EP0118740A2 - 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 - Google Patents

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 Download PDF

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Publication number
EP0118740A2
EP0118740A2 EP84101145A EP84101145A EP0118740A2 EP 0118740 A2 EP0118740 A2 EP 0118740A2 EP 84101145 A EP84101145 A EP 84101145A EP 84101145 A EP84101145 A EP 84101145A EP 0118740 A2 EP0118740 A2 EP 0118740A2
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EP
European Patent Office
Prior art keywords
der
roughened
mechanically
aluminum
bis
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84101145A
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German (de)
English (en)
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EP0118740A3 (en
EP0118740B1 (fr
Inventor
Kurt Dr. Dipl.-Chem. Reiss
Walter Dr. Dipl.-Phys. Niederstätter
Joachim Dipl.-Ing. Stroszynski
Dieter Dr. Dipl.-Chem. Bohm
Gerhard Dr. Dipl.-Chem. Sprintschnik
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Hoechst AG
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Hoechst AG
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Publication date
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Priority to AT84101145T priority Critical patent/ATE46293T1/de
Publication of EP0118740A2 publication Critical patent/EP0118740A2/fr
Publication of EP0118740A3 publication Critical patent/EP0118740A3/de
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Publication of EP0118740B1 publication Critical patent/EP0118740B1/fr
Expired legal-status Critical Current

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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
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12993—Surface feature [e.g., rough, mirror]

Definitions

  • the invention relates to a plate, foil or tape-shaped material made of aluminum or its alloys with a surface that is first mechanically roughened on both sides and then electrochemically roughened, a method for its production and its use as a carrier material in the production of offset printing plates.
  • Carrier materials for offset printing plates are provided either by the consumer directly or by the manufacturer of precoated printing plates on one or both sides with a radiation-sensitive layer (reproduction layer), with the aid of which a printing image of a template is generated by photomechanical means.
  • the layer support carries the image points which will guide the color during the later printing and at the same time forms the hydrophilic image background for the lithographic printing process at the non-image points during the later printing.
  • aluminum, steel, copper, brass or zinc, but also plastic films or paper can be used as the base material for such layer supports. These raw materials are modified by suitable modifications such.
  • Additional requirements are imposed on the radiation-sensitive coated printing plate support, some of which interact with the requirements for the support material itself. These include, for example, a high sensitivity to radiation (light), good developability, clear contrasts after exposure and / or development, long print runs and reproduction that is as accurate as possible; increasingly play, especially in the case of printing plates with positive-working radiation-sensitive layers, also a behavior of the radiation-sensitive layer that is as free of radiation as possible when irradiating (exposing) the printing plate and good (ie with as little water as possible and with the greatest possible fluctuation tolerance in the water requirement during printing) Water routing of the printing forms plays an important role.
  • This matte layer generally is a layer of binder (for. Example, of a cellulose ether) with incorporated by dispersion therein, delustering particles, such as those made of Si0 2, ZnO, Ti0 2, Zr0 2, glass, A1 2 0 3, starch or polymers.
  • a printing plate constructed in this way is intended to shorten the time required to achieve the most extensive and uniform possible contact between the film template and the radiation-sensitive layer during the exposure stage of the printing form production process.
  • a radiation-sensitive reproduction material which contains particles in the positive-working radiation-sensitive layer, the smallest dimension of which is at least as large as the thickness of the layer itself, the The type of particles corresponds qualitatively to that described in the previously described DE-OS.
  • Such a material is said to be suitable for all applications in which positive contact copies have to be made in a vacuum copying frame and in which high image resolution and faithful reproduction of the original are important; in particular, it should show a lower tendency to under-radiation when copying, i. H.
  • under-radiation lateral and oblique radiation incidence
  • the application or introduction of particles with a binder onto or without a special binder in the radiation-sensitive layer is a complex process step that requires a great deal of care, particularly in modern, continuously running coating systems.
  • the applied or added particles during development of the layer provide for the E ntwicklungs crampkeit and in particular, the automatic processing apparatus a kind of "foreign body" represents, which may cause during operation sequence disorders.
  • the additives have no particular influence on the water flow of the printing form.
  • the process for producing a support for lithographic printing plates according to DE-OS 30 12 135 is carried out in at least three stages, with a) the aluminum plate being mechanically roughened, b) from the roughened surface 5 to 20 g / m 2 are removed and c) an electrochemical roughening is carried out with an electric current of alternating waveform in an aqueous acid solution, and this current must have certain parameters. After the electrochemical roughening, further ablation treatment and also anodic oxidation of the roughened surface can follow.
  • the surface topography of the support must look such that the surface in the primary structure shows even hills, overlaid by a secondary structure that shows pinholes, the respective bisecting axis of which is approximately perpendicular to the tangent to the outer surface of the hill.
  • the statistical distribution of the diameter of the pinholes is approximately such that 5% of the holes have a diameter D 5 of at most 3 ⁇ m and 95% of the holes have a diameter D 95 of at most 7 ⁇ m, ie the majority of the holes are in the range between 3 and 7 ⁇ m, especially between 5 and 7 pm.
  • the density of the pinholes is approximately 10 6 to 10 8 holes per cm 2 .
  • the average roughness R a of the mechanically roughened aluminum is 0.4 to 1.0 ⁇ m before the ablation treatment stage.
  • JP-OS 123 204/78 application no. 38238/77, published October 27, 1978
  • a mechanical roughening by nylon brushes and aqueous pumice stone dispersion and an electrochemical roughening for printing plate support materials made of aluminum Ablative treatment is performed after both roughening stages have been completed, but not between them.
  • the printing plate support material made of aluminum according to US Pat. No. 2,344,510 is first roughened mechanically, in particular by wire brushing, and then roughened chemically or electrochemically.
  • the finer roughening pattern of the chemical or electrochemical roughening should overlap the medium-fine roughening pattern of the mechanical roughening.
  • a Reini supply stage turned on, which is carried out with a 5% aqueous NaOH solution at 95 ° C.
  • the roughening electrolyte is an aqueous solution containing NaCl and HCl. After roughening, the material can also be anodized.
  • US Pat. No. 3,929,591 describes an aluminum printing plate support material which is produced in three stages, namely a) mechanical roughening using a moist particle mass based on silicates, oxides or sulfates, b) electrochemical roughening with alternating current in an aqueous electrolyte containing phosphates or H 3 PO 4 , and c) anodic oxidation with direct current in an aqueous electrolyte containing H 2 SO 4 .
  • Level b) should lead to an increased reflection behavior of the surface of at least 5%.
  • the T OPO the surface tomography is not further qualified or quantified.
  • the object of the present invention is to propose a material made of aluminum, by means of which it is possible to produce comprising offset printing plates radiation-sensitive layers in the irradiation process in the K opierrahmen as low as possible until no undercutting showing affection and also when printing produced from the plates printing forms a good Have water flow.
  • the parameters a) D al are in the range from 2 to 4 ⁇ m, b) D a2 in the range from 0.3 to 0.8 ⁇ m with an average base area F from 200 to 1200 ⁇ m 2 , c) R a in the range from 0.8 to 1.2 ⁇ m and d) tp mi (0.125) maximum at 15% and tp mi (0.4) maximum at 60%.
  • Some of these parameters can already lie in the specified ranges in the case of commercially available carrier materials for offset printing plates, but no carrier material has yet been found which matches all of these parameters with the material according to the invention. This applies in particular to the “double structure” claimed according to the invention and its effects on the behavior of the printing plate or printing form.
  • the parameters characterizing the material according to the invention are defined as follows:
  • the roughening of the surface can be measured and analyzed using various methods.
  • the standard methods include observation under a scanning electron microscope and instrument measurements such as with a roughness tester (profilometer) that scans a linear distance on the plate with a highly sensitive needle.
  • the diameter of the holes created by the roughening or the base area of the elevations are determined on the basis of photos which are taken, for example, with 240, 1200 or 6000 times magnification using a scanning electron microscope with an electron beam incident obliquely to the aluminum surface.
  • a representative area with at least 1000 holes is selected for the measurement for each sample.
  • the diameter of each hole is measured in the plane of the surface both parallel and perpendicular to the rolling axis or strip direction of the aluminum.
  • the arithmetic mean of the diameters in the parallel and vertical directions are calculated separately.
  • the arithmetic mean D a of the distribution of the hole diameters is calculated from the arithmetic mean of the hole diameters in a parallel and perpendicular direction.
  • D al is the arithmetic mean of the distribution of the hole diameters in the basic structure, D a2 accordingly in the superimposed structure.
  • the percentages of the basic structure and the superimposed structure from the surveys of the entire surface are also determined from these representative surface
  • the surface roughness (see for example DIN 4768 in the version from October 1970 or DIN 4762 in the version from May 1978) is checked with a roughness measuring device (Profilometer, stylus device with electrical transmission) measured over a representative measuring distance of at least 2 mm both parallel and perpendicular to the rolling axis.
  • the mean roughness values are determined and calculated from the two measurements as the arithmetic mean of the absolute distance of all points on the surface of the roughness profile from the center line of the profile.
  • the average roughness value R a is then the average value of the average roughness values in the parallel and perpendicular directions.
  • the load fraction tp mi is the ratio of the load-bearing length of the roughness profile to the measuring section of the roughness profile in the selected depth of cut of 0.125 ⁇ m or 0.4 ⁇ m in%, i.e. in the present case tp mi (0.125) is less than t pmi (0 , 4); the bearing component t pmi is also the average value of the bearing components in the parallel and vertical direction;
  • the roughness profile is the difference between the palpated profile and the envelope line (path of the center of a center point of a ball rolling over the profile, which is generally formed electronically in a stylus device); the depth of cut indicates the distance from the envelope line of the bearing component is determined.
  • a curve drawn up from the load components can, for example, provide information about the behavior in use, too high, ie load components above the claimed values lead to less suitable materials in the present field of application.
  • the load share curve not only takes the profile depths into account, but also the profile shapes.
  • the parameters characterizing the invention are thus the hole diameter and its size distribution in the basic structure and the superimposed structure from elevations, the average base area of the elevations, the percentages of the basic structure and the superimposed structure on the entire roughened surface, and the surface roughness, characterized by the Average roughness values and the load share.
  • Suitable base materials for the material according to the invention include those made of aluminum or one of its alloys, which have, for example, a content of more than 98.5% by weight of Al and proportions of Si, Fe, Ti, Cu and Zn.
  • the base material is roughened on one or both sides first mechanically and then electrochemically, if appropriate after a preliminary cleaning, any type of mechanical and electrochemical roughening being suitable in principle, the combination of which results in the “double structure” according to the invention.
  • mechanical roughening processes can also include brushing with rotating brushes with plastic bristles using aqueous abrasive suspensions.
  • the electrochemical roughening step is generally carried out in aqueous acids as electrolytes, but neutral or acidic aqueous salt solutions can also be used, each of which can also contain additives with corrosion inhibitors.
  • the average roughness R should not be less than 0.5 ⁇ m and the load percentage tp mi (0.125) should not be more than 20%.
  • a process is used in particular in which the base material, if appropriate after a preliminary cleaning, is mechanically roughened on one or both sides by wire brushing, and then, if appropriate after a removal intermediate treatment in an alkaline or acidic aqueous solution, electrochemically in a hydrochloric acid and / or electrolyte containing nitric acid is roughened using alternating current.
  • Pre-cleaning includes, for example, treatment with aqueous NaOH solution with or without degreasing agent and / or complexing agents, trichlorethylene, acetone, methanol or other commercially available aluminum stains. Wire brushing has been used in the relevant field for years and requires no further explanation.
  • the ablating intermediate treatment which can optionally also be carried out electrochemically, is generally carried out using an aqueous alkali metal hydroxide solution or the aqueous solution of an alkaline salt or an aqueous acid solution based on HN03, H 2 SO 4 or H 3 PO 4 , preferably up to a removal rate of 5 g / m 2 .
  • Electrochemical roughening has also been used in practice for years.
  • the aqueous electrolyte preferably based on aqueous solutions containing HC1 and / or HN0 3 , can contain corrosion-inhibiting or other additives such as H 2 S0 4 , H 2 0 2 , H 3 PO 4 , H 2 Cr0 4 , H 3 B0 3 , Gluconic acid, amines, diamines, surfactants or aromatic aldehydes can be added.
  • the process parameters in the roughening stage are in the following ranges: the temperature of the electrolyte between 20 and 60 ° C., the active substance (acid, salt) concentration between 2 and 100 g / l (in the case of salts also higher), the current density between 25 and 250 A / d m 2 , the residence time between 3 and 100 sec and the electrolyte flow rate in continuous processes on the surface of the workpiece to be treated between 5 and 100 cm / sec; AC is usually used as the type of current, but modified types of current such as AC with different amplitudes of the current strength for the anode and cathode current are also possible.
  • the distribution of the hole sizes is generally more uniform than in processes without prior mechanical roughening.
  • This stage is carried out in such a way that the basic topography of the mechanically roughened surface, characterized by the mean roughness value and the load-bearing component, changes only relatively little, but a hole structure that is as closed as possible, caused by the electrochemical roughening, is additionally formed, so that the external appearance shows a basic structure for 60 to 90% of the surface with the hole diameter distribution given above and a structure which appears as a superimposed structure from elevations for 10 to 40% of the surface.
  • the frequency of the surveys is on average around 200 to 500, in particular 250 to 450, per mm2, but it can also go up and down vary.
  • the electrochemical roughening can additionally be followed by a removal treatment with one of the solutions indicated in the intermediate treatment, in particular a maximum of 2 g / m 2 removal.
  • Direct current is preferably used for the anodic oxidation, but alternating current or a combination of these types of current (eg direct current with superimposed alternating current) can also be used; the electrolyte is in particular a water containing H 2 S0 4 and / or H 3 P0 4 solution.
  • the layer weights of aluminum oxide range from 0.5 to 10 g / m 2 , corresponding to a layer thickness of approximately 0.15 to 3.0 ⁇ m.
  • the stage of anodic oxidation of the aluminum printing plate support material can also be followed by one or more post-treatment stages.
  • These post-treatment stages serve in particular to additionally increase the hydrophilicity of the aluminum oxide layer, which is already sufficient for many areas of application, the remaining known properties of this layer being at least retained.
  • the materials according to the invention are used in particular as carriers for offset printing plates, ie a radiation-sensitive coating is applied to the carrier material on one or both sides either at the manufacturer of presensitized printing plates or directly from the consumer.
  • a radiation-sensitive coating is applied to the carrier material on one or both sides either at the manufacturer of presensitized printing plates or directly from the consumer.
  • all are radiation-sensitive layers Layers are suitable which, after irradiation (exposure), possibly with a subsequent development and / or fixation, provide an imagewise surface from which it is possible to print.
  • photoconductive layers such as z. B. in DE-PSen 11 17 391, 15 22 497, 15 72 312, 23 22 046 and 23 22 047 are described, applied to the carrier materials produced according to the invention, whereby highly light-sensitive, electrophotographic printing plates are created.
  • the positive-working radiation-sensitive layers are preferred.
  • coated offset printing plates obtained from the carrier materials according to the invention are converted into the desired printing form in a known manner by imagewise exposure or irradiation and washing out of the non-image areas with a developer, preferably an aqueous developer solution.
  • the materials according to the invention are characterized in that, after application of a radiation-sensitive coating, a reproduction material is produced which shows very little under-radiation during the irradiation process in the copying frame and, moreover, good water flow (good water storage capacity and low water requirement, fast) during the printing process with printing forms made from the reproduction material Free running when printing).
  • a variety of the requirements of a practical reproductive material described at the outset can also be met, in particular this applies to the requirements for the interaction of carrier material / radiation-sensitive coating, so that a practical carrier material can also be produced for the highest demands if the parameters according to the invention are observed, which is also continuously possible in modern strip treatment plants.
  • the special advantages also include increased mechanical resistance of the material, which can be demonstrated, for example, by increased print runs.
  • FIGS. 1 a and 1 b (approximately in 240 or 1200 times magnification), which are made after scanning electron microscope images, show the different orders of magnitude and the distribution of the holes 2 in the basic structure of the feature a) or the elevations 1 in the superimposed structure of feature b);
  • FIG. 2 shows a section through the surface that is not to scale, from which an approximate size relationship between the holes 3 in the elevations 1 of the superimposed structure and the holes 2 in FIG Basic structure can be seen.
  • 3 and 4 were made in accordance with DE-OS 30 12 135 and show in FIG. 3 the primary structure of the surface with uniform hills 4 and the holes 5 in these hills, the respective bisecting axis of the holes being approximately vertical to the base surface of the material, and in Fig. 4 the comparable primary structure of the surface with uniform hills 4 and the holes 6, which overlay the primary structure as a secondary structure and whose respective bisecting axis is approximately perpendicular to the tangent to the outer surface of the hill.
  • Example 1 The procedure of Example 1 is followed, but the mechanical roughening and the alkaline intermediate treatment are omitted.
  • the topography of the surface (“double structure") that can be achieved in Example 1 is not achieved, but rather only an unevenly roughened carrier, penetrated by scars, is obtained. Image reproduction, water flow and print run are considerably worse than in example 1.
  • the mechanically roughened tape is treated as indicated in Example 1.
  • the electrochemical roughening is in a 1.5% aqueous HN0 3 solution containing 5% of Al (N0 3 ) 3 at 30 ° C, a residence time of 15 sec and with alternating current with a current density of 100 A / dm 2 .
  • the radiation-sensitive layer to be applied according to Example 1 additionally contains 5.5 parts by weight of a reaction product of a polyvinyl butyral (containing vinyl butyral, vinyl acetate and vinyl alcohol units) and propenylsulfonyl isocyanate. Development takes place in a weakly alkaline aqueous solution containing 1% sodium metasilicate, 3% nonionic surfactant and 5% benzyl alcohol. Image reproduction and water flow correspond to that of Example 1, the print run is about 50,000 prints higher.
  • Example 3 The procedure of Example 3 is followed, but the mechanical roughening and the alkaline intermediate treatment are omitted.
  • the topography of the surface (“double structure") that can be achieved in Example 3 is not achieved, but only a rather unevenly roughened carrier, penetrated by a few scars, is obtained. Image reproduction, water flow and print run are considerably worse than in example 3.
  • the carrier material is roughened relatively uniformly, but the surface does not have a “double structure”, ie the parameters which are caused by this special structure are not present or are not in the ranges claimed according to the invention.
  • the printing form After the printing form has been produced, it is found that the water flow and the print run are better than in V4, but have not yet reached Example 3, in particular the practically not improved tendency to under radiation has remained.
  • Example 3 The procedure of Example 3 is followed, but either a matt coating according to DE-OS 25 12 043 is applied to the radiation-sensitive layer or an addition of particles is mixed into the radiation-sensitive layer according to DE-OS 29 26 236. These modifications of the layer should lead to a reduction in the tendency to under radiation (see introduction to the description). The image reproduction of printing forms produced therewith is practically unchanged from those which are produced according to Example 3 without modification of the layer, i. H. When using a material having the “double structure” according to the invention as a support for offset printing plates, this type of special modification of the radiation-sensitive layer can be dispensed with.
  • the mechanically roughened strip is treated for 10 seconds in a 3% aqueous NaOH solution at 50 ° C. in such a way that about 2.5 g / m 2 are removed from the surface.
  • the electrochemical roughening is also carried out continuously in a 1% aqueous HCl solution containing 2% AlCl 3 6 H 2 0 at 40 ° C, a dwell time of 20 sec and with an alternating current with a current density of 70 A / dm 2 carried out.
  • Anodic oxidation and radiation-sensitive coating take place according to the information in Example 1. Image reproduction and water flow are rather better than in example 1, the print run is around 100,000 prints.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • ing And Chemical Polishing (AREA)
  • Laminated Bodies (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Lubricants (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP84101145A 1983-02-14 1984-02-04 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 Expired EP0118740B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84101145T ATE46293T1 (de) 1983-02-14 1984-02-04 Platten-, folien- oder bandfoermiges material aus mechanisch und elektrochemisch aufgerauhtem aluminium, ein verfahren zu seiner herstellung und seine verwendung als traeger fuer offsetdruckplatten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3305067 1983-02-14
DE19833305067 DE3305067A1 (de) 1983-02-14 1983-02-14 Platten-, folien- oder bandfoermiges material aus mechanisch und elektrochemisch aufgerauhtem aluminium, ein verfahren zu seiner herstellung und seine verwendung als traeger fuer offsetdruckplatten

Publications (3)

Publication Number Publication Date
EP0118740A2 true EP0118740A2 (fr) 1984-09-19
EP0118740A3 EP0118740A3 (en) 1987-02-04
EP0118740B1 EP0118740B1 (fr) 1989-09-13

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EP84101145A Expired EP0118740B1 (fr) 1983-02-14 1984-02-04 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

Country Status (11)

Country Link
US (1) US4655136A (fr)
EP (1) EP0118740B1 (fr)
JP (1) JPH0676677B2 (fr)
AT (1) ATE46293T1 (fr)
AU (1) AU573566B2 (fr)
BR (1) BR8400604A (fr)
CA (1) CA1240951A (fr)
DE (2) DE3305067A1 (fr)
ES (1) ES529693A0 (fr)
FI (1) FI82905C (fr)
ZA (1) ZA84821B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0595179A1 (fr) * 1992-10-28 1994-05-04 Fuji Photo Film Co., Ltd. Procédé pour la préparation d'une feuille d'aluminium utilisé comme support pour une plaque d'impression lithographique
WO1995018019A1 (fr) * 1993-12-27 1995-07-06 Hoechst Aktiengesellschaft Procede d'application thermique de couches hydrophiles sur des substrats hydrophobes et utilisation des substrats ainsi revetus comme supports de plaques offset
EP0649751A3 (fr) * 1993-09-30 1997-05-28 Canon Kk Méthode pour la formation d'une image, procédé et dispositif pour la production de plaques décoratives en aluminium.
EP0778158A1 (fr) * 1995-12-04 1997-06-11 Bayer Corporation Plaques d'impression lithographiques avec une surface lisse et brillante

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JPS61122649A (ja) * 1984-11-19 1986-06-10 Fuji Photo Film Co Ltd ポジ型感光性平版印刷版
JPH0773953B2 (ja) * 1985-10-22 1995-08-09 三菱化学株式会社 感光性平版印刷版
DE3635303A1 (de) 1986-10-17 1988-04-28 Hoechst Ag Verfahren zur abtragenden modifizierung von mehrstufig aufgerauhten traegermaterialien aus aluminium oder dessen legierungen und deren verwendung bei der herstellung von offsetdruckplatten
US4978583A (en) * 1986-12-25 1990-12-18 Kawasaki Steel Corporation Patterned metal plate and production thereof
DE3838334C2 (de) * 1987-11-12 1999-08-12 Fuji Photo Film Co Ltd Verfahren zur Herstellung eines Aluminiumträgers für eine lithographische Druckplatte
DE4001466A1 (de) * 1990-01-19 1991-07-25 Hoechst Ag Verfahren zur elektrochemischen aufrauhung von aluminium fuer druckplattentraeger
JPH0524376A (ja) * 1991-07-24 1993-02-02 Fuji Photo Film Co Ltd 平版印刷版用支持体
US5543961A (en) * 1993-06-10 1996-08-06 The United States Of America As Represented By The Administator Of The National Aeronautics And Space Administration Far-infrared diffuse reflector
JP3244880B2 (ja) * 1993-08-13 2002-01-07 三菱製紙株式会社 平版印刷版
US5427889A (en) * 1993-08-13 1995-06-27 Mitsubishi Paper Mills Ltd. Lithographic printing plate with pitted aluminum support
US5552235A (en) * 1995-03-23 1996-09-03 Bethlehem Steel Corporation Embossed cold rolled steel with improved corrosion resistance, paintability, and appearance
US5934197A (en) * 1997-06-03 1999-08-10 Gerber Systems Corporation Lithographic printing plate and method for manufacturing the same
DE19822441A1 (de) * 1997-06-24 1999-01-28 Heidelberger Druckmasch Ag Druckformreinigungsverfahren
DE69818204T2 (de) 1997-12-16 2004-07-01 Fuji Photo Film Co., Ltd., Minami-Ashigara Verfahren zur Herstellung eines Aluminiumträgers für eine Flachdruckplatte
EP1157853A3 (fr) * 2000-05-24 2005-01-05 Hydro Aluminium Deutschland GmbH Procédé de grainage d'un support pour plaques d'impréssion
US6242156B1 (en) * 2000-06-28 2001-06-05 Gary Ganghui Teng Lithographic plate having a conformal radiation-sensitive layer on a rough substrate
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EP0595179A1 (fr) * 1992-10-28 1994-05-04 Fuji Photo Film Co., Ltd. Procédé pour la préparation d'une feuille d'aluminium utilisé comme support pour une plaque d'impression lithographique
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EP0778158A1 (fr) * 1995-12-04 1997-06-11 Bayer Corporation Plaques d'impression lithographiques avec une surface lisse et brillante

Also Published As

Publication number Publication date
DE3305067A1 (de) 1984-08-16
ZA84821B (en) 1984-09-26
EP0118740A3 (en) 1987-02-04
DE3479716D1 (en) 1989-10-19
FI82905B (fi) 1991-01-31
AU573566B2 (en) 1988-06-16
FI82905C (fi) 1991-05-10
AU2426184A (en) 1985-08-22
ES8504027A1 (es) 1985-04-16
US4655136A (en) 1987-04-07
CA1240951A (fr) 1988-08-23
ATE46293T1 (de) 1989-09-15
FI840544A7 (fi) 1984-08-15
EP0118740B1 (fr) 1989-09-13
JPH0676677B2 (ja) 1994-09-28
FI840544A0 (fi) 1984-02-10
BR8400604A (pt) 1984-09-18
JPS59182967A (ja) 1984-10-17
ES529693A0 (es) 1985-04-16

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