EP1234670B1 - Druckkopf und Drucker mit verbesserten Ablenkelektroden - Google Patents

Druckkopf und Drucker mit verbesserten Ablenkelektroden Download PDF

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Publication number
EP1234670B1
EP1234670B1 EP02290450A EP02290450A EP1234670B1 EP 1234670 B1 EP1234670 B1 EP 1234670B1 EP 02290450 A EP02290450 A EP 02290450A EP 02290450 A EP02290450 A EP 02290450A EP 1234670 B1 EP1234670 B1 EP 1234670B1
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Prior art keywords
drops
electrode
electrodes
jet
printing head
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EP02290450A
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English (en)
French (fr)
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EP1234670A3 (de
EP1234670A2 (de
Inventor
Paul Bayeux
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Markem Imaje SAS
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Imaje SA
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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
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/075—Ink jet characterised by jet control for many-valued deflection
    • B41J2/08—Ink jet characterised by jet control for many-valued deflection charge-control type
    • B41J2/09—Deflection means

Definitions

  • the present invention is in the field of printer printheads. It relates more particularly to improving electrostatic deflection electrodes of electrically charged ink drops. It also relates to an inkjet printer equipped with this improved head.
  • Inkjet printers are classified into two major technological families, the first consisting of "drop-on-demand” printers and a second consisting of continuous jet printers:
  • Drop-on-demand printers are basically desktop printers, designed to print text and graphic patterns in black or color.
  • the "drop-on-demand" printers generate directly and only the ink drops actually needed to print the desired patterns.
  • the printhead of these printers has a plurality of ink ejection nozzles, usually aligned along a nozzle alignment axis and each addressing a single point of the media. printing. When the ejection nozzles are sufficient, the printing is obtained by simply moving the print medium under the head, perpendicular to the axis of alignment of the nozzles. Otherwise, additional scanning of the media relative to the print head is required.
  • Continuous ink jet printers are generally used for industrial marking and coding applications.
  • the typical operation of a continuous jet printer can be described as follows. Electrically conductive ink maintained under pressure escapes from a calibrated nozzle thus forming an ink jet. Under the action of a periodic stimulation device, the ink jet thus formed breaks at regular time intervals at a single point in space. This forced fragmentation of the ink jet is usually induced at a so-called jet breaking point by the periodic vibrations of a piezoelectric crystal, placed in the ink upstream of the nozzle. From the breaking point, the continuous jet is transformed into a train of identical and regularly spaced ink drops.
  • a first group of electrodes called “charging electrodes” whose function is to transfer, selectively and at each drop of the drop train, a predetermined amount of electric charge.
  • the set of drops of the jet then passes through a second electrode arrangement called “deflection electrodes” forming an electric field that will change the trajectory of the charged drops.
  • the amount of charge transferred to the drops of the jet is variable and each drop records a deflection proportional to the electrical charge which has previously been attributed to it.
  • the point of the print medium reached by a drop is a function of this electric charge.
  • the non-deflated drops are collected by a gutter and recycled to an ink circuit.
  • a second variant of continuous stream jet printers known as continuous binary jet differs mainly from the previous in that a single level of deflection of the drops is created.
  • the printing of characters or patterns therefore requires the use of multi-bus print heads.
  • the nozzle spacing coincides with that of the impacts on the print media. It should be noted that in general the drops intended for printing are non-deflected drops.
  • Binary continuous jet printers are for high-speed printing applications such as addressing or customizing documents.
  • the continuous jet technique requires pressurization of the ink, thus allowing a printing distance, ie the distance between the underside of the print head and the print medium, up to 20 mm, which is ten to twenty times the print distances of drop-on-demand printers.
  • the first so-called equipotential deflection technique is the oldest. It consists in using two metal electrodes having surfaces facing one another - said active surfaces -. The train of drops passes through the space between the active surfaces. Each of the active surfaces facing the jet is brought to a constant and uniform electrical potential. Two embodiments are particularly used.
  • the first mode is illustrated on the figure 1 .
  • a printer has a reservoir 111 containing electrically conductive ink 110 which is dispensed through a distribution channel 113 to a drop generator 116.
  • the drop generator 116 forms from the pressurized ink contained in the distribution channel 113 an ink jet and splits the jet into a drop train .
  • These drops are electrically selectively charged by means of a charging electrode 120 fed by a voltage generator 121.
  • the charged drops pass through a space between two deflection electrodes 2, 3. According to their charge, they are more or less deviated.
  • the least or no deviated drops are directed towards a recuperator or an ink channel 6 while the other deviated drops are directed towards a substrate 27 carried locally by a support 13.
  • the successive drops of a burst reaching the substrate 27 may thus be deflected to an extreme low position, an extreme high position and successive intermediate positions.
  • the set of drops of the burst forms a line of width ⁇ x perpendicular to a Y direction of relative advance of the print head and the substrate.
  • the print head is formed by the ink jet drop generation and splitting means 116, the charging electrode 120, the deflection electrodes 2, 3, and the gutter 6. This head is generally enclosed. in a cowling not shown.
  • the time elapsed between the first and the last drop of a salvo is very short. As a result, despite continuous movement between the print head and the substrate, it can be considered that the substrate has not moved relative to the print head during the time of a burst.
  • the bursts are fired at intervals regular space.
  • the combination of the relative movement of the head and the substrate, and the selection of the drops of each burst which are directed towards the substrate makes it possible to print any pattern such as that represented at 28 on the figure 1 .
  • only the deflection electrodes of the drops of the train 1 of drops formed from the jet of ink leaving the nozzle are of interest.
  • the second deflection technique differs from the previous in that at least a portion of at least one of the two active surfaces forms a non-zero angle with the axis of the inkjet 1.
  • the geometry is among the most common and retains a great simplicity.
  • the plates are parallel and spaced a distance generally less than that adopted in the first embodiment.
  • the electric field prevailing in this upstream part between the two plates 2, 3 then reaches a value at least equal to that of the first mode but for a lower potential difference.
  • the solution adopted consists in inclining with respect to the axis of the jet a downstream portion 16 of this electrode 3. It is clear that in the downstream region, the value of the electric field undergoes a very large fall, is no longer optimal. which leads to a serious degradation of the deflection efficiency. Consequently.
  • the main advantage of the second variant over the first is to provide substantially equivalent performance for a lower potential difference.
  • the request for patent FR 77 33131 proposes a variant, illustrated figure 3 , in which the active surface, towards which the deflection of drops, has a double longitudinal and transverse curvature.
  • the convexity resulting from the adoption of these curvatures eliminates any sharp metal edge and thus minimize the risk of electrical breakdown.
  • the longitudinal curvature of the active face 17 of the electrode 3 also provides an improved transition between the upstream region 15 with a high electric field and the downstream region 16 with a low electric field.
  • a curved face 19 of this part is placed facing the jet 1 and constitutes the active surface of the deflection device on which the electric potential is not uniform.
  • the permitivity of the dielectric material being known - and greater than that of air - it is proposed in the document to adjust the curvature of the part 18 so as to simultaneously follow the trajectory of the most loaded drops and obtain a value Ed optimum at any point between the two active surfaces of the device.
  • the second design presented in the GB Patent 2,249,995-A recommends the use of a resistive material to form the active face of one of the two electrodes of the deflection device. It is proposed to obtain, by judiciously feeding this electrode at its two ends, a variation of the electric potential along its active surface. This non-uniformity must then generate a deflection field Ed such that its value is approximately optimal in each of the points between the two active surfaces of the device. This solution is criticized in said GB Patent 2,249,995 A highlighting the high current consumption - and therefore the significant heat generation - that would be induced by its implementation.
  • US 4338613 A shows an equipotential device in which a print head of a continuous inkjet printer is equipped with means for generating an ink jet.
  • the FR 97 06799 contains a detailed analysis and critique of previous proposals.
  • This document focuses essentially on describing a non-equipotential device free from the operating difficulties described above.
  • at least one of the two active surfaces is in the form of an insulating substrate on which is deposited, according to the height of this surface, a plurality of electrodes connected to different voltage sources.
  • a resistive coating covers the insulating substrate and the electrodes.
  • the object of the present invention is to provide an electrostatic deflection device which can be integrated in a print head of an ink jet printer, and whose efficiency equals or surpasses that of non-equipotential designs for a significantly lower cost and this by means of a deflection electrode arrangement whose active surfaces are brought to uniform electrical potentials.
  • Another object of the present invention is to provide an arrangement of deflection electrodes of reduced size and leading to a reduction in the size of a print head of a printer in which this head is incorporated.
  • Another object of the present invention is to obtain the deflection performance with a significantly reduced voltage compared to the usual equipotential deflection electrode supply voltages and thus to facilitate integration into a print head of said electrodes and a generator of said reduced voltage.
  • Yet another object of the invention is to significantly reduce the risk of accidental spraying of ink on the active surface of the deflection electrodes.
  • the invention relates to a print head of a continuous ink jet printer equipped with means for generating an ink jet along an axis of the ink jet, from at least a nozzle for ejecting the jet, and for splitting the jet into a stream of drops, means for selectively electrically charging the different drops of the drop train, and deflection electrodes of the charged drops, deviating the drops according to the value of the received charge, either to a droplet collection trough, or to a printing substrate supported locally by a substrate of the printing substrate, the deflection electrodes each having with respect to the ejection nozzle of the jet an upstream portion, and a downstream portion, an active surface of each deflection electrode being a surface of said electrode which is opposite the train of drops, print head characterized in that the deflection electrodes of droplets of the jet comprise two electrodes a first and a second, the active surface of the first electrode having a first concave longitudinal curvature whose local radius of longitudinal curvature is located in a plane
  • the function of the recess is to allow the passage of undirected or little deviated drops through the first electrode.
  • the undirected drops substantially follow a trajectory, which in first approximation can be considered straight.
  • the most upstream portion of the contour of the recess will be located in the immediate vicinity and slightly upstream of the point of intersection of the first electrode with the axis of the jet.
  • the most upstream part of the contour of the recess must therefore be located at a sufficient distance from the point of intersection of the first electrode with the axis of the jet so that an undirected drop can pass through the recess of the recess. the electrode with a near zero probability of intercepting the electrode.
  • the lightly charged and therefore slightly deviated drops have a trajectory whose curvature may be less than that of the first electrode.
  • the trajectory of the slightly deviated drops is therefore likely to be secant to the active surface of the first electrode.
  • the recess must be such that it allows the passage of these little deviated drops.
  • the possible intersection point of the trajectory of a little deflected drop and the surface of the electrode before recess is necessarily downstream of the point which has been defined above as the most upstream of the recess. We can therefore consider that the downstream part of the first electrode is a part of this electrode located downstream of the point of intersection of the electrode and the axis of the jets.
  • the shape of this recess is to have as line of symmetry a line defined by the intersection of the electrode before recess, with a plane containing the axis of the jets and the direction of deviation of the drops.
  • the recess will have an oblong shape centered on the line of symmetry defined above.
  • the width of the recess results from a compromise between two requirements, let the drops through the first electrode without risk of collision between the drop and the electrode, which requires that the recess is wide, do not decrease too much inter electrode field, which requires that the recess is narrow.
  • the diameter of the ink drops is of the order of several tens of microns, typically between 30 and 140 microns, for example 100 microns.
  • the width measured perpendicular to this line is greater than the diameter of the drops and ideally of the order of two to three times the diameter of the drops, typically 200 to 300 ⁇ m. However, to be sure to avoid collisions between drops and first electrode, it may be necessary to set a width of the order of 8 to 10 times the diameter of the drops.
  • embodiments of the invention may together or separately exhibit the following features.
  • the curvature of the second electrode is such that the active surface of this second electrode is substantially parallel to that of the first electrode so that the two active surfaces have a substantially constant spacing e between them.
  • the outline of the recess has an upstream point located in the vicinity of the intersection, before obviously, the first electrode with the axis of the ink jet.
  • the recess has a symmetry with respect to a plane containing the axis of the ink jet.
  • the recess has a width of between two and ten times the diameter of the ink drops.
  • the recess has the shape of an oblong slot whose opening opens on the most downstream part of the first electrode.
  • the spacing between the active surfaces of the two electrodes is substantially constant from the upstream to the downstream of the electrodes and between 4 and 20 times the diameter of the ink drops is approximately between 0.5 and 3 mm.
  • a downstream edge of the first electrode is closer to the print medium than a downstream surface of the recovery gutter.
  • the second electrode is provided, from its active surface, with a groove drawn along an axis contained in a plane containing the axis of the jet.
  • a bottom of the groove is connected to the active surface of the second electrode by a transversely curved surface with radii of curvature greater than the radius of the drops of ink.
  • Languages of the first electrode formed on either side of the recess and the second electrode are transversely curved along radii of curvature of greater value than the radius of the ink drops.
  • the figure 7 comprises parts A, B, C, and D.
  • Part A is a perspective view, seen from the side, of a set of two electrodes according to the invention.
  • Part B represents a section of the two electrodes along line BB of part A.
  • Part C is a perspective view of a split electrode according to the invention.
  • Part D represents a perspective view of the convex electrode for revealing a surface indentation.
  • the figures 5 are respectively a schematic view of the front and left illustrating a particular embodiment of electrostatic deflection electrodes according to the invention, implemented within a single-pass deflected continuous jet jet print head.
  • the figures 6 , parts A and B are respectively cuts made at the Z axis of the figure 5 , part A, for two embodiments. These figures are intended to explain the invention and its operation.
  • the figure 7 is it intended to show, more realistically, the shape of the electrodes in a particular embodiment. Are not represented on Figures 5 - 7 that the elements relating to the electrodes subject of the invention.
  • the other components of the print head are known to those skilled in the art and their description as illustrated in connection with the prior art, for example in relation to the figure 1 is sufficient for a good understanding of the invention.
  • a train of selectively charged drops 1 enters the space delimited by electrodes 2 and 3 between which there is a potential difference Vd supplied by a voltage generator 30.
  • the electrodes 2 and 3 are of substantially equal heights.
  • a plane tangent to the electrodes 2 and 3 respectively in their most upstream part is parallel to the axis of the jets or secants to this axis at a low angle.
  • the active surface 11 of the first electrode 2 has a concave longitudinal curvature substantially opposite that of the active surface 10 of the second electrode 3.
  • An active surface 10 of the electrode 3 has a convex longitudinal curvature such that this surface is in a downstream part, substantially parallel to a trajectory 4, shown in dashed lines, the most deviated drops. In a known manner, a trajectory can be visualized by stroboscopic illumination of the drops.
  • the spacing e is substantially constant over the entire height of the electrodes 2, 3.
  • the value of the spacing e is less than 3.5 mm, preferably less than 2 mm.
  • a recess 12 which in the example shown, has the shape of a slit 12 apparent in part B of the figure 5 and B and C of the figure 7 , is practiced in the downstream part of the electrode 2.
  • the width of the recess 12 is greater than the diameter of the ink drops. In practice, the width of the recess 12 is advantageously limited so that the drop in the Ed field value existing in the downstream part of the electrodes 2, 3 does not exceed 15% of that of the optimal field created in its part. upstream.
  • the electrodes 2 and 3 are preferably made of a stainless metal.
  • the longitudinal curvature of the electrodes is preferably constant, so that the active surfaces of the electrodes 2, 3 are formed substantially by cylindrical surface portions having an axis perpendicular to the axis of the jet.
  • the operation is as follows.
  • the electric field Ed arising from the potential difference Vd deviates the ink drops in proportion to their electric charge along predefined trajectories.
  • the trajectory 4 is that followed by the drops carrying the maximum load Qmax. It is therefore the trajectory of the most deviated drops.
  • the active surface of the second electrode 3 is calculated so that the probability of meeting the trajectory 4 with the second electrode is almost zero, although the trajectory 4 is parallel and close to the active surface of the second electrode 3 at least in a downstream part of this surface.
  • the trajectory 5 is that traveled by the drops with the minimum load Qmin to avoid the recovery gutter 6 and thus be directed to the printing substrate. Drops bearing electrical charges between the values Qmax and Qmin follow intermediate paths such as, for example, the trajectories 7 or 8.
  • the trajectory 9 corresponds to that of drops with a charge quantity less than Qmin: such drops are captured by the recovery gutter 6 and recycled to an ink circuit of the printer.
  • the slot 12 shown figure 5 part B and figure 7 part B and C is as explained above such that the least deviated drops and especially those whose load is less than Qmin pass through this slot.
  • the upstream portion 39 of the contour 38 of this slot 12 is located at a location close to the point of intersection of the axis of the jet with the first electrode 2. Because the drops whose charge is less than Qmin and the least charged drops among those whose charge is between Qmin and Qmax pass through the slot 12 of the electrode 2, the dispersion of the drops may be retained despite a spacing e between the electrodes 2 and 3 reduced compared with the electrodes of the prior art.
  • the weakness of the spacing e allows the use of a value of Vd of the order of 3 kV instead of the 8 to 10 kV usually used in equipotential electrode devices of the prior art. It is then particularly advantageous to realize the potential difference Vd by bringing the electrode 2 to the reference potential of the ink, usually the mass potential of the printer. Under these conditions, unlike the prior art or this potential is a potential opposite to that of the electrode 3, with respect to the potential of the ink, it becomes possible to bring or even integrate the recovery gutter 6 and the electrode 2 without risk of electrical breakdown between these two elements and without altering the Ed field between the two electrodes.
  • the distance d1 between the lower edge 21 of the gutter 6 and the printing medium 13 may become greater than the distance d2 separating the downstream end 22 of the electrode 2 from this same printing medium 13.
  • Parts A and B of the figure 6 and part D of the figure 7 each illustrate an advantageous embodiment of the electrodes 2 and 3.
  • Each of these modes is illustrated figure 6 by an enlarged scale cut taken approximately along the z plane defined on the figure 5 part A.
  • the shape of these curves can characterize, over their entire height or at least in a downstream part, the active faces 10 and 11.
  • transverse curvatures illustrated on the figure 6 Part A is to eliminate any edge or sharp metallic roughness likely to generate an electric discharge phenomenon that can lead to a weakening of the Ed field or electrical breakdown.
  • the transverse radius of curvature of the surface 11 of the tongues 24, 25 and of the electrode 3 is in every point greater than that of the ink drops.
  • the figure 6 part B has an electrode 2 having the same transverse curvature characteristics as the electrode 2 shown in part A.
  • the active surface 10 of the electrode 3 is also provided with a transverse curvature having the same capabilities as the electrode 3 shown in part A, to reduce the occurrence of electric discharges.
  • the electrode 3 furthermore has an indentation or longitudinal groove 14. This indentation may extend over the entire height of the surface 10 or on a downstream part only as illustrated. figure 7 parts A and D.
  • the indentation 14 is transversely opposite the recess 12 of the electrode 2.
  • the width of the indentation 14 is greater than the diameter of the ink drops but remains thin enough not to distance significantly the Ed field of its optimal value.
  • Vd the low value of Vd and the high positioning of the gutter 6 recovery allow a clear reduction in the size of the print head and the path taken by the ink drops.
  • the parasitic variations of droplet trajectories are of low amplitude, and the print quality is better.

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

Claims (11)

  1. Druckkopf eines kontinuierlichen Tintenstrahldruckers, ausgestattet mit Mitteln (116), um einen Tintenstrahl entlang einer Achse des Tintenstrahls von mindestens einer Tintenstrahlejektordüse zu erzeugen und den Strahl zu einer Abfolge von Tropfen zu zerteilen, Mitteln (120, 121), um die verschiedenen Tropfen der Abfolge von Tropfen selektiv elektrisch zu laden und Elektroden (2, 3) zum Ablenken der geladenen Tropfen, wobei die Tropfen entsprechend der aufgenommenen Ladung entweder in Richtung eines Aufnahmemittels (6) zur Rückgewinnung der Tropfen, oder in Richtung eines Drucksubstrats (27), das lokal durch den Träger (13) des Drucksubstrats (27) gehalten wird, abgelenkt werden, wobei die Ablenkelektroden (2, 3) in Bezug auf die Strahlejecktordüse einen stromaufwärts gelegenen Teil (15) und einen stromabwärts gelegenen Teil (16) aufweisen, wobei eine aktive Oberfläche (11, 10) jeder Ablenkelektrode (2, 3) eine Oberfläche der Elektrode (2,3) darstellt, die sich in der Bahn der Tropfen befindet,
    dadurch charakterisiert, dass die Ablenkelektroden (2, 3) der Tropfen des Strahls zwei Elektroden (2, 3) eine erste (2) und eine zweite (3) aufweisen, wobei die aktive Oberfläche (11) der ersten Elektrode (2) eine erste longitudinale konkave Krümmung aufweist, wobei sich der örtliche Radius der longitudinalen Krümmung in einer Ebene, gebildet durch die Achse des Tintenstrahls und einer Abweichungsrichtung der Tropfen, befindet, dass die aktive Oberfläche (10) der zweiten Elektrode (3) eine erste longitudinale konvexe Krümmung aufweist, und dass die erste Elektrode in ihrem stromabwärtigen Teil (16) eine Aussparung (12) mit einer Kontur (38) aufweist.
  2. Druckkopf nach Anspruch 1, dadurch gekennzeichnet, dass die Kontur (38) einen Punkt aufweist, der am weitesten stromaufwärts gelegen ist, benachbart zum Schnittpunkt vor der Aussparung der ersten Elektrode (2) mit der Achse des Tintenstrahls.
  3. Druckkopf nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Aussparung (12) eine Symmetrie in Bezug auf eine Ebene, enthaltend die Achse des Tintenstrahls aufweist.
  4. Druckkopf nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Aussparung (12) eine Größe zwischen 4 und 20mal dem Durchmesser der Tintentropfen aufweist.
  5. Druckkopf nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Aussparung (12) die Form eines länglichen Schlitzes aufweist, dessen Öffnung in dem Teil (22) mündet, der sich am weitesten stromabwärts von der ersten Elektrode (2) befindet.
  6. Druckkopf nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Raum zwischen den aktiven Oberflächen (10, 11) der zwei Elektroden (3, 2) vom stromaufwärtigen zum stromabwärtigen Bereich der Elektroden im Wesentlichen konstant ist und zwischen 4 und 20mal dem Durchmesser der Tintentropfen beträgt.
  7. Druckkopf nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die oberste Kante (22) der ersten Elektrode (3) näher zum Druckträger (13) liegt als die oberste Oberfläche (21) der Rückgewinnungsaufnahmemittel (6).
  8. Druckkopf nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die zweite Elektrode (3) eine Nut (14) entlang einer Achse aufweist, die eine Ebene enthält, die die Strahlachse umfasst.
  9. Druckkopf nach Anspruch 8, dadurch gekennzeichnet, dass der Boden der Nut (14) mit der aktiven Oberfläche (10) der zweiten Elektrode (3) durch eine transversal gekrümmte Oberfläche mit einem Krümmungsradius mit einem größeren Wert als dem Radius der Tintentropfen verbunden ist.
  10. Druckkopf nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Zungen (24, 25) der ersten Elektrode, die beidseits der Aussparung (12) gebildet sind, und die zweite Elektrode (3) transversal gekrümmt sind mit Krümmungsradien, deren Werte größer sind als der Radius der Tintentropfen.
  11. Drucker, dadurch gekennzeichnet, dass er mit einem Druckkopf nach einem der vorangehenden Ansprüche ausgestattet ist.
EP02290450A 2001-02-27 2002-02-25 Druckkopf und Drucker mit verbesserten Ablenkelektroden Expired - Lifetime EP1234670B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0102638A FR2821291B1 (fr) 2001-02-27 2001-02-27 Tete d'impression et imprimante a electrodes de deflexion ameliorees
FR0102638 2001-02-27

Publications (3)

Publication Number Publication Date
EP1234670A2 EP1234670A2 (de) 2002-08-28
EP1234670A3 EP1234670A3 (de) 2007-03-07
EP1234670B1 true EP1234670B1 (de) 2008-07-09

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US (1) US6758555B2 (de)
EP (1) EP1234670B1 (de)
JP (1) JP2002264339A (de)
CN (1) CN1157290C (de)
DE (1) DE60227436D1 (de)
ES (1) ES2310200T3 (de)
FR (1) FR2821291B1 (de)

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FR2892052B1 (fr) * 2005-10-13 2011-08-19 Imaje Sa Impression par deflexion differentielle de jet d'encre
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DE60227436D1 (de) 2008-08-21
JP2002264339A (ja) 2002-09-18
CN1365892A (zh) 2002-08-28
US20020118258A1 (en) 2002-08-29
EP1234670A3 (de) 2007-03-07
FR2821291A1 (fr) 2002-08-30
FR2821291B1 (fr) 2003-04-25
ES2310200T3 (es) 2009-01-01
EP1234670A2 (de) 2002-08-28
US6758555B2 (en) 2004-07-06
CN1157290C (zh) 2004-07-14

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