EP0704320B1 - Procédé pour rendre rugueux par moyens mécaniques la surface d'un support pour l'impression et brosse cylindrique à cet effet - Google Patents

Procédé pour rendre rugueux par moyens mécaniques la surface d'un support pour l'impression et brosse cylindrique à cet effet Download PDF

Info

Publication number
EP0704320B1
EP0704320B1 EP95114953A EP95114953A EP0704320B1 EP 0704320 B1 EP0704320 B1 EP 0704320B1 EP 95114953 A EP95114953 A EP 95114953A EP 95114953 A EP95114953 A EP 95114953A EP 0704320 B1 EP0704320 B1 EP 0704320B1
Authority
EP
European Patent Office
Prior art keywords
brush
brush strips
fibres
brushing roller
metal wires
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.)
Expired - Lifetime
Application number
EP95114953A
Other languages
German (de)
English (en)
Other versions
EP0704320A1 (fr
Inventor
Stephan J. W. Dr. Platzer
Walter Dipl.-Phys. Mackert
Rudolf Dr. Dipl.-Chem. Neubauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0704320A1 publication Critical patent/EP0704320A1/fr
Application granted granted Critical
Publication of EP0704320B1 publication Critical patent/EP0704320B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/04—Graining or abrasion by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S15/00—Brushing, scrubbing, and general cleaning
    • Y10S15/06—Varied composition bristle

Definitions

  • the invention relates to a method for mechanically roughening the surface a printing plate support made of aluminum or an aluminum alloy Wet brushes and a brush roller to carry out the process.
  • the production of supports for photosensitive printing plates requires a Roughening the support surface, which generally happens in the way that first mechanically and then electrochemically in an electrolyte is roughened.
  • the mechanical roughening can be done by wire brushing, sandblasting, Wet and dry brushing techniques, ball milling and the like Techniques are done.
  • the printing process is essentially using a printing plate with a flat surface.
  • the pressure plate is roughened and chemical treatment, whether it's a purely chemical treatment in a solution or an electrochemical treatment, prepared so that a printing surface is obtained in the printing areas only accepts the oily ink and rejects water and vice versa takes on water in the non-printing areas and repels the ink.
  • the processed printing plate is moistened to carry out the printing process and applied the ink. Then the printing plate is used for offset printing pressed against a rubber pad that is through the ink transfers the colored print image onto the paper to be printed or at direct printing pressed directly against the paper. It will be high quality We strive for images that are without any noticeable preferred direction should.
  • An undesirable direction can occur if the surface the printing plate has a non-uniform structure. Furthermore, strived to produce consistent, high quality images when the same Printing plate and the same type of printing plate can be used. A not Reproducible image can occur when the surface of the printing plate is not of constant quality or its surface quality in the case of high print runs does not maintain.
  • a photosensitive printing plate is made by applying a photosensitive Layer on a roughened carrier, which is generally aluminum or made of an aluminum alloy. As mentioned before the surface becomes either mechanical, purely chemical, electrochemical or roughened in combination of two or three of these techniques. An etching, anodizing, usually follows the roughening and a treatment of the surface that makes it hydrophilic if it is should be required. Finally, a light-sensitive layer is roughened on the Surface applied to obtain a presensitized printing plate. This is exposed imagewise using actinic rays, developed and preserved, to get a processed printing plate, which is then in a printing press assembled for printing.
  • a brush roller is known from US Pat. No. 4,714,528, column 4, lines 45 to 66, which is used in wet brushing.
  • a support made of aluminum or an aluminum alloy containing 99% by weight of aluminum and small amounts of silicon, iron, copper, zinc, manganese, magnesium, chromium, lead, bismuth, calcium, indium, galium, nickel and the like is included a slurry under high liquid pressure, which slants against the surface of the support.
  • the slurry contains finely ground powder of abrasive substances and, if necessary, may also contain an acid or a base.
  • the brush roller consisting of nylon fibers, polypropylene fibers, animal hair, steel wire or the like, and the fibers or bristles having a uniform length and being evenly distributed on the base part of the brush roller.
  • the length of the bristles or fibers is 10 to 150 mm and the diameter of the individual fibers or wires ranges from 0.1 mm to 1.5 mm.
  • the brush roller is moved at a speed in the range of 200 to 2000 revolutions per minute.
  • the abrasive slurry is sprayed onto the carrier under high liquid pressure through a spray nozzle before the carrier passes the brush rollers which are pressed against the carrier so that the carrier surface is roughened with constant pressure between the support rollers and the brush rollers.
  • the roughened surface of an aluminum carrier has an average roughness R a of 0.3 to approximately 1.2 ⁇ m, in particular 0.35 to 0.8 ⁇ m.
  • EP-A-0 595 179 describes a method for roughening aluminum plates described using two types of nylon bristle brushes will.
  • the two types of brush differ in their different Bristle diameter from each other, the brushes with the smaller bristle diameter in the range of 0.10 to 0.34 mm in the final brush roughening step are used and the brushes with the larger bristle diameter Pre-roughen from 0.57 to 1.20 mm. Both before the pre-roughening and the final roughening step each become a slurry from abrasive particles on the surface of the aluminum plate upset.
  • the object of the invention is a wet brushing method for roughening carrier materials for printing plates to improve and develop so that very obtain uniform center-line roughness values without pronounced directional orientation and that only a slight wear of the brush roller material in Comparison to known brush rollers occurs.
  • a brush roller used in the process can be created at constant center roughness a longer service life than conventional brush rollers owns.
  • This object is achieved according to the method in such a way that at the same time Use of organic fibers and metal wires arranged side by side, with a slurry of 5 to 80% by weight of abrasive particles in Water that is brushed wet.
  • the ratio of the organic fibers is too the metal wires in the range of 0.01 to 10.
  • the ratio of is preferably organic fibers to the metal wires in the range of 0.05 to 5, in particular it is 0.1 to 1.0.
  • the particle size in the slurry is 1 to 500 ⁇ m, in particular 20 to 50 ⁇ m.
  • the wet brushing is carried out in such a way that the mechanically measured mean roughness values R a differ from one another in the running direction of the printing plate carrier and transversely to the running direction by a maximum of 14%, based on R a in the running direction.
  • the mean roughness values R a in the running direction are in the range from 0.32 to 0.47 ⁇ m and the mean roughness values R a in the direction of the running direction are in the range from 0.35 to 0.50 ⁇ m. It generally applies that the average roughness values R a can be in each case in the range from 0.2 to 0.6 ⁇ m.
  • a brush roller to perform the procedure, with one of brush strips occupied surface is characterized in that the brush strips contain adjacent organic fibers and metal wires.
  • the brush roller are over the roller surface arranged two groups of brush strips, each Group of brush strips made of a certain material in the form of fibers or wires and the brush strips form a repetitive Pattern from a first number of brush strips of one Group and a second number of brush strips of the other group. It it is also possible that the single brush strip is a mixture of fibers and contains wires and that the fiber material is different from the wire material is.
  • the material of the brush strips is one Group one polymer while the material of the brush strips the other Group is a metal.
  • the single brush strip 2 or 3 consists of a multitude of in the viewing direction Figure 1 successively lined up fibers or wires and extends over the entire width of the brush roller 1, which is perpendicular to Drawing plane of Figure 1 runs.
  • the fibers of a group 4 of the brush strips 2 are polymer fibers and in FIG. 1 with a greater thickness than the wires another group 5 shown.
  • the polymer of the brush strips 2 is made from the group polyamides, polyacrylonitriles, polyesters, polyethylenes, polyimides, polyolefins, Polypropylenes, polyurethanes, polyvinyl chlorides and cellulose derivatives selected.
  • a preferred fiber material for the brush strips 2 are polyamides such as nylon 6, nylon 6.6; Nylon 6.10 and nylon 6.12. To increase the The polyamides are resistant to abrasion with inert particles such as, for example Silicon carbide filled.
  • the metal of the wires of the brush strips 3 is made from the Group of stainless steel, steel, aluminum, brass, bronze, copper, iron and Alloys of these metals selected. Stainless steel is preferred because of its high abrasion resistance and its inexpensive value for the brush strips 3 used.
  • each is the individual brush strips 2 and 3 either only from polymer fibers or only from Metal wires formed while in the second embodiment shown in Figure 2 the brush roller 7 this is not the case.
  • a lower brush strip 8 consists of groups 12 of metal wires 33 and groups 13 of polymer fibers 22.
  • the individual comprises Group 12, for example, two metal wires 33 and the individual group 13 four Polymer fibers 22.
  • the upper brush strip 9 consists of groups 10 of Metal wires 33 and groups 11 of polymer fibers 22, the individual Group 10 each have two metal wires and the individual group 11 each four Has polymer fibers.
  • the number of metal wires or the fibers in the individual groups of the specified Numbers deviate upwards and downwards.
  • Carrier plates or tapes which are essentially in the inventive Processes roughened are made of pure aluminum or an aluminum alloy.
  • the alloy is composed of aluminum as the Main component and small proportions of silicon, iron, copper, zinc, Manganese, magnesium, chromium, lead, bismuth, calcium, indium, gallium, nickel, and the like.
  • the aluminum has a proportion of ⁇ 98% by weight on.
  • the thickness of the aluminum support is in the range between 0.01 and 0.5 mm selected, according to the sizes breaking strength, bending strength, mechanical Resistance, elongation and the like, as for a particular application a lithographic printing plate in a printing press have to. Steel plates or bands can also be used, however they are not common because of their relatively high weight and stiffness used.
  • the aluminum carrier cleaned, degreased and / or by known methods etched include treatment with a solution that Contains sodium hydroxide with or without degreasing and etching agents.
  • the mixtures can also chemicals such as acetone, methanol, trichlorethylene and the like contain.
  • the solution can also be an aluminum ion source such as sodium aluminate to a concentration that corresponds to the saturation point, included to increase process consistency support.
  • the required concentrations and other treatment conditions depend on what specific surface roughness is set shall be. This step can generally be from 5 seconds to Take 5 minutes. After that, the surface of a wet brush with a slurry subjected.
  • the slurry consists of water and a finely divided powder one abrasive agent.
  • the fine powdery abrasive is concentrated from 5 to 80% by weight used in the slurry, particularly in the range between 15 to 40% by weight.
  • the slurry can also be an acid or contain an alkali if necessary.
  • Additives such as thickeners, surface treatment agents, and flocculants and the like may be included.
  • Suitable abrasives include diamond dust, Quartz, flint, granite, aluminum oxide, silica, diatomaceous earth, sand, Emery, abrasives made of iron and aluminum silicates, talc, pumice, Corundum, dolomite, magnesium oxide, alumina, zirconia, iron, tungsten carbide and the like or a combination of two or more of the foregoing enumerated means.
  • the abrasives have an average particle size in the range between 5 and 500 ⁇ m, preferably between 10 and 100 ⁇ m, particularly preferably between 20 and 50 ⁇ m.
  • the abrasive slurry feeder includes a container a capacity in the range between 100 and 10,000 liters, in particular between 1,000 and 5,000 liters.
  • a stirring device is located in the container for the slurry to precipitate solid particles too prevent.
  • the stirring device can be, for example, a propeller stirrer, which extends into the container or a system for circulating the slurry. By constantly moving the slurry, precipitation will occur prevents the solids in the slurry.
  • a pump delivers the slurry to a manifold. The pump delivery rate is like this set for an aluminum carrier belt that the distribution width, the belt speed, the brush speed and the solids in the slurry be taken into account.
  • the distributor nozzle distributes the slurry evenly over the aluminum support, especially in the form of a uniform curtain.
  • the nozzle can either a narrow slot or a number of closely spaced apart Have holes.
  • the slurry becomes pre-fed to the manifold filtered to prevent larger agglomerates from forming the slot or the Can clog holes.
  • the brush roller or the brush rollers turn in the opposite direction the tape running direction of the carrier material. If the brush roller in the same The direction at which the carrier belt rotates must be the tangential speed of the brush roller differ from the tape running speed.
  • the distributor nozzle carries the slurry onto the aluminum support immediately in front of everyone Brush roller on.
  • the brush rollers can be on one or both Sides of the carrier tape.
  • the carrier tape is preferably horizontal transported when the brush rollers are on one side, namely above the carrier belt and is conveyed vertically when the brush rollers are arranged on both sides of the carrier tape.
  • the number of revolutions the brush rollers are in the range between 100 and 5,000 revolutions per minute, preferably between 200 and 500 revolutions per minute.
  • the diameter of the individual brush roller is 0.1 to 1 m.
  • the contact route of the brush roller circumference with the aluminum belt carrier is one given time is an important factor in determining the roughness of the carrier material.
  • the route is determined by the geometry of the rollers before and after the brush roller, the carrier tape tension, the brush roller diameter and the like parameters are determined.
  • the route can be between 10 and 1,000 mm, preferably between 50 and 500 mm. In general applies that fewer brush rollers are required if the contact distance is large is.
  • the object of the invention is that the brush roller or Brush rollers neither pure metal wire brushes nor pure polymer fiber brushes are, but instead have groups or brush strips, made from a combination of organic polymer fibers and metal wires consist.
  • the relationship between fibers and wires is in one Range between 0.01 and 10, preferably between 0.05 and 5, and in particular chosen between 0.1 and 1.0.
  • the thickness of the fibers is in the range between 0.05 and 3 mm, in particular between 0.1 and 0.5 mm.
  • the thickness of the The wire is generally less than that of the fibers and moves in the Range between, 0.03 and 2 mm, preferably between 0.07 and 0.3 mm.
  • the Length of the fibers and wires is the same after being on the surface the roller are attached, and their length is 5 to 300 mm, preferably 10 to 100 mm.
  • the tufts of fibers and / or metal wires are on the roller as Brush strips attached.
  • the brush strips contain a suitable mixture from fibers and wires.
  • some of the strips can only be fibers and others contain only metal wires, such brush strips in the embodiment according to Figures 1 are shown. Such brush strips will be alternately mounted on the brush roller circumference.
  • the fibers consist of organic polymers from the group of polyacrylonitriles, Polyamides, polyesters, polyethylenes, polyimides, polyolefins, polypropylenes, Polyurethanes, polyvinyl chlorides and cellulose derivatives can be selected.
  • the preferred fibers consist of aliphatic polyamides, namely different nylon variants. Nylon 6, nylon are particularly preferred 6.6; Nylon 6.10 and nylon 6.12.
  • the polymer fibers can be treated with inert particles such as For example, silicon carbide can be filled to increase their abrasion resistance.
  • the Metal wires consist of metals such as aluminum, brass, bronze, copper, Iron or the alloys of these metals as well as steel, especially stainless steel Steel that does not rust in the aqueous slurry solutions.
  • each brush roller is electrically isolated to prevent current flow through the brush roller.
  • the excess slurry is squeezed and / or rinsed off the roughened surface of the support.
  • Embedded particles of the slurry are removed by etching the roughened aluminum surface. The etching is carried out using an alkaline solution, which is applied to the brushed surface.
  • Preferred alkaline solutions contain sodium hydroxide, potassium hydroxide, sodium metasilicate, sodium carbonate, sodium aluminate and sodium gluconate.
  • the etching treatment can also be carried out using an acidic solution containing acids such as fluoric acid, hydrochloric acid, nitric acid, phosphoric acid and sulfuric acid.
  • the etching is preferably carried out at a temperature ranging from room temperature to 90 ° C. for a period of 5 to 300 seconds with an etching solution which has a concentration of 1 to 50% by weight until about 0.01 up to 10 g / m 2 of aluminum is etched away.
  • An alkali-etched aluminum surface often contains alkali-insoluble substances, namely dirt. The surface is then cleaned of dirt with an acidic solution such as an aqueous solution of nitric acid, sulfuric or phosphoric acid.
  • the aluminum carrier surface wet-brushed with a slurry is roughened electrochemically.
  • the electrochemical roughening takes place in an electrolyte which contains acids, such as, for example, nitric acid or hydrochloric acid with additives, such as boric acid, hydrogen peroxide, aluminum chloride and aluminum nitrate up to a concentration corresponding to the saturation point, in order to support the process consistency and to strengthen the electrical conductivity of the electrolyte.
  • the electrochemical roughening can take place in two steps, namely a first step with nitric acid, followed by a second step with hydrochloric acid.
  • the nitric or hydrochloric acid is present in the aqueous electrolyte in a proportion of 1 to 20 grams per liter, while maintaining a temperature of 20 to 60 ° C of the electrolyte.
  • Current is applied over the aluminum support and an electrode made of lead or stainless steel over a distance of 0.1 to 20 cm.
  • the applied current density is 0.1 to 200 A / dm 2 .
  • the current is direct current or preferably alternating current, or a combination of the two types of current.
  • the roughening time ranges from 1 to 300 seconds, in particular it is less than 30 seconds.
  • the preferred operating parameters of the above sizes are selected within the ranges specified or can be changed within these ranges if necessary.
  • the excess acid on the electrochemically roughened aluminum carrier is squeezed off and / or rinsed off before the next additional treatment.
  • a wet-brushed and additionally electrochemically roughened aluminum surface is usually anodized by one of the known methods. This is done in electrolytes containing sulfuric, phosphoric or oxalic acid in concentrations up to 200 grams per liter, at a temperature between 20 and 70 ° C.
  • the anodizing is preferably carried out with direct current, current densities of up to about 60 A / dm 2 being applied in order to produce an oxide layer of up to 10 grams per m 2 , in particular from 0.3 to 5 grams per m 2 .
  • the electrical voltage is 1 to 100 volts and the residence time in the electrolyte is 1 to 300 seconds, in particular 15 seconds.
  • the electrolyte used for the anodizing may also contain further, known and useful components, such as aluminum sulfate with a concentration up to the saturation point, in order to support the process consistency and to increase the electrical conductivity of the electrolyte.
  • An aluminum carrier with a roughened surface that anodized Has layer has an excellent hydrophilicity and can directly with coated with a light-sensitive layer.
  • the carrier can optionally are also subjected to a hydrophilic treatment in a known manner, before the photosensitive layer is applied.
  • the Support with a silicate layer using an alkali metal silicate or with a polymer layer using a polyvinylphosphonic acid be equipped.
  • a photosensitive layer generally comprises a photosensitizer and a resin binder. It can also contain additional components such as dyes, plasticizers, acid stabilizers, surface agents, antistatic compositions, UV absorbers, optical brighteners, inert fillings, Contain lubricants and other coating solutions.
  • a preferred negative working photosensitizer is a photosensitive polymer diazonium salt.
  • a preferred positive working photosensitizer is a photosensitive Naphthoquinone diazide.
  • Other photosensitizers include Azides, photo-cleavable compounds and photo-curable compounds.
  • the resin binder can be made from a Group consisting of vinyl acetal polymers, styrene / maleic anhydride copolymers and phenolic resins can be selected.
  • the proportion is preferably of the resin binder in the photosensitive layer 30 to 95% by weight, especially 50 to 90% by weight.
  • the photosensitive layer can also be coated with a Spacer layer to be coated to the vacuum suction time during exposure lower.
  • the photosensitizer has a proportion of 5 to 70% by weight, preferably from 10 to 50% by weight in the photosensitive layer.
  • the additives to the photosensitive layer can be mixed with compatible solvents such as ethanol, ethylene glycol monomethyl ether, gamma-butyrolactone, propylene glycol monomethyl ether and with diethyl ketone.
  • the brushed aluminum surface is then coated with such a solution.
  • the photosensitive layer has a preferred dry layer weight between 0.1 and 5 g / m 2 , in particular from 0.2 to 2 g / m 2 .
  • the photosensitive layer is exposed imagewise according to known techniques. Such exposure can be carried out using a UV light source through a film mask under vacuum frame conditions. Mercury vapor discharge lamps and metal halide lamps are preferred. Other sources of radiation are carbon arc lamps, pulsed xenon lamps and lasers.
  • Light absorption filters can be used to reduce light radiation in the material.
  • the photosensitive layer is developed by removing the non-image areas from the photosensitive layer using a suitable developer and then dried. Any developer solution which satisfactorily removes the non-image areas of the photosensitive layer after exposure while keeping the image areas can be used.
  • Suitable developer compositions include solutions containing additives such as sodium metasilicate, trisodium phosphate, monosodium phosphate and alkyl hydroxyls in water for diazide coatings, n-propanol in water for diazonium salt coatings and benzene for azide coatings.
  • the developed image on the printing plate is protected by a preservation treatment.
  • Base material made of an aluminum alloy 1100 with a maximum belt width of 1.3 m and a thickness of 0.3 mm is prepared for the production of a printing plate at a belt running speed of 18 m / min.
  • the carrier tape is first cleaned, degreased and lightly etched by treatment in an aqueous alkali solution containing about 20 g per liter of sodium hydroxide, aluminum ions and a degreasing agent, keeping the temperature at about 65 ° C for a 7 second residence time.
  • the carrier tape is then wet-brushed with a slurry, the brush roller having a diameter of 0.6 m, a width of 1.5 m and a speed of rotation of 500 revolutions per minute.
  • the brush strips are attached across the roller width, of which 60 brush strips contain nylon 6.6 fibers with a diameter of 0.3 mm and the remaining 20 brush strips contain stainless steel wires with a diameter of 0.1 mm.
  • the brush strips are arranged in repeating groups of 3 strips of nylon with a strip of metal.
  • the contact distance of the brush roller with the aluminum surface is 550 mm.
  • the slurry consists of 20% by weight of abrasive particles in water. The particles consist of 99.6% by weight of silicon oxide, 0.1% by weight of aluminum oxide, 0.02% by weight of iron oxide and 0.2% by weight of other materials. The average particle size is 19 ⁇ m.
  • the slurry comprises 3000 liters, which are under constant circulation and are applied to the brush rollers at 200 liters per minute.
  • the roughened carrier tape is then rinsed with water, squeezed off, dried, anodized, hydrophilized and dried again.
  • the anodization is carried out with a solution at 45 ° C. which contains 150 g per liter of concentrated sulfuric acid (95 to 98% by weight) and approximately 6 g per liter of aluminum sulfato octadecahydrate.
  • the direct current density is 26 A / dm 2 and the direct current is switched on intermittently for a total of 8 seconds, producing an oxide layer of 2 g / m 2 .
  • the anodized surface is made hydrophilic by immersion in an aqueous solution containing 2.2% by weight of polyvinylphosphonic acid at a temperature of 75 ° C.
  • the ratio of the number of fibers to the number of metal wires is 0.3.
  • the bristles of the brush roller 1 are 40 mm long at the beginning of the wet brushing. After 250,000 m of carrier tape have been brushed, the bristles are rubbed down to a length of 7 mm.
  • the surface roughness of the substrate at the start of the wet brushing is similar to that after the passage of 250,000 m of substrate.
  • the average roughness R a is 0.38 ⁇ m in the direction of tape travel and 0.42 ⁇ m transverse to the direction of tape travel, so that the difference between the two average roughness values, based on the value in the direction of tape travel, is approximately 10.5%.
  • Example 1 The wet brushing according to Example 1 is repeated, the brush roller containing only brush strips made of nylon 6.6 fibers.
  • the bristles are rubbed down to a length of 7 mm after the passage of 30,000 m of carrier material. This means that the service life or the service life of the brush roller is only 1/8 of that of Example 1.
  • the surface roughness is similar to that in Example 1, namely with an average roughness R a of 0.36 ⁇ m in the direction of tape travel and 0.41 ⁇ m transverse to the direction of tape travel, so that there is a difference between the two average roughness values of approximately 14%, based on the average roughness in the direction of tape travel.
  • Example 1 is repeated with a brush roller 1, but with the 20th Brush strips made of metal wire by an equal number of brush strips made of nylon 6.6 fibers with a diameter of 0.5 mm are replaced.
  • the Bristles of the brush roller are already after 30,000 m belt pass of the carrier material worn down to 7 mm.
  • the surface roughness is similar to that of the example 1.
  • Example 1 is repeated with a brush roller 1, in which 60 brush strips made of fibers with a diameter of 0.3 mm by an equal number of brush strips made of fibers with a diameter of 0.5 mm and 20 brush strips made of metal wire by an equal number of Brush strips made of fibers with a diameter of 0.3 mm can be replaced.
  • a configuration of the brush roller 1 opposite to that of Comparative Example B is obtained.
  • the bristles are removed after a belt pass of 40,000 m to a length of 7 mm. This represents a slight improvement compared to comparative examples A and B, but the result is nowhere near as good as that according to example 1.
  • the mean roughness value R a changes considerably in this comparative example C and is 0.68 ⁇ m in the direction of strip travel and 0. 80 ⁇ m across the strip running direction, which results in a difference of around 17.6% based on the roughness in the strip running direction.
  • Example 1 is repeated with a brush roller 1, in which all Brush strips are made of stainless steel wires.
  • the roughness is similar to of those obtained by dry wire brushing, namely from shallow and directed.
  • Another disadvantage is that higher pulling forces are required as the wires oppose the aluminum surface of the Hollow out the moving carrier tape.
  • Example 1 is repeated with a brush roller 1, in which the number of Fiber brush strips 70 instead of 60 and the number of metal wire brush strips Is 10 instead of 20.
  • the ratio of the number of fibers to that Number of metal wires is 0.7.
  • the surface roughness is similar to that in Example 1.
  • the bristles are after about 150,000 m belt pass removed to a length of 7 mm. It is compared to the comparative example A get five times the life of the brush roller 1.
  • Example 1 is repeated, the average particle size of the slurry being 0.11 ⁇ m instead of 0.19 ⁇ m.
  • the average roughness value R a is 0.32 ⁇ m in the direction of strip travel and 0.36 ⁇ m in the cross direction of the strip.
  • Example 1 is repeated with a slurry in which the slurry concentration is 30% by weight instead of 20% by weight.
  • the average roughness value R a in the tape running direction is 0.45 ⁇ m and 0.51 ⁇ m across the tape running direction.
  • Example 4 is repeated, with the belt running speed instead of 45 m / min of 18 m / min and the anodizing current becomes proportional to the tape running speed increased by a factor of 2.5 to the same oxide weight to obtain.
  • the bristles of the brush roller 1 are after a belt pass removed from 400,000 m to 7 mm in length.
  • the surface roughness is slightly lower compared to Example 4, but still uniform.
  • the average roughness values are 0.37 ⁇ m in the tape running direction and 0.42 ⁇ m across Belt running direction.
  • Example 5 is repeated, but with all brush strips exclusively Contain nylon fibers.
  • the nylon bristles are already after 48,000 m removed to a length of 7 mm. This in turn means a reduction the service life of the brush rollers to 1/8 the value in Example 5.
  • the surface roughness is similar to that after Example 4.
  • Carrier tapes made of an aluminum alloy 3003 with a maximum belt width of 1.2 m and a thickness of 0.4 mm at a belt speed of 18 m / min are prepared for roughening.
  • the tapes are first cleaned and degreased by treatment with an aqueous alkaline solution containing approximately 5% of a weakly alkaline spray degreasing and cleaning agent for metal surfaces with special additives for refining layers of phosphate layers at a temperature of approximately 55 ° C.
  • the strips are then wet-brushed with a slurry using 4 brush rollers, which have a diameter of 0.3 m and a width of 1.5 m.
  • the slurry consists of 22% by weight of abrasive particles in water. The particles are composed of 59.7% by weight of silicon oxide, 22.7% by weight of aluminum oxide and 16.6% by weight of other abrasive materials. The average particle size is 48 ⁇ m. The slurry contains 1200 liters that circulate continuously.
  • the roughened carrier tape is rinsed with water, squeezed off, dried, anodized, hydrophilized and dried again.
  • the anodization is carried out at 40 ° C. with a solution which contains 190 g per liter of concentrated sulfuric acid (95 to 98% by weight) and approximately 10 g per liter of aluminum sulfato octadecahydrate. Direct current is applied in order to obtain an oxide layer of 0.5 g / m 2 .
  • the anodized surface is hydrophilized at 72 ° C. by immersion in an aqueous solution containing 2% polyvinylphosphonic acid.
  • the bristles on the brush roller are 40 mm long at the start of roughening.
  • the surface roughness of the material at the beginning is similar to that after the roughening of 1 million meters of carrier tape.
  • the average roughness values R a are 0.32 ⁇ m in the strip running direction and 0.35 ⁇ m transverse to the strip running direction.
  • Example 6 is repeated, but all brush strips are made of nylon 6.6 fibers.
  • the bristles are removed to a length of 7 mm after a belt pass of only 200,000 m. This means a reduction in the service life of the brush roller by a factor of 5.
  • the surface roughness is similar to that according to Example 6, namely with mean roughness values R a of 0.31 ⁇ m in the direction of strip travel and 0.35 ⁇ m transverse to the direction of strip travel.
  • Example 6 is repeated with the first brush roller only metal wire strips and the other 3 brush rollers are only equipped with nylon fibers are instead of mixed brush strips for all 4 brush rollers.
  • the Roughness of the surface is more aligned than in the case of example 6.
  • the Nylon bristles are up to 7 mm long after only 200,000 m of carrier tape pass worn away.
  • Example 6 is repeated, the first 3 brush rollers having only nylon fibers and the last brush roller being equipped with metal wires only.
  • the surface roughness is more pronounced than in Example 6 and in Comparative Example G, with an average roughness R a of 0.28 ⁇ m in the strip running direction and 0.38 ⁇ m transverse to the strip running direction.
  • the nylon bristles are worn down to the same amount as in comparative example G.
  • Example 6 is repeated with the tape being roughened on both sides.
  • Four brush rollers are for roughening one side and 4 other brush rollers are available to roughen the other side. All 8 brush rollers are in a 3: 1 ratio of nylon fibers to metal wires, similar to the example 6, equipped.
  • the mixed bristles are removed to the same extent, as indicated in Example 6.
  • Alnovol PN 429 from Hoechst Aktiengesellschaft is, for example, a novolak resin suitable.
  • the propylene glycol monomethyl ether is e.g. to be a product of Dow Chemical, USA.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Brushes (AREA)

Claims (22)

  1. Procédé pour rendre rugueuse par des moyens mécaniques la surface d'un support de plaque d'impression en aluminium ou en un alliage d'aluminium, par brossage humide, caractérisé en ce que le brossage humide est réalisé en utilisant simultanément des fibres organiques et des films métalliques disposés les uns à côté des autres, et une suspension de boue contenant de 5 à 80% en poids de particules abrasives dans l'eau.
  2. Procédé selon la revendication 1, caractérisé en ce que le rapport entre les fibres organiques et les fils métalliques est compris dans la plage de 0,01 à 10.
  3. Procédé selon la revendication 2, caractérisé en ce que le rapport entre les fibres organiques et les fils métalliques est compris dans la plage de 0,05 à 5, et en particulier de 0,1 à 1,0.
  4. Procédé selon la revendication 1, caractérisé en ce que la taille des particules de la suspension de boue est de 1 à 500 µm, et en particulier de 20 à 50 µm.
  5. Procédé selon les revendications 1 à 4, caractérisé en ce que, dans la direction d'avancement du support de plaque d'impression et dans la direction transversale à cette direction d'avancement, la valeur de la rugosité moyenne Ra, mesurée par des moyens mécaniques, diffère d'au plus 14%, ce pourcentage étant calculé par rapport à Ra dans la direction d'avancement.
  6. Procédé selon la revendication 5, caractérisé en ce que dans la direction d'avancement, la valeur de la rugosité moyenne Ra est comprise dans la plage de 0,32 à 0,47 µm, et dans la direction transversale à la direction d'avancement de la bande, la valeur de la rugosité moyenne Ra est comprise dans la plage de 0,35 à 0,50 µm.
  7. Procédé selon la revendication 4, caractérisé en ce que dans la suspension de boue, les particules sont constituées de 49 à 99,6% en poids d'oxyde de silicium, de 0,1 à 23,7% en poids d'oxyde d'aluminium, le solde étant constitué de 0,2 à 16,6% en poids d'autres matériaux abrasifs.
  8. Procédé selon la revendication 1, caractérisé en ce que comme fibres organiques, on utilise des polymères, et en particulier des polyamides, et que comme fils métalliques, on utilise de l'acier inoxydable.
  9. Cylindre de brossage en vue de la mise en oeuvre du procédé selon les revendications 1 à 8, dont la surface est occupée par des bandes de brossage, caractérisé en ce que les bandes de brossage (2, 3; 8, 9) contiennent des fibres organiques et des fils métalliques disposés les uns à côté des autres.
  10. Cylindre de brossage selon la revendication 9, caractérisé en ce que deux groupes (4, 5) de bandes de brossage (2, 3) sont disposés à la surface du cylindre, en ce que chaque groupe de bandes de brossage est constitué d'un matériau constitué de fibres ou de fils, et en ce que les bandes de brossage forment un motif répété constitué d'un premier nombre de bandes de brossage (2) du premier groupe (4) et d'un deuxième nombre de bandes de brossage (3) de l'autre groupe (5).
  11. Cylindre de brossage selon la revendication 9, caractérisé en ce que les bandes individuelles de brossage (8 ou 9) contiennent un mélange de fibres (22) et de fils métalliques (33), et en ce que le matériau des fibres est différent du matériau des fils.
  12. Cylindre de brossage selon la revendication 9, caractérisé en ce que les bandes de brossage (8; 9) sont constituées de groupes (10, 11 ou 12, 13) de fils métalliques (33) et de fibres (22), et en ce que les motifs des groupes (10, 11) d'une bande de brossage (8) présentant les groupes (12, 13) recouvrent ou sont décalées par rapport aux autres bandes de brossage (9).
  13. Cylindre de brossage selon la revendication 10, caractérisé en ce que le matériau des bandes de brossage (2) d'un groupe (4) est un polymère, alors que le matériau des bandes de brossage (3) de l'autre groupe (5) est un métal.
  14. Cylindre de brossage selon la revendication 13, caractérisé en ce que le polymère est sélectionné dans le groupe constitué des polyamides, des polyacrylonitriles, des polyesters, des polyéthylènes, des polyimides, des polyoléfines, des polypropylènes, des polyuréthanes, des poly(chlorure de vinyle) et des dérivés de cellulose.
  15. Cylindre de brossage selon la revendication 13, caractérisé en ce que le métal est sélectionné dans le groupe constitué de l'acier inoxydable, de l'aluminium, du laiton, du bronze, du cuivre, de l'acier, du fer et des alliages de ces métaux.
  16. Cylindre de brossage selon la revendication 10, caractérisé en ce qu'un groupe de bandes de brossage (2) est constitué de polyamide, par exemple du nylon 6, du nylon 6.6, du nylon 6.10 et du nylon 6.12, et l'autre groupe de bandes de brossage (3) est constitué d'acier inoxydable.
  17. Cylindre de brossage selon la revendication 16, caractérisé en ce que les fibres des bandes de brossage (2) en polyamide sont complétées par des particules inertes, par exemple en carbure de silicium.
  18. Cylindre de brossage selon la revendication 13, caractérisé en ce que le rapport entre les fibres polymères et les fils métalliques qui forment chaque fois les différentes bandes de brossage (2, 3) est compris dans la plage de 0,01 à 10.
  19. Cylindre de brossage selon la revendication 18, caractérisé en ce que le rapport entre les fibres polymères et les fils métalliques est compris entre 0,05 et 5.
  20. Cylindre de brossage selon la revendication 18, caractérisé en ce que le rapport entre les fibres polymères et les fils métalliques est compris entre 0,1 et 1,0.
  21. Cylindre de brossage selon la revendication 9, caractérisé en ce que les fibres présentent une épaisseur de 0,05 à 3 mm, et en particulier de 0,1 à 0,5 mm, et les fils présentent une épaisseur de 0,03 à 2 mm, et en particulier entre 0,07 et 0,3 mm.
  22. Cylindre de brossage selon la revendication 9, caractérisé en ce que les bandes de brossage (2, 3) présentent une même longueur comprise entre 5 et 300 mm, et en particulier 10 et 100 mm.
EP95114953A 1994-09-30 1995-09-22 Procédé pour rendre rugueux par moyens mécaniques la surface d'un support pour l'impression et brosse cylindrique à cet effet Expired - Lifetime EP0704320B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4435221A DE4435221A1 (de) 1994-09-30 1994-09-30 Verfahren zum mechanischen Aufrauhen der Oberfläche eines Druckplattenträgers und Bürstenwalze zur Durchführung des Verfahrens
DE4435221 1994-09-30

Publications (2)

Publication Number Publication Date
EP0704320A1 EP0704320A1 (fr) 1996-04-03
EP0704320B1 true EP0704320B1 (fr) 1998-12-02

Family

ID=6529774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114953A Expired - Lifetime EP0704320B1 (fr) 1994-09-30 1995-09-22 Procédé pour rendre rugueux par moyens mécaniques la surface d'un support pour l'impression et brosse cylindrique à cet effet

Country Status (11)

Country Link
US (2) US5775977A (fr)
EP (1) EP0704320B1 (fr)
JP (1) JPH08192586A (fr)
KR (1) KR960010905A (fr)
CN (1) CN1126669A (fr)
AT (1) ATE173980T1 (fr)
BG (1) BG100034A (fr)
BR (1) BR9504236A (fr)
DE (2) DE4435221A1 (fr)
DK (1) DK0704320T3 (fr)
ES (1) ES2124484T3 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3491245B2 (ja) * 1995-03-30 2004-01-26 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表面処理方法
JPH09207467A (ja) * 1996-02-02 1997-08-12 Fuji Photo Film Co Ltd 平版印刷版支持体の製造方法
US6120640A (en) * 1996-12-19 2000-09-19 Applied Materials, Inc. Boron carbide parts and coatings in a plasma reactor
ES2138525B1 (es) * 1997-03-07 2000-08-16 Union Ind Marmolera S L Procedimiento para el tratamiento superficial de materiales petreos.
JPH11221742A (ja) 1997-09-30 1999-08-17 Hoya Corp 研磨方法及び研磨装置並びに磁気記録媒体用ガラス基板及び磁気記録媒体
DE19809802A1 (de) * 1998-03-09 1999-09-16 Binder Hans Verfahren zur Oberflächenbehandlung von Aluminium oder dergleichen
JP2000301441A (ja) * 1999-04-19 2000-10-31 Nippon Micro Coating Kk 化学的機械的テクスチャ加工方法
ATE299099T1 (de) * 1999-04-22 2005-07-15 Fuji Photo Film Co Ltd Verfahren zur herstellung eines aluminiumträgers für lithographische druckplatten
DE10118374A1 (de) * 2001-04-12 2002-10-17 Fischer Artur Werke Gmbh Verfahren zur Herstellung eines Spreizankers
EP1380417B1 (fr) * 2002-07-03 2006-08-23 Agfa-Gevaert Précurseur de plaque d'impression lithographique de type positif
CN1326692C (zh) * 2004-07-01 2007-07-18 深圳市光韵达实业有限公司 一种镀镍金属印刷模板及其制造方法
US20090029631A1 (en) * 2005-09-23 2009-01-29 General Electric Mitigation of stress corrosion and fatigue by surface conditioning
DE102009018443A1 (de) * 2009-04-22 2010-10-28 Kullen Gmbh & Co. Kg Rotationsbürste mit unterschiedlichem Borstenbesatz
DE102010015035A1 (de) 2009-05-06 2011-08-04 Heidelberger Druckmaschinen AG, 69115 Bürste mit Kombi-Beborstung zum Reinigen eines Druckmaschinenzylinders
CN101654799B (zh) * 2009-09-15 2012-03-28 江苏工业学院 一种超高速制备高度有序多孔阳极氧化铝膜的方法
EP2616219A4 (fr) 2010-09-15 2015-05-27 Saint Gobain Abrasives Inc Brosse imprégnée d'un abrasif
DE102012201815A1 (de) * 2012-02-07 2013-08-08 Mall + Herlan Gmbh Vorrichtung und Verfahren zum Oberflächenbearbeiten von zylindrischen Körpern
DE102012109071A1 (de) * 2012-09-26 2014-03-27 Contitech Elastomer-Beschichtungen Gmbh Schleifverfahren für Druckformen im Flexo- oder Hochdruckbereich
CN108372433B (zh) * 2018-04-04 2023-08-15 盐城工学院 刀具毛刷钝化装置
KR102347254B1 (ko) * 2021-08-23 2022-01-03 윤찬호 입체감을 위한 석재 표면 처리 방법

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666282A (en) * 1951-04-19 1954-01-19 Osborn Mfg Co Method of conditioning metal sheets, strips, rods, and the like
US2845648A (en) * 1954-03-18 1958-08-05 Osborn Mfg Corp Brush and brush material
US3186019A (en) * 1961-05-19 1965-06-01 Hattori Ryosuke Circular brush
US3343195A (en) * 1964-10-16 1967-09-26 Pittsburgh Plate Glass Co Brush construction
US3857134A (en) * 1973-04-19 1974-12-31 Ppg Industries Inc Tufted style brush
US3969090A (en) * 1973-06-22 1976-07-13 Anderson Corporation Industrial brush
US3929591A (en) 1974-08-26 1975-12-30 Polychrome Corp Novel lithographic plate and method
US4477317A (en) * 1977-05-24 1984-10-16 Polychrome Corporation Aluminum substrates useful for lithographic printing plates
JPS5583080A (en) * 1978-12-19 1980-06-23 Kanebo Ltd Cleaning device of copying machine
US4361922A (en) * 1981-01-06 1982-12-07 Schlegel Corporation Cleaning brush for electrostatic copiers, printers and the like
US4514872A (en) * 1983-04-29 1985-05-07 Hopkins Hammond W Escalator tread cleaning brush
JPS6227191A (ja) * 1985-07-26 1987-02-05 Fuji Photo Film Co Ltd 平版印刷版用支持体の製造方法
JPS6227192A (ja) 1985-07-26 1987-02-05 Fuji Photo Film Co Ltd 平版印刷版用支持体の製造方法
JPS62196191A (ja) * 1986-02-24 1987-08-29 Fuji Photo Film Co Ltd 平版印刷版用支持体の製造方法
US4756044A (en) * 1987-01-27 1988-07-12 Clark Gaylord J Tire brush
US5050262A (en) * 1987-03-05 1991-09-24 Malish Terrance J Floor maintenance brush or the like
US5016311A (en) * 1988-04-27 1991-05-21 Minnesota Mining And Manufacturing Company Apparatus and brush segment arrangement for finishing wheel brushes; and method
US5233719A (en) * 1988-04-27 1993-08-10 Minnesota Mining And Manufacturing Co. Apparatus and brush segment arrangement for finishing wheel brushes
JP3276422B2 (ja) * 1992-10-28 2002-04-22 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製造方法
JPH07204999A (ja) * 1994-01-07 1995-08-08 Hotani:Kk 金属ストリップ研磨方法

Also Published As

Publication number Publication date
BG100034A (bg) 1996-07-31
JPH08192586A (ja) 1996-07-30
EP0704320A1 (fr) 1996-04-03
ATE173980T1 (de) 1998-12-15
DK0704320T3 (da) 1999-08-16
US5775977A (en) 1998-07-07
ES2124484T3 (es) 1999-02-01
US5860184A (en) 1999-01-19
CN1126669A (zh) 1996-07-17
DE4435221A1 (de) 1996-04-04
DE59504405D1 (de) 1999-01-14
KR960010905A (ko) 1996-04-20
BR9504236A (pt) 1996-08-06

Similar Documents

Publication Publication Date Title
EP0704320B1 (fr) Procédé pour rendre rugueux par moyens mécaniques la surface d'un support pour l'impression et brosse cylindrique à cet effet
DE3030815C2 (de) Elektrolytisches Körnungsverfahren
EP0167751B1 (fr) Procédé de traitement de surfaces d'aluminium
DE2912060C2 (de) Träger für lithographische Platten und seine Verwendung
DE2512933C2 (de) Lichtempfindliche Flachdruckplatte
DE1671614A1 (de) Lithographische Druckplatte und Verfahren zur Herstellung derselben
DE1447963B2 (de) Verfahren zur herstellung einer offsetdruckform aus einem vorsensibilisierten druckplattenmaterial
EP0118740B1 (fr) Plaques, pellicules ou matériel en formes de bandes, en aluminum grainé par voie mécanique et électrochimique, procédé pour leur fabrication, et emploi comme support pour plaques pour l'impression lithographique
DE3825033A1 (de) Behandlungseinrichtung
EP0008440A2 (fr) Procédé d'oxydation anodique d'aluminium et son application comme support de plaque d'impression
DE2218471A1 (de) Verfahren zur Herstellung von Aluminiumoffsetdruckplatten
DE2906376C2 (fr)
EP0268790B1 (fr) Procédé pour la modification par enlèvement de supports en aluminium ou en alliage de l'aluminium décapés en plusieurs étapes et utilisation de ceux-ci pour la fabrication de plaques offset
DE2816307A1 (de) Verfahren zum elektrolytischen granulieren von aluminium oder einer aluminiumlegierung
EP0097301B1 (fr) Procédé pour la modification par l'enlèvement de supports en aluminium décapés par voie électrochimique et l'utilisation de ceux-ci pour la fabrication des plaques offset
DE4105887A1 (de) Vorsensibilisierte platte zur verwendung in der herstellung lithographischer druckplatten
EP0200913A1 (fr) Mélange pour le développement et procédé pour la fabrication de plaques lithographiques utilisant ce révélateur
EP0190643A2 (fr) Matériau de supports hydrophilisés pour plaques d'impression offset, procédé de fabrication et leur emploi
EP0170045B1 (fr) Procédé pour le décapage et le chromage simultanés de plaques d'acier comme supports pour des utilisations lithographiques
DE69938214T2 (de) Träger für eine lithographische Druckplatte
EP0161461A2 (fr) Procédé d'oxydation anodique d'aluminium et son application comme matériau de support pour plaques d'impression offset
DE3127329C2 (fr)
DE60128174T2 (de) Flachdruckplattenträger und sein Herstellungsverfahren
DE60110152T2 (de) Flachdruckplattenträger und Verfahren zur Herstellung
DE1796159C3 (de) Verfahren zur Herstellung lithographischer Druckplatten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19961004

17Q First examination report despatched

Effective date: 19970523

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AGFA-GEVAERT AG

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19981202

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981202

REF Corresponds to:

Ref document number: 173980

Country of ref document: AT

Date of ref document: 19981215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59504405

Country of ref document: DE

Date of ref document: 19990114

ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2124484

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990302

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 19990224

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 19990818

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990922

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990922

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990922

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990930

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990930

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990930

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: AGFA-GEVAERT A.G.

Effective date: 19990930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000331

EUG Se: european patent has lapsed

Ref document number: 95114953.3

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000531

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20000808

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010331

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20010331

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20010831

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20010906

Year of fee payment: 7

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020923

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030401

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20031011

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050922

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050926

Year of fee payment: 11

Ref country code: DE

Payment date: 20050926

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070403

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060922

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060922