EP1033420A1 - Verfahren und Vorrichtung zum elektrochemischen Aufrauhen eines Trägers für lichtempfindliche Schichten - Google Patents
Verfahren und Vorrichtung zum elektrochemischen Aufrauhen eines Trägers für lichtempfindliche Schichten Download PDFInfo
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- EP1033420A1 EP1033420A1 EP00104028A EP00104028A EP1033420A1 EP 1033420 A1 EP1033420 A1 EP 1033420A1 EP 00104028 A EP00104028 A EP 00104028A EP 00104028 A EP00104028 A EP 00104028A EP 1033420 A1 EP1033420 A1 EP 1033420A1
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- Prior art keywords
- electrode
- carrier
- phase
- current density
- alternating
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
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- 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
- B41N3/00—Preparing for use and conserving printing surfaces
- B41N3/03—Chemical or electrical pretreatment
- B41N3/034—Chemical or electrical pretreatment characterised by the electrochemical treatment of the aluminum support, e.g. anodisation, electro-graining; Sealing of the anodised layer; Treatment of the anodic layer with inorganic compounds; Colouring of the anodic layer
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/04—Etching of light metals
Definitions
- the invention relates to a method and a device for electrochemically roughening a Support for light-sensitive layers, the surface of which is electrochemical or mechanical and then electrochemically in an aqueous electrolyte bath by applying an alternating or Drelistromes is roughened on electrodes opposite electrodes, the carrier is continuously passed through the electrolyte bath.
- Such carriers are used for the production of presensitized printing plates
- the Material of the carrier which is processed in plate or tape form, is a metal in particular Aluminum.
- the roughening of, for example, aluminum strips for the production of Printing plates are made mechanically, chemically or electrochemically or in a combination of these Roughening process.
- the aim is to ensure that the water supply and liability of the aluminum surface used a certain structure and photosensitive layer Has uniformity.
- the surface structures When mechanically roughened, have pyramid-like shapes, and have different orientations in the longitudinal and transverse directions on (anisotropy) while electrochemically roughened aluminum surfaces a sponge-like Structure with many wells and depressions with uniform geometry in longitudinal and Have transverse direction (isotropy).
- the surface of the not roughened Printing plate carrier shows a non-linear behavior electrically.
- Cause of this nonlinear Behavior can consist of both organic and inorganic material Layers.
- the aluminum oxide layer is particularly useful for aluminum printing plate supports on the surface is a layer that is non-linear until complete removal behaves.
- the resistance of the surface of the printing plate carrier decreases. Assigns part of Surface has a lower resistance, the current flows preferentially through this part of the Surface, and not by the part of the surface that has higher resistance. The higher one Current now leads to a further decrease in resistance. This drop is bigger than that Reduction of the resistance at the points on the surface through which a lower current flows. This further increases the differences in the surface resistance.
- the current density changes depending on the surface resistance of the carrier electrical cross-cuts on the carrier, which are visible in strip form.
- the Stripes correspond to the current distribution, which is predetermined by the shape of the inlet electrode.
- the alternating or three-phase current applied to the electrodes i.e. depending on whether there is first a If there is a positive or negative half-wave, the cross-cuts occur.
- the cross passages in strip form reduce the visual impression and, in the case of a particularly strong expression, also the Quality of the product.
- the formation of these transverse or current strips increases with a high current density in the electrolyte bath at the beginning of the electrochemical roughening.
- the electrical behavior of the Pressure plate carrier and the electrolyte is at the beginning of the roughening, as already above has been mentioned, is not linear and changes with increasing roughening.
- the decrease in Uniformity of the visual impression and the reduction of the print quality, in particular pronounced shape of the cross passages is very useful when mapping high-resolution screens disadvantageous.
- the surface of the Printing plate carrier can, as described in DE 38 42 454 C2, with an additional layer be provided.
- This additional layer eliminates material irregularities balanced, which essentially cause stains. This creates the formation of horizontal stripes although also weakened, the cause of the horizontal stripes is not eliminated, which in the steep Increase in current density when the carrier enters the effective range of the AC electrode lies. Even with a uniform coating, transverse stiffeners form depending on whether first the positive or negative half-wave of the alternating current flows.
- the effort technical equipment is large, since usually an additional one for the application of an oxide layer Electrolyte is required.
- the same electrolyte can also be used to reduce the expenditure are used, however the electrolytes suitable for roughening are usually for one Oxidation or the application of other layers is not suitable or only suitable to a limited extent.
- DE 39 10 450 C2 describes a method for producing a printing plate support, at using the printing plate support surface electrochemically in an acid electrolyte an AC current is roughened, which has a frequency of 80 to 120 Hz, and in which the ratio of anode time to period time is 0.25 to 0.20.
- Such a process requires a high level of circuitry complexity because of the large power output implemented and causes problems in the distribution of the current to the individual electrodes.
- a roughening of the printing plate carrier at certain transport speeds provides constant loading of each part the printing plate support with positive and negative half-waves of the alternating current of the same size, but does not take into account that transverse stripes essentially due to the upcoming half-waves Entry into the zone of AC roughening are formed.
- the known methods and devices take into account or reduce the formation of Horizontal stripes during the complete passage of the printing plate support through the AC roughening zone, do not, however, prevent horizontal stripes from appearing when the Form the pressure plate carrier in the effective range of the AC or three-phase electrodes, because the current density, i.e. the current per unit area on the printing plate carrier, of different sizes is.
- the current density in the electrolyte bath increases over the course a period of alternating or three-phase current less than 20% of the maximum current density.
- a device for performing the method is characterized in that one in the Alternating or three-phase electrode arranged in the electrolytic bath is rounded such that its distance to a carrier transported through the electrolyte bath at an entry point into a Roughening zone of the electrolyte bath is larger than within the roughening zone and that from one predetermined distance from the entry point the distance of the AC or three-phase electrode to the carrier is constant.
- the rounded outline of the AC or three-phase electrode a parabolic section to which a straight section connects.
- the first AC or three-phase electrode divided into electrode sections and the individual electrode sections consist of materials with different electrical conductivities. Expediently between the Electrode sections and another AC or three-phase electrode insulating plates arranged.
- the advantage of the invention is that the shape, the choice of material and / or the different total resistances from ohmic and / or inductive and capacitive Resistances of the AC or three-phase electrode increase the current density over the course of a Period of the alternating or three-phase current is less than or equal to 20% of the maximum current density, so that there are no cross-cuts or only a very weak formation of cross-cuts.
- the electrolyte in the electrolyte bath 1 can be, for example, dilute aqueous nitric, sulfuric or hydrochloric acid. A combination of 2 or 3 acids can also be used. Of course, other acid baths which are known to the person skilled in the art are also suitable for the electrolyte bath 1. In addition to acid, the electrolyte bath can contain other chemicals, such as salts or surfactants. Before electrochemical roughening, the carrier is usually pretreated with an acid or alkaline pretreatment to remove rolling oils, contaminants and air to remove natural "oxide. The device used for this is not shown.
- the carrier 2 can be mechanically or chemically roughened in a suitable form before it enters the electrolyte bath 1.
- the devices for mechanically roughening the surfaces of the carrier 2 are also not shown. Such systems or devices are described and illustrated, inter alia, in DE-A 19 62 729 and DE-B 19 62 728.
- electrolyte bath 1 In electrolyte bath 1 itself, only an electrochemical roughening of the surface of carrier 2 takes place arranged in the electrolytic bath 1 are electrodes 3, 4, 5, which are connected to three windings (not shown in more detail) on a secondary side of a three-phase transformer 6.
- the corresponding three windings on the primary side of the three-phase transformer 6 are connected to control transformers (not shown) via lines L1, L2, L3, which are fed by a common power transformer for three-phase current , connected. It is also possible that the lines L1, L2, L3 are connected directly to the power transformer, omitting the regulating transformers. If no further measures are taken, electric shocks or electrical cross-shocks occur at high carrier speeds 2, which are caused by the high current density increase in the electrolyte between the first three-phase electrode 3 and the carrier 2. 2, there are two AC electrodes 7 and 8 in an electrolyte bath 1, which are connected to a secondary winding U2 of an AC transformer 9. It also applies here that due to the high increase in current density in the electrolyte between the first AC electrode 7 and the carrier 2, electric shocks or electrical cross-shocks occur at high transport speeds of the carrier if no further measures are taken.
- each the first AC or three-phase electrode by shaping or special Selection of materials with different conductivities and / or electrode sections with different electrical properties due to ohmic, inductive and capacitive Resistors connected to the electrode sections are designed so that the increase in Current density over a period of alternating or three-phase current less than 20% of maximum current density.
- a slight change in the alternating or three-phase current occurs because of the small different conductivity on the surface of the carrier barely noticeable. Those Surface parts of the carrier that are not due to the AC or three-phase current originally applied or have just experienced a small drop in resistance will be with the same current density acts on those parts of the surface where the reduction in resistance is somewhat greater was. Because of the slight change in alternating or three-phase current, there is only one slight distinction in the absolute values of the conductivities of different surface parts of the carrier. The conductivities differ from each other, but because of the small differences in current, these differences are not very noticeable. In other words this means that the enhancement or the reduction of the conductivities at different Surface parts of the carrier are insufficient for the formation of transverse blows or is the formation of cross-cuts so low that it is hardly recognizable.
- FIG. 3 is the first embodiment of the device according to the invention only shows a first AC or three-phase electrode 10 in an electrolyte bath 1.
- the first AC or three-phase electrode 10 is rounded or curved, in Contrary to the respective first three-phase or alternating current electrode 3 or 7 according to the devices known for the roughening of supports 2, as shown in the prior art 1 and 2 are shown schematically.
- the three-phase or alternating current electrodes shown there generally have an elongated rectangular cross-section. As before, this leads It was stated above that the increase in current density between these electrodes and the carrier 2 is very large when the carrier 2 enters the roughening zone and this to the unwanted cross-cuts. If from an AC or three-phase electrode in the further Course of the description, it is to be understood that this electrode either is supplied with three-phase current or alternating current, as is shown in FIGS. 1 and 2 has been described.
- the alternating or three-phase electrode 10 immersed in the electrolytic bath 1 is rounded in such a way that its distance d 1 to the carrier 2 transported through the electrolytic bath 1 is greater at an entry point B than within the roughening zone.
- the distance of the AC or three-phase electrode 10 from the carrier 2 decreases in the transport direction A of the carrier 2, as can be seen from the distances d 2 and d 3 .
- the resistance predetermined by the electrolyte located between them is greater than at the points with the distances d 2 and d 3 . Accordingly, the current densities then increase with increasing distances d 2 and d 3 .
- the rounded outline of the AC or three-phase electrode 10 is composed of a parabolic section C and an adjoining rectilinear section D.
- the rounding of the AC or three-phase electrode 10 can also have a curve shape other than a parabolic shape.
- the reduction in the electrical resistance in the electrolyte between the AC or three-phase electrode 10 and the carrier 2 leads to a gradual increase in the current density. Due to the large distance d 1 of the AC or three-phase electrode 10 from the carrier 2 at the beginning of the roughening zone, less current flows than is the case with the smaller distance d 2 or d 3 . Due to the small increase, the characteristics of points with low and higher surface resistance are less than with a steep increase in current density.
- a second embodiment of the device according to the invention is shown schematically in FIG. 4 shown.
- a first AC or three-phase electrode is in electrode sections 21, 22, 23 divided.
- the electrode sections can be designed in such a way that those facing the carrier 2 Surfaces 18, 19, 20 flat or sawtooth-shaped cross-section, formed from rectangles or Trapezoids, e.g. quickly dissipate the gas bubbles generated in the electrolyte bath.
- the carrier 2 is transported through the electrolyte bath 1 in the transport direction A.
- the A further AC or three-phase electrode 4 follows electrode sections 21, 22, 23 Electrode sections 21, 22, 23 are made of materials that are different electrical Can have conductivities to each other and to the AC or three-phase electrode 4 have different conductivity.
- the third embodiment of the device according to the invention shown in FIG. 5 comprises a first AC or three-phase electrode, which is divided into electrode sections 31, 32, 33, the are electrically isolated from each other.
- the carrier 2 is in the transport direction A by the Electrolyte bath 1 transported through. Another is connected to the electrode sections 31, 32, 33 AC or three-phase electrode 4. If the electrode sections and the electrode 4 with Three-phase current is applied, there is still another, not shown, in the electrolyte bath 1 Three-phase electrode available.
- Each of the electrode sections 31, 32, 33 is fixed or variable ohmic resistor 12, 13, 14 connected in series (as shown) or in parallel are switched. Depending on whether it is AC or three-phase electrodes, the are Resistors 12, 13, 14 via a connection 11 with an alternating or not shown Three-phase source connected.
- the current density per unit area of the individual electrode sections 31, 32, 33 is less than the current density per unit area of the AC or three-phase electrode 4.
- the specific ohmic resistance of the electrode sections 31, 32, 33, the electrolyte and the fixed or variable resistors 12, 13, 14 determine the respective current density in Electrolytes between the surfaces 18, 19 and 20 and the carrier 2.
- a fourth embodiment of the device is shown schematically in FIG. 6.
- the formation of the first AC or three-phase electrode is similar to that of the second and third embodiments.
- This first AC or three-phase electrode is divided into electrode sections 24, 25, 26 which are arranged isolated from each other in the electrolytic bath 1.
- a of the carrier 2 connects a further AC or three-phase electrode 27.
- Between the electrode sections and the further electrode 27 are insulating plates 28, 29 and 30.
- Each of the Electrode sections 24, 25, 26 are connected to electrical components 34, 35, 36, each of which contains an ohmic resistor and / or inductive and capacitive resistor.
- the component 34 is made of ohmic and / or inductive and capacitive resistance of the electrode section 24 with the components 35, 36 of the other electrode sections 25, 26 connected in series or in parallel and together with them via a connection 37 to an AC or three-phase source connected.
- Electrode sections 24, 25, 26 are made up of the reactances of the inductors and Capacities in the components 34, 35, 36 together, which are indicated schematically in Fig. 6, and the ohmic resistors.
- the AC resistance is equal to the root from the sum of the squares of ohmic resistance and reactance.
- the through the Reactive power caused by reactive currents is not converted into heat.
- the Surface resistance of the support 2 which is essentially an ohmic resistance
- the Change in reactance may be less than with a purely ohmic total resistance of the individual component would be the case.
- Fig. 7 shows a fifth embodiment of the device, in which the first change or Three-phase electrode 40 is formed in one piece in the electrolyte bath 1 and an elongated rectangular Has cross section.
- the carrier 2 is in the transport direction A through the electrolyte bath 1 below of perforated elements 38, 39; 41.42; 43, 44 passed through.
- These perforated elements are in Fig. 8 executed as pairs for the purpose of adjustability. You are between the first AC or three-phase electrode 40 and the carrier 2.
- the pairs of elements are as in Fig. 8 shown, slidable against each other.
- the elements 38, 39; 41, 42; 43, 44 exist, for example from plates that have rows of holes 47, 48. In the starting position of the elements, the overlap Row of holes 47, 48.
- the plates can be moved in such a way that the Transport direction A of the carrier 2 first pair of elements 38, 39 a smaller coverage of the Has rows of holes 47, 48 as the next succeeding pair of elements 41, 42.
- the elements 43, 44 are then, for example, completely covered by the rows of holes 47, 48, so that then the current density in the electrolyte between the AC or three-phase electrode 40 and the carrier 2 is largest.
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
Description
- Fig. 1 und 2
- schematisch Vorrichtungen zum elektrochemischen Aufrauhen mit Wechsel- oder Drehstrom gemäß dem Stand der Technik,
- Fig. 3
- schematisch eine Wechsel- oder Drehstromelektrode einer ersten Ausführungsform der Vorrichtung nach der Erfindung
- Fig. 4
- schematisch eine zweite Ausführungsform der Wechsel- oder Drehstromelektrode, die Elektrodenabschnitte aus unterschiedlich leitfähigen Materialien aufweist, in einer erfindungsgemäßen Vorrichtung,
- Fig. 5
- eine dritte Ausführungsform der Wechsel- oder Drehstromelektrode, deren Elektrodenschnitte mit festen oder variablen ohmschen Widerständen verbunden sind, in einer erfindungsgemäßen Vorrichtung,
- Fig. 6
- eine vierte Ausführungsform der Wechsel- oder Drehstromelektrode, deren Elektrodenabschnitte mit Gesamtwiderständen aus ohmschen und/oder induktiven oder kapazitiven Widerständen verbunden sind, in einer erfindungsgemäßen Vorrichtung,
- Fig. 7
- eine fünfte Ausführungsform einer Wechsel- oder Drehstromelektrode mit Paaren von gelochten Elementen, die zwischen der Elektrode und einem durch das Elektrolytbad hindurchtransportierten Träger in der erfindungs gemäßen Vorrichtung angeordnet sind, und
- Fig. 8
- eine Draufsicht auf ein Paar von gelochten Platten, die zwischen einer Wechsel- oder Drehstromelektrode und einem Träger angeordnet sind.
Claims (17)
- Verfahren zum elektrochemischen Aufrauhen eines Träges für lichtempfindliche Schichten, dessen Oberfläche elektrochemisch oder mechanisch und anschließend elektrochemisch in einem wäßrigen Elektrolytbad durch Anlegen eines Wechsel- oder Drehstromes an dem Träger gegenüberliegenden Elektroden aufgerauht wird, wobei der Träger kontinuierlich durch das Elektrolytbad hindurchgeführt wird, dadurch gekennzeichnet, daß an einer Eintrittsstelle des Trägers in die Aufrauhzone die Stromdichte im Elektrolytbad zwischen einer ersten Wechsel- oder Drehstromelektrode und dem Träger niedriger als eine maximale Stromdichte für die Aufrauhung ist und daß die Stromdichte mit zunehmender Entfernung von der Eintrittsstelle innerhalb des Bereichs der ersten Wechsel- oder Drehstromelektrode kontinuierlich auf die maximale Stromdichte ansteigt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Anstieg der Stromdichte im Elektrolytbad im Verlauf einer Periode des Wechsel- oder Drehstroms weniger als 20% der maximalen Stromdichte beträgt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Abstand der ersten Wechsel-oder Drehstromelektrode zu dem Träger von der Eintrittsstelle in die Aufrauhzone in Transportrichtung des Trägers bis zum Erreichen eines vorgegebenen konstanten Abstandes kontinuierlich abnimmt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die erste Wechsel- oder Drehstromelektrode in Elektrodenabschnitte aus unterschiedlichen Materialien unterteilt wird, deren spezifischen elektrischen Leitfähigkeiten sich voneinander unterscheiden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die erste Wechsel- oder Drehstromelektrode in Elektrodenabschnitte unterteilt wird, und daß jeder Elektrodenabschnitt an einen festen oder variablen ohmschen Widerstand angeschlossen wird, wobei die Größe der Widerstände so gewählt wird, daß die Stromdichte im Elektrolytbad in Transportrichtung des Trägers zunimmt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die erste Wechselstrom- oder Drehstromelektrode in Elektrodenabschnitte unterteilt wird und daß jeder Elektrodenabschnitt mit ohmschen und/oder induktiven und kapazitiven Widerständen verbunden wird, wobei der Gesamtwiderstand des einzelnen Elektrodenabschnitts aus ohmschen und Blindwiderständen aus Induktivitäten und Kapazitäten so gewählt wird, daß die Stromdichte im Elektrolytbad in Transportrichtung des Trägers zunimmt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß sich zwischen der ersten Wechsel-und Drehstromelektrode und dem Träger gelochte Elemente oder Paare von gelochten Elementen befinden, deren Leitfähigkeit kleiner als die Leitfähigkeit des Elektrolytbades gewählt wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Elemente eines Paares gegeneinander versetzbar ausgestaltet werden.
- Vorrichtung zur Durchführung des Verfahrens nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß eine in dem Elektrolytbad (1) angeordnete Wechsel- oder Drehstromelektrode (10) derart abgerundet ist, daß ihr Abstand (d1) zu einem durch das Elektrolytbad hindurchtransportierten Träger (2) an einer Eintrittsstelle (B) in eine Aufrauhzone des Elektrolytbades größer ist als innerhalb der Aufrauhzone und daß ab einer vorgegebenen Entfernung von der Eintrittsstelle (B) der Abstand der Wechsel- oder Drehstromelektrode zu dem Träger (2) konstant ist.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß der abgerundete Umriß der Wechsel- oder Drehstromelektrode (10) einen parabelförmigen Abschnitt (C) aufweist, an den ein geradliniger Abschnitt (D) anschließt.
- Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die erste Wechsel- oder Drehstromelektrode in Elektrodenabschnitte (21, 22, 23) unterteilt ist, und daß die einzelnen Elektrodenabschnitte aus Materialien mit unterschiedlichen elektrischen Leitfähigkeiten bestehen.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Elektrodenabschnitte (21, 22, 23) und eine weitere Wechsel- oder Drehstromelektrode (4) aneinander angrenzen.
- Vorrichtung zur Durchführung des Verfahrens nach einem oder mehreren der Ansprüche 1 bis 3 und 5, dadurch gekennzeichnet, daß die erste Wechsel- oder Drehstromelektrode in Elektrodenabschnitte (31, 32, 33) unterteilt ist und daß jeder der Elektrodenabschnitte (31, 32, 33) mit einem festen oder variablen ohmschen Widerstand (12; 13; 14) verbunden ist, wobei diese Widerstände (12, 13, 14) an einer Wechsel- oder Drehstromquelle angeschlossen sind.
- Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß zwischen den Elektrodenabschnitten (31,32,33) und einer weiteren Wechsel- oder Drehstromelektrode (4) Isolierplatten (15, 16, 17) angeordnet sind und daß die Stromdichte je Flächeneinheit der einzelnen Elektrodenabschnitte (31; 32; 33) kleiner als die der Wechsel- oder Drehstromelektrode (4) ist.
- Vorrichtung zur Durchführung des Verfahrens nach einem oder mehreren der Ansprüche 1 bis 3, 5 und 6, dadurch gekennzeichnet, daß die erste Wechsel- oder Drehstromelektrode in Elektrodenabschnitte (24, 25, 26) unterteilt ist, die voneinander isoliert sind und daß jeder der Elektrodenabschnitte (24, 25, 26) mit einem elektrischen Bauteil (34, 35, 36) verbunden ist, das jeweils einen ohmschen Widerstand und/oder induktiven und kapazitiven Widerstand enthält, wobei das Bauteil (34) aus ohmschen und/oder induktiven und kapizitiven Widerständen des Elektrodenabschnitts (24) mit den Bauteilen (35, 36) der übrigen Elektrodenabschnitte (25, 26) in Reihe oder parallel geschaltet und mit diesen an eine Wechsel- oder Drebstromquelle angeschlossen ist.
- Vorrichtung zur Durchführung des Verfahrens nach einem oder mehreren der Ansprüche 1 bis 3, 7 und 8, dadurch gekennzeichnet, daß Paare von gelochten Elementen (38, 39; 41, 42; 43, 44) zwischen einer ersten Wechsel- oder Drehstromelektrode (40) und einem Träger (2) angeordnet sind, daß die Paare von Elementen voneinander beabstandet sind und daß die Elemente eines jeden Paares gegeneinander verschiebbar sind.
- Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, daß die Elemente (38, 39; 41, 42; 43, 44) aus Platten bestehen, die Lochreihen (47; 48) aufweisen, die sich in einer Ausgangsstellung decken und daß die eine Platte gegenüber der anderen Platte eines Paares quer zur Transportrichtung (A) des Trägers (2) soweit verschiebbar ist, so daß sich die Lochreihen (47; 48) nur noch teilweise oder nicht überdecken.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE19908884 | 1999-03-02 | ||
DE19908884A DE19908884C1 (de) | 1999-03-02 | 1999-03-02 | Verfahren und Vorrichtung zum elektrochemischen Aufrauhen eines Trägers für lichtempfindliche Schichten |
Publications (2)
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EP1033420A1 true EP1033420A1 (de) | 2000-09-06 |
EP1033420B1 EP1033420B1 (de) | 2004-01-28 |
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Application Number | Title | Priority Date | Filing Date |
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EP00104028A Expired - Lifetime EP1033420B1 (de) | 1999-03-02 | 2000-02-26 | Verfahren und Vorrichtung zum elektrochemischen Aufrauhen eines Trägers für lichtempfindliche Schichten |
Country Status (4)
Country | Link |
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US (1) | US6423206B1 (de) |
EP (1) | EP1033420B1 (de) |
JP (1) | JP2000303200A (de) |
DE (1) | DE19908884C1 (de) |
Cited By (1)
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EP1318216A2 (de) * | 2001-12-05 | 2003-06-11 | Fuji Photo Film Co., Ltd. | Elektrolysegerät |
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KR100412042B1 (ko) * | 2001-06-05 | 2003-12-24 | 김찬배 | 인쇄 ps판 제조용 알루미늄판의 연마장치 |
US8070933B2 (en) * | 2005-05-06 | 2011-12-06 | Thielenhaus Microfinishing Corp. | Electrolytic microfinishing of metallic workpieces |
US7981259B2 (en) * | 2006-06-14 | 2011-07-19 | Applied Materials, Inc. | Electrolytic capacitor for electric field modulation |
DE602006009919D1 (de) * | 2006-08-03 | 2009-12-03 | Agfa Graphics Nv | Flachdruckplattenträger |
JP5164640B2 (ja) | 2008-04-02 | 2013-03-21 | 富士フイルム株式会社 | 平版印刷版原版 |
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US4272342A (en) * | 1979-08-15 | 1981-06-09 | Fuji Photo Film Co., Ltd. | Electrolytic graining method |
DE3142488A1 (de) * | 1981-10-27 | 1983-05-05 | Klein, Klaus, Ing.(grad.), 3360 Osterode | Methode zur elektrolytischen aufrauhung von aluminiumplatten oder baendern mittels wechselstrom und konstantem kathodischem potential |
JPS63268239A (ja) * | 1987-04-27 | 1988-11-04 | Matsushita Electric Ind Co Ltd | アルミ電解コンデンサの電極製造法 |
EP0585586A1 (de) * | 1992-07-20 | 1994-03-09 | Fuji Photo Film Co., Ltd. | Verfahren zur elektrolytischen Behandlung |
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NL7017765A (de) | 1969-12-15 | 1971-06-17 | ||
DE1962729A1 (de) * | 1969-12-15 | 1971-06-16 | Kalle Ag | Verfahren zum Koernen von Oberflaechen fuer Flachdruckplatten |
US3851421A (en) | 1969-12-15 | 1974-12-03 | Hoechst Ag | Apparatus for graining surfaces of planographic printing plates |
JPH07119152B2 (ja) * | 1987-12-18 | 1995-12-20 | 富士写真フイルム株式会社 | 平版印刷版用アルミニウム支持体の電解粗面化処理方法 |
JPH0798430B2 (ja) | 1988-03-31 | 1995-10-25 | 富士写真フイルム株式会社 | 印刷版用アルミニウム支持体の製造方法 |
US5271818A (en) | 1989-03-30 | 1993-12-21 | Hoechst Aktiengesellschaft | Apparatus for roughening a substrate for photosensitive layers |
DE3910213A1 (de) | 1989-03-30 | 1990-10-11 | Hoechst Ag | Verfahren und vorrichtung zum aufrauhen eines traegers fuer lichtempfindliche schichten |
US6080288A (en) * | 1998-05-29 | 2000-06-27 | Schwartz; Vladimir | System for forming nickel stampers utilized in optical disc production |
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1999
- 1999-03-02 DE DE19908884A patent/DE19908884C1/de not_active Expired - Lifetime
-
2000
- 2000-02-26 EP EP00104028A patent/EP1033420B1/de not_active Expired - Lifetime
- 2000-03-01 US US09/516,805 patent/US6423206B1/en not_active Expired - Lifetime
- 2000-03-02 JP JP2000057452A patent/JP2000303200A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US4272342A (en) * | 1979-08-15 | 1981-06-09 | Fuji Photo Film Co., Ltd. | Electrolytic graining method |
DE3142488A1 (de) * | 1981-10-27 | 1983-05-05 | Klein, Klaus, Ing.(grad.), 3360 Osterode | Methode zur elektrolytischen aufrauhung von aluminiumplatten oder baendern mittels wechselstrom und konstantem kathodischem potential |
JPS63268239A (ja) * | 1987-04-27 | 1988-11-04 | Matsushita Electric Ind Co Ltd | アルミ電解コンデンサの電極製造法 |
EP0585586A1 (de) * | 1992-07-20 | 1994-03-09 | Fuji Photo Film Co., Ltd. | Verfahren zur elektrolytischen Behandlung |
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DATABASE WPI Section Ch Week 198850, Derwent World Patents Index; Class L03, AN 1988-357310, XP002140989 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1318216A2 (de) * | 2001-12-05 | 2003-06-11 | Fuji Photo Film Co., Ltd. | Elektrolysegerät |
EP1318216A3 (de) * | 2001-12-05 | 2006-05-31 | Fuji Photo Film Co., Ltd. | Elektrolysegerät |
Also Published As
Publication number | Publication date |
---|---|
DE19908884C1 (de) | 2000-10-05 |
US6423206B1 (en) | 2002-07-23 |
JP2000303200A (ja) | 2000-10-31 |
EP1033420B1 (de) | 2004-01-28 |
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