DE2647939A1 - COINCIDENCE PAINT JET - Google Patents

Description

P 10 614 D / 75361/753611

Xerox Square, Rochester, New York 14644, USA

Koinz idena- ffar-bdüse

The invention relates to a multiple color nozzle printing system that Dye, printer's ink or ink droplets through certain Dye, printer's ink or ink nozzle openings on one Command corresponding to a to be printed or to be recorded ' the end of the image. In a paint nozzle device of this type, there is usually a separate one for each paint nozzle opening Pressure chamber or power transmission pressure chamber verx '/ ends. One Device for the change in position or for a displacement, for example a piezoelectric element, stands with the Chamber in connection and is actuated or set in puncture, to compress the chamber and thereby color, Printer's ink or ink from the corresponding opening to push out. Pure piezoelectric element becomes one separate electronic control stage or a separate electronic Pathogen used. In a system with a large Number of paint nozzles makes this system very expensive and complicated ;, Furthermore, this is not desirable when using a dense, linear arrangement of paint nozzles.

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TELEPHONE (O89) 02 20 63

TELEX Ο5-2Θ3ΒΟ

TELEKOf-ERER

The aim of the present invention is to provide a coincidence-on-control paint nozzle construction that serves as a basis for different, different systems of paint nozzle arrangements serves.

It is a further object of the present invention to provide a multiple color nozzle printing system to create which much fewer electronic exciters or control stages and much less Force resp /. Pressure transducer required than corresponds to the number of color nozzles used in the system.

To achieve the aforementioned goals, there is a multiple paint nozzle system provided, in which the number of electronic excitation, control or actuation devices and the number the force converter chambers or pressure chambers is much smaller than the number of paint nozzles. In one embodiment, has Each paint nozzle has two paint inlet or inlet channels that are in communication with an outlet opening. Every inlet port 'stands with a corresponding pressure chamber or /. a corresponding force transducer in connection and each pressure chamber or each force converter is equipped with a corresponding electronic Exciter or a corresponding electronic control or actuation device connected. Only then does the nozzle become a droplet of paint is pressed out when the pressure pulses generated by the respective force transducers or pressure chambers apply of the opening coincide or coincide in time with a particular pair of dye inlet channels stand.

It is another object of the invention to provide a multi-color nozzle printing system to create that can push drops out at a frequency and frequency as great as at the conventional systems in which a single pressure or force transducer or a single pressure chamber for each nozzle is used, with all or all of the area occupied by the force transducers or pressure chambers the area occupied by the force transducers or pressure chambers for

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Each nozzle is smaller than in the conventional systems, so that the force transducers or pressure canoes are packed more tightly and can be closer to one another, resulting in a denser nozzle arrangement or an arrangement with more nozzles per length or area than is possible with conventional systems.

To achieve this goal, each nozzle has two paint inlet channels or lines. A main pressure chamber is in communication with an inlet port of each nozzle. The other inlet each nozzle has a separate respective drop ejection pressure chamber in connection. The main pressure chamber is activated or controlled and generates a pressure pulse at the outlet of each nozzle. However, this pressure pulse is smaller than the threshold pressure pulse at which a Color droplets is pressed out of the outlet opening. Simultaneously occurring pressure pulses at the openings that from any other drop-sprouting pressure chamber and from the main pressure chamber, result at the outlet opening a pressure pulse that is greater than the Sctmellwert, see above that a drop is squeezed out of a certain opening.

There are various systems for coincidence color nozzle arrangements created, in which each paint nozzle has two inlet channels connected to an outlet opening or -lines on v / iron. A drop of color will only come out of the Opening pushed out when pressure pulses that occur at the inlet channels are simultaneously present at the opening.

In a system, each inlet channel of a nozzle has a corresponding force or pressure transducer or with a corresponding one Pressure chamber in connection and each pressure chamber is with a corresponding electronic excitation or control or Actuator connected. Bsi this system is the number of electronic control devices and pressure chambers much smaller than the number of fier paint nozzles. These

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Pressure chambers are operated in a time-sharing system to provide a To squeeze out drops of paint. The actuation or excitation of two pressure chambers associated with a specific nozzle ask, is carried out so that when the by the respective Force transducers or pressure chambers generated pressure pulses occur simultaneously at the opening, from the opening Drop is squeezed out.

In another system according to the invention, a main pressure chamber is in communication with an inlet port of each nozzle. The other inlet of each nozzle is connected to a separate, respective droplet ejection pressure chamber, and each gob ejection pressure chamber is connected to a corresponding electronic excitation or actuation device. In this system, the main pressure chamber is actuated or excited, so that a pressure pulse is generated at each opening, which, however, is below a threshold pressure pulse at which a drop of paint is pushed out of the opening. The actuation or excitation of any of the drop ejection pressure chambers to generate a pressure pulse which occurs at a certain opening simultaneously with the pressure pulse generated by the main pressure chamber causes the pressure pulse at the opening to be greater than the threshold value, so that the drops are removed. ; this predetermined opening is pushed out. The TropT ^- - ^ nauspress printing chambers are not operated according to the Time Sharinj system, so that a higher color expression frequency or frequency is possible than with known systems. The use of a main pressure chamber enables the total area or area occupied by the force transducers or pressure chambers for each nozzle to be reduced. This allows a closer packing or a closer spatial arrangement of the pressure chambers, so that a denser nozzle arrangement or more nozzles per unit area can be accommodated than would be the case if the coincidence nozzle principle were not used.

The German expression "Farbdüse" or "Farbdüsensystem" or

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" ^{Ink jet technology 1} · is also known in Germany under the Anglo-Saxon expression" ink jet "," ink jet system "or" ink jet technology ".

The invention is explained below with reference to the drawings, for example explained in more detail. Show it:

Fig. 1 shows a paint nozzle device in a partially broken away representation, which the basic principles of the present Invention reproduces,

FIG. 2 shows a cross-section along the section line 2-2 drawn in FIG. 1,

3 shows an illustration of an electronic matrix system,

Fig. 4- is a schematic fluid circuit that incorporates the invention Reflects main features,

5 shows the schematic representation of a typical electronic Driver or control stage with a piezoelectric Element is electrically connected,

Fig. 6 shows a color nozzle device with a linear arrangement of the Dye nozzles, under supervision,

Fig. 7 shows the device shown in Fig. 6 from below,

FIG. 8 shows a cross section in the section line 7-7 drawn in FIG. 6,

9 shows a modification of the fluid circuit shown in FIG.

10 shows a modification of the fluid circuit shown in FIG. 9,

11 shows a modification of the paint nozzle device shown in FIG. 1, in which the main features according to the invention are used,

FIG. 12 shows a further modification of the one shown in FIG Paint nozzle device in which the main features of the. Invention can be used,

Fig.1J shows a cross section of a paint nozzle arrangement, the inventive Represents principles according to a modified embodiment of FIG. 4,

14 shows a cross section through a modified embodiment of the paint nozzle arrangement shown in Fig. 13,

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Fig. 15 in plan view ^ and partially broken away a paint nozzle arrangement, which the principles according to the invention in a different system than that in FIGS. 1 to 14 the illustrated execution sforaen reproduces,

FIG. 16 shows a cross section along that shown in FIG Section line 16-16 and

FIG. 17 is a schematic fluid circuit of that shown in FIG Execution farm.

In Fig. 1 a part 10 of a dye nozzle housing device is shown partly in broken away representation, which reproduces the basic principles of the invention. In part 10, two pressure chambers or force converter chambers Xa and Ya are formed. The fluid or liquid pressure channels 12 and 14 lead from the chambers Xa and Ya to a supply channel 16 for the liquid paint, where the three channels meet or intersect. The supply channel 16 for the liquid paint is connected to an opening -18, which in turn is connected via a line 20 to a paint supply container 22, which is arranged at a distance from the housing and represents a closed, flexible bag or sack. At the intersection of the channels there is also an outlet opening 24- through which ink droplets -26 are pushed out onto a copy medium.

As shown in FIG. 2, the chambers and channels are defined by a flat, flexible sheet 28 which is attached to part 10 is sealed. The force transducer or pressure chambers Xa, Ya are with the exception of the channels 12 and 14, with which they are in Are connected, sealed fluid-tight. The pressure chambers and channels 12, 14 and 16 are completely filled with liquid paint. A piezoelectric ceramic element 30 is between zv / ei electrodes 32 and 34 arranged and fixed, the Electrode 32 is connected to layer 28, so that thereby also the piezoelectric element 30 with the electrode 32 comes in contact. The piezoelectric element 30 is during des- manufacturing process has been polarized and pulls in a plane that is parallel to the plane of the flexible layer

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28 is when a voltage is applied across conductors 32 and 3 ^. The contraction of the piezoelectric member 30 causes the flexible layer 28 deforms or bulges inwardly, so that the volume of the corresponding chamber is reduced and a pressure is exerted on the liquid paint contained therein. The parts 10 and 28 of the housing can be made of glass or plastic exist.

When the piezoelectric element of either pressure chamber Xa or Ya is actuated, a fluid pressure pulse occurs in the corresponding channel 12 or 14, so that paint is displaced along that channel. The channels 12 and 14 are angularly arranged with respect to the opening 24, and the flow resistance for the liquid flow in the channel 16 with respect to the flow resistance for the flow liquid in the opening 24 is selected and the size and duration of the pressure exerted on the pressure chambers Xa, Ya The pressure pulses are designed or selected in such a way that the ink stream pressed out of only one channel at a certain point in time passes completely past the opening 24 and shifts the color in the ink feed channel 16, whereby the color in the opening 24 is not so strongly influenced, that a droplet could be forced out through the opening 24. The opening 24 with respect to the intersection of the channels chosen 'positionally so, and the size and duration of the pressure applied to the pressure chambers Xa, Ya Druckimp-ulses selected such that the Flüssigkeitsstoss- or i _m _ pulse vectors in the channels 12 and 14 on the Axis of the opening 24 lie. When the piezoelectric elements of the two pressure chambers Xa, Ya are actuated in such a way that the pressure impulses generated by the respective force transducers or pressure chambers occur simultaneously from the interface of the channels 12, 14 to the opening 24, a droplet of paint 26 is pressed out of the opening 24. Of course, it is not necessary that the peaks of the pressure pulses generated by the two pressure chambers occur simultaneously between the intersection of the channels 12 and 14 and the opening 24, but at least the pressure pulses must overlap at this point. In the present embodiment and

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The illustration is the opening of each pressure chamber hydraulically seen equidistant and the piezoelectric elements of both pressure chambers are simultaneously or in Coincidence excited or triggered.

Since the pressure chambers, with the exception of the channels 12 and 14 communicating with them, are sealed in a fluid-tight manner at the end of a pressure pulse, ink is drawn into the channel 12 or 14 from which ink had previously been pressed out.

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If a pulse occurs in only one of the channels 12, 14 then most of the color squeezed out of it will be in the Duct sucked back, the missing color being in the duct is sucked in, is provided by the supply channel 16. When a pulse occurs in both channels 12, 14 at the same time and thereby a droplet of paint is pressed out of the opening 2'I- , then after the end of the impulse color will be from the supply channel 16 sucked into both channels 12, 14-. Which are in The ink located in the pressure chambers Xa, Xa and the main part of the ink contained in the channels 12, 14 therefore always remains in it and acts, so to speak, only as a mechanical pressure transmission or mechanical piston when squeezing out ink droplets through the opening 24, v / ob ei, the ink pressed out of the opening 24 in the form of ink droplets is replenished from the container 22 will.'

The basic principle described above is used in particular in a nozzle arrangement in which a large number of nozzles in a small space or a dense linear nozzle arrangement is used. This will become much clearer from the description below. In electrical engineering, it is generally known that independent stimulators or exciters are required to bring about a stimulation or stimulation of a device or a device or element and if a lateral order or succession is possible, the number of necessary exciters is only 2 times the square root of the number of stimulated bodies. For example, only 120 stimulators are required for 3600 devices to be excited and only 128 stimulators are required for 4096 devices to be excited. This principle is used when the stimulated or excited devices are present in a matrix arrangement, as shown in FIG. 3. Several electrical stimulators or input control elements or exciter parts X ^, X ₂ and X ^ are on one "X" coordinate and several electrical stimulators or exciter parts X ^ ,, X ₀ and X ^ are on the other, the "X" coordinate arranged. The six stimulators or exciter parts are electrically with

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nine intersection points connected, the intersection points the devices to be controlled X ^, Y ^; 'X ^ Y ₂ ; X ^ Y ^ j ^ 2 ^Y i * X ₂ , Y ₂ ; X ₂ , Y ₇ ;, X ₇ , Y ^; X ^, Y ₂ and X ₇ , Y ^ are. If only one stimulator is activated or comes into operation, none of the devices that are stimulated or to be activated are triggered or activated. If, however, two stimulators are put into operation at different coordinates, one stimulated device is actuated. For example, the device to be excited X ^, Y _{2 is} actuated when the stimulators or exciter parts Xy, and Y _{2 are} actuated or controlled.

4 shows a fluid circuit in which the basic principles described above are applied to an arrangement with nine color nozzles 40, 42, 44, 46, 48, 50, 52, 54 and 56, each of these color nozzles having two pressure channels 12, 14 , a paint supply channel 16 and an outlet opening 24. Six electrical input control elements or exciter parts Xxj, X ₂ , X ₇ ^, Y ^, Y ₂ and Y ^ are electrical with a piezoelectric element 30 of the pressure chambers X, respectively. X _K , X ₀ ,

Y. Y, or Y via corresponding electrical lines 58, a D c

60, 62, 64, 66 and 68 connected.

In Fig. 5, a piezoelectric element 30 is shown, the is connected to a typical electronic driver stage or a typical electronic exciter part that consists of a ÜIPN transistor operating in an emitter follower circuit exists and depending on a positive pulse-shaped input signal occurring at the base of the transistor in a brought non-conductive state or a saturation state will. All electronic excitation parts are in the same way with the corresponding piezoelectric elements, respectively electrically connected.

In Fig. 4, a line 70 connects the pressure chamber Xa the pressure inlet openings 12 of the nozzles 40, 46 and 52, a line 72 the pressure chamber X-, with the pressure inlet openings 12

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of nozzles 42, 48 and 54, line 74 the pressure chamber X with the pressure inlet openings 12 of nozzles 44, 50 and 56 »line 76 the pressure chamber Ya with the pressure inlet openings 14 of nozzles 40, 42 and 44, line 78 the pressure chamber Tb with the pressure inlet openings 14 of the nozzles 46, 48 and 50 and the line 80 the pressure chamber Yc with the pressure inlet openings 14 of the nozzles 52, 54 and 56. The pressure chambers, lines and pressure inlet openings, as well as the pulse duration and the pulse value are selected so that the hydraulic properties are equal to each other at each ear nozzle. Since an opening, from a hydraulic point of view, can also be unevenly spaced apart from the two pressure chambers or force transducers with which the opening is connected, the force transducers or pressure chambers can in practical cases also be excited or controlled sequentially or out of phase with one another, see above that the pressure pulses generated by the force transducer or pressure chambers occur simultaneously in the section between the point of intersection of the pressure inlet channels 12, 14 and the opening 24. In the following table is indicated that dispense nozzle droplets, ^T \\ hen certain pathogens parts triggered or be triggered:

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Electronic exciter parts controlled together

Bush from which droplets are squeezed out

X ₁ , ^Y 1 X ₁ , ^Υ 2 X ₁ , ^γ ₃ X ₂ , ^Υ 1 X ₂ , ^Υ 2 X ₂ , ^Υ 3 X ₃ , I ₁ X ₃ , ^Υ 2

₃ , ₃

40 -

46

42

48

54

44

50

56

In Figs. 6 to 8 there is a paint nozzle device with nine

Nozzles according to the scheme shown in FIGS. 4 and 5, the corresponding to those in FIGS. 1, 2, 4 and 5 Parts are provided with the same reference numerals. For the sake of clarity, the fluid channels in FIG. 6 are only for the Pressure chambers Xa, Xb and Xc and in Fig. 7 the fluid channels shown only for the pressure chambers Ya, Yb and Yc. So that Channels can be distinguished from each other in the representation, some channels are dashed and others are again

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points reproduced .. A housing 200 contains pressure chambers and fluid channels accommodated therein. Depending on the practical requirements, the fluid channels can be formed by drilling or casting holes and the pressure chambers can be formed in the housing by milling. In Fig. 8, the main channels 70, 72, 74, 76, 78 and 80 and the respective branch lines that lead from the pressure chambers to the inlet channels, the other main channels and their corresponding branch lines cross at different levels because they do not communicate with one another should stand. All branch lines lie between the wall 202 of the opposite pressure chambers X and Y in the same plane, in order to be able to drill _{the branch channels without cutting the chambers X_ and Y 0.} The paint supply channel 16 for each nozzle branches off from two parallel main supply channels 204, 206. The channel 204 runs in the upper part of the housing 200 over the nozzles and the channel 206 runs in the lower part of the housing 200 over the nozzles. The main supply channels 20 4, 206 are connected at one end within the housing via a transverse channel 208 and the other ends via an outer C-shaped, tubular connecting part 210. A flexible, sack-shaped paint container 22 is connected to the pipe connection part 210 via a line 20.

In the special exemplary embodiments shown in FIGS. 4 to 8, there are exactly as many pressure chambers as there are electronic driver parts in the system. However, if the number of nozzles in a system becomes larger, the number of nozzles connected to a pressure chamber is limited from the hydraulic point of view and therefore it may be necessary that more than one pressure chamber must be connected to an electronic excitation part in order to To generate pressure pulses on the pressure inlet line of several nozzles at the same time. This is shown in FIG. 9, in which an additional arrangement with fifteen nozzles 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128 to that shown in FIG. 4 with nine nozzles is added. This arrangement contains four further electronic exciter parts X ^, Xc, Xg and Y ^, as well as eight further pressure chambers X ,, X, X ", Y ,, Y ₀ , Y,

709826/06 ^ 7 ^{efd a2}

Y ρ and Y-, ρ The line Ι30 connects the pressure chamber X ^ with the pressure input channels 12 of the nozzles 100, 106, 112 and 124, the line 132 the pressure chamber X with the pressure inlet openings 12 of the nozzles 102, 108, 114 and 126, the Line 134, the pressure chamber X _f with the pressure inlet openings 12 of the nozzles 104, 110, 116 and 128, the line 70 with the pressure inlet channel 12 of the nozzle 118, the line 72 the pressure chamber X ^ with the pressure inlet channel 12 of the nozzle 120, the line 74- the pressure chamber X with the pressure inlet channel 12 of the nozzle 122, the line I36 the chamber Yp with the pressure inlet channels 14 of the nozzles 100, 102 and 104, the line 138 the pressure chamber Lp with the pressure inlet channels 14 of the nozzles 106, 108 and 110, the line 140, the chamber Yo ^m i 't the pressure intake ports 14 of the nozzles 112, 114 and 116, the conduit 142, the pressure chamber Ϊ, with the pressure Eini as skanäl en 14 of the nozzles 118, 120 and 122 and the conduit 144, the chamber Y ^ p with the pressure inlet channels 14 of nozzles 124, 126 and 128.

The piezoelectric parts 30 of the chambers X-., X and Xp are connected to the electronic excitation parts X ^, J. _c and X ^ via electrical lines 146, 148 and 150, respectively. The piezoelectric elements 30 of the pressure chambers Y and Y _o are marked with the

a 3.C-

control part Y ^ connected in parallel via electrical lines 64 and 64. The piezoelectric elements 30 of the pressure chambers Y, and Y _KO are via the electrical lines 66 and 66a

D, Did ■

connected in parallel with the exciter part Yp. The piezoelectric elements 30 of the pressure chambers Y and Y, ρ are connected to the exciter part I-, in parallel via the electrical lines 68 and 68a. The piezoelectric elements 30 of the pressure chambers Y- and Υπό are connected to the exciter part T ₁ via the electrical lines 152 and 152. connected in parallel.

The reference symbols of individual parts of the nozzles are for the sake of clarity only added for some nozzles. Of course, these reference symbols apply to all nozzles. The clarity for the sake of the paint supply tank 22 and the connection between the paint nozzles and the feed channel

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-a.

16 not shown, but they correspond to that in E ¹ Ig. 4 arrangement shown.

The pressure chambers, the lines and pressure inlet channels, as well as the pulse duration and the pulse size or amplitude are like this chosen that the hydraulic properties for all JTarb nozzles are the same. The table below shows which nozzles emit droplets when certain pathogens be excited or controlled.

Jointly controlled nozzle from which droplets are pressed out of electronic exciter parts

X ₁ , ^X 3 Xg, *1 Xg, ^X 2 Xg, ^J 3 2 ' "V X ₅ , "V" . X ₅ , ^Y 2 X ₅ , ^Y 5 X ₅ , ^Y 4 X ₄ , ^Y 1 X ₄ , Y ₂ Xzp V X ₅ , ^Y 1 X ₅ , ^Y 2 X ₅ , ^Y 3

46 52 118 42 48

54

120

44

'56 122 • 100 106 112 124 102 108 114

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Jointly controlled nozzle from which droplets are pressed out of electronic exciter parts

X ^ ,. X ₄ 126

X ₆ , X ₁ 104

X ₆ , Y ₂ ¹¹ °

X ₆ , T ₅ ■ 116

X ₆ , Y ₄ . 128

The schematic arrangement shown in FIG. 9 shows multiple pressure chambers which are triggered or controlled by a single electronic exciter part on the "Y" coordinate. In FIG. 10, multiple pressure chambers have been added to the scheme shown in FIG. The pressure chambers X _& 2 » ^X b2 ' ^X c2' ^X d2 'X _e 2 and X _f 2 have been added to the schematic arrangement shown in FIG. 9 and the piezoelectric elements JQ of the respective pressure chambers are each electrical with one of the electronic excitation parts X ^ , X2, X ^, X ₄ , X ₁ - and X _{6 are connected} in electrical lines 58a, 60a, 62a, 146a, 148a, respectively. The channel 160 connects the pressure chamber X

the nozzles 52 and 118, the channel 162 connects the pressure chamber X ^ 2 ^m it to the nozzles 54 and 120, the channel 164 connects the pressure chamber X ^m i 't the nozzles 56 and 122, the channel 166 verbin det the pressure chamber X ^ ^w ith the nozzles 112 and 124, the channel 168 connects the pressure chamber Xp with the nozzles 114 and 126 and the channel 170 connects the pressure chamber X ^ ₂ with the nozzles 116 and 128. The same nozzles push when the same electronic excitation parts are excited Droplets as indicated in the previous table for FIG.

In the previous two exemplary embodiments, 14 and 20 pressure chambers are used for 24 nozzles. This just became therefore shown to show how additional chambers are

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can be used in the arrangement or in the system. the Number of print cartridges proportional to the nozzles eats in one However, the system is much smaller and uses a large number of nozzles for high speed printing will. For example, in a system where about 200 nozzles per 2.54 cm or a total of about 1600 nozzles per 8 inch lead, about 80 electronic exciter stages, and about 120 to 400 pressure chambers uses v / earth. In a system where about 450 Nozzles per 2.54 cm or a total of approximately J600 nozzles on one Straight lines of 20.32 cm (8 inches) can be used, about 120 electronic excitation levels and about 180 to 800 pressure chambers be provided.

Based on the systems described above, it can easily be seen that the small number of electronic Exciter parts and pressure chambers can save considerable costs. Apart from the considerably lower costs, the systems according to the invention due to the fact that essential fewer pressure chambers than nozzles are used, the very important advantage being that the nozzles are closer and closer together can be arranged than in a system where the number of pressure chambers and nozzles is the same. if the same number of pressure chambers as nozzles are used, the distance between the pressure chambers is determined by the length of the channel hydraulically limited between the pressure chamber and the associated nozzle, so that the distance between the nozzles or the Possibility of adjusting the distance between the nozzles according to the space available in practice for the pressure chambers required is limited. An additional advantage of the systems with fewer pressure chambers is that the pressure chambers can be made larger. This allows the systems in terms of the construction of the chamber and the attachment or formation of the membrane layer 28, to which .the piezoelectric element is attached, lighter produced and in particular also easier to assemble. For a very small pressure chamber, a very thin one Membrane layer required in order to allow a given deflection for a required, specific pressure pulse.

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lichen. In connection with a larger pressure chamber However, a thicker down layer can be used for a required, given pressure pulse to achieve the required deflection, so that in the present invention Thicker membranes 28 can be used, which are easier to manufacture, cheaper, more durable and easier to use other parts of the system can be put together.

The Parbdüsen arrangement shown in Fig. 1 contains a fluid rectifier channel 16 (fluid rectifier passage) which is in communication with the supply container 22 and creates a fluid junction between the outlet opening 24 and the connection point of the channels 12 and 14 in order to be safe. Make sure that the channels are completely filled with fluid, v / or the formation of air bubbles or air inclusions is prevented. However, there may also be paint nozzles in which such a rectifier is not used. However, the basic principles of the present invention are also applicable to these paint nozzles. FIGS. 11 and 12 show two such paint nozzle devices which can also be used in the systems shown in FIGS. 4, 9 and 10. In Fig. 11, the parts corresponding to those of Fig. 1 are given the same reference numerals with an "a" added as a suffix only. The pressure chambers Xa and Ya protrude at their rear ends, respectively. one of the branch lines 202 and 204 - with a fluid supply line 200 in connection. Between the junction of the outlet channels 12a and 14-a and an opening 207 there is a drain line 206 which is connected to openings 208 and 210, which in turn connect the drain line 206 to an outlet container (not shown). Menisci of the liquid paint normally form in both outlet channels 12a and 14-a. In this special case, the opening 207 does not act as an exit opening, but merely as an oversized hole in a collecting screen in order to allow the droplets to pass through the screen. Independent actuation of the pressure chamber X _o a creates a dye jet

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printed from the outlet channel 12a, which completely bypasses the opening 207 and then passes along the drainage line 206 via the opening 210 into the discharge container. Correspondingly, when the pressure chamber Y _& a is operated independently, a jet of paint is pressed out of the outlet channel 14a, which also completely bypasses the opening 207 and then flows via the drainage line 206 and the opening 208 into the discharge container. With simultaneous actuation of the pressure cans X _& a

and Y_a meet those out of the outlet channels 12a and 14a

squeezed color rays together, where the sum of the liquid-s-momentum vector acts to direct the color jets onto opening 207 and as droplets 212 out of it step out.

In FIG. 12, the parts which correspond to those in FIG. 1 are provided with the same reference numerals, with only a "b" added as an index. This guide shape shown in FIG. 12 corresponds to the embodiment shown in FIG. 11, the intersection of the outlet channels 12b and 14b, the drain line 300, the outlet container openings 302 and 304 and the outlet opening 305 serving the same purpose and the same Have a relationship and assignment to one another so that a droplet 307 is only pressed out of the opening 305 when both chambers XJo and Yb are pressed at the same time. In this embodiment, the outlet channels 12b and 14b are connected via a corresponding branch line 306, 308 to a supply line 310, which in turn is connected to the paint supply container 22b via an opening 18b and a line 20b.

In the embodiments described above, the rays that emerged from the channels 12, 14, 12a, 14a, 12b, 14b, right at the outlet opening 24 or openings 207 and 305 over when the pressure chambers are independent of each other were pressed. The size of the pressure pulse exerted on the pressure chamber can, however, also be selected so that a either of the jet pressed out of one of the channels 12, 14

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is partially or wholly directed towards the opening, but without sufficient momentum so that no droplet emerges from the opening The pressure pulse should be chosen so that the kinetic energy of the combined, exiting the ducts The jet is sufficient to force a droplet through the exit openings 24 or openings 207 and 505.

The coincidence color nozzle principle can also be used in other ways than vector summation. A droplet can be forced out of an opening by the resulting fluid displacement and the fluid velocity if the pressure pulse generated by the pressure chambers or force transducer chambers occurs simultaneously at the opening. This principle is shown in FIG. The parts that correspond to the parts of the embodiment described above are provided with the same reference numerals, with only a "c'-i" being added to these reference numerals cylindrical pressure chambers X _o c and Yc are in communication. The channels 414 and aa

416 meet at opening 412. This point is the only connection between the channels. Fluid refill channels 417 and 418 direct fluid from a container (not shown) into the respective pressure chambers Xc and Y _r c.

EL oL

The size and duration of each piezoelectric element

The voltage applied to pressure chamber Xc and Yc 'is such that a a

the fluid displacement and the fluid velocity caused by the respective pressure pulses produced by the pressure chambers caused in the respective fluid pressure channels 414 or 416 is not sufficient to push a droplet out of the opening 412. By a combined fluid displacement and a combined fluid velocity due to the pressure pulse generated by the pressure chamber Xc and due to the

-el

in the pressure chamber Y c generated pressure pulse is caused, these pressure pulses simultaneously at the opening 412 occur, the opening 412 becomes a droplet pushed out.

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Pig. 14 shows a. Modification of the embodiment shown in FIG. The parts that correspond to the parts previously described Corresponding embodiments are again provided with the same reference numerals in FIG. 14, only here a "d" has been added. In this embodiment, two fluid pressure channels 420 and 422 each lead from an associated one Pressure chamber X d and Y d to an outlet channel 424, which in turn ends at the droplet outlet opening 426. The big and Duration of the voltage applied to the piezoelectric element of the respective pressure chamber X d and T d eats such that the Fluid displacement and fluid velocity resolved by one in the respective fluid pressure channel 420 and 422 Pressure impulse is generated, is not sufficient in itself, squeeze a drop from opening 426. With a combined Fluid displacement and fluid velocity due to the pressure pulse generated by the pressure chamber Xd

Cl

and is caused on the basis of the _{pressure pulse generated by the pressure chamber Y Q} d, the pressure pulses occurring simultaneously at the opening 426, but leads to a droplet being forced out of the opening 426.

An arrangement or a summary of the ■ individual in the 13 or 14 shown coincidence color nozzles can be applied to the same Kind be combined in a system, like the nozzles in the embodiments described above, for example as shown in FIGS. 4, 6-8, 9 and 10. A liquid supply line can also be installed in the vicinity of the opening 426 or a liquid supply channel and a chamber can be provided which correspond to the liquid supply line 16, instead of having the liquid supply lines or channels 417d, 418d in FIG. 14 directly are in communication with the pressure chambers, as shown in FIG.

The print transmission means in the above-described matrix address system must be based on the so-called Time sharing operation or the time nesting principle

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addressed. ' Thereby, the pressure converting operation frequency becomes or actuation frequency 'and thus also the printing speed the color nozzle arrangement is limited. It has been found that the principle described above with the Coincidence color nozzles also used in nozzle arrangements can use an addressable pressure transducer for each paint nozzle. The use of the coincidence nozzle principle in such an arrangement leads to a

smaller space or area for the pressure transducers to be used needed per nozzle, if you can do this with the size a pressure transducer in an arrangement that does not use the coincidence nozzle principle. When the pressure transducers can hardly need a smaller one per nozzle, more pressure transducers can be housed in a given space.

. be brought, so that the construction of a dense arrangement with closely spaced nozzles is possible if there is an addressable pressure transducer for each nozzle.

'The principle to be described does not have to be based on the time-sharing principle be operated, so that the entire matrix address system has a greater operating speed or Response speed possesses. This principle is shown in FIGS. 15 and 16. A glass or plastic case "is made of two parts 512, 514-, which by screws 516 together are attached and a pressure seal is effected between the housing parts. Housing parts 512 and 514 each have nine matching channels, the parallel fluid pressure channels or lines 518, -520, 522, 524, 526, 528, 530, 532 and 534- form. In the housing part 512 there is a rectangular main fluid pressure chamber 536, which extends across the nine channels and with the pressure lines 518, 520, 522, 524, 526, 528, 530, 532 and 534- via channels 538, 540, 542, 544-, 546, 548, 550, 552 or 554-. Is in connection. The chamber 536 is attached to the housing part 512 by a compliant layer 556 completed. A strip-shaped one piezoelectric ceramic element 558 is located "zivischen two electrodes 560 and 562 and is attached between these electrodes. The electrode 560 is attached to the layer 556

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so that in this way the piezoelectric element is also attached to or connected to layer 556. That strip-shaped, piezoelectric element 558 is polarized during the manufacturing process so that it is in a Plane parallel to the plane of the flexible layer 556 in the direction the shorter side contracts when the element is applied a voltage on conductors 560 and 562 is excited. By contracting the piezoelectric element 558 bulges .she flexible layer 556 inwards and reduces the volume of the chamber 556, so that at the same time a Pressure is applied to the liquid in all nine pressure channels.

In the housing part 512 there are also nine further drop • squeeze-out pressure chambers 564, 566, 568, 570, 572, 5JM-, 576, 578 and 580, which have corresponding. Channels 582, 584, 586, 588, 590, 592, 594, 596 and 598 are connected to the pressure channels 518, 520, 522, 524, 526, 528, 530, 532 or 534. At the front ends of the pressure channels 518, 520, 522, 524, 526, 28, 530, 532 and 534 there are droplet outlet openings 600, 602, 604, 606, 608, 610, 612, 614 and 616, respectively. A flexible seal 618 stretches extends through the channels and is attached to the top of the side walls dividing the chambers and to two pads 622 formed on top of the front and rear walls of each chamber. A strip-shaped piezoelectric ceramic element 624 is provided for each chamber and is attached and secured between two electrodes 626 and 628, the electrode 626 of the respective piezoelectric element being connected to the flexible layer 618. The piezoelectric element 624 is likewise polarized during manufacture in such a way that it contracts in a plane parallel to the plane of the flexible layer 618 when it is excited by applying a voltage to the conductors 626 and 628. The contraction of a certain piezoelectric element leads to an inward curvature of the flexible layer 618, so that the volume of the corresponding chamber is reduced and pressure is therefore exerted on the liquid paint located in the outer chamber. A liquid supply

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line channel 629 is with both the pressure chamber 536 as also via a line 630 with a paint supply tank 632 in connection, which is arranged away from the housing and consists of a tight, resilient bag or sack.

Fig. 17 shows a schematic fluid circuit. An electronic control or excitation stage 634 is connected to the piezoelectric element of the main pressure chamber 536 and the electronic control stages 636, 638, 640, 642, 644, 646, 648, 650 and 652 are connected to the piezoelectric elements of the pressure chambers 564, 566, 568, 570, 572, 574, 576, 578 and 580, respectively. The magnitude and duration of the voltage that is applied to the piezoelectric element 558 for the main pressure chamber is selected so that the fluid displacement and the fluid speed that causes a pressure pulse in the nine fluid pressure channels connected to the main pressure chamber is just below one Is the threshold value that is required for a droplet to be pressed out of one of the openings. The magnitude and duration of the voltage applied to the piezoelectric element 624 for each of the drop ejection pressure chambers is such that the fluid displacement and the fluid velocity triggered by a pressure pulse generated in the respective pressure channels is significantly smaller than the fluid displacement and the. Fluid velocity generated by the main pressure chamber. The magnitude of the composite E ¹ I uidver displacement and fluid velocity, which is caused by the pressure pulse generated by the main pressure chamber and the pressure pulse generated by one of the droplet pressure chambers, when the fluid displacement and the fluid velocity occur simultaneously at the opening, this magnitude is however at the respective opening above the threshold value mentioned, so that a drop is pressed out of the opening.

In this system, the activation frequency or frequency is determined by the frequency of the individual drop ejection pressure chambers controlled. As the main fluid displacement and velocity can be generated by the main pressure chamber 536, the

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Droplet ejection chamber can be made much smaller than in the case when these the total Pl uidv er shift and Fluid velocity would have to generate to squeeze out a drop. It turned out that the size of one Pressure transducer or a pressure chamber in v / es en ti less Mass as increases linearly with an increasing number of nozzles operated by the pressure transducer. The summarized Area of nine drop squeezers and the main pressure chamber is smaller than the combined area of nine separate pressure chambers for operating nine separate ones Nozzles in a conventional system in which the coincidence nozzle principle is not applied. When the number of nozzles is very large, then this difference in the required area or space required by the Pressure chambers is taken, very essential and significant. The smaller the area, or the area, is that of the pressure chambers is stressed, the closer and more densely the nozzles can be arranged and accommodated in a nozzle arrangement will. Therefore, with the coincidence nozzle system, there is a dense, narrow nozzle arrangement with a high drop ejection frequency or frequency possible.

If desired, a liquid feed channel and a liquid supply chamber may be in the multi-nozzle assembly of the system of Fig. ¹ provided V] and used. A main pressure chamber could be in communication with one inlet line or channel (e.g. 12, 12a, 12b) of each nozzle in a group of nozzles, and a gob squeeze pressure chamber would communicate with the other inlet line or channel (e.g. 14 * 14a, 14b ) of the corresponding nozzle of the same nozzle group. The angle at which the inlet channels intersect could be changed so that the droplet expressing pressure chamber would only have to generate a small portion of the fluid lap pulse vector required to express a droplet from orifice 24 or through outlet orifice 207 or 305 . The axis of the opening 24 and the exit openings

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<- SUN

207 and 305 would 'with the sum vector of the liquid momentum vectors coincide in the two inlet openings.

The coincidence nozzle shown in Fig. 13 can also be in a Multiple arrangements of the system shown in Fig. 17 can be used. A main pressure chamber is then available with an inlet line or an inlet channel, for example the channel 4-14-, each nozzle of a group of nozzles in connection, and one The droplet squeezing chamber is then connected to the other inlet line or the other inlet channel, for example channel 4-16, of the respective nozzle of the same group of nozzles in Link.

If desired, a liquid supply line can also be used or a liquid supply channel and a liquid supply chamber near the openings 600, 602, 604-, 606, 608, 610, 612, 614- and 616 corresponding to the liquid ' supply line or the liquid supply channel 16 in Fig. 4- may be provided instead of the liquid supply channel to connect directly to the main pressure chamber 536, such as this is shown in FIG.

Of course, other than piezoelectric crystals can also be used as displacement or displacement devices Components and elements used in connection with the present invention. For example, electromagnetic or magnetostrictive components are used.

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Empty soap

Claims (1)

Claims Multiple paint nozzle device, marked by at least two paint nozzles, each with an outlet opening (24, 4-12, 426, 608), a first fluid chamber (X _a ), a first channel (12, 414) that connects the first fluid chamber (X _& ) connects to the opening (24, 412, 426, 603) of one of the nozzles, a second fluid chamber (Y ₀ ), a egg second channel (14, 416) connecting the second fluid channel (Y _a ) to each of the openings (24, 412, 426, 608) of the nozzles, in the first and second fluid channels (X _a , I _a ) and in each Channel (12, 14, 414, 416) contains a liquid, devices (50, 32, 34) which, independently of one another, reduce the volume of the respective first and second fluid chambers (Z _n , Y ") and thereby egg el Generate pressure pulses, and facilities that operate simultaneously only at the opening (24, 412, 426, 608) of one nozzle the pressure pulse generated by the first chamber (X ~) and the trigger the pressure pulse generated by the second chamber (Y "), to express a drop of liquid from this opening (24, 412, 426, 608). Device according to claim 1, characterized in that the last-mentioned devices devices (e.g. 518). Included to connect the first and second channels (12, 14, 414, 416, 538, 582) close together at one of the paint nozzles associate. 3. Device according to claim 1 and 2, characterized in that that each paint nozzle has first and second fluid inlet channels (e.g. 70, 76; 526, 590) that connect with one another in ■ are in communication, the first channel (12, 414) with the first inlet channel of the one paint nozzle (e.g. 40) and the second channel (14, 416) communicates with the second inlet channel (76) of each paint nozzle (e.g. 40, 42, 44). 709826 / 06B7 or.g.nal - aer.- • I- 4. Device according to one of claims 1 to 3i characterized by a third fluid chamber (z. B. X ^), a third channel (z. B. 72), which the third chamber (X _b ) with the opening (24) of the other paint nozzles (e.g. 42) connects devices (30, 32, 34) which reduce the volume of the third chamber (X _1. ) independently of the first and second fluid chambers (X_, Y ") and thereby generate pressure pulses 3. CL testify, as well as facilities to simultaneously only at the opening (24) of the other paint nozzle (42) through the third chamber (X ^) generated and by the second Chamber (Y_) to trigger pressure pulse generated in order to push a drop of liquid (26) out of this opening (24). 5. Device according to one of claims 1 to 4, characterized in that that each paint nozzle has first and second fluid inlet channels (e.g., 70, 76; 526, 590) that communicate with one another are in communication, wherein the first channel (12, 414) with the first inlet channel of the one paint nozzle (z. B. 40) and the second channel (14, 416) with the second inlet channel (76) of each paint nozzle (e.g. 40, 42, 44) communicates, and the third channel (e.g. 72) d with the first inlet channel (ζ. B. 7θ) of the other paint nozzle is in connection. 6. Device according to one of claims 1 to 5 ₅ characterized by a liquid supply source (22, 632), wherein the first and second inlet channels of each nozzle are channels (12, 14) which intersect, fluid supply channels (16, 18, 20) with the "source (22, 632) and intersect the intersection of the first and second inlet channels (12, 14), the fluid supply channels (16, 18, 20) adjoin the outlet opening (24), and the interface, the supply channels ( 16, 18, 20) and the outlet opening (24) are completely filled with liquid. 7. Device according to one of claims 1 to 6, characterized in that that each paint nozzle has a pressure channel (424 ') 709826/0657 which ends with an opening (426) at one end and the first and second inlet channels (420, 422) are in communication with the pressure channel (424). 8. Device according to one of claims 1 to 7> characterized in that the first and second inlet ducts (e.g. 420, 422; 546, 590) with the respective pressure channel (e.g. 424, 526). communicates at points that, hydraulically seen, are spaced at different distances from the respective opening (e.g. 426, 608). 9. The device according to claim 4, characterized in that the opening (24) of the one paint nozzle (e.g. 40) is the only one Opening is that with the first fluid chamber (X_) in connection and that the opening (24) of the other paint nozzle (z. B. 42) is the only opening (24) that is connected to the third fluid chamber (Yv) is in communication. 10. The device according to claim 9i, characterized in that each paint nozzle first and second fluid inlet ducts (e.g. 70, 76; 526, 590) which are in communication with each other, the first channel (12, 414) with the first Inlet channel of the one paint nozzle (e.g. 40) and the second channel (14, 416) with the second inlet channel (76) of each paint nozzle (e.g. 40, 42, 44) communicates, and the third channel (e.g. 72) with the first inlet channel (e.g. 70) of the other paint nozzle is in communication. 11. Device according to one of claims 1 to 10, characterized in that that the first and second inlet ducts of each nozzle are ducts (12, 14, 414, 416), which are located at a specific Cut the opening (e.g. 24, 426). 12. The apparatus of claim 10, characterized by a liquid supply source (22, 632), wherein the first and second inlet channels of each nozzle are channels (12, 14) which intersect, fluid supply channels (16, 18, 20 ') 709826/0657 with the source - (22, 632) and the 'Intersection of the first and second inlet channels (12, 14) intersect the fluid supply channels (16, 18, 20) to the Adjacent outlet opening (24), and the interface, the .. 'supply channels (16, 18, 20) and the outlet opening (24) are completely filled with liquid. 1Y. Device according to claim 10, characterized in that each paint nozzle has a pressure channel (424) ending with an opening (426) at one end and the first and second inlet channel (420, 422) is in communication with the pressure channel (424). 14. The device according to claim 13, characterized in that . '' the first and second inlet port (e.g. 420, 422; 546, 590) is connected to the respective pressure channel (e.g. 424, 526) at points which, from a hydraulic point of view, are different far from the respective opening (e.g. 426, 608) are. 15. Multiple paint nozzle device, characterized by at least two groups of paint nozzles (40-56) each with an outlet opening (24), a first fluid chamber (e.g. X _& ), a first channel (e.g. 12, 70, 72, 74), which the first fluid chamber (X ") with each opening (24) of the nozzles one • el Nozzle group (e.g. 40, 46, 52) connects ₍ a second fluid chamber (e.g. Y), a second channel (e.g. 76) that connects the second fluid chamber (Y _a ) with each opening (24 ) connects the nozzles in the other nozzle group (e.g. 40, 42, 44), with liquid being unfolded in the first and second fluid chambers (X, Y) and in each channel (70, 72, 74 or 7.6), and only the opening (24) of the one nozzle (e.g. 40) is common to the nozzles of both nozzle groups, devices (30, 32, 34) which independently of one another the volume of the respective first and second fluid chambers (X_, Y) and thereby generate pressure pulses _r and devices that are only available at the opening (24, 709828/0857 .412, 426, 608), the one nozzle from the first chamber (X) and trigger the pressure pulse generated by the second chamber (Y) to express a drop of liquid from this opening (24, 412, 426, 608). 16. ' Device according to claim 15, characterized in that that the last-mentioned devices contain devices (e.g. 518) to connect the first and second channels (12, 14, 414, 416, 538, 582) to be connected to one another at one of the paint nozzles. 17. The device according to claim 15 or 16, characterized in that each paint nozzle has a 'first and second fluid inlet channel (z. B. 70, 76 »526, 590), which with each other 'are in communication, the first channel (12, 414) with the first inlet channel of each paint nozzle of the one group of paint nozzles and the second channel (14, 416) with the second Inlet channel for each paint nozzle of the other group of nozzles communicates. 18. Multiple paint nozzle device, characterized by several groups of paint nozzles each with an outlet opening (24), a first and a second inlet channel (12, 14; 414, 416) of a first group of fluid chambers ('■' ■ ·> X] ₃ 1 ^x _c ^ 'of a second group of fluid chambers (Y _a > - _ο ι ^ c ^ * with each first group of fluid chambers (X _& , X _{,, X 0} ) via fluid channels (e.g. 70, 72, 74 ) is connected to the first inlet channel (12) of the respective group of nozzles, each chamber of the second group of chambers (Y _Q , Yu, Y_) via fluid channels (e.g. 76, 78, 80) to the second inlet channel ( 14, 416) of a corresponding group of nozzles, the group of nozzles and chambers are hydraulically arranged in such a way that each nozzle of each group, which is in communication with the first group of chambers, - with the other group of nozzles, the communicates with the second group of chambers, is common and no two groups of nozzles comprise more than one common nozzle, 709826/0657 BATH ORIGINAL and wherein there is liquid in the chambers and each channel, and means (30, 32, 3 ² O "let each independently reduce the volume of each of the chambers, thereby exerting a pressure pulse on the liquid therein and in the respective channels , as well as by devices that simultaneously act on the opening of a specific paint nozzle, the pressure pulse generated by the chamber of the first chamber group, which is connected in the first inlet channel of the specific nozzle, and the pressure pulse generated by the chamber of the second chamber group, the connected to the second inlet channel of the particular nozzle., to cause a drop of liquid (26) out of the opening (24) of the specific paint nozzle (Fig. 4). 19. Device according to claim 18, characterized by a liquid supply cell (22, 632), wherein the first and second inlet ducts of each nozzle are ducts (12, 14), which intersect, fluid supply channels (16, 18, 20) communicate with the source (22, 632) and the point of intersection of the first and second inlet channels (12, 14) intersect the fluid supply channels (16, 18, 20) to the outlet port (24) adjoin, and the interface, the supply channels (16, 18, 20) and the outlet opening (24) completely are filled with liquid. ' 20. The device according to claim 18 or 19, characterized in that the axis of the outlet opening (24, 412) with the sum vector the liquid momentum vectors in the first and second channels (12, 14, or 414, 416) coincide. 21. Device according to one of claims 18 to 20, characterized characterized in that the first and second inlet ducts (12, 14; 414, 416) with respect to the outlet opening (24, 412) • are arranged so that if only-one of the chambers is pressurized, the jets of liquid pushed out of this chamber completely bypass the outlet opening (24, 412). 709821/065? 22. Multiple paint nozzle device, characterized by several groups of paint nozzles each having an outlet opening (24), a first and second inlet channel (12, 14;, 414-, 416) of a first "group of fluid chambers (X _& , X ₁₃ , X _ß )? A second group of fluid chambers (Y _a > Yv, ι ^ c ^ 'where each first group of fluid chambers (X _Q , X _K , X.,) via fluid channels (e.g. 70, 72, 74) is connected to the first inlet channel (12) of the respective group of IXisen, each chamber of the second group of chambers (X _& , X ^, Y _c ) via fluid channels. (z. B. 76, 78, 80) with the second inlet channel (14, 416) of a corresponding group is connected of nozzles, the group of nozzles and chambers are arranged hydraulically so that each nozzle of each group is on the first group of 'chambers, with the other group of nozzles which communicates with the second group of chambers, is common and no two groups of nozzles comprise more than one common nozzle, u nd where there is liquid in the chambers and each channel, and where the first group of chambers has at least two subgroups (X _& , X ^, X _c ; X _a 2 'X ^ 2> ^X c2 ^ ^von "has at least two chambers each, devices (30, 32, 34) which simultaneously reduce the volume of the respective chambers in the first subgroup and the volume of each subgroup of chambers independently of one another reduce in order to exert a pressure pulse on the liquid contained in the chambers and in the respective channels, devices (30, 32, 34) which reduce the volume of each remaining chamber independently of one another in order to respond to that contained in these chambers and in the corresponding channels Liquid to exert a pressure pulse, as well as devices that simultaneously on the ■ opening of a certain paint nozzle the pressure that is generated by the chamber of the first chamber group, which is connected in the first inlet channel of the particular nozzle, and the pressure pulse that is generated by the chamber of the second chamber group , which is connected to the second inlet channel of the particular nozzle, cause a liquid drop (26) from the To push out the opening (24) of the specific paint nozzle (Fig. 9). 709826 / 0S57 23. The device according to claim 22, characterized by a Liquid supply source (2.2, 632), the first and second inlet channels of each nozzle are channels (12, 14-) which intersect, fluid supply channels (16, 18, 20) are in communication with the source (22, 632) and the intersection of the first and second inlet channels (12, 14) cut, the fluid supply channels (16, 18, 20) adjoin the outlet opening (24), and the interface that Supply channels (16, 18, 20) and the. Outlet opening (24) are completely filled with liquid. 24 .. Device according to claim 22 or 23, characterized in that that the axis of the outlet opening (24, 412) /. ■ with the sum vector of the liquid momentum vectors in the first and second channel. (12, 14 or 414, 416) together. falls. 25. Device according to one of claims 22 to 24, characterized characterized in that the first and second inlet ducts (12, 14; 414, 416) with respect to the outlet opening (24, 412) are arranged so that if only one of the chambers is pressurized, those will be forced out of that chamber Liquid jets completely at the outlet opening (24, 412) go by. 26. Multiple paint nozzle device, characterized by several groups of paint nozzles each with an outlet opening (24), a first and second inlet channel (12, 14; 414, 416) of a first group of fluid chambers (Χ _α , X,, Χ.), a second group of fluid chambers (Y _Q , Y-., Y "), DC el D C each first group of fluid chambers (X, X,, X) being connected to the first inlet channel (12) of the respective group of nozzles via fluid channels (e.g. 70, 72, 74), each chamber of the second group of chambers ( Y ₀ , Y-_, Y_) is connected via fluid channels (e.g. 76, 78, 80) to the second inlet channel (14, 416) of a corresponding group of nozzles, .the group of nozzles and chambers are arranged hydraulically that every nozzle of every group that is in 709826/0657 - yf-Λ. which communicates with the first group of chambers is common to the other group of nozzles, which communicates with the second group of chambers, and no two groups of nozzles comprise more than one common nozzle, and in which the chambers and each channel is liquid, and the first group of chambers ( ^x _a ~ ^X f) and the second group of chambers (Y _a -Y ^> ^ _a 2 ~ ^ d2 ^ each have at least two subgroups (X _a ~ X _c and X ^ -Xf or Y _& -Y ^ and YpO '- ^ d?) ^M ^ i) ^ewe il ^s comprises at least two' chambers, devices (30, 32, 3 * 0 »which the volume of the respective chambers in the first subgroup, simultaneously and reduce the volume of each subgroup of chambers independently of one another in order to exert a pressure pulse on the liquid contained in the chambers and in the corrugated channels, devices (30, 32, 3 ^ 0 »which the volume of each remaining chamber independently reduce from each other in order to access those in these chambers and in the corresponding • Liquid contained in the n channels to exert a pressure pulse, as well as devices that simultaneously act on the opening of a specific paint nozzle dec pressure generated by the chamber of the first chamber group, which is connected to the first inlet channel of the specific nozzle and the pressure pulse generated by the chamber of the second Chamber group is generated, which is connected to the second inlet channel of the particular nozzle, cause 'to push a liquid drop (26) out of the opening (24) of the particular paint nozzle (Fig. 9) · 27 · Device according to claim 26, characterized by a liquid supply source (22, 6J2), wherein, the first and second inlet ducts of each nozzle are ducts (12, 14), -. which intersect with fluid supply channels (16, 18, 20) communicate with the source (22, 632) and intersect the intersection of the first and second inlet channels (12, 14), the fluid supply channels (16, 18, 20) adjoin the outlet opening (24), and the interface, the supply channels (16, 18, 20) and the outlet opening (24) are completely filled with liquid. 709826/065? 28. Device according to. Claim 26 and 27, characterized in that that the first and second inlet ducts (12, 14; 414, 416) so arranged with respect to the outlet opening (24, 412) are that if only one of the chambers is pressurized, then the jets of liquid forced out of that chamber completely at the outlet opening (24, 412) pass. . 29 · Device according to claim 26 to 28, characterized in that the axis of the outlet opening (24, 412) with the sum vector of the liquid pulse vectors in the first and second channel (12, 14 or 414, -416) coincides. 30. Farbdüsenanordnuiig, characterized by a first and ■ a second fluid chamber (X_, Y _n ), a first channel (12, 414) coming from a first chamber (2 _{a ), a second n} , from . the second chamber (Y ₀ ) coming channel (14, 416), wherein the first and second channels (12, 414 and 14, 416) intersect, an opening (24, 412) at the interface, one of the outlet spaced from the opening (24), the chamber "(X. Y ₀ ) - and each channel (12,. 414 or 14, 416) 3 tbsp . to the opening (24) completely filled with liquid ISt ₁ and devices (30, 32, 3 ² O ■> which reduce the volume of each chamber (X ", Y_) independently of one another and to that contained in the chambers and in the respective channels Liquid exert a pressure pulse so that liquid is thereby forced out of the opening (24, 414), the channels (12, 414; 14, 416), the opening (24, 412) and the outlet being arranged relative to one another in such a way that a liquid droplet (26) is only pressed out through the outlet when the _{pressure pulse generated by the first chamber (X &} ) and that generated by the second ■ Chamber (Y _a ) generated pressure pulse at the opening (24, 412) occur simultaneously. "''' 31. ' Device according to claim 30, characterized in that the axis of the outlet opening (24, 412) with the sum vector the liquid momentum vectors in the first and 709826/065? second channel, (12, 14 or 414, 416) coincides at the interface. J2. ' Device according to claim 30 or 31? characterized by a liquid supply source (22, 632) and liquid supply channels (16, 18, 20, 417, 418, 629, 630), ■ those with the source (22, 632) and directly with each chamber (X, Y ) _v related. 33- Device according to claim .30 or 3I ₁ characterized by a liquid supply source (22, 632) and liquid supply channels (16, 18, 20, 417, 418, 629, 630) which are connected to the source (22 , 632) "and each of the first and second channels (12, 14 or 414, 416) between the point of intersection and the respective chamber (X", Y _Q ) in relation ■ ■ ^ GL el • ..binding. 34 .. Multiple color nozzle device, characterized by at least two nozzles each with an opening (24, 412), a first .Fluidkammer (X _a ), a first channel (12, 414), the from the first chamber (X _& ) to Opening (24, 412) of one of the nozzles leads, a second fluid chamber (Y _a ), a second channel (14, 416) which leads from the second chamber (Y _a ) to the openings (24j 412) of each of the nozzles, wherein the first and second channels (12, 414; 14, 416) intersect at the opening (24, 412) of the one nozzle, a first outlet i spaced apart from the opening (24, 412) of the one nozzle, a second exit i from the opening ( 24, 412) - the outlet at a distance from the other nozzles, the chambers (X ″, Y ₀ ) and each channel (12, 414; 14, 416) leading to the openings (24, 412) being completely with - liquid are filled, and. devices (30, 32, 34-), which independently reduce the volume of each chamber (X ", Y _Q ) and on the a ei contained in the chambers and in the respective channels Liquid exert a pressure pulse, "so that liquid is thereby forced out of the opening (24, 414), wherein the channels (12, 414; 14, .416), the opening (24, 412) and the outlet are arranged relative to one another so 709826 / 06S? that only then 'a liquid droplet (26 _{) is pressed out through the outlet when the pressure pulse generated by the first chamber (X 0} ) and that generated by the second egg Chamber (Y ") generated pressure pulse at the opening of one a Nozzle occurs at the same time. Device according to claim 34, characterized by a third fluid chamber (e.g. Xj ₃ ), a third channel (e.g. 72) which connects the third chamber (X ^) with the opening (24) of the other dyeing nozzle (ζ. B. 42) connects and intersects the second channel (e.g. 14, 416) at this point, with the third chamber (Xi ₃ ) and the third channel. (72) leading to the j opening of the other nozzle are completely filled with liquid,!, And by means (50, 32, 34) the volume of the third chamber (X ₁₃₎ independently of the first and second fluid chamber (e.g. B. X, Y) zoom out to ice cream to exert a pressure pulse on the liquid located in the chamber and in the third channel (72) in order to thereby forcing liquid out of the opening of the other nozzle, v / whether the third channel (z. B. 72) the The opening (24, 412) of the other nozzle and the second outlet are arranged with respect to one another in such a way that a liquid droplet (26) is only then pressed out through the ζ v / ei th outlet when the pressure pulse generated by the third chamber and that generated by the second chamber Pressure pulse at the opening of the other nozzle occur simultaneously. '. · 36. Apparatus according to claim 34 or 35 »characterized in that the opening (24) of the one paint nozzle (z. B. 40) is the only opening that is connected to the. first fluid chamber; (X _a ) communicates and that the opening (24) of the. other paint nozzle (eg 42) is the only opening (24) which is in communication with the third fluid chamber (Yx ₃ ) ¹ '. 37 · Device according to claim 35 characterized in that .that the axis of the outlet opening- (24, 412) with the sum- 709826/0637 vector of the liquid momentum vectors in the first and second channel (12, 14 or 414, 416) coincides at the interface. 38. Apparatus according to claim 36, characterized in that the axis of the outlet opening (24, 412) with the sum vector the liquid momentum vectors in the first and second channels (12, 14, and 414, 416, respectively) at the interface coincides. 39 · Multiple paint nozzle device, characterized by at least one group of paint nozzles (40-56), each with an outlet opening (24), a first fluid chamber (e.g. X_), ^/ a first channel (e.g. . 12, 70, 72, 74), which connects the first fluid chamber (X _& ) with each opening (24) of the nozzles of a nozzle group ( ¹ e.g. 40, 46, 52), a second fluid chamber ( e.g. Y ₀ ), a second channel (e.g. 76) which connects the second fluid chamber (I ₀₁ ) with each opening (24) of the el Connects nozzles in the other nozzle group (e.g. 40, 42, 44), with only one of the nozzles belonging to both groups of nozzles, the first and second channel being on the Cut the opening of one nozzle, a first outlet is spaced from the opening of one nozzle, a second Outlet is spaced from the opening of the other nozzle and the chambers and all channels leading to the openings lead, completely filled with liquid, devices (30, 32, 34) to independently adjust the volume of each To make the chamber smaller and to apply a pressure pulse to the liquid contained in the chambers and in the channels, in order to thereby force liquid out of the respective openings, the channels being the opening of the one The nozzle and the first outlet are arranged with respect to one another in such a way that a liquid droplet (26) passes through the first outlet is only pushed out when the pressure pulse generated by the first chamber and that of the second chamber generated pressure pulse at the opening of one nozzle at the same time appear. 709826/0657 40. Device according to claim 39? characterized in that the axis of the 'outlet opening (24, 412) with the sum vector the liquid pulse vectors in the first and second Channel (12, -14 or 414, 416) coincides at the interface. 41. A method for pressing liquid droplets out of a dye nozzle device, characterized by the following Procedure: Forcing out a droplet of liquid through an outlet from an opening - the paint nozzle is spaced apart by reducing the volume of a fluid chamber so that a pressure pulse is inside it and is generated in the liquid flowing from the fluid / Chamber flows to the opening of the paint nozzle, reducing the volume of a second fluid chamber to one To produce ■ · pressure pulse in this and the liquid flows .from this Fluidkaramer -the to open the paint nozzle, and simultaneously causing the pressure pulse generated by the first chamber and the signal produced by · apr zvreiten chamber Druckitapulses at the opening of the paint nozzle. 42. Method of forcing droplets of color from a Paint nozzle device, characterized by the following . driving steps: reducing the volume of a fluid chamber, in order to have one in it and in the liquid flowing from the pressure chamber to an opening "of the paint nozzle To generate pressure and thereby to force liquid out of the opening without a drop through one of the opening spaced outlet is pressed, reducing the volume of a second fluid chamber, including therein and in the Liquid flowing from this fluid chamber to the opening, thereby generating a pressure pulse, and liquid ί to push out of the opening without a droplet being pushed out through the outlet and push out of a liquid droplet through the exit by simultaneously inducing that generated by the one chamber Pressure pulse and the pressure pulse generated by the second chamber at the opening. ' 709826/0657 43. Method of squeezing paint droplets out of a Nozzle · of a multiple dye nozzle device by the following process steps: squeezing out a droplet of paint through one that is obstructed by an opening - Exit from only one paint nozzle by reducing the Volume of a fluid chamber in order to be in the fluid chamber and in the liquid flowing from the fluid chamber to the opening of the leads a paint nozzle to generate a pressure pulse, shrinking of the volume of a second chamber to be in the, chamber and in the liquid flowing from the chamber to the Opening of one paint nozzle and at least to the opening of a further paint nozzle flows to generate / generate and simultaneously evoke the pressure pulse generated by the first chamber and that of the second Pressure pulse generated at only the opening of the chamber a paint nozzle. 44. Method of squeezing paint droplets out of a Nozzle of a multiple color nozzle device, marked by the following process steps: reducing the volume of a fluid chamber by a pressure pulse in the pressure chamber and in the liquid flowing from the pressure chamber to an opening of a paint nozzle, and thereby To squeeze liquid out of the opening without a Drops through an outlet at a distance from the opening is pushed out, reducing the volume of a second "fluid chamber" by a pressure pulse in the second 'Fluid chamber and in the liquid which is from' the second fluid chamber for opening the one paint nozzle and at least to open another paint nozzle flows, to generate and thereby to press fluid out of the openings without that a drop through this outlet and through one of the opening of the other paint nozzle "objectionable exit is squeezed out, and squeezing out a liquid droplet from the outlet spaced from the opening only the one paint nozzle by simultaneously causing the one produced by the one chamber. Pressure pulse and des pressure pulse generated by the second chamber on the 709826 / 06Ϊ7 Opening of one 3? Arb nozzle. 45. Method of squeezing paint droplets out of a Nozzle of a multiple color nozzle device, marked .. by the following process steps: Forcing out a droplet of paint through one spaced apart from an opening Exit from only one paint nozzle, by reducing the volume of a fluid chamber to be in the fluid chamber and in of the liquid to generate a pressure pulse that passes from a Fluidkaamer to each orifice of a group of Flows paint nozzles, which includes the one .Farbdüse, reducing the volume of a second fluid chamber to create a pressure pulse in "the second fluid chamber and in the liquid flowing from the second fluid chamber to each opening of a different group of paint nozzles flows, • "to which only the one paint nozzle of one group belongs and simultaneous inducing of the pressure pulse generated by the one chamber and that generated by the second chamber Pressure pulse at the opening. 46. A method for squeezing paint droplets out of a nozzle of a multiple paint nozzle device by the following process steps: reducing the volume of a fluid chamber in order to be in the fluid chamber and in the liquid to generate a pressure which flows from the fluid chamber to each opening of a group of paint nozzles in order to thereby squeezing liquid out of the openings without that a drop is pushed out through any outlet spaced from the respective opening, reduce the size the volume of a second fluid chamber in order to generate a pressure pulse in the second fluid chamber and in the liquid ·. witness that flows from the second fluid chamber to each opening of a different group of paint nozzles, and through it To squeeze liquid out of the last mentioned openings without a drop through any of them the last-mentioned openings spaced outlet is pressed out, one of the openings both to one as well as belonging to the other group, and squeezing out one 709826/0657 ■ A Liquid droplets from only one of the one opening with stand-out through, simultaneous evoking of the pressure pulse generated by the one chamber and the pressure pulse generated by the second chamber at the -an opening. 47. A method for squeezing paint droplets out of a nozzle of a multiple paint nozzle device, characterized by the following process steps :. Forcing a "liquid droplet" out of an opening of only one paint nozzle through X ^T explain one of the volume of a fluid chamber in order to "generate a pressure pulse in this fluid chamber and in the liquid," which from this fluid chamber to the opening of the one Paint nozzle flows, reducing the volume of a second fluid chamber in order to generate a pressure pulse in this second fluid chamber and in the liquid flowing from the second fluid chamber to the opening of one paint nozzle and to at least the opening of the other paint nozzle, and at the same time causing the the pressure pulse generated by the first chamber and the pressure pulse generated by the second chamber only at the opening of the one paint nozzle. 48. A method for pressing out color droplets from a nozzle of a multiple color nozzle device, characterized by the following method steps: forcing a liquid droplet out of an opening of only one color nozzle by reducing the volume of a fluid chamber by. to generate a pressure pulse in this fluid chamber and in the liquid, which from this fluid chamber to each opening of the one group of jet nozzles which the ; includes a paint nozzle, flows, reducing the volume a second fluid chamber in order to enter this second fluid chamber and generating a pressure pulse in the liquid passing from the second fluid chamber to each orifice of the other Group of paint nozzles, which includes only the one paint nozzle of the one group, flows, and simultaneously evokes 709826 / 06B7 the pressure pulse generated by the first chamber and the . - generated by, the second chamber. Pressure pulse only on the Opening of one color slide. 49. A method for squeezing paint droplets out of a Nozzle of a multiple fai-nozzle device, marked by the following process steps: reducing the volume of a fluid chamber in order to have a To generate pressure pulse,. Which from the fluid chamber to a Opening of a paint nozzle flows without a droplet being pushed out of this opening, - reducing the size of the • Volume of a second fluid canister to be in it and in the Liquid to generate a pressure pulse ', which from the second fluid chamber to the opening of a paint nozzle and flows at least to the opening of another paint nozzle, "• .without letting a droplet come out of any of the openings is pushed out, and pushing out a droplet of paint from the opening of only one paint nozzle simultaneous generation of the pressure pulse generated by one chamber and that generated by the second hammer Pressure pulse at the opening of one paint nozzle. 50. Method of squeezing paint droplets out of a Nozzle of a multiple color nozzle device, marked by the following process steps: reducing the volume of a fluid chamber in order to have one in it and in a liquid To generate pressure by the. Fluid chamber to each opening - a group of paint nozzles flows without a liquid droplets are squeezed out of these openings, Reducing the volume of a second fluid chamber in order to generate a pressure pulse in it and in a liquid. that flows from the second fluid chamber to each of the openings of the other group of paint nozzles without a liquid droplet is pressed out of the last-mentioned openings, / wherein one of these openings Belonging to both one group and the other, and squeezing out a droplet of liquid from just de'r 709826/0657. an opening by simultaneously inducing the pressure pulse generated by the one chamber and that of the second chamber generated pressure pulse at this one ■ opening. 51. The device according to claim 4, characterized in that the first and second inlet ducts of each nozzle ducts (12, 14-, 414 ·, 4-16) are located at a specific opening (e.g. 24-, 4-26) cut. _ - 52. Device according to "· Claim 7, characterized in that the first and second inlet ducts (e.g. 4-20, 4-22; 54-6, 590) with the respective pressure bar. (E.g. 4-24 -, 526) is connected at points which, hydraulically speaking, are equidistant from the respective opening (e.g. 4-26, 608). "· -Det are.. 53 · Device according to claim 18, characterized in that the first and second inlet channels of each nozzle are channels (12, 14, 414, 416) which are located at a specific opening (e.g. 24, 426) cut. 54. Apparatus according to claim 18, characterized in that each paint nozzle has a pressure channel (424), which with an opening (426) terminates at one end and the first and the second inlet channel (420, 422) communicates with the pressure channel (424). - 55 · Device according to claim 54, characterized in that the first and second inlet channels (e.g. 420, 422; 546, 590) with the respective pressure channel (e.g. 424, 526) Connections which, from a hydraulic point of view, differ from the respective opening (e.g. 426, 608) are spaced apart. - _ 56. Apparatus according to claim 54, characterized in that the first and second inlet channel (e.g. 420, 422; 546, 590) with the respective pressure channel (e.g. 424, 526) 709826/0657 - 46 "- communicates in places equidistant from the respective opening (e.g. 426, 608) are objected to. 57 · Multiple color nozzle device, characterized by little. At least two paint nozzles, each with a first fluid chamber (X ₀ ), a first channel (12, 414), which the first fluid chamber (Χ _& ). with the opening (24, 412, 426, 608) one of the nozzles connects, a two-way fluid chamber (Y, ₃ ), a el second channel (14, 416) that connects the z-wide fluid chamber (Y ") . Connects to each of the openings (24, 412, 426, 608) of the nozzles, wherein in the first and second fluid chambers • ( ^X o> Ό ^{and in} each channel (12, 14, 414, 416) a liquid is contained, means (30, 32, 34), the . reduce the volume of the respective first and second fluid chambers (X, Y) independently of one another and thereby generate pressure pulses, and devices that simultaneously only at the opening (24, 412, 426, 608) of the one nozzle from the first chamber (X _& ) trigger the pressure pulse generated and the pressure pulse generated by the second chamber (Y _a ) in order to express a drop of liquid from this opening (24, 412, 426, 608) and devices that control the amplitude and duration of the pressure pulses generated by the fluid chambers that a pressure pulse generated by a chamber causes insufficient fluid displacement and an insufficient airspeed _{to be able to push a droplet out of one of the openings t} , and that the combined fluid displacement and fluid velocity caused by the first Chamber generated pressure pulse and the pressure pulse generated by the second chamber is caused, which at the same time 'at the Öf opening of one nozzle occur, too } squeezing a droplet of liquid out of the Opening leads. ■. ' . '-. · 58. The device according to claim 577, characterized in that • that the devices for simultaneously producing pressure pulses at the openings (e.g. 24, 412, 426, 608) 709826/0657 ..R have means on the one nozzle to divert the first and second channels (12, 14; 414, 416; 420, 422; 556, 590) at the one paint nozzle to connect with each other. 59., Apparatus according to claim $ 7 and 58, characterized in that each paint nozzle has first and second fluid inlet channels (e.g. 70, 76; 526, 590) which are in communication with one another, the first channel (12, 414) with the first inlet channel of the one paint nozzle (e.g. 40) and the second channel (14, 416) with the second inlet channel (76) of each paint nozzle (e.g. 40, 42, 44) is in communication. 60. Device according to claim 57 to 59 »characterized in that that each paint nozzle has a pressure channel (e.g. 526) with an outlet opening (e.g. 6Ό8) at one end of the pressure channel (z. B. 526), wherein the first channel (590) with the pressure channel (526) of the one nozzle and the second Channel (e.g. 546) with the pressure channels (e.g. 513, 520.,.) Each of the nozzles communicates, t ^ ig. 17) · 61. Device according to one of claims 57 to 60, characterized in that the first and second channel (e.g. 590, 546) with the pressure channel (z. B. 526) of a nozzle at a point in connection, 'that of the respective The outlet opening (e.g. 608) is removed (Fig. 16, 17). 62. Device according to one of claims 37 to 61, characterized in that the pressure channel (z. B. 526) of the one nozzle with the first and second channels (z. B. 590, 546) are in communication at locations that are hydraulically at different distances from the respective opening (e.g. 608) ν (FIGS. 16, 17). - -. ■ ■ ' 63 · Device according to one of claims 37 to 61, characterized in that the pressure channel (e.g. 526) of one nozzle is connected to the first and second channels (e.g. 590, 546) at points that are hydraulically equally far 709826/0657 at a distance from the respective outlet opening (ζ. Β. 608) is. 64. Apparatus according to claim 57> characterized in that . the first and second channels (12, 14; 414, 416) intersect at the opening (e.g. 24, 412) of the one nozzle. 65 · Device according to one of "Claims 57 to 64-» through a third fluid chamber (z. B. X ^), a .third channel (e.g. 72), the third fluid chamber with the opening of another paint nozzle (z. B. 42) connects, .With the third fluid chamber and the third channel with Liquid is filled, means, that the volume of the third chamber independent of the first and second Reduce fluid chamber in order to generate pressure pulses in the third fluid chamber, 'means to simultaneously only at the opening of the other paint nozzle the pressure pulse generated by the third chamber and the pressure pulse, generated by the second chamber, as well as devices which control the amplitude and duration of the pressure pulses generated by the third fluid chamber so that a pressure pulse generated thereby is "insufficient Fluid displacement and insufficient fluid velocity causes, to be able to push a droplet · out of the opening of the other nozzle, but that the combined fluid displacement and flux velocity, those due to the pressure pulse generated by the third "Kamrier" and the pressure pulse generated by the second chamber is caused simultaneously at the opening the other nozzle, leads to a droplet of liquid being forced out of this opening. 66. Apparatus according to claim '65> characterized in that each paint nozzle has a pressure channel <(e.g. 526) with each an outlet port (e.g. 608) at one end of the pressure channel (e.g. 526), the first channel (590) with the pressure channel (526) - the one nozzle and the 709826/0657 second channel (e.g. 546) with the pressure channels (e.g. 518, 520 ..) communicating each of the nozzles, and wherein the third channel communicates with the pressure channel of the other nozzle stands. 67 · Device according to claim 66, characterized in that the channels remote from the respective opening are in communication with the corresponding pressure channels. 68. Device according to claim 57> characterized in that the first and "second channels (e.g. 12, 14 or 414, 416) at the opening (24, 412) of one nozzle and the second and third channels are at the opening of the other Nozzle cuts. 69. ' Apparatus according to claim 59, characterized by a i'lüssigkeitsversorgungsquelle (22, 632), wherein the first •. and second inlet ducts of each nozzle are ducts (12, 14), intersecting fluid supply channels (16, 18, 20) with the source (22, 6J2) in connection and the Intersection of the first and second inlet channels (12, 14) intersect the fluid supply channels (16, 1B, 20) to the Adjacent outlet opening (24), and the interface, the supply channels (16, '18, 20) and the outlet opening (24) are completely filled with liquid. 70, device according to claim 65, characterized in that each paint nozzle has first and second fluid inlet channels (e.g. 70, 76 »526 _N , 590) which are in communication with one another, the first channel (12, 414) ' with the first inlet channel of the one paint nozzle (e.g. 40) and the second channel (14, 416) with the second inlet channel (76) of each paint nozzle (e.g. 40, 41, 44). is in connection, and the third channel (z. B. 72) is in communication with the first inlet channel (ζ. B. 76) of the other paint nozzle. 709826 / 06B7 71. Apparatus according to claim 70, characterized by a liquid supply source (22, 632), wherein the first and second inlet channels of each nozzle are channels (12, 14) which intersect, fluid supply channels (16, 18, 20) with the source ( are in communication 22, 632) and the intersection of the first and z \ v ⁷ nits inlet channel (12, cut 14), the fluid supply channels (16, 18, 20) adjacent to the outlet opening (24), and the interface. ' Supply channels (16, 18, 20) and the outlet opening (24) are completely filled with liquid. 709826/0857