WO2004030914A1 - 混合液の液滴形成方法及び液滴形成装置、並びにインクジェット印刷方法及び装置、並びにインクジェット印刷用電極付きノズル - Google Patents
混合液の液滴形成方法及び液滴形成装置、並びにインクジェット印刷方法及び装置、並びにインクジェット印刷用電極付きノズル Download PDFInfo
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- WO2004030914A1 WO2004030914A1 PCT/JP2003/010528 JP0310528W WO2004030914A1 WO 2004030914 A1 WO2004030914 A1 WO 2004030914A1 JP 0310528 W JP0310528 W JP 0310528W WO 2004030914 A1 WO2004030914 A1 WO 2004030914A1
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- ink
- nozzle
- electrode
- liquid
- droplet
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2107—Ink jet for multi-colour printing characterised by the ink properties
- B41J2/211—Mixing of inks, solvent or air prior to paper contact
Definitions
- the present invention relates to a method and an apparatus for forming a droplet of a mixed liquid, a method and an apparatus for ink jet printing, and a nozzle with an electrode for ink jet printing.
- Ink jet printing devices generally have three types of primary color inks (C (cyan), M (magenta), and Y (yellow)) corresponding to the three primary colors or four types corresponding to the four primary colors.
- C cyan
- M magenta
- Y yellow
- a color image is formed by applying the primary color ink (the above C, M, Y plus K (black)) onto the printing material, and the intermediate color is expressed by the change in dot density. .
- FIG. 7 is a schematic sectional view showing an ink jet printing apparatus described in the publication. As shown in FIG. 7, in the inkjet printing apparatus 100, a voltage is applied between the ring-shaped electrode 101 and the electrode plate 102 by a power supply 108, and the electrostatic attraction force is used. The concentrated ink 104 is discharged from the liquid supply pipe 103 to form droplets of ink on the printing material 105 on the electrode plate 102.
- the concentrated ink 104 is withdrawn from the liquid feed pipe 103, and at the same time, the transparent solvent 107 is drawn from the liquid feed pipe 106, and the concentrated ink is diluted with the transparent solvent. Then, the diluted droplets are discharged to form droplets having an adjusted ink concentration on the print substrate 105.
- T JP200 hired 0528
- the liquid that is torn off after the ink discharge and remains on the liquid supply pipe 103 side is a mixed liquid of the concentrated ink and the transparent solvent, It remains in the liquid delivery pipe 103. Therefore, when the remaining liquid is mixed with ink of another color, an unintended color is printed on the printing material. Therefore, it is difficult to realize an accurate intermediate color by the method of adjusting the ink density as described above.
- the present invention provides a method and apparatus for forming a mixed liquid droplet capable of accurately mixing a liquid independently discharged from each nozzle on a liquid droplet forming object. It is an object of the present invention to provide an ink jet printing method and apparatus, and a nozzle with an electrode for ink jet printing.
- the present invention provides a method in which a raw material liquid contained in one of a plurality of nozzles is first placed between a plate-shaped electrode arranged opposite to the nozzle. A voltage is applied, the material liquid is discharged from the tip of the nozzle, and a droplet composed of the material liquid is formed on a droplet-forming object disposed between the tip of the nozzle and the flat electrode. A first step, applying a voltage between the raw material liquid accommodated in another nozzle of the plurality of nozzles and the flat electrode to discharge the raw material liquid from the tip of the other nozzle; And a second step of mixing the raw material liquid with the droplet to form a droplet of the mixed liquid.
- a voltage is first applied between the raw material liquid contained in one of the plurality of nozzles and the flat electrode, and the raw material liquid is applied from the tip of the nozzle. Is discharged to form a droplet composed of the raw material liquid on the droplet-formed object.
- the equipotential lines are convex toward the nozzle side. Therefore, when a voltage is applied between the raw material liquid accommodated in another nozzle and the flat electrode, the electric field becomes larger on a line connecting the raw material liquid and the droplet. For this reason, when the raw material liquid accommodated in another nozzle is discharged, the raw material liquid is guided to these droplets, and the raw material liquids are accurately mixed in the droplets.
- an electrode is provided on an outer periphery of at least one of the plurality of nozzles, and a potential higher than the potential of the raw material liquid in the nozzle is applied to the electrode. Is preferred.
- the lines of electric force are more concentrated directly below the nozzle on which the electrodes are installed, it is possible to accurately arrange the raw material liquid at a desired position on the droplet-formed object. You. Therefore, when the raw material liquid is subsequently ejected toward the droplet-formed object, the raw material liquid can be accurately mixed with the droplet on the droplet-formed object. In addition, the mixing of the raw material liquids is performed on the droplet-formed object after the discharge, not before the discharge from the nozzle. Therefore, the quality of the raw material liquid does not change at each nozzle. Therefore, even if droplets are repeatedly formed on the droplet-formed object, droplets of the intended quality can be formed with one dot.
- the present invention also relates to a plurality of nozzles for accommodating a plurality of raw material liquids and discharging the plurality of raw material liquids independently of each other, and a flat plate arranged to face the tips of the plurality of nozzles. And a voltage applying device for applying a voltage between the raw material liquid accommodated in the plurality of nozzles and the plate-shaped electrode.
- this droplet forming apparatus when a voltage is applied by the voltage applying device between the raw material liquid contained in one of the plurality of nozzles and the flat electrode, The raw material liquid is discharged from the nozzle, and a droplet is formed on the droplet-formed object. At this time, the equipotential line becomes convex toward the nozzle side due to the presence of the liquid droplet. Therefore, when a voltage is applied between the raw material liquid contained in another nozzle and the flat electrode, PT / JP2003 / 010528 The electric field becomes larger on the line connecting the liquid and the droplet. Therefore, when the raw material liquid accommodated in another nozzle is discharged, this raw material liquid is guided to the droplets, and the raw material liquids are accurately mixed in the droplets.
- the droplet forming apparatus may further include a control device that controls the voltage application device so as to apply a voltage to any of the plurality of raw material liquids.
- an electrode is provided on an outer periphery of at least one of the plurality of nozzles, and the control device is configured to control the potential of the raw material liquid on the electrode. It is preferable to control the voltage application device so as to apply the above potential.
- the control device controls the voltage application device so as to apply a potential equal to or higher than the potential of the raw material liquid to the electrode, the lines of electric force concentrate more directly below the nozzle. For this reason, the raw material liquid can be accurately arranged at a desired position on the droplet-formed object. Therefore, when the raw material liquid is subsequently ejected toward the droplet-formed object, the raw material liquid can be accurately mixed with the liquid droplets composed of the raw material liquid. Further, since the mixing of the raw material liquids is performed on the droplet-formed object after the discharge, not before the discharge from the nozzle, the quality of the raw material liquid does not change with each nozzle. Therefore, droplets of the intended quality can be formed with one dot.
- the ink jet printing method is the ink jet printing method for printing a color image on a printing substrate using a plurality of inks, wherein the plurality of ink nozzles respectively accommodating the plurality of inks and the ink are provided.
- a diluting nozzle containing a diluting liquid capable of diluting the ink discharging the ink or the diluting liquid from the ink nozzle or the diluting nozzle by electrostatic attraction to form a droplet on the printing substrate.
- a second step of forming a formed droplet first, a voltage is applied between the ink or the diluting liquid contained in one of the ink nozzle or the diluting nozzle and the flat electrode, and The ink or the diluting liquid is ejected from the leading end to form droplets composed of the primary color ink or the diluting liquid on the printing substrate. At this time, the equipotential line becomes convex toward the nozzle side due to the presence of the droplet.
- the diluting liquid is ejected from the diluting nozzle to form droplets of the diluting liquid on the printing medium.
- the method further includes a step of controlling a discharge amount of the diluting liquid.
- a target intermediate color can be accurately represented.
- an electrode is provided on the outer periphery of the dilution nozzle and a potential higher than the potential of the diluent in the dilution nozzle is applied to the electrode.
- the ink jet printing apparatus of the present invention is an ink jet printing apparatus for printing a color image on a printing substrate using a plurality of inks, wherein a plurality of ink nozzles respectively accommodating the plurality of inks;
- a diluting nozzle for storing a diluting liquid capable of diluting the ink, a plate-like electrode disposed opposite to the tip of the ink nozzle and the tip of the diluting nozzle, and a plate-like electrode arranged between the ink and the diluting liquid.
- a voltage application device for applying a voltage therebetween, wherein the plurality of ink nozzles and the dilution nozzle are arranged apart from each other.
- the ink or the diluting liquid is discharged from the ink nozzle or the diluting nozzle.
- the droplets are ejected, and droplets are formed on the substrate.
- the equipotential line becomes convex toward the nozzle due to the presence of the droplet. For this reason, when a voltage is applied between the ink or the diluting liquid contained in another nozzle and the flat electrode, the electric field increases on the line connecting the ink or diluting liquid and the droplet.
- the ink jet printing apparatus may further include a control device that controls the voltage application device so as to apply a voltage to any of the ink and the diluent.
- an electrode is provided on the outer circumference of the dilution nozzle, and the control device controls the voltage application device so as to apply a potential higher than the potential of the diluting liquid to the electrode. Is preferred.
- the controller applies an electric potential equal to or higher than the electric potential of the diluent to the electrode.
- the voltage application device is controlled so as to apply it, the lines of electric force concentrate more directly below the dilution nozzle. For this reason, it becomes possible to accurately arrange the diluting liquid at a desired position on the substrate. Therefore, when the ink is subsequently ejected toward the printing substrate, the ink can be accurately mixed with the liquid droplets composed of the diluting liquid. Also, since the mixture of the diluent and the ink is performed on the print substrate after the ejection, not before the ejection from the nozzles, the ink concentration does not change at each ink nozzle. Therefore, a liquid drop exhibiting the intended intermediate color can be formed with one dot, and high-definition and distortion-free printing can be performed.
- the ink jet printing apparatus may further include: an illumination light source that illuminates the droplet on the printing medium; and a chromaticity measurement device that measures the chromaticity of the droplet illuminated by the illumination light source.
- the control device controls the voltage applying device based on the chromaticity of the droplet measured by the chromaticity measuring device so that the chromaticity of the droplet becomes a desired chromaticity. It is preferable to adjust the discharge amount of the ink or the diluting liquid.
- the present invention is used for an ink jet printing apparatus having a flat electrode, and in a nozzle with an electrode for ink jet printing arranged to face the flat electrode, the ink or the diluting liquid is used. It is characterized by comprising a nozzle to be housed, and an electrode provided on the outer periphery of the nozzle.
- a printing material is arranged between the nozzle and the plate-like electrode and housed in the nozzle.
- a voltage is applied between the ink or diluent and the plate electrode, and a potential higher than that of the ink or diluent is applied to the electrode, the lines of electric force concentrate more directly below the nozzle with electrodes.
- the diluent can be accurately arranged at a desired position on the printing substrate. Therefore, when the ink or the diluting liquid is subsequently ejected toward the printing substrate, the ink or the diluting liquid can be accurately mixed with the droplets on the printing substrate.
- FIG. 1 is a schematic sectional view showing a main part of an embodiment of the ink jet printing apparatus of the present invention.
- FIG. 2 is a bottom view of the nozzle head.
- FIG. 3 is a partial sectional view of the dilution nozzle.
- FIG. 4A, FIG. 4B, and FIG. 4C are timing charts of the pulse voltage in each nozzle.
- FIGS. 4D, 4E, 4F, 4G, and 4H are diagrams illustrating a series of processes for forming droplets exhibiting intermediate colors.
- FIG. 5 is a flowchart showing the steps for accurately realizing the intended intermediate color.
- FIG. 6 is a schematic sectional view showing a main part of another embodiment of the ink jet printing apparatus of the present invention.
- FIG. 7 is a schematic sectional view showing an example of a conventional ink jet printing apparatus.
- FIG. 1 is a schematic view showing a main part of an ink jet printing apparatus according to an embodiment of the present invention
- FIG. 2 is a bottom view of a nozzle head.
- the ink jet printing apparatus 1 includes a nozzle head 2, and a flat electrode 3 is arranged to face the nozzle head 2. .
- a recording paper (droplet forming material) 4 as a printing material is arranged on the flat electrode 3.
- the nozzle head 2 can be reciprocated in the direction of arrow A in FIG. 1 by the nozzle head feed mechanism 5, and the recording paper 4 is moved by the recording paper feed mechanism 6 to the arrow B perpendicular to the direction of arrow A. It can be moved freely in any direction.
- the nozzle head 2 has a nozzle holder 7, and the nozzle holder 7 has a dilution nozzle 8 for accommodating a diluent (raw material liquid) 8a,
- a diluent (raw material liquid) 8a Four inks 9 a, 9 b, 9 c, 9 d (9 a to 9 d) each containing four types of primary color inks (raw material liquids) corresponding to the four primary colors 9 a 9 b 9 c 9 d 1 ) Is fixed.
- the dilution nozzle 8 and the ink nozzles 9a to 9d are made of glass from the viewpoint of dimensional stability.
- C ink 9a contains M ink 9b
- Y ink 9c contains K ink 9di.
- the dilution nozzle 8 is connected to the diluent supply tank.
- each of the ink nozzles 9a to 9d is an ink supply tank.
- the ink nozzles 9a to 9d and the dilution nozzle 8 are arranged apart from each other. More specifically, the dilution nozzle 8 is fixed to the center of the nozzle holder 7, and the ink nozzles 9 a to 9 d are arranged on the circumference of the dilution nozzle 8 at equal intervals.
- the reason why the dilution nozzle 8 is arranged at the center is to discharge the diluting liquid of the primary color ink and the diluting liquid first when forming a one-dot droplet on the recording paper 4. Therefore, when another primary color ink is ejected first when forming a dot of one dot on the recording paper 4, the primary color ink is arranged at the center.
- the ink and the diluting liquid contained in the diluting nozzle 8 and the ink nozzles 9a to 9d are applied to a voltage applying device capable of supplying a pulse voltage. It is electrically connected to the plate electrode 3 via 10. Therefore, it is possible to apply a voltage between the ink or the diluent and the flat electrode 3 by the voltage applying device 10.
- the illumination fiber 11 and the light receiving fiber 12 are inserted and fixed to the nozzle holder 7 at positions axially symmetric with respect to the dilution nozzle 8 (see FIG. 2).
- the illumination fiber 11 is connected to a white light source (illumination light source) 13, and the reception fiber 12 is connected to a chromaticity measuring device 14 (see Fig. 1). Therefore, it is possible to illuminate the droplet with the white light from the white light source 12 via the illumination fiber 11, and the light received from the droplet via the light receiving fiber 12 is measured by the chromaticity measuring device 14. The chromaticity of the droplet is measured based on this light.
- the inkjet printing apparatus 1 includes a control unit 15, and the control unit 15 controls the nozzle head feed mechanism 5, the recording paper feed mechanism 6, the voltage application apparatus 10, the white color.
- the light source 13 and the chromaticity measuring device 14 can be controlled.
- FIG. 3 is a partial cross-sectional view of the dilution nozzle, showing a state in which the dilution liquid is discharged from the dilution nozzle to form droplets on the recording paper 4.
- the configuration of the dilution nozzle 8 is described in FIG. 3, the configuration and function of the dilution nozzle 8 are the same as those of the ink nozzles 9a to 9d. In this case, each of the ink nozzles 9a to 9d has The ink 9a 9 is stored instead of the diluent 8a.
- FIG. 4 A, FIG. 4 B, FIG 4 C, the pulse voltage delta E 3 to be marked pressure between each nozzle and the plate electrodes 3, ⁇ ⁇ 2, ⁇ ⁇ ⁇ timing chart of , FIG. 4D, FIG. 4E, FIG. 4F, FIG. 4G, and FIG. 4H are views showing a series of processes for forming a droplet having an intermediate color.
- a pulse voltage is applied between the diluent and the plate electrode 3 by the voltage application device 10.
- time 1 ⁇ to 1 between 2 applies a voltage [Delta] [epsilon] 2 to form a pulse voltage.
- the diluting liquid 8a is drawn out from the diluting nozzle 8 by electrostatic attraction, and the tiller cone is drawn.
- the voltage stored in the ink nozzle 9c by the voltage application device 10 A voltage is applied between the Y ink and the flat electrode 3.
- the voltage applied between times t 2 ⁇ t 3 to form a pulse voltage by applying a voltage [Delta] [epsilon] 3.
- the equipotential lines are convex toward the nozzle 9c side, and the electric field is generated on the line connecting the tip of the ink nozzle 9c and the droplet. Is larger.
- the droplet L is illuminated with white light emitted from the white light source 13 through the illumination fiber 11, and the light emitted from the droplet L Is received by the chromaticity measuring device 14 via the receiving fiber 12. Then, based on the chromaticity measured by the chromaticity measuring device 14, the amount of the ink or diluent added is adjusted so that the chromaticity of the droplet L becomes a desired chromaticity. Specifically, the amount of addition may be adjusted according to the pulse time of the pulse voltage output from the voltage application device 10.
- a voltage is applied between the C ink stored in the ink nozzle 9a and the flat electrode 3 by the voltage application device 10.
- the voltage application device 10 between times t 3 ⁇ t 4, to form a pulse voltage by applying a voltage.
- the equipotential lines are in a convex state toward the ink nozzle 9 a side, and are on the line connecting the tip of the ink nozzle 9 a and the droplet L.
- the electric field becomes larger. For this reason, as shown in FIG.
- a predetermined amount of C ink is ejected toward the droplet L after the C ink is drawn out from the ink nozzle 9a by electrostatic attraction to form a tiller cone.
- a turbulent flow state is caused, whereby the C ink and the diluent are mixed appropriately.
- the droplet L is illuminated with white light emitted from the white light source 13 via the illumination fiber 11 and emitted from the droplet L. Light is received by the chromaticity measuring device 14 via the receiving fiber 12.
- the addition amount of the C-ink or the diluent is adjusted so that the chromaticity of the droplet L becomes a desired chromaticity.
- M ink and K ink are applied to the droplet L as needed to form a droplet L having a neutral color.
- the method of ejecting M ink and K ink is the same as the method of ejecting Y ink and the like.
- the droplet L having an intermediate color is formed on the recording paper 4.
- the droplet L having the intermediate color is formed by mixing the primary color inks, but the mixing of the primary color inks is not performed before being discharged from the nozzle, but is performed after being discharged. Therefore, the density of the primary color ink stored in each of the ink nozzles 9a to 9d is always kept constant. Therefore, even if the ink jet printing apparatus 1 is used repeatedly, the intended intermediate color can be accurately given to the droplets formed on the recording paper 4.
- the force to move the recording paper 4 in the direction of arrow B in FIG. 1 by the recording paper feed mechanism 6 The nozzle head 2 is moved by the nozzle head feed mechanism 5 to the arrow in FIG. By moving in the direction A to form droplets in the same manner as above, and repeating this, a color image using a true color instead of a false color can be formed.
- the operations of the nozzle head feed mechanism 5, the recording paper feed mechanism 6, the voltage application device 10, the white light source 13, and the chromaticity measurement device 14 described above are all controlled by the control device 15. Good
- the droplet L is illuminated with white light, and the chromaticity of the droplet L is measured using the chromaticity measuring device 14. Next, the measured chromaticity is converted to obtain the lightness index L * of the CIELAB color system and the chroma coordinates a *, b *.
- the mixing ratio of each primary color ink for realizing a target intermediate color is determined based on data such as the absorption total of each primary color ink. It is necessary to prepare L * a * b * values of each primary color ink corresponding to the ratio.
- FIG. 5 is a flowchart for realizing a target intermediate color. As shown in FIG. 5, first, a droplet L composed of a diluting liquid is formed on the recording paper 4 (Step 1).
- the unit amount refers to the amount of the ink or the diluting liquid that is discharged when a voltage of one pulse is applied between the ink or the diluting liquid and the flat electrode 3.
- step 3 using the value of L * a * b * of the C and Y mixed inks for the target intermediate color as a criterion, it is determined whether the degree of color mixing of the C ink is large or small. If the amount is small, add a unit amount of C-ink, and if it is large, add the unit amount of diluent (step 3).
- step 4 using the value of L * a * b * of the C, M, and Y mixed inks for the target intermediate color as a criterion, it is determined whether the degree of color mixing of the M ink is large or small. If it is less, add a unit amount of M ink, and if it is more, add a unit amount of diluent (step 4).
- L * a * b * for the target intermediate color is used as a criterion, and it is determined whether the degree of color mixing of the K ink is high or low. If the amount is small, add a unit of K-ink, and if it is large, add the unit of diluent (Step 5).
- the chromaticity of the droplet is measured each time ink is ejected on the droplet, and the color mixture is performed while judging the degree of the color mixture. Can be granted.
- FIG. 6 the same or equivalent components as those in the first embodiment are denoted by the same reference numerals and description thereof will be omitted.
- the ink jet printing apparatus has a dilution nozzle (nozzle with an electrode) 8 provided with an electrode 20 on the outer periphery. This is different from the ink jet printing apparatus 1.
- the constituent material of the electrode 20 is not particularly limited as long as it has conductivity, but gold or platinum is preferable as the constituent material from the viewpoint of preventing corrosion.
- the electrode 20 can be formed, for example, by vapor-depositing the above constituent material on the tip of the dilution nozzle 8.
- the same voltage as the pulse voltage applied between the diluent 8a and the plate electrode 3 is applied to the plate and the electrode. Applied between the electrode 3.
- the electrostatically induced charge 21 appearing at the tip of the electrode 20 biases the charge distribution of the electrostatically induced charge 161 on the diluent surface so as to be highest at the center of the nozzle. Therefore, a large electrostatic force acts between the portion having a high charge density, that is, the central portion of the diluent surface and the flat electrode 3. As a result, the tiller cone 16 remains at the inner diameter portion of the nozzle end face, and its shape is more sharply deformed. This is a result of the lines of electric force being more concentrated at the center of the nozzle. For this reason, the position where the droplet L is formed can be extremely stable. In other words, on the chart paper 4 8 Droplets L can be formed more precisely at desired positions.
- the ink jet printing apparatus can accurately strike the primary color ink on the droplet L, so that the intermediate color
- the droplet L exhibiting the following condition can be accurately formed at a desired position.
- the droplet L does not exhibit one intermediate color by a plurality of droplets, but exhibits an intermediate color by itself, that is, by one dot. Therefore, according to the ink jet printing apparatus of the present embodiment, it is possible to print a high-definition, distortion-free color image.
- the tiller cone 16 is formed, it remains at the inner diameter portion of the nozzle, so that the tip end portion becomes sharp, and the liquid at the time of ejection is discharged.
- the cutting of the bean becomes better. Therefore, the distance between the diluent 8a and the flat electrode 3 can be reduced, and driving can be performed with a relatively small voltage. Due to this effect, there is no need to worry about discharge between the diluent 8a and the flat electrode 3, and the reliability of the ink jet printing apparatus can be improved.
- the size of the inkjet printing apparatus can be reduced.
- the inkjet printing apparatus of the present embodiment in addition to the above effects, on-demand printing is also possible. Therefore, the inkjet printing apparatus of the present embodiment is extremely effective as a micro printing apparatus which is a forgery prevention printing technique.
- the same voltage as the pulse voltage applied between the diluent and the plate electrode 3 is applied between the electrode 20 and the plate electrode.
- the voltage it is preferable to apply a voltage higher than the pulse voltage applied between the diluent and the plate electrode 3 between the electrode 20 and the plate electrode 3.
- the electrostatically induced charge 21 appearing at the tip of the electrode 20 is biased so that the charge distribution of the electrostatically induced charge 161 on the diluent surface becomes highest at the center of the nozzle.
- a large electrostatic force acts between the portion having a high charge density, that is, the central portion of the diluent surface and the flat electrode 3.
- the electrode 20 is also installed on the ink nozzles 9a to 9d, which are the only ones on which the electrode 20 is installed only for the diluted nozzle 8.
- the electrode 20 is provided on the outer periphery of the tip of the ink nozzles 9a to 9d, and its configuration and function are such that the dilution nozzle 8 shown in FIG. 6 is connected to the ink nozzles 9a to 9d. It will be replaced.
- the time of ejection of the primary ink 9 a 1 S di, the expired good primary liquid ink it can be driven into and drop a smaller amount units.
- Each of the ink nozzles 9a to 9d has a single internal space, and contains only ink in this space.
- the dilution nozzle also has a single internal space, and contains only the diluent in this space.
- the present invention is not limited to the above-described first and second embodiments.
- the first and second embodiments relate to an ink jet printing apparatus, and use a primary color ink or a diluting liquid as a raw material liquid.
- a conductive liquid for example, silver paste or mercury
- this conductive liquid droplet forming device functions as a device for producing, for example, a thin and planar electric circuit (electric wires, resistors, capacitors, reactances, and the like).
- an insulating liquid such as silicon oil or machine oil may be used instead of the conductive liquid.
- the ink jet printing method and the printing apparatus of the present invention it is possible to mix the primary color ink or the diluting liquid ejected independently from each nozzle accurately on the printing material, Droplets exhibiting a neutral color can be accurately formed.
- the nozzle with an electrode for ink jet printing of the present invention when used in an ink jet printing apparatus provided with a flat plate-like electrode, an object to be printed is arranged between the nozzle and the flat plate-like electrode, When a voltage is applied between the ink or diluent contained in the nozzle and the flat electrode, and a potential higher than that of the ink or diluent is applied to the electrode, the lines of electric force are generated immediately below the nozzle with electrodes.
- the ink or the diluting liquid can be accurately arranged at a desired position on the printing substrate. Therefore, when the ink or the diluting liquid is subsequently ejected toward the printing substrate, the ink or the diluting liquid can be accurately mixed with the droplets on the printing substrate.
- a raw material liquid containing a material involved in the reaction such as a raw material and a catalyst is prepared individually, and these droplets are formed in situ during analysis.
- Technology development is being studied on a method for forming a mixed liquid droplet in which liquid droplets having different composition are mixed instantaneously on a substrate by mixing them at a predetermined volume ratio.
- Japanese Patent Laid-Open Publication No. 2001-116750 describes a plurality of ink jet nozzles.
- a predetermined amount of reactive substances are supplied at high speed to predetermined spots on the substrate using By immobilizing it, it can be used as a probe or the like in the analysis of DNA, etc.
- a method for producing a reactive chip in which substances (DNA fragments, cDNA, polypeptides, oligonucleotides, etc.) are immobilized on a substrate, and There has been proposed a method for producing the above-mentioned reactive substance at a predetermined spot on a substrate by using a raw material of the above-mentioned reactive substance instead of the above-mentioned reactive substance in a similar manner.
- the raw material liquid contained in the above-described nozzle may be a reactive substance (nucleotide, cDNA, DNA fragment, enzyme, antigen, antibody, epitope, protein, or the like) instead of ink.
- the above-mentioned raw material nozzles 9a, 9b, 9c, 9d are nozzles in which a single raw material liquid is stored, wherein electrodes are provided on the outer periphery of the nozzle tip. Separately from this, the dilution nozzle 8 containing only the diluting liquid is spaced apart from the raw material nozzle, so that the voltage applied between each electrode 20 and the plate-like electrode 3 is separately provided. Thus, the raw material liquid and the diluting liquid can be discharged, and these raw material liquids and the diluting liquid can be mixed on the droplet-formed object.
- the present invention can be used for a droplet forming method and a droplet forming apparatus for a liquid mixture, an inkjet printing method and apparatus, and a nozzle with an electrode for ink jet printing.
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- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003257630A AU2003257630A1 (en) | 2002-09-30 | 2003-08-20 | Droplet forming method for mixed liquid and droplet forming device, and ink jet printing method and device, and ink jet pringing electrode-carrying nozzle |
US10/529,060 US7422307B2 (en) | 2002-09-30 | 2003-08-20 | Droplet forming method for mixed liquid and droplet forming device, and ink jet printing method and device, and ink jet printing electrode-carrying nozzle |
EP03799084.3A EP1547789B1 (en) | 2002-09-30 | 2003-08-20 | Droplet forming method for mixed liquid and droplet forming device, and ink jet printing method and device, and ink jet pringing electrode-carrying nozzle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002287267A JP4112935B2 (ja) | 2002-09-30 | 2002-09-30 | 混合液の液滴形成方法及び液滴形成装置、並びにインクジェット印刷方法及び装置 |
JP2002/287267 | 2002-09-30 |
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WO2004030914A1 true WO2004030914A1 (ja) | 2004-04-15 |
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PCT/JP2003/010528 WO2004030914A1 (ja) | 2002-09-30 | 2003-08-20 | 混合液の液滴形成方法及び液滴形成装置、並びにインクジェット印刷方法及び装置、並びにインクジェット印刷用電極付きノズル |
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US (1) | US7422307B2 (ja) |
EP (1) | EP1547789B1 (ja) |
JP (1) | JP4112935B2 (ja) |
AU (1) | AU2003257630A1 (ja) |
WO (1) | WO2004030914A1 (ja) |
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JP6089178B2 (ja) * | 2012-01-20 | 2017-03-08 | 国立大学法人 奈良先端科学技術大学院大学 | コンプレックスポリマーの製造方法 |
US9527049B2 (en) | 2012-06-20 | 2016-12-27 | Bio-Rad Laboratories, Inc. | Stabilized droplets for calibration and testing |
KR101454106B1 (ko) * | 2013-03-15 | 2014-10-22 | 참엔지니어링(주) | 전기 수력학을 이용한 패턴라인 형성장치 및 패턴라인을 형성하는 방법 |
US9954289B2 (en) * | 2015-05-20 | 2018-04-24 | Yazaki Corporation | Terminal with wire, manufacturing method of terminal with wire, and wire harness |
JP7153343B2 (ja) * | 2019-04-25 | 2022-10-14 | 株式会社Sijテクノロジ | 液滴吐出装置および液滴吐出方法 |
JP2024054621A (ja) * | 2022-10-05 | 2024-04-17 | 株式会社Sijテクノロジ | 液滴吐出装置、液滴吐出用ノズルヘッドおよび液滴吐出方法 |
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- 2002-09-30 JP JP2002287267A patent/JP4112935B2/ja not_active Expired - Fee Related
-
2003
- 2003-08-20 EP EP03799084.3A patent/EP1547789B1/en not_active Expired - Fee Related
- 2003-08-20 US US10/529,060 patent/US7422307B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
EP1547789B1 (en) | 2013-10-02 |
EP1547789A1 (en) | 2005-06-29 |
JP4112935B2 (ja) | 2008-07-02 |
JP2004122447A (ja) | 2004-04-22 |
AU2003257630A1 (en) | 2004-04-23 |
US7422307B2 (en) | 2008-09-09 |
EP1547789A4 (en) | 2007-11-07 |
US20060038860A1 (en) | 2006-02-23 |
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