• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A liquid composition, such as an ink composition, liquid at room temperature, comprising a solvent, said liquid composition being a liquid composition specifically for printing by a binary deviated continuous jet printing technique in which said composition of liquid form during the printing of the drops which are not charged by an electric field, which each have a zero electric charge, which each form a dipole under the effect of an electric field, and which are then deflected by said electric field, characterized in that said liquid composition has at least one characteristic selected from the following characteristics: a) a conductivity at 20 ° C greater than or equal to 5 μS / cm, preferably a conductivity at 20 ° C of 5 at 500 μS / cm, more preferably a conductivity at 20 ° C of 5 to 500 μS / cm, the value 500 μS / cm being excluded, better a conductivity at 20 ° C. from 5 to 400 μS / cm, more preferably a conductivity at 20 ° C of 30 to 400 μS / cm, for example 30 to 200 μS / cm; b) a dynamic viscosity at 20 ° C of 1 to 25 cPs, preferably 6 to 25 cPs; c) a density of 0.8 to 2.5 g / cm3, preferably 1.2 to 2.5 g / cm3. Use of this liquid composition in a printer or print head implementing said printing technique. A process for treating and / or marking a substrate by projection on said substrate of said liquid composition by said printing technique. Substrate, provided with a marking or treatment obtained by drying and / or absorption of said liquid composition.
    公开号:FR3025801A1
    申请号:FR1458747
    申请日:2014-09-16
    公开日:2016-03-18
    发明作者:Bruno Barbet；Jean-Francois Desse；Saint-Romain Pierre De；Daniel Esteoulle；Philippe Tenaud
    申请人:Dover Europe SARL；
    IPC主号:
    专利说明:

    [0001] LIQUID COMPOSITION, PARTICULARLY INK, FOR BINARY CONTINUOUS JET PRINTING WITH UNLATCHED DROPS, USE OF THE SAME, MARKING METHOD, AND BRANDED SUBSTRATE.
    [0002] TECHNICAL FIELD The invention relates to a liquid composition, such as an ink composition, for the treatment and / or marking of support substrates and objects of all kinds, the properties of which are specifically adapted to the treatment, and / or marking or printing, by the technique of continuous flow jet printing binary, with uncharged drops, a wide variety of media, substrates and objects. More precisely, this technique of binary deviated continuous jet printing is a technique in which the liquid composition forms during the printing of the drops which are not charged by an electric field, which each have a zero electric charge, which form each a dipole under the effect of an electric field, and which are then deflected by said electric field. For convenience, this printing technique will be referred to in the following technical "SPI". The invention also relates to the use of this liquid composition, such as an ink composition, according to the invention, in a printer or printhead employing the technique of liquid jet printing, in particular The invention furthermore relates to a process for the treatment and / or marking of a substrate, support, or object by projection on said substrate, support or object, of said liquid composition. such as an ink composition by the technique of liquid jet printing, so-called "SPI" technique. The invention finally relates to a substrate, support or object provided with a marking or treatment obtained by drying and / or absorption of the liquid composition such as an ink composition according to the invention.
    [0003] The technical field of the invention is, in general, that of liquid jet printing in particular by ink jet.
    [0004] PRIOR ART Inkjet printing is a well-known technique which allows the printing, marking, or decoration of all kinds of objects, at high speed, and without contact of these objects. objects with the printing device, variable messages at will, such as barcodes, sell-by dates, etc. even on non-planar supports. Inkjet printing techniques are divided into two main types: the so-called "drop on demand" or "DOD" technique, and the so-called "continuous jet" technology. "(Continuous Ink Jet" or "CIJ" in English).
    [0005] "Jet on demand" jet projection can be made by "bubble" ink jet, by "piezoelectric" ink jet, by "valve" inkjet or finally by jet. Ink "Hot Melt" or phase change. In the case of the bubble ink jet, the ink is vaporized in the vicinity of the nozzle and this vaporization causes the ejection of the small amount of ink between the resistor which vaporizes the ink and the nozzle. In the case of the piezoelectric inkjet, a sudden change in pressure caused by an actuator set in motion by the electrical excitation of a crystal or a piezoelectric ceramic and located in the vicinity of the nozzle, causes the ejection of a drop of ink. In the case of the "Hot Melt" ink jet, the ink is solvent-free and is carried beyond its melting point. On-demand drop printing can therefore be done at room temperature, such as piezoelectric ink jet, valve ink jet or bubble ink jet, or at high temperature, for example. For example, at around 60 ° C. to 130 ° C., this is the case of the so-called "Hot Melt" (HM) or phase-change ink jet. The deflected continuous jet projection involves pressurizing the ink into a cavity containing a piezoelectric crystal, from which the ink escapes through an orifice (nozzle) in the form of a jet. The piezoelectric crystal, vibrating at a specific frequency, causes pressure disturbances in the ink jet, which oscillates and gradually breaks up into spherical droplets. An electrode, called the "charge electrode", placed on the path of the jet, where it breaks, makes it possible to give these drops an electrostatic charge, if the ink is conductive. The drops thus charged are deflected in an electric field and allow printing. The uncharged drops, therefore not deflected, are recovered in a gutter where the ink is sucked and then recycled to the ink circuit. For all types of inkjet technology, the viscosity of the inks is very low at the blast temperature, typically from 1 to 20 cps, and these technologies can therefore be referred to as low viscosity ink deposition technologies. The jet ink projection ensures high speed non-contact marking of scrolling on non-planar objects and with the possibility of changing messages at will. The jet sprayable ink compositions must meet a number of criteria inherent in this art relating, inter alia, to viscosity, solubility in a solvent for cleaning, compatibility of ingredients, correct wetting of the media to be marked, etc., and electrical conductivity in the case of the deviated continuous jet. In addition, these inks must dry quickly, be able to flow or stand still in the vicinity of the nozzle without clogging it, with great jet orientation stability while allowing easy cleaning of the print head. . The ingredients that make up the current inks, for the deviated continuous jet type ink jet, are organic or mineral products; these are dyestuffs, such as dyes or pigments, resins or binders, in one or more volatile solvent (s) or in water, optionally of one or more salts (s) ) providing conductivity, as well as various additives. The ingredients that make up the current inks for the drop-on-demand inkjet (DOD) are also organic or mineral products; dyes or pigments, resins or binders, in a more or less volatile solvent (s) or in water, in proportions other than those of continuous deviated inkjet inks, but without the need for electrical conductivity. In the case of inks for the "Hot-Melt" ink jet, the inks do not contain liquid solvents at room temperature but liquid organic products at the projection temperature already specified above, such as waxes and waxes. low molecular weight resins. These low molecular weight waxes and resins are generally selected so that the viscosity of the ink at the projection temperature is from 2 to 25 mPa · s.
    [0006] 3025801 4 Recently was developed a technique of jet printing of liquid including inkjet, which we will call for convenience in the following, and to avoid repetitions, technique "SPI" which is the abbreviation of " Super Piezo Inkjet ". This "SPI" technique is different from the so-called "drop on demand" or "DOD" technique, as well as from the "continuous jet jet" technology. or "CIJ" in English). The "SPI" technique can be defined, for simplicity, as a binary "CU" deviated continuous jet printing technique in which, unlike the continuous deviated jet printing technique where the drops projected to print each have a 10 non-zero net electric charge, the drops are not charged by an electric field, each have a zero net electric charge and each form a dipole under the effect of an electric field, and are then deflected by this field. By "binary" is meant: that there is a first trajectory of the drops for printing, and a second trajectory of the drops for recycling the ink. In this second trajectory of the drops, the drops are recovered in a gutter where the ink is sucked, then recycled to the ink circuit. that a message of N pixels in height requires a print head with N nozzles.
    [0007] It is important to note that, while in the "CU" deflected continuous jet printing technique, the deflected drops are printed, in the so-called "SPI" technique, on the contrary, the non-deflected drops are printed. . The "SPI" technique is thus widely described in the following documents [1] and [2] to which reference is made here and to the description of which reference may be made to: WO-A2-2005 / 070676 (corresponding to documents FR-A1-2 851 495 and US-B2-7,192,121) [1] describes how drops are formed in this technique by means of a print head provided with an internal simulation system. More specifically, this document relates, according to claim 1, to an inkjet printer comprising: a print head with one or more nozzles having a head body housing in particular for each nozzle; a hydraulic path ink comprising, a stimulation chamber in hydraulic communication with one of the printing nozzles emitting a jet of ink under pressure along an axis of this nozzle, - internal means for stimulating the ink jet emitted by the nozzle mechanically coupled to the ink housed in the stimulation chamber, these means acting on the jet emitted by the nozzle to break the jet in a controlled manner, and - means for recovering the ink that is not received by a printing substrate 10, an electrical control signal generator receiving a control signal and delivering stimulation signals to the stimulating means, an arrangement of charging electrodes defining around the axis of stimulation, the nozzle of the upstream and downstream zones, the downstream zone being further from the nozzle than the upstream zone, upstream and downstream electrodes of this arrangement being connected to sources of electrical potential so as to maintain in one of the zones a potential equal to that of the ink in the body of the print head, and in the other of these areas a potential different from that of the ink in the body of the print head, a deflection electrode arrangement axially located downstream of the charge electrode arrangement characterized in that the electrical control signal generator supplies to the stimulating means signals causing the controlled breaking of the jet intermittently at a upstream breaking position located in the upstream zone, to intermittently form a drop, thereby separating the jet into a droplet and a section and also causing controlled breakage of the stream or section s of the jet continuously to a downstream breaking position, the continuous jet emitted by the nozzle thus being transformed after the downstream zone into a continuous stream of electrically charged and uncharged ink drops. This document also relates, according to claim 13, to a method of printing a support by means of said printer in which an ink jet emitted by a nozzle of the printer is split to form first drops that will strike. a substrate for forming points and sections, characterized in that the jet or the sections resulting from the splitting of the jet into first drops and sections into second drops are further fractionated, the second drops resulting from this latter fraction being directed towards the gutter.
    [0008] This document finally relates, according to claim 14, to an inkjet printer head comprising: a print head with one or more nozzles having a head body (1) housing in particular for each nozzle; a hydraulic path of the ink comprising, a stimulation chamber in hydraulic communication with one of the printing nozzles emitting a jet of ink under pressure along an axis of this nozzle, - internal means for stimulating the jet of ink emitted by the nozzle mechanically coupled to the ink housed in the stimulation chamber, these means acting on the jet emitted by the nozzle to break the jet in a controlled manner, and - means for recovering the ink which does not is not received by a printing substrate; - a control electric signal generator receiving a control signal and delivering stimulation signals to the stimulating means; - an arrangement of charge electrodes defining around the axis of the nozzle upstream and downstream zones, the downstream zone being further from the nozzle than the upstream zone, upstream and downstream electrodes of this arrangement being connected to sources of electrical potential so as to maintain in one of the zones a potential equal to that of the ink in the body of the print head, and in the other of these areas a potential different from that of the ink in the body of the print head; a deflection electrode located axially downstream of the charge electrode arrangement characterized in that the electrical control signal generator supplies the stimulating means with signals causing the jet to be intermittently intermittently broken into a break position. upstream located in the upstream zone, and also causing the controlled breaking of the jet or sections of the jet continuously to a downstream breaking position, the continuous jet emitted by the nozzle thus being trans formed after the downstream zone into a continuous stream of electrically charged and uncharged ink drops.
    [0009] FR-A1-2 906 755 (corresponding to WO-A1-2008 / 040777 and US-B2-8,162,450) [2] describes how drops are sorted in this technique under the effect of a variable field. . More specifically, this document relates, according to claim 1, to a method of deflecting a liquid jet comprising forming a conductive liquid jet exiting at a predetermined velocity (y) through a nozzle of a pressure chamber along a path hydraulic system (A), the generation of an electric field (E) variable along the hydraulic path (A) by putting under potential a succession, in the direction of the hydraulic trajectory (A), of several electrodes of deflection isolated between them and forming a network 15 which extends along an electrode plane parallel to the hydraulic path (A) over a network length (L), in which the potential applied to each electrode of the network is variable and the potential applied to all the electrodes of the network is zero spatial and temporal means, 20 - the deflection of the jet by the electric field (E) by the mobilization of the charges within the jet. Improvements to the technique described in documents [1] and [2] are described in the following documents [3], [4] and [5], to which reference is made here explicitly and to the description of which reference may be made to: Document FR-A1-2 952 851 (corresponding to documents WO-A1-2011 / 061331 and US-B2-8,540,350) [3], describes how to avoid interactions between neighboring nozzles by compensating for crosstalk mechanical. More specifically, this document relates to a continuous inkjet printer 30 comprising a print head which is characterized in that it comprises means for compensating a mechanical crosstalk between adjacent chambers, these means 3025801 8 transmitting simultaneously to transmitting to a stimulated chamber, a simulation pulse, a mechanical crosstalk compensation pulse on each of the lines serving a chamber actuator adjacent to the stimulated chamber. In particular, claim 1 of this document relates to a continuous ink jet printer comprising a print head comprising: - a plurality of stimulation chambers, aligned along an axis of alignment of the chambers, - a planar diaphragm of which portions form a wall of each of the stimulation chambers, a plurality of nozzles respectively each in hydraulic communication with one of the stimulation chambers, at least one charging electrode and one deflection electrode located downstream of the nozzles a plurality of electromechanical actuators each being mechanically connected respectively to each of the diaphragm portions forming a wall of each of the stimulation chambers; a plurality of stimulation lines each intended to transmit stimulation pulses respectively to each of the different actuators, - a data processing device to be printed receiving a gate signal and uring data to be printed and delivering stimulation pulses to the stimulation lines as a function of these data, characterized in that it further comprises means for compensating for mechanical crosstalk between adjacent chambers, these means transmitting simultaneously to the transmitting to a stimulated chamber, a stimulation pulse on a stimulation line, a mechanical crosstalk compensation pulse on each of the lines serving a chamber actuator adjacent to the stimulated chamber. This document also relates, according to claim 2, to a print head of a continuous inkjet printer comprising: a plurality of stimulation chambers aligned along an axis of alignment of the chambers 3025801 9 a plane diaphragm whose parts form a wall of each of the stimulation chambers, a plurality of nozzles respectively each in hydraulic communication with one of the stimulation chambers, at least one charge electrode and a deflection electrode; located downstream of the nozzles, - a plurality of electromechanical actuators each being mechanically connected respectively to each of the diaphragm portions forming a wall of each of the stimulation chambers, a plurality of stimulation lines each intended to transmit stimulation pulses respectively to each of the different actuators, characterized in that it further comprises means for compensating a mechanical crosstalk between adjacent chambers, these means transmitting simultaneously to the transmission to a stimulated chamber, a stimulation pulse on a stimulation line, a mechanical crosstalk compensation pulse on each of the lines serving a chamber actuator adjacent to the stimulated chamber. This document finally relates, according to claim 7, to a method of reducing the consequences of mechanical crosstalk between adjacent pacing chambers of a print head of a continuous ink jet printer having a planar diaphragm including portions form a wall of each of the stimulation chambers, at least one charging electrode and a deflection electrode located downstream of the nozzles, and electromechanical actuators for stimulating each chamber and a plurality of stimulation lines 25 each for transmitting stimulation pulses to each of the different actuators, characterized in that simultaneously with the sending of a stimulation pulse to an actuator of a stimulated chamber, each of the chambers adjacent to the stimulated chamber is sent with compensation pulses to each chamber actuators adjacent to the stimulated chamber.
    [0010] The document FR-A1-2 971 199 (corresponding to the documents WO-A1-2012 / 107461 and US-A1-2013 / 307891) [4], describes a printing control method in which a change of the polarity between two neighboring nozzles. More specifically, this document discloses, according to claim 1, a print control method of a binary continuous ink jet printer provided with a printhead, or a printhead. such a printer for printing a pattern on a printing medium moving relative to the head, the head comprising: - a generator called multi-nozzle drops comprising: - a body comprising: 10 - suitable stimulation chambers each to receive ink under pressure, - ejection nozzles, each in communication with a stimulation chamber and each able to eject an ink jet along its longitudinal axis, the nozzles being aligned along an alignment axis and arranged in the same plane, actuators, each mechanically coupled to a stimulation chamber, and adapted to cause on command pulse breaking a jet ejected by a nozzle in communication with said chamber at a distance Lbr from the plane from SB uses, - a set of deflection arranged below the nozzles and comprising from upstream to downstream: - a shielding electrode, - a first dielectric layer adjacent to the shielding electrode, - at least one pair of deflection electrodes, each deflection electrode being flanked on both sides by a dielectric layer, the method according to which: - information is determined on the relative position of the support with respect to the head; alternating voltage the electrodes of the same pair in phase opposition with each other; pulses are sent to the actuators to form, from the breaking of a jet ejected by a nozzle in communication with the chamber to which is mechanically coupled; said actuator at a distance Lbr from the plane of the nozzles, drops not suitable for being electrically charged by the deflection electrodes or jet sections subjected to the electrostatic influence. In order to minimize the total electrical charge on the jet sections, which is contained within the electrostatic influence volume of the deflection electrodes, the pulses are controlled so as to minimize the total electrical charge on the jet sections. This document also relates, according to claim 9, to a binary continuous inkjet printer for implementing said control method. Document FR-A1-2 975 632 (corresponding to documents WO-A1-2012 / 163830 and US-A1-2014 / 168322) [5] describes how to increase the printing speed from 2 to 10 m / s thanks to the generator of drops. More specifically, this document describes, according to claim 1, a method for printing a continuous ink jet multi-nozzle printer or a print head of such a printer in order to print a pattern. on a print medium moving relative to the head, the head comprising: - a multi-nozzle drop generator comprising - a body comprising: - one or more pressurized chambers each adapted to receive ink under pressure, Ejection nozzles in hydraulic communication with a pressurized chamber and each capable of ejecting an inkjet having a speed Vj along its longitudinal axis (A), the nozzles being aligned along an alignment axis and arranged in a same plane, - actuators, able to cause on command pulse breaking a jet ejected by a nozzle to form a succession of drops, the method according to which the support has with respect to the head, a speed Vs, the distance e consecutive pixels in the direction of displacement of the support is Dii, and according to which, drops of a first category and drops of a second category are formed by jet breaking, the drops of the first category each having a first volume. , all the first 30 volumes being substantially equal to each other, the second category drops having 12 second volumes not necessarily equal to each other but all the drops of second category having a volume which is not equal to the volume of a droplet. of the first category, the trajectories followed by the drops of the first and second categories are differentiated by applying to at least one of the drop categories a deflection force capable of differentiating the trajectories of the drops of the first category and the drops of the second category. , the trajectory of the drops of first category meeting the printing medium and the trajectory of the drops of second categories encountering a gutter recovery of these drops, it creates information relating to the moments where the successive pixels to print scroll in a position where they are likely to be printed, for the printing of a black pixel followed by a a white pixel is formed a drop of first category, and a drop of second category, the cumulative duration of formation of these drops of first and second categories being equal to or greater than the running time of a pixel.
    [0011] In documents [1], [2], [3], [4], and [5], there is no description of the specific inks used in the printers, print heads and methods of these documents. nor any suggestion as to the criteria to guide the choice of these inks. There is therefore a need for ink compositions and more generally for liquid compositions which are specifically adapted to the so-called "SPI" technique as defined above and which can be used especially in processes, methods, printheads and printers described in documents [1], [2], [3], [4], and [5], and explicitly set forth hereinabove. The object of the present invention is, among other things, to meet this need and to provide liquid compositions which are specifically adapted to the so-called "SPI" technique, as defined above, and which can in particular be used , implemented in the methods, methods and printers described in documents [1], [2], [3], [4], and [5] explicitly stated above in the present description.
    [0012] SUMMARY OF THE INVENTION This and other objects are achieved according to the invention by a liquid composition, such as an ink composition, liquid at room temperature, comprising a solvent, said liquid composition being a liquid composition specifically for printing by a binary deviated continuous jet printing technique in which said liquid composition forms upon printing drops which are not charged by an electric field, which have each having a zero electric charge, which each form a dipole under the effect of an electric field, and which are then deflected by said electric field, characterized in that said liquid composition has at least one characteristic selected from the following features: a) a conductivity at 20 ° C greater than or equal to 5 μS / cm, preferably a conductivity at 20 ° C of 5 to 500 μS / cm, preferably a conductivity at 20 ° C of 5 to 500 μS / cm, the value 500 μS / cm being excluded, better a conductivity at 20 ° C of 5 to 400 μS / cm, better still a conductivity at 20 ° C of 30 to 400 μS / cm, for example from 30 to 200 μS / cm; b) a dynamic viscosity at 20 ° C of 1 to 25 cPs, preferably 6 to 25 cPs; c) a density of 0.8 to 2.5 g / cm 3, preferably 1.2 to 2.5 g / cm 3 Note that the electrical conductivity is measured with a commercial apparatus and according to the well-known principle of the invention. one skilled in the art, for example described on the site: http://fr.wikipedia.org/wiki/Conductim%C3%A9trie. Note that the dynamic viscosity is measured for example using a coaxial cylinder viscometer. The term "liquid composition" covers both inks and so-called "functional liquid" liquids. A functional liquid may be any liquid allowing the deposition of a substance having a particular function, for example and without being exhaustive: a dyeing function, medicinal, waterproofing, fixing, refractory, conductive, insulating, anti-counterfeiting, in particular for pretreatments and post-treatments of textiles.
    [0013] A functional liquid can generally be considered to differ from an ink in that an ink is in principle colored while a functional liquid is not necessarily colored. Pretreatments of the above-mentioned textiles may be generally defined as treatments which are used to prepare the textile prior to printing, either to assist fixing or to prevent it in places. The post-treatments of the aforementioned textiles can be varied and are well known to those skilled in the art. By "ambient temperature" is generally meant a temperature of 5 ° C to 30 ° C, preferably 10 ° C to 25 ° C, more preferably 15 ° C to 24 ° C, more preferably 20 ° C to 23 ° C. ° C. It is understood that the ink is liquid at atmospheric pressure. The term "binary" is well known in this field of the art and has been clearly defined above. Advantageously, the liquid composition according to the invention which has at least two characteristics chosen from characteristics a), b), and c).
    [0014] Preferably, the liquid composition according to the invention has all of the characteristics a), b) and c) at the same time. The liquid composition according to the invention is a liquid composition specifically for printing by a very specific printing technique, namely a binary deviated continuous jet printing technique, in which the liquid composition forms at the time of printing. printing drops that are not charged by an electric field, each have a zero electric charge, each form a dipole under the effect of an electric field, and are then deflected by said electric field. This technique is referred to as "SPI" for convenience. The liquid composition according to the invention is a composition for any SPI technique, ie for all methods, methods, "SPI", and it can be implemented in all printers and printheads operating according to this technique. Thus, it is expressly stated that the liquid composition according to the invention is a composition for methods, methods, printers and printing heads as described in documents [1], [2], [3], [4] or [5] cited above; for the methods, methods, printers and print heads of these documents as explicitly set forth herein; and for any method, method, printer, or printhead defined by the combination of features of at least two methods, methods, printers, or printheads as described in documents [1], [2], [3], [4] or [5] described above; or defined by the combination of at least two methods, methods, printers or print heads as explicitly discussed hereinabove. By way of combination, mention may be made of the combination of documents [1] and [2] or documents [1] and [2] and of one or more of documents [3] to [5]. This means that the ink composition according to the invention is intrinsically formulated for printing by this specific "SPI" technique and is therefore intrinsically different from a liquid composition for the "DOD" printing technique. or the conventional "CIJ" printing technique, namely a "Cil" technique. More exactly, the liquid composition according to the invention is first of all a liquid composition for printing by a deflected continuous jet printing technique "CIJ", and from this simple fact, it is clearly different from a liquid composition for printing by "DOD" drop-on-demand printing technique.
    [0015] Next, the liquid composition according to the invention forms, during printing, drops which are not charged by an electric field, each have a zero electric charge, each form a dipole under the effect of an electric field. while compositions for the conventional "CIJ" technique form charged drops. Finally, the liquid composition according to the invention is printed using an electric field to deflect the drops, which again clearly differentiates it from a liquid composition for the DOD technique. The liquid composition according to the invention is characterized in that it also has at least one of the characteristics a), b) and c), preferably two of the characteristics a), b) and c) and preferably all characteristics a), b), 25 and c). It has been found that the liquid composition according to the invention, which possesses at least one, preferably two of these three characteristics, and more preferably both of these three features, is particularly suitable for the specific printing technique. so-called "SPI" defined above.
    [0016] These (these) characteristics further differentiate the liquid composition according to the invention from the liquid compositions for the "DOD" printing technique or the conventional "ICJ" printing technique and give the composition of liquid according to the invention advantageous properties compared to liquid compositions for the printing technique by "DOD" or printing technique by "CIJ". Thus, the liquid composition according to the invention has a conductivity at 20 ° C greater than or equal to 5 μS / cm, preferably a conductivity at 20 ° C of 5 to 500 μS / cm, more preferably a conductivity at 20 ° C. ° C from 5 to 500 μS / cm, the value 500 μS / cm being excluded, better a conductivity at 20 ° C of 5 to 400 μS / cm, better still a conductivity at 20 ° C of 30 to 400 μS / cm, for example from 30 to 200 μS / cm, whereas the liquid compositions for the "CIJ" printing technique have a conductivity at 20 ° C of 500 μS / cm or more.
    [0017] The liquid composition according to the invention has a viscosity at 20 ° C of 1 to 25 cPs, preferably 6 to 25 cPs, while the liquid compositions for the printing technique by "CIJ" have a viscosity at 20 ° C, from 3 to 5 cPs. The liquid composition according to the invention has a density of 0.8 to 2.5 g / cm 3, preferably 1.2 to 2.5 g / cm 3, while the liquid compositions for the technique of printing by "CIJ" have a density of 0.8 to 1.15 g / cm3. It has been surprisingly demonstrated, by looking for liquid compositions that are specifically suitable for the so-called "SPI" technique, that precisely because of the so-called "SPI" technique for which the liquid compositions according to the invention are When designed, these compositions could have advantageous features over liquid compositions for the "DOD" printing technique or the "Cyl" printing technique. Thus, it has been found that, since it is not necessary to electrically charge drops, liquid conductivities, for example ink, very low, compared to liquids such as inks, for the "CIJ Are sufficient.
    [0018] The fact that it is therefore not necessary to add a large quantity of conductivity salt to the liquid compositions according to the invention gives a very wide latitude in the formulation of the liquid compositions according to the invention, which remain printable. in a very wide range of viscosity. In the "CIJ" technique, liquids of high densities, densities, are not printable because the deflection force of electrical origin is insufficient to deflect drops of high mass, because of an effect of inertia.
    [0019] On the contrary, it has been demonstrated according to the invention that in the so-called "SPI" technique, the printed drops are those which are not deflected, and drops of high densities in the range according to the invention. the invention are therefore printable. Advantageously, the liquid composition according to the invention further comprises solid particles, such as pigments. Preferably, the maximum size of the solid particles is 2 to 10 μm, preferably 2 to 5 μm. The average or maximum size of the particles is measured using a laser granulometer, either by quasi-elastic light scattering as with the Zetasizer Nano-S® from Malvern®, or by light diffraction as with the Mastersizer ® from the company Ma Ivern c). Here again, it is a characteristic which differentiates the liquid composition according to the invention from the liquid compositions for the "DOD" printing technique or the conventional "CIJ" printing technique. This gives the liquid composition according to the invention advantageous properties with respect to liquid compositions for the "DOD" printing technique or the conventional "ICJ" printing technique. Indeed, solid particles, such as contain liquid compositions for the conventional "ICJ" printing technique have a much smaller maximum size, less than 2 μm.
    [0020] In the conventional "ICJ" printing technique, the net charge taken by the drops depends on the perfect synchronism between the square of the charging electric field and the moment when the break occurs. The large particles disrupt the breakage and make it random, resulting in a variable load onboard, resulting in poor positioning of the drops after deflection and therefore a bad impression.
    [0021] On the contrary, in the so-called "SPI" technique, since the net charge of the drops is zero, the accuracy of the breaking moment is not critical. It has therefore been demonstrated, according to the invention, that solid particles, such as pigments, much larger than in the liquid compositions for the conventional "CIJ" technique can be used in the liquid composition according to the invention. without problem in printing and giving markings or treatments of excellent quality. The maximum size of the solid particles of the liquid composition according to the invention is no longer limited by the size of the nozzle.
    [0022] In addition, the sedimentation problems observed with large particles become manageable in the compositions according to the invention by adjusting their viscosity. In other words, according to the invention, the "large" solid particles become "printable" while they were not with the compositions for conventional ICJ.
    [0023] Advantageously, when the liquid composition according to the invention further comprises at least one polymer (for example as a binder polymer), then said polymer has a weight average molecular weight of more than 70,000 Daltons, preferably 75,000 to 200,000 Daltons, more preferably 800,000 to 200,000 Daltons. Here again, it is a feature which differentiates the liquid composition according to the invention from the liquid compositions for the "DOD" printing technique or the conventional "ICJ" printing technique. and gives the liquid composition according to the invention advantageous properties with respect to liquid compositions for the "DOD" printing technique or the "ICJ" printing technique. In fact, the polymers contained in the liquid compositions for the "ICJ" printing technique have a molecular weight which does not exceed 70 000. In a manner analogous to that described above for solid particles of large size, the solid composition according to the invention may contain very long chain polymers without causing problems in printing and giving markings or treatments of excellent quality.
    [0024] In other words, according to the invention, the very long-chain polymers become "printable" whereas they were not with conventional CIJ compositions. Advantageously, the solvent comprises one or more solvent compound (s) chosen from organic solvent compounds and water. Advantageously, the one or more organic solvent compound (s) of the solvent is (are) chosen, for example, from alcohols, in particular low molecular weight alcohols, for example aliphatic alcohols such as ethanol; ketones preferably of low molecular weight; alkylene glycol ethers; esters of alkylene glycols and esters of alkylene glycol ethers, such as acetates; dimethylformamide; N-methyl pyrrolidone; acetals; esters; linear or cyclic ethers; aliphatic, cyclic or linear hydrocarbons; aromatic hydrocarbons; and carbonates such as propylene carbonate, ethylene carbonate and dimethyl and diethyl carbonates; and their mixtures.
    [0025] Preferably, this or these solvent compound (s) has the property of dissolving the other ingredients of the ink, in particular the binder, the dyestuffs, the additives, and the like. The alcohols will preferably be chosen from linear or branched aliphatic alcohols of 1 to 8 carbon atoms, such as methanol, ethanol, propanol-1, propanol-2, n-butanol and butanol. -2, tert-butanol, etc. The ketones will preferably be chosen from ketones of 3 to 10 carbon atoms, such as acetone, butanone (methyl ethyl ketone), pentanone 2 (methyl propyl ketone), methyl 3 butanone-2 (methyl-isopropyl ketone) and 4-methyl penta-2-one (methyl isobutyl ketone).
    [0026] The alkylene glycol ethers are preferably selected from monoalkyl (C 1 -C 6 alkyl) or dialkyl (C 1 -C 6 alkyl) ethers of alkylene glycol having 1 to 10 carbon atoms in the alkylene chain. it is preferably ethylene or propylene glycol ethers, such as methoxypropanol. The alkylene glycol esters and the alkylene glycol ether esters are preferably selected from esters thereof with saturated aliphatic carboxylic acids of 1 to 6 carbon atoms, such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid and caproic acid. Examples include methoxypropyl acetate, butyldiglycol acetate, and the like. The esters are preferably selected from low molecular weight esters such as formates, acetates, propionates or butyrates of alcohols of 1 to 10 carbon atoms. The acetals are preferably selected from low molecular weight acetals such as ethylal and methylal. The ethers are preferably selected from low molecular weight ethers such as dioxolane or tetrahydrofuran. Those skilled in the art will be able to easily identify, among these volatile compounds, those which are volatile and those which are non-volatile. In the composition according to the invention, the solvent is generally at least 20% by weight of the total weight of the liquid composition, preferably the solvent is 30% to 90% by weight, more preferably 60% to 80% by weight. % by weight, of the total weight of the liquid composition.
    [0027] According to a first embodiment, the liquid composition according to the invention is an aqueous composition and the solvent comprises a majority (50% by weight or more) by weight of water relative to the total weight of the solvent, preferably the solvent comprises 100% water, that is to say consists of water.
    [0028] The liquid composition according to the invention can be essentially water-based and comprise only a very small amount of organic solvent compound (s), generally less than 10% by weight, preferably less than 5%, more preferably less than 1% by weight, based on the total weight of the composition of the liquid. The liquid composition, for example ink, according to the invention can even be substantially free of organic solvent compounds (0%). According to a second embodiment, the liquid composition according to the invention is a non-aqueous, organic composition, and the solvent comprises a majority (50% by weight or more) by weight of one or more compound (s). organic solvent (s) based on the total weight of the solvent, preferably the solvent comprises 100% of one or more organic solvent compound (s), i.e. consisting of one or more organic solvent (s). The liquid composition, for example ink, according to the invention may optionally comprise only a very small amount of water, generally less than 10% by weight, preferably less than 5%, more preferably less than 1% by weight, based on the total weight of the liquid composition. The liquid composition, for example ink, according to the invention can even be essentially free of water (0% water). In fact, in this case the water present is only water supplied being impurity in the various components of the liquid, for example ink. The higher the degree of purity of the selected components, the lower the water content. When in the liquid composition according to the invention, there is a low content or absence of water, this promotes the formation of the film of liquid, for example ink, when the binders and other dyes of the composition are insoluble in water, thereby improving the strength and adhesion properties of the composition, for example ink.
    [0029] Advantageously (in the case of a non-aqueous liquid), the solvent may comprise, preferably may consist of, one or more organic solvent (s) compound (s) and 3025801 21 optionally water with the proviso that the quantity of water complies with the conditions indicated above, namely generally less than 10% by weight, preferably less than 5%, more preferably less than 1% by weight, relative to the total weight of the composition of ink, or even 0%.
    [0030] Advantageously, the one or more organic solvent compound (s) comprises (comprise) a majority proportion by weight, relative to the total weight of the solvent (50% by weight of the total weight of the solvent or more, or even 100% by weight of the total weight of the solvent), of one or more volatile organic solvent compound (s), and a minor proportion by weight, relative to the total weight of the solvent, one or more nonvolatile organic solvent (s) compound (s). Preferably, the solvent is constituted by one or more volatile organic solvent compound (s). By "volatile organic solvent compound" it is generally meant that this compound has an evaporation rate greater than 0.5 on the scale where butyl acetate has an evaporation rate of 1. A preferred solvent according to the invention comprises a major amount by weight relative to the total weight of the solvent, preferably consists of one or more compound (s) solvent (s) chosen (s) from ketones of 3 to 10 carbon atoms, such as acetone, butanone (methyl ethyl ketone or MEK), pentanone-2 (methyl-propyl ketone), methyl-3-butanone-2 (methyl-isopropyl ketone) and 4-methylpentanone. 2 (methyl isobutyl ketone or MIK). A particularly preferred solvent comprises a major amount by weight relative to the total weight of MEK solvent, preferably consists of MEK. Another preferred solvent is ethanol.
    [0031] This preferred solvent may further comprise one or more other solvent (s) other than the ketone (s) in a minor amount by weight, based on the total weight of the solvent, for example, a amount of 0.1% to 20% by weight, preferably 5% to 15% by weight, relative to the total weight of the solvent, in order to optimize the properties of the inks. These minor solvents may be chosen from esters, ethylene glycol or propylene glycol ethers, and acetals.
    [0032] Advantageously, the liquid composition, for example ink, according to the invention may further comprise dyestuffs such as dyes and pigments. The dye (s) and / or pigment (s) may be chosen from all the dyes or pigments that are suitable for the intended use, known to those skilled in the art, some of these pigments or dyes have already been mentioned above. It has been seen above that the solid particles such as the pigments that may contain the liquid composition according to the invention may have specific particle sizes. The dyes and pigments can generally be chosen from dyes and pigments known under the name "CI Solvent Dyes" and "CI Pigments" but also from solid particles not referenced in the "Color Index" (CI) such as the particles of metals or alloys or mixtures of metals such as copper and / or silver particles for example, particles of metal oxides, ceramic particles, particles of refractory mineral compounds, and particles of any other mineral compound. By way of examples, the most common pigments and dyes, mention may be made of Solvent Black ICs 3, 7, 27, 28, Solvent Red ICs 8, 49, 29, 35, 48, 49, Solvent Blue ICs 38 , 44, 45, 70, 124, 160, 164, Solvent Yellow CI 83: 1, 79, 98, 100, 129, 126, 146, 162, 68, 89, Solvent Green IC 5, Orange Solvent IC 97 Solvent Brown ICs 20, 52, Solvent Violet IC 21, Pigment Blue dispersions 15: 1, 15: 3, 60, Pigment Green 7, Pigment Black 7, Pigment Red 48: 2, 144, 149, 166, 185, 202, 208, 214, 254, Pigment Violet 19, 23, Pigment Yellow 17, 83, 93, 139, 151, 155, 180, 191, Pigment Brown 23, 25, 41, or 6. The preferred colorants are CI Solvent Black 27 and CI Solvent Black 29.
    [0033] The preferred pigments are Pigment White 6, Pigment Black 7, Pigment Blue 60, Pigment Red 202 and Pigment Green 7. The total amount of dye (s) and / or pigment (s) is generally from 0.05 to 25. % by weight, preferably 1 to 20%, more preferably 3 to 10% of the total weight of the liquid composition.
    [0034] A dye with the lowest solubility in water, which is insoluble in water, will preferably be selected.
    [0035] By water-insoluble dye is generally meant a dye which, added to 1% by weight in demineralised water, does not visibly stain the water in the eye. Advantageously, the liquid composition according to the invention may further comprise a binder consisting of one or more binder polymers. It has been seen above that the polymers which may contain the liquid composition according to the invention may have specific molecular masses. Advantageously, this or these binder polymer (s) may be chosen from (meth) acrylic, vinylic, ketonic, hydroxyaromatic, cellulosic, styreneic, epoxy polymers, polyurethanes, styrene-acrylates and alkoxysilanes. , and combinations of two or more of these. Advantageously, the binder represents from 1% to 45% by weight, preferably from 5% to 30% by weight, more preferably from 10% to 20% by weight, of the total weight of the liquid composition according to the invention.
    [0036] The liquid composition, for example ink, according to the invention may further comprise one or more plasticizers (of the polymer (s) of the binder) chosen, for example, from plasticizers known to those skilled in the art and selected according to the binder used. Mention may be made, as a plasticizer, for example of thermoplastic polyurethanes, phthalates, adipates, citrates and citric acid esters, alkyl phosphates, glycerol, lactic acid, oleic acid, polypropylene glycol, triglycerides of fatty acids, levulinic acid; and their mixtures. The plasticizer (s) is (are) generally present in a proportion of at least 0.05%, preferably from 0.1 to 20% by weight, of the total weight of the liquid composition, for example 25 of ink. The composition according to the invention may, in addition, optionally comprise at least one conductivity salt, unless another ingredient of the ink such as a dye, pigment, or other, is itself an ionizable compound such as a salt which can bring conductivity when dissociated, and gives sufficient conductivity to the ink that there is no need to add a conductivity salt itself, this is particularly the case with compounds known under the name "CI Solvent Black 27, 29, 35 and 45", already mentioned.
    [0037] However, it will sometimes be necessary to include, in the liquid composition, for example ink, according to the invention a salt of conductivity proper, different from the ionizable compounds, such as the dyes, pigments and other ingredients mentioned. upper. By "conductivity salt" is generally meant a salt which provides electrical conductivity to the liquid composition, for example ink. This conductivity salt may thus be chosen from alkali metal salts such as lithium, sodium, potassium, alkaline earth metal salts such as magnesium and calcium, and simple or quaternary ammonium salts; these salts being in the form of halides (chlorides, bromides, iodides, fluorides), perchlorates, nitrates, thiocyanates, formates, acetates, sulphates, propionates, trifluoroacetates, triflates (trifluoromethanesulfonates), hexafluorophosphates, hexafluoroantimonates, tetrafluoroborates, picrates, carboxylates and sulfonates etc. If the markings obtained with the liquid composition, for example of ink, according to the invention must be resistant to water, this or these salt (s) of conductivity will be chosen from those which are insoluble in water ( that is to say generally, whose solubility in water is less than 0.5% by weight), such as quaternary ammoniums with a fatty chain and hexafluorophosphates or hexafluroantimonates. These conductivity salts will therefore be present, if necessary, in the liquid composition so as to impart to the composition the above conductivity: preferably, their amount is 0.01 to 10% by weight, more preferably 0.01 to 1% by weight, and more preferably 0.01 to 0.05% by weight, of the total weight of the liquid composition. Since the liquid composition according to the invention has a conductivity generally lower than liquids, such as inks, for the "CL" technique the amount of conductivity salt which may be added will generally be smaller than in these liquids for "CIJ". The composition according to the invention may, in addition, comprise one or more additive (s) chosen (s) among the compounds which improve the solubility of some of its components, the print quality, the adhesion, or the control wetting the liquid, for example ink on different media.
    [0038] The additive (s) may be selected, for example, from antifoaming agents, chemical stabilizers, UV stabilizers; surfactants, such as BYK UV-3500 Fluorad FC430, salt corrosion inhibitors, bactericides, fungicides and biocides, pH buffers, and the like. The additive (s) is (are) used at very low doses, generally less than or equal to 5% and sometimes as low as 0.01%, depending on whether it is antifoam stabilizers or surfactants. The invention also relates to the use of the liquid composition, such as an ink composition, according to the invention, as described above, in a printer or print head using employs a binary deviated continuous jet printing technique, wherein said liquid composition forms upon printing 10 drops which are not charged by an electric field, each having a zero electric charge, which each form a dipole under the effect of an electric field, and which are then deflected by said electric field. This printing technique is therefore the "SPI" technique. This technique, this printer and this print head are as described in the documents [1], [2], [3], [4], or [ 5] cited above or in any combination thereof. These include printers and print heads of these documents taken alone or in combination as explicitly set forth herein. The invention also relates to a process for marking or treating substrates, supports or objects, for example porous or nonporous, by spraying on these substrates, supports or objects of a liquid composition, such as a ink composition, by a binary deviated continuous jet printing technique, wherein said liquid composition forms upon printing drops which are not charged by an electric field, which each have a zero electric charge, which each form a dipole under the effect of an electric field, and which are then deflected by said electric field, characterized in that said liquid composition, such as an ink composition, is the liquid composition, such as an ink composition according to the invention, as described above. This printing technique is therefore the so-called "SPI" technique. This technique is as described in documents [1], [2], [3], [4], or [5] cited above taken alone or in combination through methods, methods, printers and printheads using this technique. These include the technique of printing these documents alone or in combination as explicitly stated hereinabove through the disclosure of methods, methods, printers and printheads. implementing this technique. The invention further relates to a substrate, support or object, for example, porous or non-porous, provided with a marking or treatment obtained by drying and / or absorption (in the substrate or support) of the liquid composition, such as an ink composition, according to the invention, as described above. Said marking generally comprises essentially all the nonvolatile solids, such as the dye or pigment of the liquid composition and / or the binder, and is obtained by evaporation and / or absorption in the substrate, essentially all the other volatile or migrating components of the liquid composition, for example the ink composition, such as the vehicle. This substrate may be metal, for example, aluminum, steel (beverage cans); glass (glass bottles); ceramic; a material containing cellulose such as cellophane, paper, possibly coated or glossy, cardboard or wood; an organic polymer, in particular a thermoplastic polymer ("plastic"), especially in the form of a film, chosen for example from PVDC, PVC, polyesters, PET, polyolefins, such as polyethylenes (PE) polypropylenes (PP); poly (methyl methacrylate) PMMA also called "Plexiglas"; Fabric ; textile; natural or synthetic rubber; or any other non-porous or porous substance; or composite of many of the foregoing materials. We obtain markings, impressions, treatments of excellent quality on all substrates, and in particular on flexible substrates, or very flexible. The invention will be better understood on reading the following description of embodiments of the invention given as illustrative and non-limiting examples. DETAILED DESCRIPTION OF PARTICULAR EMBODIMENTS The invention will be better understood on reading the following description of embodiments of the invention, given by way of illustrative and non-limiting examples.
    [0039] Examples 1 to 6: In all these examples, ink compositions according to the invention are prepared. These ink compositions comprise the ingredients mentioned in Table I, in the proportions mentioned in Table I. These compositions are generally prepared by simple mixing of the ingredients.
    [0040] Table I also shows the ink compositions and, when these parameters apply, the average particle size "Zave" or (in μm), the maximum particle size (in μm) , the conductivity (in μS / cm), the viscosity (in mPa. $) and finally it was clarified whether or not the inks were suitable for printing by the deviated continuous jet technique or by the so-called "SPI" technique.
    [0041] TABLE I - INK COMPOSITIONS Constituents (percentages by weight) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Methyl ethyl ketone 68 46 84.95 Ethanol 77.6 94 60% Ag-Cu dispersed in water (Cima-Nanotech® Israel) 98 Hostatint® Oxide Red AB 100 50 (Clariant®) CK 13074 black pigment (FeCrCoNi stain) by Ferro Corp® 20 Verymaster® RD172 "1.8iim" (Addmaster ® UK) 9 Microlith® Blue A3R-K 5 Neocryl® B817 12.4 10 Vinnol® E15-45M 10 Solsperse® 32500 1 2 Octyltriethoxysilane 5 UN 03 1 1 KSCN 1 2 2 0.05 Particle size Zave (pm) 1.2 pm 5 , 5 Size of part. max (I-Im) -3 pm -7 <1gm Conductivity (μS / cm) 815 1200 200 45 Viscosity (mPa $) 6.2 15.4 1.25 21 5.5 Density 2.056 Printing in "ICJ" No No No No No No "SPI" printing Yes Yes Yes Yes Yes Yes 3025801 29 60% Ag-Cu from Cima-Nanotech® Israel, is a concentrated aqueous dispersion of submicron silver and copper particles, its density is very large compared to what can be projected by CIJ inkjet. Hostatint® Oxide Red A-B 100 from Clariant® is a particularly dense red iron oxide pigment. CK 13074 black pigment (FeCrCoNi stain) is a refractory ceramic black pigment from Ferro Corp. ® particularly high particle size, and non-projectile ink jet CIJ. Verymaster® RD172 "1,8iim" from Addmaster® UK is a special "anti-stokes" fluorescent mineral pigment of particle size too high to be projected by ICJ. Microlith® Blue A3R-K is a blue pigment type Cl. Pigment blue 60 from BASF®. Neocryl® B817 is an acrylic resin from DSM®.
    [0042] Vinnol® E15-45M is a vinyl resin from Wacker®. Solsperse® 32500 is a dispersant from Lubrizol®, which is very effective in dispersing mineral pigments. The word "No" indicates that the ink is not suitable for printing by the intended technique such as "Cil".
    [0043] "Yes" indicates that the ink is suitable for printing by the intended technique such as "SPI". The ink composition according to the invention, of Example 1, is a high particle size ink composition. The ink composition according to the invention, of Example 2, is a very high particle size ink composition. The ink composition according to the invention, of Example 3, is a high density ink composition. The ink composition according to the invention, of Example 4, is a low viscosity ink composition.
    [0044] The ink composition according to the invention, of Example 5, is a high viscosity ink composition.
    [0045] The ink composition according to the invention, of Example 6, is a low conductivity ink composition. The compositions of Examples 1 to 6 each used in a Markem Imaje® 9040 or 9040 Contrast Head G printer, which is a printer which employs a conventional "ICJ" technique, failed to provide satisfactory markings: For the composition of Example 1, the drops are misplaced, very randomly. For the composition of Example 2, no printing could be obtained for a defect called "phase detection". For the composition of Example 3, no printing could be obtained because of excessive density and viscosity. The pressure necessary to obtain the nominal jet speed could not be obtained. For the composition of Example 4, the viscosity was too low for the breaking of the jet to be in the charging electrode. The Rayleigh conditions necessary for breaking are not met.
    [0046] For the composition of Example 5, the viscosity is too high, and the conductivity too low, so that both the pressure required to obtain the nominal jet speed and the proper charge of the drops are obtained. . For the composition of Example 6, the conductivity is too low, so that the proper charge drops is obtained, there is still a so-called defect of "phase detection". On the other hand, the compositions of Examples 1 to 6 gave suitable impressions in a prototype printer using the so-called "SPI" technique having a nozzle diameter of 40 μm.
    权利要求:
    Claims (33)
    [0001]
    REVENDICATIONS1. A liquid composition, such as an ink composition, liquid at room temperature, comprising a solvent, said liquid composition being a liquid composition specifically for printing by a binary deviated continuous jet printing technique in which said composition of liquid form during the printing of the drops which are not charged by an electric field, which each have a zero electric charge, which each form a dipole under the effect of an electric field, and which are then deflected by said electric field, characterized in that said liquid composition has at least one characteristic selected from the following characteristics: a) a conductivity at 20 ° C greater than or equal to 5 μS / cm, preferably a conductivity at 20 ° C of 5 at 500 μS / cm, more preferably a conductivity at 20 ° C of 5 to 500 μS / cm, the value 500 μS / cm being excluded, better a conductivity at 20 ° C. from 5 to 400 μS / cm, more preferably a conductivity at 20 ° C of 30 to 400 μS / cm, for example 30 to 200 μS / cm; b) a dynamic viscosity at 20 ° C of 1 to 25 cPs, preferably 6 to 25 cPs; c) a density of 0.8 to 2.5 g / cm3, preferably 1.2 to 2.5 g / cm3.
    [0002]
    The liquid composition of claim 1, which has at least two characteristics selected from characteristics a), b), and c).
    [0003]
    A liquid composition according to claim 1, which has all of the characteristics a), b) and c) at the same time.
    [0004]
    A liquid composition according to any one of the preceding claims, wherein the solvent comprises one or more compound (s), selected from organic solvent compounds and water.
    [0005]
    5. The liquid composition as claimed in claim 4, wherein the one or more organic solvent compound (s) of the solvent is (are) chosen from among the alcohols, in particular the low-weight alcohols. molecular, for example, aliphatic alcohols such as ethanol; ketones preferably of low molecular weight; alkylene glycol ethers; Esters of alkylene glycols and esters of alkylene glycol ethers, such as acetates; dimethylformamide; N-methyl pyrrolidone; acetals; esters; linear or cyclic ethers; aliphatic, cyclic or linear hydrocarbons; aromatic hydrocarbons; and carbonates such as propylene carbonate, ethylene carbonate and dimethyl and diethyl carbonates; and their mixtures.
    [0006]
    A liquid composition according to any one of the preceding claims, wherein the solvent is at least 20% by weight of the total weight of the liquid composition, preferably the solvent is from 30% to 90% by weight, more preferably 60% to 80% by weight of the total weight of the liquid composition.
    [0007]
    7. A liquid composition according to claim 4, which is an aqueous composition and wherein the solvent comprises a major amount by weight of water relative to the total weight of the solvent, preferably the solvent comprises 100% water. 15
    [0008]
    A liquid composition according to claim 7 which comprises less than 10% by weight, preferably less than 5% by weight, more preferably less than 1% by weight, more preferably 0% by weight of organic solvent compounds with respect to total weight of the composition of the liquid. 20
    [0009]
    The liquid composition of claim 4, which is a non-aqueous, organic composition, and wherein the solvent comprises a major amount by weight of one or more organic solvent (s) relative to to the total weight of the solvent, preferably the solvent comprises 100% of one or more organic solvent compound (s).
    [0010]
    A liquid composition according to claim 9 which comprises less than 10% by weight, preferably less than 5% by weight, more preferably less than 1% by weight of water, more preferably 0% by weight of water, relative to the total weight of the liquid composition. 30
    [0011]
    11. A liquid composition according to claim 10, wherein the solvent comprises, preferably consists of, one or more organic solvent (s) and optionally water. 3025801 33
    [0012]
    The liquid composition according to claim 11, wherein said one or more organic solvent compound (s) comprises (comprises) a major proportion by weight, based on the total weight of the solvent of one or more compounds (s) volatile organic solvent (s), and a minor proportion by weight, based on the total weight of the solvent, of one or more compound (s) organic solvent (s) not volatile (s); preferably, the solvent consists of one or more volatile organic solvent (s) compound (s).
    [0013]
    13. The liquid composition according to any one of claims 11 to 12, wherein the solvent comprises a major amount by weight based on the total weight of the solvent, preferably consists of one or more solvent compound (s) ( s) selected from ketones of 3 to 10 carbon atoms, such as acetone, butanone (methyl ethyl ketone or MEK), pentanone-2 (methyl-propyl ketone), methyl 3 butanone 2 (methyl isopropyl ketone) and 4-methylpentanone-2 (methyl isobutyl ketone or MIK). 15
    [0014]
    14. A liquid composition according to claim 13, wherein the solvent comprises a major amount by weight relative to the total weight of MEK solvent, preferably consists of MEK. 20
    [0015]
    The liquid composition according to claim 13 or 14, wherein the solvent further comprises one or more other solvent compound (s) other than the ketone (s), preferably selected from esters, the ethylene glycol or propylene glycol ethers, and the acetals, in a minor total amount by weight, relative to the total weight of the solvent, for example in an amount of from 0.1% to 20% by weight, preferably from 5% to 15% by weight, based on the total weight of the solvent.
    [0016]
    The liquid composition according to any one of the preceding claims, which further comprises one or more dyes and / or pigment (s). 30
    [0017]
    17. A liquid composition according to claim 16, wherein said dye (s) and / or pigment (s) is (are) chosen from dyes and pigments known under the name "CI Solvent Dyes" and CI Pigments ", and among the solid particles not referenced in the" Color Index "(CI) such as particles of metals or alloys or mixtures of metals such as particles of copper and / or silver, metal oxide particles, ceramic particles, particles of refractory mineral compounds, and particles of any other mineral compound. 5
    [0018]
    18. The liquid composition as claimed in claim 17, in which said "Solvent Dyes" is (are) chosen from among the Black Solvent CIs 3, 7, 27, 28, 29, 35, 48, 49, the CIs. Solvent Blue 38, 44, 45, 70, 79, 98, 100, 129, Solvent Red 8, 49, 68, 89, 124, 160, 164 CI Solvent Yellow 83: 1, 126, 146, 162, the Solvent Green 5 IC, the Orange Solvent IC 97, the Brown Solvent ICs 20, 52, and the Violet Solvent CI 9. 10
    [0019]
    19. A liquid composition according to claim 17, wherein said one or more "C I. Pigments" is (are) selected from among dispersions of Pigment Blue 15: 1, 15: 3, 60, of Pigment Green 7, Pigment Black 7, Pigment Red 48: 2, 144, 149, 166, 185, 202, 208, 214, 254, Pigment Violet 19, 23, Pigment Yellow 17, 83, 93, 139, 151, 155, 180, 191, 15 Pigment Brown 23, 25, 41, or Pigment White 6.
    [0020]
    20. A liquid composition according to any one of claims 16 to 19, comprising in total from 0.05 to 25% by weight of dye (s) and / or pigment (s), preferably from 1 to 20%, of more preferably from 3 to 10% by weight of dye (s) and / or pigment (s) relative to the total weight of the liquid composition.
    [0021]
    21. A liquid composition according to any one of the preceding claims, which further comprises a binder consisting of one or more binder polymer (s). 25
    [0022]
    22. A liquid composition according to claim 21, wherein the binder polymer (s) is (are) chosen from (meth) acrylic, vinylic, ketonic, hydroxyaromatic, cellulosic, styrene, epoxy polymers. , polyurethanes, styrene acrylates, alkoxysilanes, and combinations of two or more thereof. 30
    [0023]
    23. A liquid composition according to any one of claims 21 and 22, wherein the binder is from 1% to 45% by weight, preferably from 5% to 30% by weight, more preferably from 10% to 20% by weight, the total weight of the liquid composition. 3025801
    [0024]
    24. Liquid composition according to any one of the preceding claims, further comprising at least one plasticizer (s) in a proportion of at least 0.05%, preferably 0.1 to 20% by weight of the total weight. of the liquid composition. 5
    [0025]
    25. A liquid composition according to any one of the preceding claims, further comprising at least one conductivity salt in a proportion of 0.01 to 10% by weight, preferably 0.01 to 1% by weight, and preferably from 0.01 to 0.05% by weight, of the total weight of the liquid composition. 10
    [0026]
    The liquid composition of claim 25, wherein said conductivity salt is selected from alkali metal salts such as lithium, sodium, potassium, alkaline earth metal salts such as magnesium and calcium, and simple or quaternary ammonium salts; these salts being in the form of halides, perchlorates, nitrates, thiocyanates, formates, acetates, sulfates, propionates, trifluoroacetates, triflates (trifluoromethanesulfonates), hexafluorophosphates, hexafluoroantimonates, tetrafluoroborates, picrates, carboxylates and sulfonates.
    [0027]
    27. A liquid composition according to any one of the preceding claims, further comprising one or more additives selected from anti-foam agents; chemical stabilizers; UV stabilizers; surfactants; agents inhibiting corrosion by salts; bactericides, fungicides and biocides; and pH buffers.
    [0028]
    28. A liquid composition according to any one of the preceding claims, which when it comprises at least one polymer, is characterized in that said polymer has a weight average molecular weight of more than 70,000 Daltons, preferably 75,000 to 200,000 Daltons, more preferably 800,000 to 200,000 Daltons.
    [0029]
    29. A liquid composition according to any one of the preceding claims, which when further comprising solid particles, is characterized in that the maximum particle size of the solid particles is 2 to 10 μm, preferably 2 to 10 μm. at 5μm.
    [0030]
    30. Use of the liquid composition, such as an ink composition according to any of claims 1 to 29, in a printer or printhead employing a binary deviated continuous jet printing technique. wherein said liquid composition forms, upon printing, drops which are not charged by an electric field, each of which has zero electrical charge, which each form a dipole under the effect of an electric field, and are then deflected by said electric field. 10
    [0031]
    31. A process for marking or treating substrates, supports or objects, for example porous or non-porous, by spraying on these substrates, supports or objects of a liquid composition, such as an ink composition, by a a binary deviated continuous jet printing technique, wherein said liquid composition forms, upon printing, drops which are not charged by an electric field, each of which has zero electrical charge, which each form a dipole under the effect of an electric field, and which are then deflected by said electric field, characterized in that said liquid composition, such as an ink composition is the liquid composition, such as an ink composition according to any of claims 1 to 29.
    [0032]
    32. Substrate, support or object characterized in that it is provided with a marking obtained by drying and / or absorption of the liquid composition according to any one of claims 1 to 29. 25
    [0033]
    33. Substrate, support or object according to claim 32, characterized in that the substrate is made of metal, for example aluminum, steel; glass; ceramic; a material containing cellulose such as cellophane, paper, possibly coated or glossy, cardboard or wood; an organic polymer, especially a thermoplastic polymer ("plastic"), chosen for example from PVDC, PVC, polyesters, PET, polyolefins, such as polyethylenes (PE), polypropylenes (PP); poly (methyl methacrylate) PMMA ("Plexiglas"); Fabric ; natural rubber or synthetic 3025801 37; or any other non-porous or porous substance; or composite of many of the foregoing materials.
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    法律状态:
    2015-09-30| PLFP| Fee payment|Year of fee payment: 2 |
    2016-03-18| PLSC| Publication of the preliminary search report|Effective date: 20160318 |
    2016-09-28| PLFP| Fee payment|Year of fee payment: 3 |
    2017-09-29| PLFP| Fee payment|Year of fee payment: 4 |
    2018-09-28| PLFP| Fee payment|Year of fee payment: 5 |
    2019-09-30| PLFP| Fee payment|Year of fee payment: 6 |
    2020-09-30| PLFP| Fee payment|Year of fee payment: 7 |
    2021-09-30| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1458747|2014-09-16|
    FR1458747A|FR3025801B1|2014-09-16|2014-09-16|LIQUID COMPOSITION, IN PARTICULAR INK, FOR CONTINUOUS BINARY DIE PRINTING WITH UNLATCHED DROPS, USE OF THE SAME, MARKING METHOD, AND BRAND SUBSTRATE.|FR1458747A| FR3025801B1|2014-09-16|2014-09-16|LIQUID COMPOSITION, IN PARTICULAR INK, FOR CONTINUOUS BINARY DIE PRINTING WITH UNLATCHED DROPS, USE OF THE SAME, MARKING METHOD, AND BRAND SUBSTRATE.|
    US14/855,659| US9783695B2|2014-09-16|2015-09-16|Liquid composition, especially ink composition, for printing with a binary deflected continuous jet, with non-charged drops, use of said composition, marking method and marked substrate|
    CN201510591491.6A| CN105419482A|2014-09-16|2015-09-16|Liquid Composition, Especially Ink Composition, For Printing With A Binary Deflected Continuous Jet, With Non-Charged Drops, Use Of Said Composition, Marking Method And Marked Substrate|
    EP15185410.6A| EP2998370A1|2014-09-16|2015-09-16|Liquid composition, especially ink composition, for printing with a binary deflected continuous jet, with non-charged drops, use of said composition, marking method and marked substrate|
    US15/679,559| US10266715B2|2014-09-16|2017-08-17|Liquid composition, especially ink composition, for printing with a binary deflected continuous jet, with non-charged drops, use of said composition, marking method and marked substrate|
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