EP3046773A1 - Device and method for transferring flowable printing substances onto a printing material - Google Patents
Device and method for transferring flowable printing substances onto a printing materialInfo
- Publication number
- EP3046773A1 EP3046773A1 EP14766417.1A EP14766417A EP3046773A1 EP 3046773 A1 EP3046773 A1 EP 3046773A1 EP 14766417 A EP14766417 A EP 14766417A EP 3046773 A1 EP3046773 A1 EP 3046773A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- cavities
- substance
- cavity
- openings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007639 printing Methods 0.000 title claims abstract description 316
- 239000000126 substance Substances 0.000 title claims abstract description 146
- 239000000463 material Substances 0.000 title claims abstract description 26
- 230000009969 flowable effect Effects 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 32
- 239000000758 substrate Substances 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 34
- 230000005670 electromagnetic radiation Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims 1
- 239000000976 ink Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 11
- 230000005855 radiation Effects 0.000 description 9
- 230000035515 penetration Effects 0.000 description 8
- 101100390736 Danio rerio fign gene Proteins 0.000 description 4
- 101100390738 Mus musculus Fign gene Proteins 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/04—Printing plates or foils; Materials therefor metallic
- B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/10—Intaglio printing ; Gravure printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
Definitions
- the invention relates to a device and a method for transferring flowable printing substances, in particular flowable printing inks, onto a printing substrate.
- the patterns to be printed are applied to the printing form.
- the patterns can be applied in the form of depressions or elevations on a surface.
- Printing ink is applied to the elevations (high pressure) or pressed into the cavities (gravure printing) and transferred to the substrate by contact with the printing substrate.
- the mentioned methods have the disadvantage that each new pattern to be printed requires a new printing form.
- a printing plate is used, on the surface of which a grid of fine openings with adjoining cavities is embedded.
- the fine openings form the grid points from which a pattern to be printed can be constructed.
- the ink is sucked by means of a negative pressure in the cavities through the openings in the cavities. In selected cavities, an overpressure is then generated, whereby the ink through the to Cavities belonging openings on the substrate passes.
- the previously known printing method can also provide that printing ink is sucked into only selective cavities.
- the prior art printing process is relatively complicated, since on the one hand printing ink must not penetrate into the opening of the printing plate by itself, but on the other hand, the pressure difference generated in the cavity, which is generated for example by heating and cooling of the gas filling in the cavity must be sufficient to printing inks to pull in the openings. This is only possible if the surface properties of the printing form and the printing ink are precisely matched to one another. Moreover, the process of creating a negative pressure in a cavity and covering the associated orifice with ink must be timed very accurately. These conditions make this printing process susceptible to interference.
- the printing form according to the invention is defined by the features of claim 1.
- the inventive method is defined by the features of claim 11.
- a printing form according to the invention for transferring flowable printing substance to a printing substrate having a body with a surface having a plurality of openings, with a plurality of cavities in the body, which terminate in the openings of the surface of the body and contain gas, wherein the cavities are each bounded by a wall adjacent to the opening, surrounding the respective cavity wall, and each having a cavity associated means for generating an overpressure in the cavity in question is provided that at least parts the surface of the body and / or wall surfaces of the walls of at least some, preferably all, cavities in a first, near-wall region of the wall of a surface wettable with the printing substance.
- the printing form according to the invention enables the openings of the surface of the body to be closed in a gas-tight manner by the flowable printing substance.
- the portion of the printing substance occluding the opening can be pressed onto the printing material to be printed.
- the printing substance is at least partially drawn by capillary forces through the openings into the cavities.
- the surface of the body consists of a wettable surface with the printing substance, so that the printing substance is applied to the surface of the body and wets it, should be between the surface of the printing plate and the substrate to be printed a distance be kept to prevent the printing substance passes without pressure in corresponding cavities on the substrate.
- a distance is not necessary in an embodiment of the printing form in which the printing substance is drawn into the cavities, if excess printing ink is stripped off the printing form, for example via a doctor blade.
- the printing form according to the invention has the advantage that the printing substance remains on the printing plate and / or in the cavities without external intervention and seals off the openings of the cavities in a gastight manner.
- a vote of the pressure in the cavities already when the printing substance is not necessary, making the printing plate is more robust and less susceptible to interference when printing on substrates.
- the contact angle between the printing substance and the surface of the body or between the printing substance and the wall surface in the first wall region is ⁇ 90 °, preferably ⁇ 45 °. This ensures a particularly advantageous wetting of the corresponding surfaces.
- the device for generating an overpressure in a cavity has at least one deformable and / or movable wall area for changing the volume of the cavity, wherein the volume of the cavity can be reduced by deforming and / or moving the wall area.
- the overpressure can be advantageously produced in the cavity. It can be provided that the deformable and / or movable wall portion of the cavity is biased into a first position and from this out by means of an actuator in a second position can be transferred, wherein the volume of the cavity in the first position of the wall portion is smaller than in the second position. In this way, the overpressure can be generated in a simple manner by the actuator is released in a transferred to the second position wall portion and is transferred by the bias of the wall portion in the first position. The force required for generating the overpressure is provided by the bias voltage.
- the device for generating an overpressure in a cavity of a heating device for heating the gas in the cavity In this way it can be achieved with little device complexity that an overpressure is generated in a cavity in which the gas is heated via the heating device. Since the opening of the cavity during the printing process by the printing substance gas-tight is closed, increases by heating the gas, the pressure in the cavity until it is sufficient to push the printing substance from the opening of the cavity.
- the heating device is designed for heating the gas in the cavity as a resistance heating element.
- the heating device is designed to heat the gas in the cavity as a heating element which heats up by absorption of electromagnetic radiation.
- the heating element preferably comprises a metal oxide.
- electromagnetic radiation laser light is preferably used.
- the wall surfaces of the walls of at least some, preferably all, cavities in a second, wall region remote from the opening consist of a surface that is poorly or not wettable with the printing substance.
- the second wall region preferably adjoins the first wall region.
- the printing substance penetrates into the cavity until the counter-pressure caused by the gas in the cavity is sufficient to allow further penetration of the printing substance to prevent.
- the gas disposed in the cavity may be, for example, air.
- elevations are arranged as spacers to the printing materials on the surface.
- the elevations of the surface may be formed by the roughness of the surface.
- the maximum diameter of the openings is smaller than the capillary length of the printing substance. This determines the influence of gravity on the behavior of the Printing substance negligible in the openings of the printing plate.
- the maximum diameter is understood to be the maximum distance between two directly opposite points on the opening edge, wherein the opening may also have a shape deviating from a circular shape.
- the capillary length is equal to the square root of the quotient of the surface tension of the printing substance divided by the product of density of the printing substance and gravitational acceleration. For example, for a printing substance with the surface tension and the density of water, the capillary length is about 2.7 mm.
- the gas in a cavity may also be heated by direct inductive, capacitive or resistive coupling of energy into the gas or by absorption of electromagnetic radiation by the gas.
- the devices for generating an overpressure for discharging differently sized quantities of printing substance can produce different degrees of overpressures.
- the printing form may further comprise a cooling device, via which the cavities can be cooled to ambient temperature.
- the method for transferring flowable printing substance from a printing plate to a printing material provides that the printing substance is drawn into cavities into which open the openings of the surface of the printing plate by means of capillary forces, wherein the printing substance within the openings and the near-mouth region of the cavities located and / or the printing substance wets the surfaces, wherein the printing substance gas-tightly seals at least a portion of the openings, and that the printing substance is discharged by applying an overpressure from the cavities on the substrate, wherein a printing form according to the invention is used.
- the method according to the invention can provide that the printing substance is drawn into the openings and into the areas close to the opening of all cavities of a group of cavities and / or the printing substance gas-tightly closes the openings of all cavities of a group of cavities, and that the discharge by selectively applying an overpressure occurs within selected cavities of this group of cavities.
- the inventive method thus uses a printing plate according to the invention, in whose surface a grid of fine openings is introduced, from which the printed image is constructed.
- Each of the openings opens into a cavity located behind it, which can be heated or cooled by suitable devices.
- Each cavity has only one opening.
- Flowable printing substance is applied by suitable devices on the surface of the printing plate to close the openings in the surface of the printing plate gas-tight with printing substance and thereby enclose a volume of gas in the associated cavities.
- the printing substance can be spread on the printing form, sprayed on or applied by immersion in the printing substance.
- the temperature of the gas fillings in the cavity is referred to in this process as the starting temperature.
- the printing substance is then transferred from the printing plate to the printing material in that individual cavities and thus the gas fillings of these cavities are heated in accordance with the printed image.
- the temperature of these gas fillings with respect to the starting temperature and thus also their gas pressure relative to the ambient pressure increases.
- Drucksubtanz is then pushed away from belonging to these cavities openings accelerated and supported by the then onset of gas flows from these Cavities spun on the substrate.
- the heated cavities are cooled and returned to the starting temperature.
- the openings are free and a gas exchange between these cavities and the environment can take place.
- the cycle of the printing method according to the invention consisting of the gas-tight sealing of the openings with printing substance, the rapid heating of gas fillings in selected cavities according to the patterns to be printed, the consequent acceleration, ejection and transfer of printing substance to the substrate, the subsequent cooling of gas fillings, including gas exchange between the cavities and the environment, can then be run through again.
- the distance between the printing plate and printing material is as small as possible in order to obtain the best possible resolution determined by the arrangement of the openings in the surface of the printing plate in the printed image on the printing substrate. Larger distances between the printing plate and the substrate cause a fanning of the application surface of the printing substance delivered to the substrate, whereby the resolution in the printed image is lower.
- the best possible resolution in the print image is achieved when the substrate touches the printing form when transferring the printing substance. This is only possible if the printing substance penetrates into the openings of the printing plate and remains on the surface of the printing plate but no printing substance.
- the printing substance penetrates only a little way into the openings of the printing form, since the cavity behind the openings may not be completely filled with printing substance, since a residual gas volume is necessary for the printing process according to the invention.
- This can be supported by being immediately behind one Opening in the printing form, the inner wall of the cavity is such that it is well wetted by the printing substance, whereby capillary forces pull the printing substance into the opening.
- the inner wall of the cavity is designed so that the wettability is significantly worse, thereby advantageously a barrier against further penetration of printing substance is formed in the cavities of the printing plate.
- the penetration of printing substance into a cavity is limited by the fact that the gas volume is forced together in the cavity by the penetration of printing substance, whereby the pressure in the gas volume increases and thereby counteracts a force on the printing substance further penetration of the printing substance.
- the printing substance need not necessarily penetrate into the openings of the printing plate in order to close them gas-tight.
- a coherent film or film islands or individual drops of printing substance can also close openings in a gastight manner.
- the printing substrate must not touch the printing substance, as otherwise uncontrolled printing substance could reach the printing substrate.
- the necessary distance between the surface of the printing plate and the surface of the printing material is predetermined by elevations on the surface of the printing plate.
- the order of the printing substance on the printing form takes place in such a way that the tips of the surveys are not covered with printing substance.
- the amount of the maximum applied pressure substance is dependent on the height of these surveys.
- the application of the printing substance is done so that the tips of these surveys are not covered with printing substance.
- Printing substance is thus only between the elevations on the printing form. This is achieved, for example, by applying a sufficiently small amount of printing substance to the printing form. It can also be used to a squeegee To remove pressure substance from the elevations.
- the elevations on the printing form serve as stops for the printing material. Direct contact between the printing substance and the printing material is prevented by the elevations on the printing form.
- the surveys are available in sufficient number on the printing plate to prevent a concern of the printing material on the surface of the printing plate.
- the protrusions may be arranged in a pattern on the surface of the printing form. Also possible is a disorderly random arrangement of the surveys. There must be only enough surveys per unit area to prevent direct contact between the printing substance and substrate.
- a special shape of a printing plate with elevations is a printing plate with a rough surface.
- the high peaks of the rough surface form the elevations and it is always applied only so much printing substance, that sufficiently many of the high peaks are not covered with printing substance.
- this type of printing forme can be removed with a doctor blade, the printing substance of high peaks.
- a printing form with elevations pressure substance penetrates into the cavities.
- Such a printing form is particularly advantageous when the flowable printing substance is a suspension.
- the dimensions of the openings in the printing plate and the dimensions of the solids in the suspension are selected so that, although the liquid of the suspension can penetrate into the cavities or is drawn by capillary forces into the cavities, but not the solids of the suspension. This excludes that the solids in the openings tilt and clog them.
- the flowable printing substance can be a flowable printing ink if the printing method according to the invention and the printing form according to the invention are to be used in the graphic arts industry.
- the flowable printing substance can also consist of electronic functional materials from which printed electronics can be produced using the printing process according to the invention.
- the flowable printing substances can also be biologically or chemically active substances which are applied in a controlled manner to a printing material by the printing process according to the invention, in order to react there with other substances, for example.
- the printing form according to the invention may for example consist of aluminum oxide, which is produced by anodic oxidation of a thin disk of aluminum.
- the cavities may be blind holes, for example.
- the diameters of the blind holes can be for example 400 nm.
- the depth of the blind holes can be for example 100 pm.
- the elevations may for example have a maximum height of 0.5 pm.
- the distance between the elevations may be for example about 150 pm.
- FIG. 1 shows a schematic perspective view of a printing form according to the invention
- Figures 2a and 2b are schematic detailed representations of the surface of a
- FIG. 3a-3d is a schematic representation of the invention
- FIG 4 is a schematic detail of an alternative
- FIGS 5a-5c an alternative embodiment of the printing form according to the invention with elevations and the printing process according to the invention carried out and
- Figures 6a and 6b show an alternative embodiment of a printing form according to the invention with elevations on the surface.
- a printing form 1 according to the invention is shown schematically.
- the printing plate 1 is formed in the illustrated embodiment as a hollow cylinder.
- the printing form 1 has a body 2 with a surface 3 with openings 5, which are shown in Fig. 1 only schematically.
- Each cavity 7 ends only in a single opening. 5
- the printing form 1 is used for printing a printing substance on a substrate 100, which can be pressed against the surface 3, for example via a roller 102, or the roller 102 is held at a predetermined distance to the surface 3.
- the pressure roller 1 further has a heating device 104, via which a gas located in the cavities 7 can be heated by means of individual heating devices.
- the heating device 104 can be controlled via a control device 106.
- the printing substance is applied to the surface 3 of the printing form 1 via a printing substance application device 108 with associated printing substance application control device 110.
- a doctor not shown, may be provided, for example, a knife blade, over the excess printing substance before printing the substrate is strippable.
- a cooling device 112 can be provided, via which the cavities 7 heated by means of the heating device 104 can be cooled.
- the openings 5 are arranged in a grid-shaped manner on the surface 3.
- the cavities 7, which open into the openings 5, are blind-hole-shaped and bounded by a wall 9.
- the wall surface 13a is formed as a readily wettable surface.
- the wall surface 13b is formed as a surface poorly wettable by the printing substance.
- the openings 5 preferably have a maximum diameter D, which is smaller than the capillary length of the printing substance. For an order of the printing substance on the surface 3, the printing substance is now sucked by the capillary action in the cavity 7 and closes the openings 3 each gas-tight.
- FIGS. 2a and 2b differ only in that in the embodiment of Fig. 2a, the surface 3 of the printing form 1 forms a flat surface, whereas the surface 3 of the embodiment of FIG. 2b forms a curved surface.
- the gas is heated in the cavity 7, so that this expands and forms an overpressure.
- the gas for heating the gas, for example, end pieces 17 of the cavities 7 can be heated.
- the printing substance 200 is applied. Due to the capillary forces, the printing substance is drawn through the opening 5 into the cavity 7, the above-described special embodiment of the wall surface 13a causing the printing substance to remain only in the area close to the opening (FIG. 3b). Finally, the printing substance can be stripped off (FIG. 3c).
- the printing substance 200 closes the opening 5 gas-tight.
- By subsequently heating the gas in the Cavity 7 by means of a cavity 7 associated heating device 19 forms an overpressure in the cavity 7. With a sufficiently strong and rapid heating of the gas and the associated pressure increases then the printing substance is pushed away from the opening 5, accelerated and supported by a then onset of gas flow from the cavities 7 on the substrate 100 thrown (Fig. 3d).
- the printing method according to the invention by means of the printing form 1 according to the invention thus enables a very accurate print image, for example, selectively individual cavities 7 can be heated, so that a desired print image is achieved.
- the surface 3 of the printing form 1 can also be formed as a readily wettable surface.
- the surface 3 is wetted with printing substance 200, whereby the openings 5 are sealed gas-tight.
- the printing substance 200 remains completely on the surface 3 and does not penetrate or only slightly through the openings 5 in the cavities 7.
- the printing substance 200 covers the surface 3 and at the same time penetrates through the openings 5 into the cavities 7.
- the contact angle between the printing substance and the surface is less than 90 °, preferably less than 45 °.
- FIG. 4 is a detailed representation of a surface of another printing form 1 according to the invention shown schematically.
- the in Fig. 4 illustrated embodiment substantially corresponds to that in FIG. 2a illustrated embodiment.
- the embodiment differs in that the cavity 7 is surrounded by a sleeve 21.
- the sleeve 21 is part of the heater 19, which can be heated in a particularly advantageous manner and very quickly by the sleeve 21, the gas arranged in the cavity 7, since the entire cavity 7 is surrounded by the sleeve 21, so that the gas of almost can be heated on all sides.
- the printing method according to the invention is described with reference to a printing form 1, which has a surface 3 which is formed as a surface which is readily wettable for the printing substance 200. Furthermore, the wall surface 13a in the wall region 11 near the opening is also formed as a readily wettable surface.
- the in Figs. 5a-5c illustrated printing form 1 substantially corresponds to the printing form 1, which in Fig. 2a is shown. It differs only in that the surface 3 is formed as a good wettable surface and further on the surface 3 elevations 23 are formed, which act as a spacer for a substrate 100.
- the printing substance 200 is applied to the surface 3 (FIG. 5b). In this case, only so much printing substance 200 is applied that the elevations 23 protrude from the printing substance 200.
- the printing substance 200 wets the surface 3 of the printing plate 1 and partially penetrates through the openings 5 in the cavities 7 a. As a result, the openings 5 of the cavities 7 are sealed gas-tight.
- the roller 102 can be used.
- a printing material 100 rests on the elevations 23 and thus does not touch the printing substance 200 applied to the surface 3.
- a clean print image is achieved since the printing substance 200 can not reach the printing substrate 100 in an uncontrolled manner.
- a doctor blade can be achieved that the ends of the projections 23 are free of printing substance.
- the gas contained in the cavities 7 is heated, whereby an overpressure arises, which pushes the printing substance 200 from the cavity 7 and from the openings 5 and flings against the substrate 100.
- the heating of the cavities 7 can be done for example by heating the end pieces 17. This can be done for example by a laser radiation 25, which in Fig. 5c is indicated schematically.
- the material of the end piece 17 absorbs laser radiation of suitable wavelength, whereby the tail is heated.
- the wavelength of the laser radiation and the optical properties of the material of the printing plate 1, which surrounds the cavities can be chosen so that the laser radiation is absorbed mainly by the end piece 17.
- the tail 17 may include, for example, finely divided metallic inclusions which absorb laser radiation by exciting plasmons. It can be provided in an advantageous manner that the material of the printing form does not absorb the selected laser radiation, whereby it can be focused through the material on selected end pieces 17 to specifically heat the gas filling in the associated cavities 7. Similarly, the sleeves 21 in the in Fig. In fig. 4 embodiment shown are heated.
- the thermal conductivity of the end piece 17 or the sleeve 21 is better than the thermal conductivity of the material of the printing plate 1, whereby the heat input is reduced in the material of the printing form 1, when the end piece 17 or the sleeve 21, the absorbed laser radiation is heated.
- FIGS. 6a and 6b show a further embodiment of a printing form 1 according to the invention with elevations 23.
- the elevations 23 are located on the surface 3 of the printing form 1 and may be of different sizes.
- the surface 3 of the printing plate 1 has openings 5 with adjoining cavities 7 via the exemplary embodiments described above.
- the cavities 7 are formed as blind holes, which have a large aspect ratio (depth of the blind hole divided by its diameter). This means that there is a large volume of gas in the cavity, which can be heated. As a result, the printing substance can be spun on the printing material in an advantageous manner, since a powerful gas stream can be generated.
- the elevations 23 are not arranged uniformly on the surface 3.
- the elevation 23 is formed by the roughness of the surface 3.
- the openings 5 are not arranged exclusively in the surface 3 between the elevations 23, but also in the surface of the elevations 23 itself. As a result, a very fine grid of openings 5 are formed, leaving only small open spaces that pass through the tips of the Elevations 23 are formed, with which no pressure can take place.
- the surface 3 and wall surface in the cavities 7 is formed as a good wettable surface.
- Fig. 6b the printing form of FIG. 6a with applied printing substance 200 is shown.
- the pointed elevations 23 are not covered with printing substance 200. This can be achieved, for example, by stripping by means of a doctor blade. This will ensure that a laid out Substrate can not reach direct contact with the applied printing substance 200.
- Printing forms as shown in Figs. 6a and 6b can be produced, for example, in an electrolyte by anodic oxidation of aluminum plates, the blind holes forming themselves in a matrix of aluminum oxide by self-assembly.
- the printing plate 1 produced by this method has cavities in the form of blind holes with a diameter of about 400 nm and a depth of about 100 pm, wherein the distances between the openings 5 of the blind holes amount to about 500 nm.
- Large elevations 23 have, for example, a height of about 0.5 pm and a mean distance between adjacent large elevations of about 150 pm.
- the enclosure of the cavities consists in such a printing form of anions enriched with alumina, which encloses the cavities in a sleeve shape.
- the matrix of the printing form surrounding the sleeve is formed by pure aluminum oxide.
- the laser radiation with a wavelength of 808 nm is absorbed by these sleeves.
- suitable coatings of the wall surfaces of the cavities 7, their wetting properties for the printing substance can be predetermined, whereby the barrier for wetting described above is achieved.
Landscapes
- Printing Methods (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013218961.3A DE102013218961A1 (en) | 2013-09-20 | 2013-09-20 | Apparatus and method for transferring flowable printing substances to a printing substrate |
PCT/EP2014/068936 WO2015039892A1 (en) | 2013-09-20 | 2014-09-05 | Device and method for transferring flowable printing substances onto a printing material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3046773A1 true EP3046773A1 (en) | 2016-07-27 |
EP3046773B1 EP3046773B1 (en) | 2017-11-08 |
Family
ID=51542336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14766417.1A Active EP3046773B1 (en) | 2013-09-20 | 2014-09-05 | Device and method for transferring flowable printing substances onto a printing material |
Country Status (4)
Country | Link |
---|---|
US (1) | US10000085B2 (en) |
EP (1) | EP3046773B1 (en) |
DE (1) | DE102013218961A1 (en) |
WO (1) | WO2015039892A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021154371A1 (en) * | 2020-01-27 | 2021-08-05 | University Of Virginia Patent Foundation | Method and system for transfer printing of films |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4729310A (en) * | 1982-08-09 | 1988-03-08 | Milliken Research Corporation | Printing method |
DE3705988A1 (en) * | 1987-02-20 | 1988-10-06 | Stefan Bruees | Copy printing method for the defined manufacture of very fine structures |
US4797693A (en) * | 1987-06-02 | 1989-01-10 | Xerox Corporation | Polychromatic acoustic ink printing |
DE4137337A1 (en) * | 1991-11-13 | 1993-05-19 | Sengewald Karl H Gmbh | HIGH PRESSURE METHOD AND APPLICATION DEVICE FOR ITS IMPLEMENTATION |
DE19718906A1 (en) * | 1997-05-05 | 1999-09-23 | Udo Lehmann | Laser intaglio printing method |
DE19746174C1 (en) * | 1997-10-18 | 1999-07-08 | Udo Dr Lehmann | Printing cylinder |
AU3044400A (en) | 1999-01-04 | 2000-07-24 | Heidelberger Druckmaschinen Ag | Method, device and printing mould for conveying free-flowing printing ink onto aprintable substance |
JP3572570B2 (en) | 1999-02-01 | 2004-10-06 | オーテックス株式会社 | Polymerization initiator for cationically polymerizable organic substances |
DE10213012B4 (en) * | 2001-08-01 | 2011-08-11 | Heidelberger Druckmaschinen AG, 69115 | Method for producing a printing form |
US9126450B2 (en) * | 2009-07-28 | 2015-09-08 | Xerox Corporation | Offset printing process using light controlled wettability |
US20120103218A1 (en) * | 2010-10-29 | 2012-05-03 | Palo Alto Research Center Incorporated | Method of Ink Rheology Control in a Variable Data Lithography System |
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2013
- 2013-09-20 DE DE102013218961.3A patent/DE102013218961A1/en active Granted
-
2014
- 2014-09-05 WO PCT/EP2014/068936 patent/WO2015039892A1/en active Application Filing
- 2014-09-05 US US15/023,117 patent/US10000085B2/en active Active
- 2014-09-05 EP EP14766417.1A patent/EP3046773B1/en active Active
Non-Patent Citations (2)
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Also Published As
Publication number | Publication date |
---|---|
US20160229213A1 (en) | 2016-08-11 |
WO2015039892A1 (en) | 2015-03-26 |
DE102013218961A1 (en) | 2015-03-26 |
US10000085B2 (en) | 2018-06-19 |
EP3046773B1 (en) | 2017-11-08 |
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