP-A-0 067 889 ist ein Flüssigkeitsschreiber mit einer als Schreibkopf ausgebildeten Kanalmatrize beschrieben. Der Schreibkopf weist einen komplizierten konstruktiven Aufbau auf mit Kanälen, die von der Flüssigkeitsaufbewahrungskammer zu den Austrittsöffnungen im Zickzack verlaufen. Dies ist erforderlich, damit Streifen von Piezoelementen, die auf die Aussenwände des Schreibkopfes und quer zur Längsrichtung der Kanäle verlaufen, auf wenigstens ein Teil des jeweiligen Kanales einwirken können. Durch die Zickzackausbildung der Kanäle können an den Ecken Luftblasen hängenbleiben und es kann schwer sein, das Kanalsystem zu entlüften. Dies führt zu einer ungleichmässigen Tröpfchenfrequenz und Tröpfchenqualität. Ausserdem kann durch den Aufbau des Schreibkopfes nur eine begrenzte Anzahl Kanäle hintereinander angebracht werden.EP-A-0 067 889 describes a liquid recorder with a channel matrix designed as a write head. The write head has a complicated construction with channels that zigzag from the liquid storage chamber to the outlet openings. This is necessary so that strips of piezo elements, which run on the outer walls of the write head and transverse to the longitudinal direction of the channels, can act on at least part of the respective channel. Due to the zigzag formation of the channels, air bubbles can get stuck at the corners and it can be difficult to vent the channel system. This leads to an uneven droplet frequency and droplet quality. In addition, due to the structure of the write head, only a limited number of channels can be installed one after the other.

Der Erfindung liegt die Aufgabe zugrunde, ein Schreibgerät der eingangs genannten Art zu schaffen, das in seinem Aufbau verhältnismässig einfach ist und bei dem eine dichte Anbringung einer beliebigen Anzahl von Wandlern hintereinander möglich ist.The invention has for its object to provide a writing instrument of the type mentioned, which is relatively simple in construction and in which a tight attachment of any number of transducers is possible in a row.

Diese Aufgabe ist erfindungsgemäss durch die Merkmale des Anspruches 1 gelöst. Diese Wandler können ohne zusätzliche Düsen auskommen, was den Schreiber wesentlich vereinfacht. Dies führt unter Umständen zu grösseren Flüssigkeitströpfchen, was beim Schreiben von Zeichen manchmal von Vorteil sein kann.According to the invention, this object is achieved by the features of claim 1. These converters can do without additional nozzles, which considerably simplifies the recorder. This may result in larger liquid droplets, which can sometimes be useful when writing characters.

In einer vorteilhaften Ausbildung der Erfindung wird vorgeschlagen, dass die Trägerplatte Nuten aufweist, die unterhalb und parallel zum jeweiligen Wandler verlaufen. Dadurch wird die Formung und Ausrichtung der ausgestossenen Flüssigkeitströpfchen verbessert.In an advantageous embodiment of the invention, it is proposed that the carrier plate have grooves which run below and parallel to the respective transducer. This improves the shape and orientation of the ejected liquid droplets.

Ebenso ist es möglich, dass die der Trägerplatte zugewandte Seite jedes Wandlers eine in dessen Längsrichtung verlaufenden Nut aufweist. Gegenüber den Nuten in der Trägerplatte ergibt sich der Vorteil, dass Wandler und Trägerplatte dabei nicht mehr so exakt aufeinander ausgerichtet werden müssen. 4 It is also possible that the side of each transducer facing the carrier plate has a groove running in its longitudinal direction. Compared to the grooves in the carrier plate, there is the advantage that the converter and carrier plate no longer have to be aligned with one another so precisely. 4th

In einer weiteren Ausführungsform der Erfindung wird vorgeschlagen, dass zwischen Wandler mit Platte und Aufzeichnungsträger eine Düsenplatte angebracht ist, wobei jede Düse in der Achsenverlängerung des Zwischenraumes zwischen dem entsprechenden Wandler und der Trägerplatte angeordnet ist. In dieser Ausführungsform können die Nuten weggelassen werden. Durch den erfindungsgemässen Aufbau des Wandlers kann nunmehr Flüssigkeit durch die Düsen herausgestossen werden. Gleichzeitig wird dadurch erreicht, dass alle Flüssigkeitströpfchen eine gleiche, definierte Grösse haben.In a further embodiment of the invention it is proposed that a nozzle plate is attached between the transducer with plate and recording medium, each nozzle being arranged in the axis extension of the intermediate space between the corresponding transducer and the carrier plate. In this embodiment, the grooves can be omitted. Due to the construction of the transducer according to the invention, liquid can now be expelled through the nozzles. At the same time it is achieved that all liquid droplets have the same, defined size.

In einer Weiterbildung der Erfindung wird vorgeschlagen, dass die Wandler auf beiden Seiten des Trägers angeordnet sind. Dadurch ist erreicht, dass die Anbringung der Wandler extrem dicht hintereinander erfolgen kann.In a development of the invention, it is proposed that the transducers be arranged on both sides of the carrier. The result of this is that the transducers can be attached extremely close to one another.

Die Erfindung ist nachfolgend anhand einer Anzahl von Ausführungsbeispielen in Verbindung mit der Zeichnung näher erläutert. Es zeigen:

  • Fig. 1 eine schematische Seitenansicht der wesentlichen Teile eines Schreibgerätes nach der Erfindung,
  • Fig. 2 eine Draufsicht auf eine kammartige Piezoplatte nach Fig. 1,
  • Fig. 3 eine schematische Vorderansicht einer Piezoplatte nach den Fig. 1 und 2,
  • Fig. 4 bis 7 weitere Ausführungsbeispiele der wesentlichen Teile des Schreibgerätes und
  • Fig. 8 eine schematische Gesamtansicht eines Schreibgerätes nach der Erfindung.
The invention is explained in more detail below on the basis of a number of exemplary embodiments in conjunction with the drawing. Show it:
  • 1 is a schematic side view of the essential parts of a writing instrument according to the invention,
  • 2 is a plan view of a comb-like piezo plate according to FIG. 1,
  • 3 shows a schematic front view of a piezo plate according to FIGS. 1 and 2,
  • Fig. 4 to 7 further embodiments of the essential parts of the writing instrument and
  • Fig. 8 is an overall schematic view of a writing instrument according to the invention.

Aus Fig. 8 ist der äussere Prinzipaufbau eines Schreibgerätes ersichtlich. Über die Transportrollen 1 und 2 wird ein Aufzeichnungsträger 3, z.B. normales Registrierpapier, in Richtung des Pfeiles 4 über einen Abstandshalter 5 an dem Gehäuse 7 vorbeigezogen. In das Gehäuse 7 ist die Anschlussleitung 8 geführt, die an ihrem freien Ende mit einem Stecker 9 zum Anschluss an ein nicht dargestelltes Steuergerät versehen ist, das die Steuersignale für die Aufzeichnung der gewünschten Verläufe, Zeichen oder Bilder liefert.8 shows the outer basic structure of a writing instrument. A recording medium 3, e.g. normal registration paper, drawn in the direction of arrow 4 over a spacer 5 past the housing 7. In the housing 7, the connecting line 8 is guided, which is provided at its free end with a plug 9 for connection to a control device, not shown, which supplies the control signals for recording the desired courses, characters or images.

In Fig. 1 ist dargestellt, wie im Gehäuse 7 stabförmige piezoelektrische Wandler 10 senkrecht zum Aufzeichnungsträger 3 angeordnet sind. Die Wandler 10, die als Zähne eines Kammes ausgebildet sind (Fig. 2), arbeiten als Biegeschwinger. Der allen Wandlern 10 gemeinsame Kammrücken 11 ist mit einer Befestigungsanordnung 12 an einer im Gehäuse 7 fest angeordneten Trägerplatte 13 befestigt. In der Fig. 1 ist dargestellt, dass die Wandler bilaminar sind und aus einer Piezokeramikschicht 14 und einer Metallschicht 15 gebildet sind. Zwischen der Trägerplatte 13 und den Wandlern 10 ist Schreibflüssigkeit vorgesehen. Bei Anlegen von elektrischer Spannung an eine nicht dargestellte Kontaktierung eines Wandlers 10 bewegt sich dieser in die gestrichelt dargestellte Position. Bei Kurzschliessen eines Wandlers 10 schnellt er in die nicht gebogene, mit durchgezogenen Linien gezeichnete Stellung zurück und drückt dabei ein Tröpfchen Schreibflüssigkeit in Richtung der Wandlerachse nach vorne auf den Aufzeichnungsträger 3 heraus. Diese Ausführungsform der Wandler 10 mit Trägerplatte 13 wird vorzugsweise verwendet, wenn grössere Flüssigkeitströpfchen gewünscht werden.1 shows how rod-shaped piezoelectric transducers 10 are arranged perpendicular to the recording medium 3 in the housing 7. The transducers 10, which are designed as teeth of a comb (FIG. 2), work as a bending oscillator. The comb comb common to all transducers 11 is fastened with a fastening arrangement 12 to a carrier plate 13 fixedly arranged in the housing 7. 1 shows that the transducers are bilaminar and are formed from a piezoceramic layer 14 and a metal layer 15. Writing liquid is provided between the carrier plate 13 and the transducers 10. When electrical voltage is applied to a contact, not shown, of a transducer 10, this moves into the position shown in dashed lines. When a transducer 10 is short-circuited, it snaps back into the non-bent position drawn with solid lines and in doing so presses a droplet of writing fluid forward onto the recording medium 3 in the direction of the transducer axis. This embodiment of transducer 10 with carrier plate 13 is preferably used when larger liquid droplets are desired.

In der Fig. 1 und 2 ist ferner durch gestrichelte Linien angedeutet, dass die Trägerplatte 13 Nuten 16 aufweist, die unterhalb und parallel zum jeweiligen Wandler 10 verlaufen. Die Nuten 16 sind in der Fig. 3 deutlich ersichtlich.1 and 2 it is also indicated by dashed lines that the carrier plate 13 has grooves 16 which run below and parallel to the respective transducer 10. The grooves 16 are clearly visible in FIG. 3.

In Fig. 4 ist gezeigt, dass die Wandler bei einer mit Nuten 16 versehenen Trägerplatte dicht an dieser angebracht werden können, so dass eine im Aufbau kompakte Einheit erhalten wird. Durch die Nuten kann eine sehr gute Auflösung und eine gleich gute Ausrichtung der einzelnen Tintenausstösse erzielt werden.4 shows that the transducers can be attached closely to a carrier plate provided with grooves 16, so that a unit which is compact in construction is obtained. The grooves enable a very good resolution and an equally good alignment of the individual ink outputs.

In Fig. 9 ist gezeigt, dass Nuten 16 statt in der Trägerplatte 13 in den Wandlern 10 vorgesehen sind.9 shows that grooves 16 are provided in the transducers 10 instead of in the carrier plate 13.

Fig. 5 zeigt in einem weiteren Ausführungsbeispiel, dass zwischen Wandler 10 mit Trägerplatte 13 und Aufzeichnungsträger 3 eine Düsenplatte 17 angebracht ist, wobei jede Düse 18 in der Achsenverlängerung des Zwischenraumes zwischen Wandler 10 und der Trägerplatte 13 angeordnet ist. Bei dieser Ausführungsform können die Nuten 16 weggelassen werden. Durch die Düsen 18 kann eine vorbestimmte exakte Formung und Ausrichtung der Flüssigkeitströpfchen erhalten werden.5 shows in a further exemplary embodiment that a nozzle plate 17 is attached between transducer 10 with carrier plate 13 and recording medium 3, each nozzle 18 being arranged in the axis extension of the intermediate space between transducer 10 and carrier plate 13. In this embodiment, the grooves 16 can be omitted. A predetermined exact shaping and alignment of the liquid droplets can be obtained through the nozzles 18.

In Fig. 6 ist der Aufbau mehrerer Wandler 10 mit Trägerplatten 13 dicht hintereinander im Schreibergehäuse 7 gezeigt. Insbesondere beim Schreiben von Zeichen oder Bilder mit unterschiedlichen Farben ist der verhältnismässig geringe Abstand zwischen den Wandlern von grosser Bedeutung, da die Zeichen bzw. Bilder sehr deutlich erhalten werden können.6 shows the construction of a plurality of transducers 10 with carrier plates 13 in close succession in the pen housing 7. The relatively small distance between the transducers is particularly important when writing characters or images with different colors, since the characters or images can be preserved very clearly.

In Fig. 7 ist dargestellt, dass die Wandler 10 auf beiden Seiten der Trägerplatte 13 angeordnet sind. Die Wandler 10 können hierdurch extrem dicht hintereinander angebracht werden.7 shows that the transducers 10 are arranged on both sides of the carrier plate 13. The transducers 10 can hereby be attached extremely close together.

In den Ausführungsbeispielen gemäss den Fig. 6 und 7 wird die Düsenplatte 17 nicht unbedingt benötigt. Die Trägerplatten können stattdessen mit Nuten 16 (Fig. 1 bis 4) versehen sein. Es kann auch sowohl auf Düsenplatte 17 als auch auf Nuten 16 verzichtet werden.In the exemplary embodiments according to FIGS. 6 and 7, the nozzle plate 17 is not absolutely necessary. Instead, the carrier plates can be provided with grooves 16 (FIGS. 1 to 4). It is also possible to dispense with both nozzle plate 17 and grooves 16.

Claims (5)

1. A recording device (1 to 18) which operates with liquid droplets for the dot recording of analogue curves or alphanumerical characters and of images on a data carrier (3) where, for the formation of the liquid droplets, rod-shaped piezoelectric transducers (10) are provided which are arranged in series and which are clamped at one end and contacted in such manner that in the event of electrical voltage changes in the contact the transducers bend at right-angles to the plane defined by the transducers (10), where a carrier plate (13) is arranged in parallel to the transducers (10) at a distance such that when the transducers (10) spring back to their starting position liquid droplets are ejected from the recording device, characterised in that the ejection of the liquid droplets takes place approximately in the direction of the rod directly between the transducer (10) and the carrier plate (13).
2. A recording device as claimed in Claim 1, characterised in that between the transducer (10) and carrier plate (13) and the data carrier (3) there is arranged a nozzle plate (17), where each nozzle (18) is arranged in the axial extension of the interspace between each transducer (10) and the carrier plate (13).
3. A recording device as claimed in Claim 1, characterised in that the carrier plate (13) contains grooves (16) which extend beneath and in parallel to the respective transducer (10).
4. A recording device as claimed in Claim 1, characterised in that that side of each transducer (10) which faces towards the carrier plate (13) contains a groove (16) which extends in the longitudinal direction of the transducer.
5. A recording device as claimed in one of Claims 1 to 4, characterised in that the transducers (10) are arranged on both sides of the carrier plate (13).
EP84105201A 1983-05-10 1984-05-08 Liquid droplets recording device Expired EP0131704B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3317082 1983-05-10
DE19833317082 DE3317082A1 (en) 1983-05-10 1983-05-10 WRITING DEVICE WORKING WITH LIQUID DROPS

Publications (2)

Publication Number Publication Date
EP0131704A1 EP0131704A1 (en) 1985-01-23
EP0131704B1 true EP0131704B1 (en) 1988-09-14

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Family Applications (1)

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EP84105201A Expired EP0131704B1 (en) 1983-05-10 1984-05-08 Liquid droplets recording device

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US (1) US4566018A (en)
EP (1) EP0131704B1 (en)
JP (1) JPS59212275A (en)
DE (2) DE3317082A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879568A (en) * 1987-01-10 1989-11-07 Am International, Inc. Droplet deposition apparatus
US4998120A (en) * 1988-04-06 1991-03-05 Seiko Epson Corporation Hot melt ink jet printing apparatus
JP3041952B2 (en) * 1990-02-23 2000-05-15 セイコーエプソン株式会社 Ink jet recording head, piezoelectric vibrator, and method of manufacturing these
EP0678384B1 (en) * 1990-02-23 1997-08-20 Seiko Epson Corporation Drop-on-demand ink-jet printing head
US6186619B1 (en) 1990-02-23 2001-02-13 Seiko Epson Corporation Drop-on-demand ink-jet printing head
US5465108A (en) * 1991-06-21 1995-11-07 Rohm Co., Ltd. Ink jet print head and ink jet printer
JPH0596739A (en) * 1991-10-09 1993-04-20 Rohm Co Ltd Fabrication of ink jet print head
GB2283206B (en) * 1993-10-07 1997-03-19 Seiko Epson Corp Piezo-electric driver for an ink jet recording head,and its manufacturing method
DE19626428A1 (en) * 1996-07-01 1998-01-15 Heinzl Joachim Droplet cloud generator
DE10139397B4 (en) * 2001-08-10 2005-12-22 Tallygenicom Computerdrucker Gmbh Drop generator for microdrops, in particular nozzle head for ink printers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2527647C3 (en) * 1975-06-20 1981-06-25 Siemens AG, 1000 Berlin und 8000 München Writing implement that works with liquid droplets
US4158847A (en) * 1975-09-09 1979-06-19 Siemens Aktiengesellschaft Piezoelectric operated printer head for ink-operated mosaic printer units
JPS5933117B2 (en) * 1978-09-01 1984-08-13 株式会社日立製作所 Inkjet recording device
US4243995A (en) * 1979-06-01 1981-01-06 Xerox Corporation Encapsulated piezoelectric pressure pulse drop ejector apparatus
JPS57113075A (en) * 1980-12-30 1982-07-14 Fujitsu Ltd Ink jet head
DE3114192A1 (en) * 1981-04-08 1982-10-28 Siemens AG, 1000 Berlin und 8000 München WRITING DEVICE WORKING WITH LIQUID DROPS
DE3114224A1 (en) * 1981-04-08 1982-11-04 Siemens AG, 1000 Berlin und 8000 München WRITING DEVICE WORKING WITH LIQUID DROPS
EP0072685A1 (en) * 1981-08-14 1983-02-23 William Anthony Denne Droplets-generating device for an ink jet printer
US4453169A (en) * 1982-04-07 1984-06-05 Exxon Research And Engineering Co. Ink jet apparatus and method

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Publication number Publication date
JPH0436070B2 (en) 1992-06-15
EP0131704A1 (en) 1985-01-23
JPS59212275A (en) 1984-12-01
DE3317082A1 (en) 1984-11-15
DE3474008D1 (en) 1988-10-20
US4566018A (en) 1986-01-21

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