EP1910087A1 - Printing system for controlling the printing head of a printing cartridge - Google Patents

Printing system for controlling the printing head of a printing cartridge

Info

Publication number
EP1910087A1
EP1910087A1 EP06761748A EP06761748A EP1910087A1 EP 1910087 A1 EP1910087 A1 EP 1910087A1 EP 06761748 A EP06761748 A EP 06761748A EP 06761748 A EP06761748 A EP 06761748A EP 1910087 A1 EP1910087 A1 EP 1910087A1
Authority
EP
European Patent Office
Prior art keywords
signal
printing system
pulses
address
master
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.)
Granted
Application number
EP06761748A
Other languages
German (de)
French (fr)
Other versions
EP1910087B1 (en
Inventor
Werner SCHÄFFER
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.)
APS Alternative Printing Services GmbH
Original Assignee
APS Alternative Printing Services 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 APS Alternative Printing Services GmbH filed Critical APS Alternative Printing Services GmbH
Publication of EP1910087A1 publication Critical patent/EP1910087A1/en
Application granted granted Critical
Publication of EP1910087B1 publication Critical patent/EP1910087B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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

Definitions

  • Printing system for controlling the print head of a printer cartridge
  • the invention relates to a printing system for controlling the print head of a printer cartridge according to the preamble of claim 1.
  • printer cartridges in which the print head is integrated in the printer cartridge.
  • Such printer cartridges are conventionally filled with water-based printer ink.
  • 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.
  • US 5,946,012 A discloses an ink jet printing system for printer cartridges in which the ink ejection elements arranged in a matrix are driven by means of 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.
  • the invention has for its object to provide a printing system 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.
  • the heating elements of the ink ejection elements are driven with equal voltage values for the column and row signals of the array.
  • the heating elements are actuated with relatively high and long voltage pulses.
  • the column signals which may also be referred to as master signals
  • 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.
  • a division of the address signals and of the master signals is provided, so that the control can take place here with different voltage values and preferably also with different pulse widths.
  • an optimal printing result is achieved with a printer ink with a high alcohol content, ethanol preferably being used as the alcohol.
  • 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.
  • 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.
  • Root pulses is significantly lower than the signal amplitude of the address pulses.
  • 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.
  • 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.
  • 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.
  • the printing system according to the invention may optionally also be designed as an adaptation interface between a conventional controller and the associated conventional printer cartridges.
  • the printer ink for use in a printer cartridge of the inventive printing system has an alcohol volume fraction of over 70%.
  • 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.
  • FIG. 1 shows the printing system in the form of a block diagram
  • Figure 2 is a detail of a matrix arrangement of the printhead forming ink ejection elements
  • FIG. 3 shows a representation of the address pulses and the master pulses.
  • the printing system shown in Figure 1 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 SRI and SR2 now output the appropriate signal patterns on the output side, which are suitable for controlling the print head in the printer cartridge filled with alcohol-based printer ink.
  • a pulse width control PW 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 Stanimimpulse, which is the preferred embodiment.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 respectively assigned field effect transistors FT.
  • a common reference potential - DC voltage or ground potential - be applied to the lines Gl 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).
  • the trunk lines SS21 to SS23 trunk signals SS2 can be supplied separately, while according to the address lines ASI l to AS 13 address signals ASl can be supplied individually.
  • the heating element Rl shown above for ink ejection it is necessary that the master line SS21 and the address line ASIl each a master signal SS2 with a lower voltage and an address signal ASL are supplied with a lower pulse width simultaneously, it being to ensure that the Address pulse within the larger time window of the associated root pulse of the master signal SS2 is applied to the field effect transistor FTl.
  • FIG. 3 shows the time assignment of master pulse SI and address pulse AI, based on the same time base t.
  • the pulse amplitudes are here at 8VoIt (SS2) and 12VoIt (ASl).

Landscapes

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

Abstract

The invention relates to a printing system for controlling the printing head of a conventional printing cartridge designed for water-based printing ink. Said printing head comprises ink discharging elements arranged in a matrix, and the actuatable heating element of an ink discharging element is activated by means of an address signal operating as a line signal and by means of a starting signal operating as a column signal. The starting pulses of the starting signal (SS2) have a lower signal amplitude than the address pulses of the address signal (ASl) and the printing ink in the printing cartridge (5) has a high alcohol content.

Description

Beschreibung description
Drucksystem zur Ansteuerung des Druckkopfes einer DruckerpatronePrinting system for controlling the print head of a printer cartridge
Die Erfindung betrifft ein Drucksystem zur Ansteuerung des Druckkopfes einer Druckerpatrone gemäß Oberbegriff des Anspruchs 1.The invention relates to a printing system for controlling the print head of a printer cartridge 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 ein Tintenstrahl-Drucksystem 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.US 5,946,012 A discloses an ink jet printing system for printer cartridges in which the ink ejection elements arranged in a matrix are driven by means of 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, ein Drucksystem 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 system 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 erfindungsgemäß 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 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. Thus, according to the invention, a division of the address signals and of the master signals is provided, so that the control 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 derIt is advantageous in this context if the signal amplitude of the
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.Root 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 das erfϊndungsgemäße Drucksystem 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 system according to the invention may 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 erfϊndungsgemäßen 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 printer ink for use in a printer cartridge of the inventive printing system has an alcohol volume fraction of over 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 Ausfuhrungsbeispiels näher erläutert.The invention will be explained in more detail with reference to an exemplary embodiment shown in the drawing.
Es zeigen:Show it:
Figur 1 das Drucksystem in Form eines Blockdiagramms,FIG. 1 shows the printing system in the form of a block diagram;
Figur 2 einen Ausschnitt aus einer Matrixanordnung der den Druckkopf bildenden Tintenausstoßelemente undFigure 2 is a detail of a matrix arrangement of the printhead forming ink ejection elements and
Figur 3 eine Darstellung der Adressimpulse und der Stammimpulse.3 shows a representation of the address pulses and the master pulses.
Dem in Figur 1 dargestellten Drucksystem 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 SRI 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 Stanimimpulse, 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 ASl. 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 ASl 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 ASl 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 printing system shown in Figure 1 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 SRI and SR2 now output the appropriate signal patterns on the output side, which 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 Stanimimpulse, which is 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 Gl 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 ASI l bis AS 13 Adresssignale ASl einzeln zugeführt werden können. Um beispielsweise das oben links dargestellte Heizelement Rl für einen Tintenausstoß anzusteuern, ist es erforderlich, dass der Stammleitung SS21 und der Adressleitung ASIl jeweils ein Stammsignal SS2 mit geringerer Spannung und ein Adresssignal ASl 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 FTl anliegt.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 respectively assigned field effect transistors FT. In this case, a common reference potential - DC voltage or ground potential - be applied to the lines Gl 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 comprise 300 heating elements, the trunk lines SS21 to SS23 trunk signals SS2 can be supplied separately, while according to the address lines ASI l to AS 13 address signals ASl can be supplied individually. To control, for example, the heating element Rl shown above for ink ejection, it is necessary that the master line SS21 and the address line ASIl each a master signal SS2 with a lower voltage and an address signal ASL are supplied with a lower pulse width simultaneously, it being to ensure that the Address pulse within the larger time window of the associated root pulse of the master signal SS2 is applied to the field effect transistor FTl.
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 8VoIt (SS2) und 12VoIt (ASl). FIG. 3 shows the time assignment of master pulse SI and address pulse AI, based on the same time base t. The pulse amplitudes are here at 8VoIt (SS2) and 12VoIt (ASl).

Claims

- -Patentansprüche - Patent claims
1. Drucksystem zur Ansteuerung des Druckkopfes einer herkömmlichen1. Printing system for controlling the printhead of a conventional
Druckerpatrone (5), die an sich für Druckertinte auf Wasserbasis bestimmt ist, deren Druckkopf in einer Matrix angeordnete Tintenausstoßelemente hat, wobei das jeweils zu betätigende Heizelement eines Tintenausstoßelements mittels eines als Zeüensignal fungierenden Adresssignals und mittels eines als Spaltensignal fungierenden Stammsignals aktiviert wird, dadurch gekennzeichnet, dass die Stammimpulse des Stammsignals (SS2) eine geringere Signalamplitude haben als die Adressimpulse des Adresssignals (ASl), und dass die Druckertinte in der Druckerpatrone (5) einen hohen Alkoholanteil hat.A printer cartridge (5), which is intended for use with water-based printer ink, the print head of which is arranged in a matrix ink ejection elements, wherein the respective actuatable heating element of an ink ejection element is activated by means of an address signal acting as a Zeusensignal and by means of acting as a column signal master signal, characterized in that the master pulses of the master signal (SS2) have a lower signal amplitude than the address pulses of the address signal (AS1) and that the printer ink in the printer cartridge (5) has a high alcohol content.
2. Drucksystem nach Anspruch 1, dadurch gekennzeichnet, dass die Adressimpulse des Adresssignals (ASl) eine geringere Impulsbreite haben als die Stammimpulse des Stammsignals (SS2).2. Printing system according to claim 1, characterized in that the address pulses of the address signal (ASl) have a smaller pulse width than the master pulses of the master signal (SS2).
3. Drucksystem nach Anspruch 1, dadurch gekennzeichnet, dass die3. Printing system according to claim 1, characterized in that the
Stammimpulse des Stammsignals (SS2) eine geringere Impulsbreite haben als die Adressimpulse des Adresssignals (ASl).Root pulses of the master signal (SS2) have a smaller pulse width than the address pulses of the address signal (ASl).
4. Drucksystem nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Adressimpulse des Adresssignals (ASl) eine Impulsbreite im Bereich zwischen 1700ns und 2100ns haben, wobei die Stammimpulse des Stammsignals (SS2) eine Impulsbreite von etwa 2800ns haben. 4. Printing system according to one of claims 1 or 2, characterized in that the address pulses of the address signal (ASl) have a pulse width in the range between 1700ns and 2100ns, wherein the master pulses of the master signal (SS2) have a pulse width of about 2800ns.
5. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Signalamplitude der Stammimpulse im Bereich zwischen 6 Volt und 9 Volt liegt.5. Printing system according to one of the preceding claims, characterized in that the signal amplitude of the stem pulses is in the range between 6 volts and 9 volts.
6. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Signalamplitude des Adresssignals (ASl) etwa 126. Printing system according to one of the preceding claims, characterized in that the signal amplitude of the address signal (ASl) is about 12
Volt beträgt.Volt is.
7. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Impulsbreite und/oder Signalamplitude der Stammimpulse und/oder der Adressimpulse individuell einstellbar sind.7. Printing system according to one of the preceding claims, characterized in that the pulse width and / or signal amplitude of the master pulses and / or the address pulses are individually adjustable.
8. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Adresssignale (ASl) einerseits und die Stammsignale (SS2) andererseits mittels separaten, geregelten Versorgungsspannungen erzeugt werden.8. Printing system according to one of the preceding claims, characterized in that address signals (ASl) on the one hand and the master signals (SS2) on the other hand are generated by means of separate, regulated supply voltages.
9. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Drucksystem eine Anpassungsschnittstelle zwischen einer herkömmlichen Druckkopfsteuerung und den zugehörigen herkömmlichen Druckerpatronen (5) mit integrierten Druckköpfen darstellt und9. A printing system according to any one of the preceding claims, characterized in that the printing system is an adaptation interface between a conventional printhead controller and the associated conventional printer cartridges (5) with integrated printheads and
Signalregler (SRI, SR2) zur Veränderung der Stammimpulse und/oder Adressimpulse enthält.Signal controller (SRI, SR2) for changing the master pulses and / or contains address pulses.
10. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Druckertinte einen Alkoholvolumenanteil von über10. Printing system according to one of the preceding claims, characterized in that the printer ink an alcohol volume fraction of about
70 % hat.70% has.
11. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Alkoholbasis der Druckertinte aus einer, zwei oder mehreren unterschiedlichen Alkoholarten besteht. 11. Printing system according to one of the preceding claims, characterized in that the alcohol base of the printer ink consists of one, two or more different types of alcohol.
12. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Druckertinte ein oder mehrer Additive beigefügt sind, welche die Verwendung der Druckertinte in einer herkömmlichen Druckerpatrone ermöglichen und/oder die Eigenschaften z.B. bezüglich Untergrundbenetzung, Haftung, Eintrocknungsverhalten der Tinte verbessern.A printing system according to any one of the preceding claims, characterized in that the printing ink is accompanied by one or more additives enabling the use of the printing ink in a conventional printer cartridge and / or the properties of e.g. with respect to background wetting, adhesion, drying behavior of the ink.
13. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Druckertinte auf Alkoholbasis Farbstoff oder Pigment und Bindemittel enthält.13. Printing system according to one of the preceding claims, characterized in that the printer ink contains alcohol-based dye or pigment and binder.
14. Drucksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Druckertinte Ethanol als Alkohol enthält. 14. Printing system according to one of the preceding claims, characterized in that the printer ink contains ethanol as 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)

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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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EP1910087A1 true EP1910087A1 (en) 2008-04-16
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JP (1) JP4987863B2 (en)
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US8142559B2 (en) 2008-03-31 2012-03-27 Casey Robertson Thermal ink jet ink composition
US8142558B2 (en) 2008-03-31 2012-03-27 Videojet Technologies Inc. Thermal ink jet ink composition
WO2011011359A1 (en) 2009-07-20 2011-01-27 Markem-Imaje Corporation Solvent-based inkjet ink formulations
CN102574153B (en) 2009-09-30 2015-02-18 录象射流技术公司 Thermal ink jet ink composition
WO2011041368A1 (en) 2009-09-30 2011-04-07 Videojet Technologies Inc. Thermal ink jet ink composition

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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
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ATE471821T1 (en) 2010-07-15
PT1910087E (en) 2010-09-24
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US7794033B2 (en) 2010-09-14
US20080198190A1 (en) 2008-08-21

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