EP1910087B1 - Printing apparatus for controlling the printing head of a printing cartridge - Google Patents

Printing apparatus for controlling the printing head of a printing cartridge Download PDF

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Publication number
EP1910087B1
EP1910087B1 EP06761748A EP06761748A EP1910087B1 EP 1910087 B1 EP1910087 B1 EP 1910087B1 EP 06761748 A EP06761748 A EP 06761748A EP 06761748 A EP06761748 A EP 06761748A EP 1910087 B1 EP1910087 B1 EP 1910087B1
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EP
European Patent Office
Prior art keywords
signal
master
pulses
address
printing system
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Not-in-force
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EP06761748A
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German (de)
French (fr)
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EP1910087A1 (en
Inventor
Werner SCHÄFFER
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APS Alternative Printing Services GmbH
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APS Alternative Printing Services GmbH
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Publication of EP1910087A1 publication Critical patent/EP1910087A1/en
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    • 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
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04541—Specific driving circuit
    • 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
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04543—Block driving
    • 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
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0458—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on heating elements forming bubbles
    • 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
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform
    • 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
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04591—Width of the driving signal being adjusted

Landscapes

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

Abstract

A printing system triggers the print head of a conventional printer cartridge configured per se for water-based printing ink. The printer cartridge print head includes ink ejector elements arranged in a matrix and a heating element of an ink ejector element that is activated by use of an address signal functioning as a line signal and by use of a master signal functioning as a column signal. The master pulses of the master signal have a lesser signal amplitude than the address pulses of the address signal (AS1). The printing ink in the printer cartridge has a high proportion of alcohol.

Description

Die Erfindung betrifft eine Druckvorrichtung gemäß Oberbegriff des Anspruchs 1.The invention relates to a printing device according to the preamble of claim 1.

Bekannte Drucksysteme verwenden Druckerpatronen, bei denen der Druckkopf in der Druckerpatrone integriert angeordnet ist. Derartige Druckerpatronen sind herkömmlich mit Druckertinte auf Wasserbasis befüllt. Zum Bedrucken nicht saugender Oberflächen, wie Kunststoffoberflächen, Aluminium oder andere Metalloberflächen, sind Druckertinten auf Wasserbasis nicht geeignet, da diese dort nicht wischfest austrocknen. Aufdrucke mit Druckertinte auf Wasserbasis lassen sich von solchen Oberflächen auch noch nach längerer Zeit problemlos mit der Hand abwischen.Known printing systems use printer cartridges in which the print head is integrated in the printer cartridge. Such printer cartridges are conventionally filled with water-based printer ink. For printing non-absorbent surfaces, such as plastic surfaces, aluminum or other metal surfaces, water-based printer inks are not suitable because they do not wipe dry there. Water-based printing inks can be easily wiped off such surfaces even after a long time by hand.

Aus der US 5 946 012 A ist eine Tintenstrahl-Druckvorrichtung für Druckerpatronen bekannt, bei denen die Tintenausstoßelemente, die in einer Matrix angeordnet sind, mittels eines Spaltensignals (Stammsignals) und eines Zeilensignals (Adresssignals) angesteuert werden. Die Funktion der Ansteuerung ist insbesondere in dieser Druckschrift in Spalte 23 mit Bezug auf die dort angegebenen Figuren 25 bis 27 beschrieben. Dort werden Heizwiderstände mittels zugeordneten Feldeffekttransistoren selektiv angesteuert, so dass die Heizwiderstände einen Tintenausstoß in bekannter Weise erzeugen.From the US Pat. No. 5,946,012 For example, there is known an ink jet printing apparatus for printer cartridges in which the ink ejection elements arranged in a matrix are driven by a column signal (master signal) and a line signal (address signal). The function of the control is described in particular in this document in column 23 with reference to the figures 25 to 27 given there. There heating resistors are selectively controlled by means of associated field effect transistors, so that the heating resistors produce an ink ejection in a known manner.

Der Erfindung liegt die Aufgabe zugrunde, eine Druckvorrichtung zur Ansteuerung des Druckkopfes von herkömmlichen Druckerpatronen zu schaffen, mit dem gute und insbesondere wischfeste Druckergebnisse zur industriellen Kennzeichnung auch auf nicht saugenden Oberflächen realisierbar sind.The invention has for its object to provide a printing device for controlling the printhead of conventional printer cartridges, with the good and In particular wipe-resistant printing results for industrial marking can also be realized on non-absorbent surfaces.

Die Lösung dieser Aufgabe erhält man durch die im Anspruch 1 angegebenen Merkmale. Bei herkömmlichen Druckerpatronen mit integriertem Druckkopf, die an sich für Drucktinte auf Wasserbasis vorgesehen sind, werden die Heizelemente der Tintenausstoßelemente mit gleichen Spannungswerten für die Spalten- und Zeilensignale der Matrixanordnung angesteuert. Dabei werden die Heizelemente mit relativ hohen und langen Spannungsimpulsen betätigt. Beim Gegenstand der vorliegenden Erfindung ist dagegen vorgesehen, dass die Spaltensignale, die auch als Stammsignale bezeichnet werden können, Stammimpulse haben, die eine geringere Signalamplitude besitzen als die Adressimpulse des Adresssignals, welches als Zeilensignal bezeichnet werden kann. Es wird erfmdungsgemäß also eine Aufteilung der Adresssignale und der Stammsignale vorgesehen, so dass hier mit unterschiedlichen Spannungswerten und vorzugsweise auch mit unterschiedlichen Impulsbreiten die Ansteuerung erfolgen kann. Dadurch wird ein optimales Druckergebnis mit einer Druckertinte mit hohem Alkoholanteil erreicht, wobei als Alkohol vorzugsweise Ethanol verwendet wird.The solution to this problem is obtained by the features specified in claim 1. In conventional integrated printhead ink cartridges, which are themselves water-based inks, the heating elements of the ink ejection elements are driven with equal voltage values for the column and row signals of the matrix array. The heating elements are actuated with relatively high and long voltage pulses. In contrast, in the subject matter of the present invention, it is provided that the column signals, which may also be referred to as master signals, have master pulses which have a lower signal amplitude than the address pulses of the address signal, which may be referred to as a row signal. According to the invention, therefore, a division of the address signals and of the master signals is provided, so that activation can take place here with different voltage values and preferably also with different pulse widths. As a result, an optimal printing result is achieved with a printer ink with a high alcohol content, ethanol preferably being used as the alcohol.

Versuche haben dabei gezeigt, dass durch diese Maßnahme Druckertinte mit hohem Alkoholanteil in diesen herkömmlichen Druckerpatronen mit integriertem Druckkopf Verwendung finden kann und optimale Druckergebnisse erzielt werden können, die auf nicht saugenden Oberflächen bereits unmittelbar nach dem Druck wischfest sind.Experiments have shown that this measure printer ink can be used with high alcohol content in these conventional printer cartridges with built-in printhead and optimal printing results can be achieved that are wiping on non-absorbent surfaces immediately after printing.

Die erfindungsgemäße Ansteuerung der Heizelemente der Tintenausstoßelemente mit geringerer elektrischer Energie berücksichtigt die Tatsache, dass Druckertinte auf Wasserbasis einen höheren Siedepunkt hat, als Druckertinte auf Alkoholbasis.The driving of the heating elements of the lower-energy ink ejection elements according to the present invention takes into consideration the fact that water-based ink is higher in boiling point than the alcohol-based ink.

Vorteilhaft ist es in diesem Zusammenhang, wenn die Signalamplitude der Stammimpulse deutlich niedriger ist als die Signalamplitude der Adressimpulse. So kann die Signalamplitude der Stammimpulse im Bereich zwischen 6 Volt und 9 Volt liegen, während die Adressimpulse etwa eine Signalamplitude von 12 Volt haben. Bei einer Signalamplitude der Stammimpulse im Bereich zwischen 6 Volt und 9 Volt wurden mit Impulsbreiten für die Adressimpulse im Bereich zwischen 1700ns und 2100ns optimale Druckergebnisse auf unterschiedlichen nicht saugenden Oberflächen erzielt. Die Impulsbreite der Stammimpulse lag dabei bei 2800ns.It is advantageous in this context if the signal amplitude of the master pulses is significantly lower than the signal amplitude of the address pulses. Thus, the signal amplitude of the stem pulses in the range between 6 volts and 9 volts while the address pulses have approximately a signal amplitude of 12 volts. With a signal amplitude of the master pulses in the range between 6 volts and 9 volts, pulse widths for the address pulses in the range between 1700 ns and 2100 ns achieved optimum printing results on different non-absorbent surfaces. The pulse width of the stem pulses was 2800ns.

Es kann besonders vorteilhaft sein, die Impulsbreite der Adressimpulse durch eine entsprechende Impulsbreitensteuerung und/oder eine Amplitudensteuerung auf gewünschte Werte zur Anpassung an besondere Anwendungen einstellen zu können.It may be particularly advantageous to be able to set the pulse width of the address pulses to desired values for adaptation to special applications by means of a corresponding pulse width control and / or amplitude control.

Weiterhin wurde festgestellt, dass es für gute Druckergebnisse wesentlich sein kann, dass die Versorgungsspannungen zur Erzeugung der Adressimpulse und der Stammimpulse aus separaten und jeweils geregelten Spannungsquellen abgeleitet werden. Auf diese Weise wird eine gegenseitige Beeinflussung der Signale sicher ausgeschlossen.Furthermore, it has been found that it can be essential for good printing results that the supply voltages for generating the address pulses and the master pulses are derived from separate and respectively regulated voltage sources. In this way, a mutual influence of the signals is safely excluded.

Besonders vorteilhaft ist es, wenn die verwendete Druckerpatrone mit Druckkopf eine herkömmliche Druckerpatrone ist, die an sich für Druckertinte auf Wasserbasis vorgesehen ist. Derartige Druckerpatronen mit integriertem Druckkopf sind sehr betriebssicher und als Massenprodukt entsprechend preiswert in der Anschaffung.It is particularly advantageous if the printer cartridge with printhead used is a conventional printer cartridge, which is itself provided for water-based printer ink. Such printer cartridges with integrated printhead are very reliable and inexpensive as a mass product in the purchase.

Wird eine solche herkömmliche Druckerpatrone verwendet, so kann die erfindungsgemäße Druckvorrichtung ggf auch als eine Anpassungsschnittstelle zwischen einer herkömmlichen Steuerung und den zugehörigen herkömmlichen Druckerpatronen ausgebildet sein.If such a conventional printer cartridge is used, the printing device according to the invention can optionally also be designed as an adaptation interface between a conventional controller and the associated conventional printer cartridges.

Es wird außerdem vorgeschlagen, dass die Druckertinte zur Verwendung in einer Druckerpatrone des erfindungsgemäßen Drucksystems einen Alkoholvolumenanteil von über 70 % hat. Vorzugsweise sind der Druckertinte auf Ethanolbasis ein oder mehrer Additive beigefügt, welche die Verwendung der Druckertinte in einer herkömmlichen Druckerpatrone ermöglichen und/oder die Eigenschaften z.B. bezüglich Untergrundbenetzung, Haftung, Eintrocknungsverhalten der Tinte verbessern.It is also proposed that the printing ink for use in a printing cartridge of the printing system according to the invention has an alcohol volume fraction of more than 70%. Preferably, the ethanol-based printing ink is accompanied by one or more additives which enable the use of the printing ink in a conventional printer cartridge and / or the properties, for example with respect to background wetting, adhesion, drying behavior of the ink.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention will be explained in more detail with reference to an embodiment shown in the drawing.

Es zeigen:

  • Figur 1 die Druckvorrichtung in Form eines Blockdiagramms,
  • Figur 2 einen Ausschnitt aus einer Matrixanordnung der den Druckkopf bildenden Tintenausstoßelemente und
  • Figur 3 eine Darstellung der Adressimpulse und der Stammimpulse.
Show it:
  • FIG. 1 the printing device in the form of a block diagram,
  • FIG. 2 a section of a matrix arrangement of the printhead forming ink ejection elements and
  • FIG. 3 a representation of the address pulses and the master pulses.

Der in Figur 1 dargestellten Druckvorrichtung kann über eine Eingabeeinheit 1 ein gewünschter Druckauftrag eingegeben werden. Dieser wird in einer herkömmlichen Systemsteuerung 2 in geeignete Adresssignale AS und Stammsignale SS umgesetzt, die an sich zur Ansteuerung einer herkömmlichen Druckerpatrone mit integriertem Druckkopf geeignet sind. Nachgeschaltete Signalregler SR1 und SR2 geben ausgangsseitig nun die geeigneten Signalmuster ab, die zur Ansteuerung des Druckkopfes in der mit Druckertinte auf Alkoholbasis befüllten Druckerpatrone geeignet sind. Mittels einer Impulsbreitensteuerung PW werden die Adressimpulse des Adresssignals AS in ihrer Impulsbreite reduziert, so dass die Adressimpulse eine geringere Impulsbreite haben als die Stammimpulse, welches die bevorzugte Ausführungsform darstellt. Dabei hat das am Ausgang von SR2 auftretende Stammsignal SS2 eine niedrigere, mittels einer geregelten Spannungsversorgung 4 fest eingestellte Impulsamplitude als das Adresssignal AS1. Die Veränderung des ursprünglichen Stammsignals SS zu dem ausgangsseitigen Stammsignal SS2 erfolgt im Signalregler SR2, der mittels einer geregelten Spannungsversorgung 4 die Umformung des Stammsignals SS zu dem spannungsreduzierten Stammsignal SS2 vornimmt. Das Adresssignal AS1 und das Stammsignal SS2 werden nun zur Ansteuerung des Druckkopfes in der Druckerpatrone 5 verwendet. Dabei ist das Stammsignal SS2 in Kombination mit dem Adresssignal AS1 maßgeblich für die Ansteuerung und die dadurch erfolgende Erhitzung der Heizelemente der Tintenausstoßelemente des Druckkopfes. Durch diese Erhitzung wird bekanntlich die Druckertinte erhitzt und dadurch in Form von kleinen Tintentropfen am Druckkopf ausgestoßen.The in FIG. 1 shown printing device can be entered via an input unit 1, a desired print job. This is implemented in a conventional system controller 2 in suitable address signals AS and master signals SS, which are suitable for driving a conventional printer cartridge with integrated printhead. Downstream signal controllers SR1 and SR2 output the appropriate signal patterns that are suitable for controlling the print head in the printer cartridge filled with alcohol-based printer ink. By means of a pulse width control PW, the address pulses of the address signal AS are reduced in their pulse width, so that the address pulses have a smaller pulse width than the master pulses, which represents the preferred embodiment. In this case, the master signal SS2 occurring at the output of SR2 has a lower pulse amplitude fixed by means of a regulated voltage supply 4 than the address signal AS1. The change of the original master signal SS to the output-side master signal SS2 takes place in the signal regulator SR2, which by means of a regulated voltage supply 4, the transformation of the master signal SS to the voltage-reduced master signal SS2 performs. The address signal AS1 and the master signal SS2 are now used to drive the print head in the printer cartridge 5. In this case, the master signal SS2 in combination with the address signal AS1 is decisive for the control and the heating of the heating elements of the ink ejection elements of the print head taking place as a result. This heating is known to heat the printer ink and thereby expel it in the form of small drops of ink on the printhead.

Eine derart angesteuerte Druckerpatrone, die mit einer Druckertinte auf Alkoholbasis mit einem Alkoholvolumenanteil von weit über 70 % , vorzugsweise im Bereich zwischen 80% und 95%, befüllt ist, ist zum Bedrucken nicht saugender Oberflächen sehr gut geeignet, wobei selbstverständlich auch saugende Oberflächen problemlos bedruckt werden können.Such a controlled printer cartridge, which is filled with an alcohol-based ink with an alcohol volume fraction of well over 70%, preferably in the range between 80% and 95%, is very well suited for printing non-absorbent surfaces, of course, printed on absorbing surfaces easily can be.

Eine Spannungsreduzierung der Einzelimpulse des Stammsignals in Verbindung mit einem nur in der Impulsbreite reduzierten Adresssignal hat die besten wischfesten Druckergebnisse erbracht.A voltage reduction of the individual pulses of the master signal in conjunction with an address signal reduced only in the pulse width has yielded the best smear-resistant printing results.

Die Matrixanordnung von Figur 2 zeigt, dass die Heizwiderstände R, die die Heizelemente der einzelnen Tintenausstoßelemente bilden, zu einer Matrix angeordnet sind und von jeweils zugeordneten Feldeffekttransistoren FT angesteuert werden. Dabei kann eine gemeinsames Bezugspotenzial - Gleichspannung oder Massepotenzial - an den Leitungen G1 bis G3 anliegen. Die Stammsignale und Adresssignale können an mehrere Spalten und Zeilen der Matrix eingespeist werden, so dass eben auch von Spaltensignalen (Stammsignalen) und Zeilensignalen (Adresssignalen) gesprochen werden kann. In der hier ausschnittsweise dargestellten Matrix, die durchaus 300 Heizelemente umfassen kann, können den Stammleitungen SS21 bis SS23 Stammsignale SS2 separat zugeführt werden, während entsprechend den Adressleitungen AS 11 bis AS 13 Adresssignale AS 1 einzeln zugeführt werden können.The matrix arrangement of FIG. 2 shows that the heating resistors R, which form the heating elements of the individual ink ejection elements, are arranged in a matrix and are driven by associated field-effect transistors FT. In this case, a common reference potential - DC voltage or ground potential - be applied to the lines G1 to G3. The master signals and address signals can be fed to a plurality of columns and rows of the matrix, so that it is also possible to speak of column signals (master signals) and line signals (address signals). In the matrix shown in detail here, which may well include 300 heating elements, the trunk lines SS21 to SS23 trunk signals SS2 can be supplied separately, while according to the address lines AS 11 to AS 13 address signals AS 1 can be supplied individually.

Um beispielsweise das oben links dargestellte Heizelement R1 für einen Tintenausstoß anzusteuern, ist es erforderlich, dass der Stammleitung SS21 und der Adressleitung AS 11 jeweils ein Stammsignal SS2 mit geringerer Spannung und ein Adresssignal AS 1 mit geringerer Impulsbreite gleichzeitig zugeführt werden, wobei zu gewährleisten ist, dass der Adressimpuls innerhalb des größeren Zeitfensters des zugehörigen Stammimpulses des Stammsignals SS2 am Feldeffekttransistor FT1 anliegt.For example, in order to drive the heating element R1 shown at the top left for ink ejection, it is necessary to simultaneously supply a master signal SS2 with a lower voltage and an address signal AS1 with a smaller pulse width to the master line SS21 and the address line AS11, it being necessary to ensure the address pulse is applied to the field effect transistor FT1 within the larger time window of the associated master pulse of the master signal SS2.

Je nach Beschaffenheit der verwendeten Druckertinte kann eine individuelle Einstellung der Impulsbreiten und der Impulsspannungen zweckmäßig sein.Depending on the nature of the printer ink used, an individual adjustment of the pulse widths and the pulse voltages may be expedient.

In Figur 3 ist die zeitliche Zuordnung von Stammimpuls SI und Adressimpuls AI dargestellt, wobei die gleiche Zeitbasis t zugrunde liegt. Die Impulsamplituden liegen hier bei 8Volt (SS2) und 12Volt (AS1).In FIG. 3 the time assignment of master pulse SI and address pulse AI is shown, based on the same time base t. The pulse amplitudes are here at 8 volts (SS2) and 12 volts (AS1).

Claims (14)

  1. Printing system having a conventional printer cartridge (5) for triggering the print head of the printer cartridge (5),
    which is intended per se for water-based printing ink, and whose printer head has ink ejector elements arranged in a matrix, wherein the printing ink in the printer cartridge (5) has a proportion of alcohol and the particular heating element to be actuated of an ink ejector element is activated by means of an address signal functioning as line signal and by means of a master signal functioning as a column signal
    characterised in that
    the master pulses of the master signal (SS2) have a lesser signal amplitude than the address pulses of the address signal (AS1).
  2. Printing system as defined by claim 1, characterised in that
    the address pulses of the address signal (AS1) have a lesser pulse width than the master pulses of the master signal (SS2).
  3. Printing system as defined by claim 1, characterised in that
    the master pulses of the master signal (SS2) have a lesser pulse width than the address pulses of the address signal (AS1).
  4. Printing system as defined by one of the claims 1 or 2, characterised in that
    the address pulses of the address signal (AS1) have a pulse width in the range between 1700ns and 2100ns, wherein master pulses of the master signal (SS2) have a pulse width of approximately 2800ns.
  5. Printing system as defined by one of the foregoing claims, characterised in that
    the signal amplitude of the master pulses is in the range 6 Volts and 9 Volts.
  6. Printing system as defined by one of the foregoing claims , characterized in that
    the signal amplitude of the address signal (AS1) is approximately 12 Volts.
  7. Printing system as defined by one of the foregoing claims, characterised in that
    the pulse width and/or the signal amplitude of the master pulses and/or address pulses is individually adjustable.
  8. Printing system as defined by one of the foregoing claims, characterised in that
    the address signals (AS1) on the one hand and the master signals on the other are generated by means of separate, regulated supply voltages.
  9. Printing system as defined by one of the foregoing claims, characterised in that
    the printing system acts as an adapting interface between a conventional print head controler and the associated conventional printer cartridges (5) with integrated print heads, and it includes signal regulators (SR1, SR2) for varying the mastes pulses and/or adress pulses.
  10. Printing system as defined by one of the foregoing claims, characterised in that
    the printing ink has a volumetric proportion of alcohol of over 70%.
  11. Printing system as defined by one of the foregoing claims, characterised in that
    the alcohol base of the printing ink comprise one, two, or more different types of alcohol.
  12. Printing system as defined by one of the foregoing claims, characterised in that
    one or more additives, which makes it possible to use the printing ink in a conventional printer cartridge and/or improve the properties, for instance with regard to background moistening, adhesion, and drying performance of the ink, are added to the printing ink.
  13. Printing system as defined by one of the foregoing claims, characterised in that
    the alcohol-based printing ink contains dye or pigment and binders.
  14. Printing system as defined by one of the foregoing claims, characterised in that
    the printing ink contains ethanol as the alcohol.
EP06761748A 2005-07-01 2006-06-30 Printing apparatus for controlling the printing head of a printing cartridge Not-in-force EP1910087B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005030778 2005-07-01
PCT/DE2006/001146 WO2007003174A1 (en) 2005-07-01 2006-06-30 Printing system for controlling the printing head of a printing cartridge

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Publication Number Publication Date
EP1910087A1 EP1910087A1 (en) 2008-04-16
EP1910087B1 true EP1910087B1 (en) 2010-06-23

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EP06761748A Not-in-force EP1910087B1 (en) 2005-07-01 2006-06-30 Printing apparatus for controlling the printing head of a printing cartridge

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US (1) US7794033B2 (en)
EP (1) EP1910087B1 (en)
JP (1) JP4987863B2 (en)
AT (1) ATE471821T1 (en)
DE (1) DE502006007269D1 (en)
ES (1) ES2350421T3 (en)
PT (1) PT1910087E (en)
WO (1) WO2007003174A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8142558B2 (en) * 2008-03-31 2012-03-27 Videojet Technologies Inc. Thermal ink jet ink composition
US8142559B2 (en) 2008-03-31 2012-03-27 Casey Robertson Thermal ink jet ink composition
US8778074B2 (en) * 2009-07-20 2014-07-15 Markem-Imaje Corporation Solvent-based inkjet ink formulations
WO2011041364A1 (en) 2009-09-30 2011-04-07 Videojet Technologies Inc. Thermal ink jet ink composition
WO2011041368A1 (en) 2009-09-30 2011-04-07 Videojet Technologies Inc. Thermal ink jet ink composition

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5874974A (en) * 1992-04-02 1999-02-23 Hewlett-Packard Company Reliable high performance drop generator for an inkjet printhead
US5635968A (en) * 1994-04-29 1997-06-03 Hewlett-Packard Company Thermal inkjet printer printhead with offset heater resistors
US6439697B1 (en) * 1999-07-30 2002-08-27 Hewlett-Packard Company Dynamic memory based firing cell of thermal ink jet printhead
TW514604B (en) * 2001-08-10 2002-12-21 Int United Technology Co Ltd Recognition circuit for an ink jet printer
US20030142159A1 (en) 2002-01-31 2003-07-31 Askeland Ronald A. Estimating local ejection chamber temperature to improve printhead performance
US6908186B2 (en) * 2003-03-26 2005-06-21 Eastman Kodak Company Inkjet ink composition and an ink/receiver combination
JP2005007594A (en) * 2003-06-16 2005-01-13 Canon Inc Recording head and its element substrate

Also Published As

Publication number Publication date
EP1910087A1 (en) 2008-04-16
DE502006007269D1 (en) 2010-08-05
PT1910087E (en) 2010-09-24
US20080198190A1 (en) 2008-08-21
US7794033B2 (en) 2010-09-14
ES2350421T3 (en) 2011-01-21
JP2008544880A (en) 2008-12-11
WO2007003174A1 (en) 2007-01-11
JP4987863B2 (en) 2012-07-25
ATE471821T1 (en) 2010-07-15

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