DE4139731A1 - Ink-jet matrix printer with single print element - has electromagnetic actuator for control flow through ink jet nozzle in each element - Google Patents

Ink-jet matrix printer with single print element - has electromagnetic actuator for control flow through ink jet nozzle in each element

Info

Publication number
DE4139731A1
DE4139731A1 DE19914139731 DE4139731A DE4139731A1 DE 4139731 A1 DE4139731 A1 DE 4139731A1 DE 19914139731 DE19914139731 DE 19914139731 DE 4139731 A DE4139731 A DE 4139731A DE 4139731 A1 DE4139731 A1 DE 4139731A1
Authority
DE
Germany
Prior art keywords
matrix printer
printer according
inkjet
individual elements
medium
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.)
Withdrawn
Application number
DE19914139731
Other languages
German (de)
Inventor
Manfred 5060 Bergisch Gladbach De Heinen
Original Assignee
Inno-Print Verpackungs- and Beschriftungssysteme 5060 Bergisch Gladbach De GmbH
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 Inno-Print Verpackungs- and Beschriftungssysteme 5060 Bergisch Gladbach De GmbH filed Critical Inno-Print Verpackungs- and Beschriftungssysteme 5060 Bergisch Gladbach De GmbH
Priority to DE19914139731 priority Critical patent/DE4139731A1/en
Publication of DE4139731A1 publication Critical patent/DE4139731A1/en
Withdrawn legal-status Critical Current

Links

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
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • 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
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2103—Features not dealing with the colouring process per se, e.g. construction of printers or heads, driving circuit adaptations
    • 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
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2002/041—Electromagnetic transducer

Abstract

The ink- jet matrix printer has a number of elements, each of which has an electromagnetic drive stage (13) that induces linear movement of an armature element (11). The armature connects with a needle (10) to displace a sealing element (12) to generate ink discharge through a nozzle (7). Ink is supplied to the nozzle through a central path from an inlet connection (3). The nozzles are set into a matrix plate with specific spacing. ADVANTAGE - Provides flexibility in layout.

Description

Die Erfindung bezieht sich auf einen Tintenstrahl-Matrixdrucker, der durch entsprechende Ansteuerung in der Lage ist, eine Punktmatrix zu erzeugen. Dieses kann sowohl eine Schrift sein, als auch eine willkürlich bestimmte Anordnung von Punkten und Linien.The invention relates to an ink jet matrix printer which by appropriate control is able to form a dot matrix produce. This can be a font as well as one arbitrarily determined arrangement of points and lines.

Tintenstrahl-Matrixdrucker sind beispielsweise aus den deutschen Offenlegungsschriften 33 02 617, 33 02 616 und 36 25 067 bekannt.Inkjet matrix printers are, for example, from the German Publications 33 02 617, 33 02 616 and 36 25 067 known.

Bei den bekannten Tintenstrahl-Matrixdruckern der eingangs genannten Art besteht die Anordnung immer aus einer Tintenkammer mit einer vorgesetzten Düsenplatte, in die die einzelnen Ausstoßdüsen der Farbe vorgegeben sind.In the known inkjet matrix printers of the type mentioned the arrangement always consists of an ink chamber with a superior nozzle plate into which the individual ejection nozzles of the color are specified.

An der Rückseite der Tintenkammer sind in der Regel die Verbindungselemente (Röhrchen oder Schläuche) angebracht, die in ihrem anderen Ende den Elektromagneten aufnehmen, der axial zu dem Verbindungselement angebracht ist.At the back of the ink chamber are usually the Fasteners (tubes or hoses) attached in their the other end, take up the electromagnet, which is axially to the Connection element is attached.

Dieses bedingt in der Regel eine starke und von der Mitte des Systems ausgehend unterschiedliche Krümmung der Verbindungselemente (Röhrchen oder Schläuche).This usually requires a strong and from the middle of the system starting from different curvature of the connecting elements (tubes or hoses).

Dieses führt zu unterschiedlichen Reibungen in den Verbindungselementen und dadurch auch zu Geschwindigkeitsverlusten.This leads to different friction in the connecting elements and thereby also to loss of speed.

Weiterhin wird dadurch eine lineare Ansteuerung der einzelnen Verschlußelemente problematisch oder nicht realisierbar.Furthermore, a linear control of the individual Closure elements problematic or not feasible.

Durch diese unterschiedliche Reibung in den Verbindungselementen wird auch die Wiederholgenauigkeit der Hubbewegungen, die in der Regel maximal 0,5 mm betragen, stark eingeschränkt. Due to this different friction in the connecting elements also the repeatability of the stroke movements, as a rule maximum 0.5 mm, severely restricted.  

Die Farbversorgung von Tintenstrahl-Matrixdruckern der eingangs genannten Art erfolgt in der Regel durch die Farbzuführung in die Tintenkammer. Von dort aus gelangt die Farbe unter leichtem Überdruck in alle Bereiche des Systems und auch in die Verbindungselemente (Röhrchen oder Schläuche). Da aber in den Bereichen des Systems in der Regel keine wesentliche mechanische Bewegung stattfindet, verbleibt die Farbe dort sehr lange, kann altern und zu kristallinen Ablagerungen führen.The ink supply of inkjet matrix printers of the beginning mentioned type is usually done by the ink supply in the Ink chamber. From there the color comes in with a slight overprint all areas of the system and also in the connecting elements (tubes or hoses). As a rule, however, none in the areas of the system If there is significant mechanical movement, the color remains there very long, can age and lead to crystalline deposits.

Diese führen dann zu Reibungsveränderungen in den Verbindungselementen, die zusätzliche Probleme in der Bewegungsgenauigkeit aufwerfen.These then lead to changes in friction in the connecting elements, which pose additional problems in the accuracy of movement.

Weiterhin ist nachteilig, daß ein Austauschen von defekten Einzelelementen im Bereich der Verbindungselemente (Röhrchen oder Schläuche) oder Ausstoßdüsen nicht möglich oder sehr problematisch ist.Another disadvantage is that an exchange of defective Individual elements in the area of the connecting elements (tubes or Hoses) or ejection nozzles is not possible or is very problematic.

Hiervon ausgehend ist nun die Aufgabe der Erfindung, den Tintenstrahl-Matrixdrucker der eingangs genannten Art dahingehend weiterzuentwickeln, daß mit ihm höhere Schreibgeschwindigkeiten erreicht werden können und eine wesentlich höhere Wiederholgenauigkeit der Hübe im Verschlußbereich der Düsen erreicht wird.Proceeding from this, it is the object of the invention, the inkjet matrix printer to further develop the type mentioned at the beginning, that higher writing speeds can be achieved with it and a significantly higher repeat accuracy of the strokes in the closure area the nozzle is reached.

Weiterhin sollen Ablagerungen im Tintenbereich verhindert, und eine wesentlich größere Flexibilität in der zur Verfügung stehenden Anzahl der Matrixen (Abstand von Mitte zu Mitte eines Punktes) erreicht werden. Ebenfalls soll die Servicefreundlichkeit für den Anwender erhöht werden.Furthermore, deposits in the ink area are to be prevented, and a much greater flexibility in the available Number of matrixes (distance from center to center of a point) reached will. The service friendliness for the user should also be increased will.

Diese Aufgabe wird ausgehend von den Tintenstrahl-Matrixdruckern der eingangs genannten Art dadurch gelöst, daß die bis jetzt bekannte kompakte Einheit eines Tintenstrahl-Matrixdruckers in Einzelelemente (1), wie in Fig. 1-5 dargestellt, aufgelöst wird.This object is achieved on the basis of the inkjet matrix printers of the type mentioned at the outset in that the previously known compact unit of an inkjet matrix printer is broken down into individual elements ( 1 ), as shown in FIGS. 1-5.

Jedes der Einzelemelente beinhaltet alle der zum Betrieb eines Tintenstrahl-Matrixdruckers benötigten Komponenten, wie elektro­ magnetischen Antrieb (13+14) mit dem den Hub erzeugenden Anker (11), an den die Verbindungsnadel (10) zum Verschlußelement (12+8) der Ausstoßdüse (7) fest angebracht ist, sowie Farbzufuhreinrichtung (3) und die Energiezuleitung (4).Each of the individual elements contains all of the components required for operating an inkjet matrix printer, such as an electromagnetic drive ( 13 + 14 ) with the armature ( 11 ) generating the stroke, to which the connecting needle ( 10 ) to the closure element ( 12 + 8 ) of the ejection nozzle ( 7 ) is firmly attached, as well as ink supply device ( 3 ) and the energy supply line ( 4 ).

Zu einer Matrix, wie bei einem Tintenstrahl-Matrixdrucker eingangs genannter Art benötigt, werden die Einzelelemente (1) durch die Aufnahme in die Rasterplatte (2), die eine feste Bestimmung der Abstände von Punktmitte zu Punktmitte darstellt.The individual elements ( 1 ) become a matrix, as required for an ink jet matrix printer of the type mentioned above, by being accommodated in the grid plate ( 2 ), which represents a fixed determination of the distances from the center of the point to the center of the point.

Bei einer verbesserten Ausführung wird der Abstand von Punktmitte zu Punktmittel auch mechanisch verstellbar, so daß dann die Schrifthöhe innerhalb des Schreibvorgangs mechanisch verändert werden kann.In an improved version, the distance from the center of the point becomes Dot means also mechanically adjustable so that the font height can be changed mechanically during the writing process.

Bei der dargestellten Bauweise mit alternierender Anordnung und unterschiedlicher Länge der flachgehaltenen Einzelelemente (1) wird der Einbau ohne Krümmung der Verbindungsröhrchen (9) möglich. Dadurch ergibt sich zwischen den Hub erzeugenden Magnettanker (11) und der darauf drückenden Feder (15) und dem Verschlußelement (12+8) der Ausstoßdüse (7) eine Gerade der Verbindungsnadel (10), die vorzugsweise aus Federdraht erstellt wird.In the construction shown, with an alternating arrangement and different lengths of the flat elements ( 1 ), installation is possible without bending the connecting tubes ( 9 ). This results in a straight line of the connecting needle ( 10 ) between the stroke-generating magnetic armature ( 11 ) and the spring ( 15 ) pressing thereon and the closure element ( 12 + 8 ) of the ejection nozzle ( 7 ), which is preferably created from spring wire.

Dadurch wird die Reproduzierbarkeit des Hubes sichergestellt.This ensures the reproducibility of the stroke.

Weiterhin erlaubt diese Art der Anordnung, eine wesentlich höhere Ablaufgeschwindigkeit bei den Hüben der Verschlußelemente, da keinerlei Krümmungsausgleich erfolgen muß.Furthermore, this type of arrangement allows a much higher one Running speed in the strokes of the closure elements, since none Compensation of curvature must take place.

Durch die Art der Farbzufuhr (3), die vorzugsweise ebenfalls in einer geraden Linie zu der Ausstoßdüse (7) angebracht ist, wird verhindert, daß sich innerhalb der Verbindungsröhrchen (9) Ablagerungen des eingesetzten Mediums, beispielsweise Farbe, ergeben können, da die neu hinzuströmende Farbe mit dem beinhaltenden Lösungsmittel jedwede Art von Ablagerungen verhindert oder ungünstigstenfalls wieder abbaut. The type of ink supply ( 3 ), which is preferably also attached in a straight line to the ejection nozzle ( 7 ), prevents deposits of the medium used, for example ink, from arising within the connecting tubes ( 9 ), since they are new incoming paint with the solvent contained prevents any kind of deposits or at worst removes them again.

Da die Einzelelemente (1) alternierend und unterschiedlich lang erstellt werden, wird der Hohlraum innerhalb jeder der Einheiten, in dem sich das zu verarbeitende Medium befindet, so gering gehalten, wie es die Bauform zuläßt.Since the individual elements ( 1 ) are created alternately and of different lengths, the cavity within each of the units in which the medium to be processed is located is kept as small as the design permits.

Da die Matrix (Abstand Punktmitte zu Punktmitte) des auszustoßenden Mediums durch die Rasterplatte (2) eine Veränderung der Matrix möglich, im Grundsatz die Veränderung der Schreibhöhe.Since the matrix (distance from the center of the point to the center of the point) of the medium to be ejected through the grid plate ( 2 ) enables the matrix to be changed, in principle the change in the writing height.

Da die Einzelelemente (1) lediglich an zwei Punkten befestigt sind, ist ein Wechsel eines Einzelelementes (1) sehr leicht zu realisieren.Since the individual elements ( 1 ) are only attached at two points, it is very easy to change an individual element ( 1 ).

Durch die für jedes Einzelelement separate Farbzufuhr (3) besteht die Möglichkeit jedes der Einzelelemente mit einer anderen Farbe (bzw. Farbton) zu versorgen. Dieses würde den Einsatz als Farbmarkierungssystem zulassen, aber auch als Aufzeichnungssystem für Permanentschreibsysteme kann dieses Einzelelement eingesetzt werden.The color supply ( 3 ), which is separate for each individual element, makes it possible to supply each of the individual elements with a different color (or color). This would permit use as a color marking system, but this individual element can also be used as a recording system for permanent writing systems.

Claims (12)

1. Tintenstrahl-Matrixdrucker zur Beschriftung von unterschiedlichen Materialien, dadurch gekennzeichnet, daß jedes Einzelelement eine komplette selbständige Einheit bildet,
  • - die jeweils ein elektromagnetisches Antriebselement so wie ein aus Federdraht (10) bestehendes Verbindungselement zu einem die Düse (7) verschließenden Verschlußelement aus Weichmaterialien (8) darstellen,
  • - zusammengefaßt zu einer unterschiedlichen Anzahl von Einzelelementen (1) über eine die Matrix, so wie die Schrifthöhe bestimmenden Rasterplatte (2),
  • - durch die unterschiedliche Länge, so wie die versetzte Bauweise der Einzelelemente (1), wird eine sehr geringe Bauhöhe erreicht,
  • - durch die unterschiedliche Länge und der versetzten Bauweise der Einzelelemente (1) sind die Verbindungen der Antriebselemente (10+11) zu den eigentlichen Verschlußelementen (12+8) ohne Krümmung der Verbindungsröhrchen (9) zu realisieren,
1. inkjet matrix printer for labeling different materials, characterized in that each individual element forms a complete independent unit,
  • - each of which represents an electromagnetic drive element such as a connecting element made of spring wire ( 10 ) to a closure element made of soft materials ( 8 ) which closes the nozzle ( 7 ),
  • - summarized into a different number of individual elements ( 1 ) via a matrix plate as well as the font height determining grid plate ( 2 ),
  • - Due to the different length, as well as the staggered construction of the individual elements ( 1 ), a very low construction height is achieved,
  • - Due to the different length and the offset construction of the individual elements ( 1 ), the connections of the drive elements ( 10 + 11 ) to the actual closure elements ( 12 + 8 ) can be realized without curvature of the connecting tubes ( 9 ),
so daß bei kurzzeitiger Erregung des magnetischen Teils (13+14) in dem Antriebselement (10+11) durch die direkte Verbindung zum Verschlußelement (12+8), jeweils eine bestimmte Menge des flüssigen Mediums austreten kann. dadurch gekennzeichnet, daß die Verbindung zwischen dem eigentlichen Antriebselement (13+14) und dem beweglichen Teil des Antriebselementes (11) über einen in der axialen Bewegungsrichtung vorzugshalber unflexibelen Federstahldraht (10) verbunden ist, so daß eine sehr hohe Wiederholgenauigkeit der Hubbewegung des Verschlußelementes (12+8) reproduzierbar ist.so that when the magnetic part ( 13 + 14 ) is briefly excited in the drive element ( 10 + 11 ) through the direct connection to the closure element ( 12 + 8 ), a certain amount of the liquid medium can escape. characterized in that the connection between the actual drive element ( 13 + 14 ) and the movable part of the drive element ( 11 ) is connected via a spring steel wire ( 10 ), which is preferably inflexible in the axial direction of movement, so that a very high repeatability of the stroke movement of the closure element ( 12 + 8 ) is reproducible. 2. Tintenstrahl-Matrixdrucker nach Anspruch 1, dadurch gekennzeichnet, daß jedes der Einzelelemente (1) vom magnetischen Antriebselement (13+14) bis zur Ausstoßdüse (7) eine vollkommen selbständige Einheit ist.2. Inkjet matrix printer according to claim 1, characterized in that each of the individual elements ( 1 ) from the magnetic drive element ( 13 + 14 ) to the ejection nozzle ( 7 ) is a completely independent unit. 3. Tintenstrahl-Matrixdrucker nach Anspruch 1 und 2, dadurch gekennzeichnet, daß jede der Einzeleinheiten (1) mit einem anderen Medium oder anderer Farbe betrieben werden kann.3. Inkjet matrix printer according to claim 1 and 2, characterized in that each of the individual units ( 1 ) can be operated with a different medium or different color. 4. Tintenstrahl-Matrixdrucker nach Anspruch 1, dadurch gekennzeichnet, daß die Verbindungsröhrchen (9) aus dem konischen Teil (16) des Antriebselementes austreten und der daher sehr klein gehalten werden kann.4. Inkjet matrix printer according to claim 1, characterized in that the connecting tubes ( 9 ) emerge from the conical part ( 16 ) of the drive element and which can therefore be kept very small. 5. Tintenstrahl-Matrixdrucker nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Verbindungsröhrchen (9) zwischen Antriebselement und Düse (7) unterschiedlich lang sein können.5. inkjet matrix printer according to claim 1 and 2, characterized in that the connecting tube ( 9 ) between the drive element and nozzle ( 7 ) can be of different lengths. 6. Tintenstrahl-Matrixdrucker nach Anspruch 5, dadurch gekennzeichnet, daß die Verbindungselemente zwischen Magnetkern (13+14) und Verschlußelement (12+8) unterschiedlich lang sein können.6. inkjet matrix printer according to claim 5, characterized in that the connecting elements between the magnetic core ( 13 + 14 ) and closure element ( 12 + 8 ) can be of different lengths. 7. Tintenstrahl-Matrixdrucker nach Anspruch 2 bis 6, dadurrch gekennzeichnet, daß durch die versetzte Anordnung der flachgehaltenen und unterschiedlich langgehaltenen Einzelelemente (1) eine sehr geringe Bauhöhe möglich ist. 7. inkjet matrix printer according to claim 2 to 6, dadurrch characterized in that a very small overall height is possible by the offset arrangement of the flat-held and differently long individual elements ( 1 ). 8. Tintenstrahl-Matrixdrucker nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß die Aufteilung der Einzelelemente (1) zu einer Matrix durch eine auswechselbare Rasterplatte (2) realisiert wird.8. inkjet matrix printer according to claim 1 to 7, characterized in that the division of the individual elements ( 1 ) into a matrix is realized by an interchangeable grid plate ( 2 ). 9. Tintenstrahl-Matrixdrucker nach Anspruch 8, dadurch gekennzeichnet, daß die Rasterplatte (2) flexible Aufteilungen der Abstandmaße von Mitte zu Mitte der Ausstoßdüsen (7) der Einzelelemente zulassen.9. inkjet matrix printer according to claim 8, characterized in that the grid plate ( 2 ) allow flexible division of the spacing from center to center of the ejection nozzles ( 7 ) of the individual elements. 10. Tintenstrahl-Matrixdrucker nach Anspruch 1 bis 9, dadurch gekennzeichnet, daß die Einzelelemente (1) des Gesamtsystems leicht auszuwechseln sind.10. inkjet matrix printer according to claim 1 to 9, characterized in that the individual elements ( 1 ) of the overall system are easy to replace. 11. Tintenstrahl-Matrixdrucker nach Anspruch 1, dadurch gekennzeichnet, daß die Aufnahmemenge des benutzten Mediums sehr gering gehalten wurde. Dieses Medium wird durch zusätzlich nachströmendes frisches Medium permanent erfrischt, und daher sind keine Ablagerungen des Mediums oder von Feststoffen aus dem Medium möglich.11. Inkjet matrix printer according to claim 1, characterized in that that the intake amount of the medium used is kept very low has been. This medium is replaced by fresh water Medium is constantly refreshed, and therefore there are no deposits of the Medium or of solids from the medium possible.
DE19914139731 1991-12-03 1991-12-03 Ink-jet matrix printer with single print element - has electromagnetic actuator for control flow through ink jet nozzle in each element Withdrawn DE4139731A1 (en)

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DE19914139731 DE4139731A1 (en) 1991-12-03 1991-12-03 Ink-jet matrix printer with single print element - has electromagnetic actuator for control flow through ink jet nozzle in each element

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US7661793B2 (en) 1997-07-15 2010-02-16 Silverbrook Research Pty Ltd Inkjet nozzle with individual ink feed channels etched from both sides of wafer
US7708372B2 (en) 1997-07-15 2010-05-04 Silverbrook Research Pty Ltd Inkjet nozzle with ink feed channels etched from back of wafer
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