EP0666329A1 - Aluminium strip for offset printing plates - Google Patents
Aluminium strip for offset printing plates Download PDFInfo
- Publication number
- EP0666329A1 EP0666329A1 EP94101881A EP94101881A EP0666329A1 EP 0666329 A1 EP0666329 A1 EP 0666329A1 EP 94101881 A EP94101881 A EP 94101881A EP 94101881 A EP94101881 A EP 94101881A EP 0666329 A1 EP0666329 A1 EP 0666329A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing plates
- tib2
- offset printing
- strip
- aluminium strip
- 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.)
- Withdrawn
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- 238000007645 offset printing Methods 0.000 title claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 16
- 229910052782 aluminium Inorganic materials 0.000 title claims description 16
- 239000004411 aluminium Substances 0.000 title 1
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910033181 TiB2 Inorganic materials 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims description 3
- 238000007788 roughening Methods 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000001000 micrograph Methods 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/04—Printing plates or foils; Materials therefor metallic
- B41N1/08—Printing plates or foils; Materials therefor metallic for lithographic printing
- B41N1/083—Printing plates or foils; Materials therefor metallic for lithographic printing made of aluminium or aluminium alloys or having such surface layers
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
Definitions
- the invention relates to an aluminum strip for offset printing plates.
- Pure aluminum (AA 1050) is predominantly used as the material for offset printing plates. Alloys of the type AlMn (AA 3003 or 3104) or AlMg (AA 5005) are also used.
- the aluminum strips are usually roughened in the further processing to presensitized printing plates after alkaline degreasing and / or pretreatment. Currently, this roughening takes place predominantly electrochemically in an aqueous solution based on hydrochloric acid or nitric acid under alternating current, sometimes with mechanical roughening upstream.
- This roughening also called grain, aims on the one hand to improve the adhesion of the subsequent coating with a light-sensitive layer, which will later determine the maximum achievable print run, and on the other hand to completely wet the non-image areas with a small amount of water.
- the grain should be as fine and uniform as possible. Local imperfections, which are weaker or unevenly roughened, lead to the water film being torn off and thus to printing in the non-image areas.
- the aluminum strip In order that the electrochemical roughening takes place uniformly and does not have a strip-shaped topography oriented in the rolling direction, the aluminum strip must have a grain that is as fine as possible and not too elongated.
- the grain stretching is controlled via the rolling process (EP-B-0 193 710). Requirement for a uniform and fine grain in the strip is a fine crystalline, globulitic structure of the casting material. For this reason, the pure aluminum melt is grain-refined with an AlTiB pre-alloy before casting.
- the quality of the grain refinement is of particular importance for pure aluminum for use as an offset tape.
- a sufficient amount of grain refinement has to be used in order to avoid elongated crystals, so-called "feather crystals".
- this amount must not be too large because the TiB2 originating from the master alloy tends to agglomerate together with other undesirable impurities, such as oxides. Both phenomena, feathery crystals and TiB2 lines, lead to an uneven or locally disturbed roughening in the end product.
- the invention is based on the object of providing an aluminum strip with a structure which has no local inhomogeneities and can therefore be roughened uniformly as a prerequisite for the good adhesion of a light-sensitive layer applied to the aluminum strip when used for offset printing plates.
- a tape made of pure aluminum is proposed according to the invention, in which foreign particles each have a length of less than 5 ⁇ m and the structure does not have more than 25 TiB2 agglomerates in a line length of maximum 20 ⁇ m in a 150 mm2 grinding surface.
- the micrograph in Fig. 1 shows in part a) in 1000x magnification the TiB2 distribution of a conventional aluminum strip with many foreign particles agglomerated into elongated lines.
- the micrograph of an aluminum strip according to the invention is shown in part b). You can see a comparison of the two Micrographs clearly show the smaller expansion of the TiB2 agglomerates. The few foreign particles in the structure are agglomerated into a short row and in this form do not interfere with the subsequent electrochemical roughening.
- FIG. 2 For comparison, the micrograph of a commercially available grain refining wire is shown in FIG. 2, part a).
- This master alloy is added in an amount of 0.5 to 0.8 kg / t in the casting channel of the aluminum melt.
- the melt which has been cleaned very well by furnace treatment, is subjected to additional cleaning to remove any remaining or formed TiB2 oxide agglomerates behind the grain refinement addition by effective in-line treatment (filtration), e.g. by combining a ceramic filter and SNIF box .
- filtration effective in-line treatment
- the maximum specific filter performance of a ceramic filter is 10 kg / cm2 at 35 t / h throughput.
- the statistical check of the filtration efficiency is carried out by the PoDFA method.
- the melt is cast into ingots in hot-top molds in a continuous casting.
- the casting temperature, measured in the channel, should be below 700 ° C in order to achieve the desired grain refinement effect.
- the casting speed must not be chosen too high, in order not to weaken the favorable influence of grain refinement for suppressing the feathery crystals. It should be less than 5 mm / min.
- the cast bars are heated to about 600 ° C and kept at this temperature for at least 4 h. It is then cooled to the hot rolling temperature at about 50 K / h. The subsequent hot rolling takes place at an initial temperature of approximately 500 ° C to a final temperature of approximately 320 ° C.
- the hot strip end thickness is in the range of 2.5 to 4.5 mm.
- the hot-rolled strip is then cold-rolled to a final thickness of 0.5 to 0.1 mm. Intermediate annealing in the range of 400 to 450 ° C with a holding time of at least 2 h may occur.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
Description
Die Erfindung betrifft ein Aluminiumband für Offsetdruckplatten.The invention relates to an aluminum strip for offset printing plates.
Als Material für Offsetdruckplatten wird überwiegend Reinaluminium (AA 1050) eingesetzt. Aber auch Legierungen vom Typ AlMn (AA 3003 bzw. 3104) oder AlMg (AA 5005) werden verwendet. Die Aluminiumbänder werden in der Weiterverarbeitung zu vorsensibilisierten Druckplatten nach alkalischer Entfettung und/oder Vorbeizung üblicherweise aufgerauht. Derzeit erfolgt dieses Aufrauhen überwiegend elektrochemisch in einer wäßrigen Lösung auf Basis von Salzsäure oder Salpetersäure unter Wechselstrom, manchmal mit vorgeschalteter mechanischer Aufrauhung. Diese Aufrauhung, auch Körnung genannt, bezweckt einerseits eine bessere Haftung der anschließenden Beschichtung mit einer lichtempfindlichen Schicht, was später wesentlich die maximal erreichbare Druckauflage bestimmt, sowie anderereits die vollständige Benetzung der Nichtbildstellen mit einer geringen Wassermenge. Insbesondere aus letzterem Grund sollte die Körnung möglichst fein und gleichmäßig erfolgen. Lokale Fehlstellen, die schwächer oder ungleichmäßig aufgerauht sind, führen zu einem Abriß des Wasserfilms und damit zum Mitdrucken in den Nichtbildstellen.Pure aluminum (AA 1050) is predominantly used as the material for offset printing plates. Alloys of the type AlMn (AA 3003 or 3104) or AlMg (AA 5005) are also used. The aluminum strips are usually roughened in the further processing to presensitized printing plates after alkaline degreasing and / or pretreatment. Currently, this roughening takes place predominantly electrochemically in an aqueous solution based on hydrochloric acid or nitric acid under alternating current, sometimes with mechanical roughening upstream. This roughening, also called grain, aims on the one hand to improve the adhesion of the subsequent coating with a light-sensitive layer, which will later determine the maximum achievable print run, and on the other hand to completely wet the non-image areas with a small amount of water. For the latter reason in particular, the grain should be as fine and uniform as possible. Local imperfections, which are weaker or unevenly roughened, lead to the water film being torn off and thus to printing in the non-image areas.
Damit die elektrochemische Aufrauhung gleichmäßig erfolgt und keine streifenförmige, in Walzrichtung orientierte Topographie aufweist, muß das Aluminiumband an der Oberfläche ein möglichst feines, nicht zu lang gestrecktes Korn aufweisen. Die Kornstreckung wird über den Walzprozeß gesteuert (EP-B-0 193 710). Voraussetzung für ein gleichmäßiges und feines Korn im Band ist ein feinkristallines, globulitisches Gefüge des Gußmaterials. Aus diesem Grund wird die Reinaluminium-Schmelze vor dem Abguß mit einer AlTiB-Vorlegierung korngefeint.In order that the electrochemical roughening takes place uniformly and does not have a strip-shaped topography oriented in the rolling direction, the aluminum strip must have a grain that is as fine as possible and not too elongated. The grain stretching is controlled via the rolling process (EP-B-0 193 710). Requirement for a uniform and fine grain in the strip is a fine crystalline, globulitic structure of the casting material. For this reason, the pure aluminum melt is grain-refined with an AlTiB pre-alloy before casting.
Die Qualität der Kornfeinung ist bei Reinaluminium für den Einsatz als Offsetband von besonderer Wichtigkeit. Einerseits muß eine hinreichende Kornfeinungsmenge verwendet werden, um langgestreckte Kristalle, sogenannte "Fiederkristalle", zu vermeiden. Andererseits darf diese Menge nicht zu groß sein, weil das aus der Vorlegierung stammende TiB₂ dazu neigt, zusammen mit anderen unerwünschten Verunreinigungen, wie Oxiden, zu agglomerieren. Beide Erscheinungen, Fiederkristalle und TiB₂-Zeilen, führen im Endprodukt zu einer ungleichmäßigen bzw. lokal gestörten Aufrauhung.The quality of the grain refinement is of particular importance for pure aluminum for use as an offset tape. On the one hand, a sufficient amount of grain refinement has to be used in order to avoid elongated crystals, so-called "feather crystals". On the other hand, this amount must not be too large because the TiB₂ originating from the master alloy tends to agglomerate together with other undesirable impurities, such as oxides. Both phenomena, feathery crystals and TiB₂ lines, lead to an uneven or locally disturbed roughening in the end product.
Der Erfindung liegt nun die Aufgabe zugrunde, ein Aluminiumband mit einem Gefüge bereitzustellen, das keine lokalen Inhomogenitäten aufweist und deshalb gleichmäßig aufgerauht werden kann als Voraussetzung für die gute Haftung einer bei Verwendung für Offsetdruckplatten aufgebrachten lichtempfindlichen Schicht auf dem Aluminiumband.The invention is based on the object of providing an aluminum strip with a structure which has no local inhomogeneities and can therefore be roughened uniformly as a prerequisite for the good adhesion of a light-sensitive layer applied to the aluminum strip when used for offset printing plates.
Zur Lösung dieser Aufgabe wird erfindungsgemäß ein Band aus Reinaluminium vorgeschlagen, in dem Fremdpartikel eine Länge von jeweils weniger als 5 µm haben und im Gefüge auf 150 mm² Schlifffläche nicht mehr als 25 TiB₂-Agglomerate in einer Zeilenlänge von maximal 20 µm vorhanden sind.To solve this problem, a tape made of pure aluminum is proposed according to the invention, in which foreign particles each have a length of less than 5 μm and the structure does not have more than 25 TiB₂ agglomerates in a line length of maximum 20 μm in a 150 mm² grinding surface.
Das Schliffbild in Fig. 1 zeigt im Bildteil a) in 1000-facher Vergrößerung die TiB₂-Verteilung eines herkömmlichen Aluminiumbandes mit vielen und zu langgestreckten Zeilen agglomerierten Fremdpartikeln. Im Bildteil b) ist das Schliffbild eines erfindungsgemäßen Aluminiumbandes dargestellt. Man erkennt bei einem Vergleich der beiden Schliffbilder deutlich die geringere Ausdehnung der TiB₂-Agglomerate. Die wenigen Fremdpartikel im Gefüge sind zu einer nur kurzen Zeile agglomeriert und stören in dieser Form die spätere elektrochemische Aufrauhung nicht.The micrograph in Fig. 1 shows in part a) in 1000x magnification the TiB₂ distribution of a conventional aluminum strip with many foreign particles agglomerated into elongated lines. The micrograph of an aluminum strip according to the invention is shown in part b). You can see a comparison of the two Micrographs clearly show the smaller expansion of the TiB₂ agglomerates. The few foreign particles in the structure are agglomerated into a short row and in this form do not interfere with the subsequent electrochemical roughening.
Zur Herstellung eines erfindungsgemäßen Aluminiumbandes aus Reinaluminium vom Typ Al99,5, entsprechend AA 1050, wird ein Kornfeinungsdraht aus einer AlTi₃B1-Vorlegierung mit folgenden Parametern verwendet:
- TiB₂-Einzelpartikel ≦ 5 µm
- TiB₂-Agglomerate halbkompakt und kompakt ≦ 30 µm (lang)
- TiB₂-Phasen gleichmäßig wie in Fig. 2 b)
- TiB₂-Phasen nicht größer als 200 µm im Durchmesser, keine Agglomerate
- Oxide ≦ 10 µm bzw. ≦ 80 µm²; Oxidzeilen max. 200 µm lang und max. 2 Stück auf der Prüffläche von 1,3 cm² (Längsschliff).
- TiB₂ single particles ≦ 5 µm
- TiB₂ agglomerates semi-compact and compact ≦ 30 µm (long)
- TiB₂ phases evenly as in Fig. 2 b)
- TiB₂ phases no larger than 200 µm in diameter, no agglomerates
- Oxides ≦ 10 µm or ≦ 80 µm²; Oxide lines max. 200 µm long and max. 2 pieces on the test area of 1.3 cm² (longitudinal grinding).
Zum Vergleich ist in Fig. 2, Bildteil a), das Schliffbild eines handelsüblichen Kornfeinungsdrahtes wiedergegeben.For comparison, the micrograph of a commercially available grain refining wire is shown in FIG. 2, part a).
Diese Vorlegierung wird in einer Menge von 0,5 bis 0,8 kg/t in der Gießrinne der Aluminiumschmelze zugesetzt. Die sehr gut durch Ofenbehandlung gereinigte Schmelze wird hinter der Kornfeinungszugabe durch wirksame In-Line-Behandlung (Filtrierung), z.B. durch Kombination von keramischem Filter und SNIF-Box, einer zusätzlichen Reinigung zur Beseitigung evtl. noch verbliebener oder gebildeter TiB₂-Oxid-Agglomerate unterworfen. Die maximale spezifische Filterleistung eines keramischen Filters beträgt 10 kg/cm² bei 35 t/h Durchsatzleistung. Die statistische Überprüfung der Filtrationswirksamkeit erfolgt durch die PoDFA-Methode.This master alloy is added in an amount of 0.5 to 0.8 kg / t in the casting channel of the aluminum melt. The melt, which has been cleaned very well by furnace treatment, is subjected to additional cleaning to remove any remaining or formed TiB₂ oxide agglomerates behind the grain refinement addition by effective in-line treatment (filtration), e.g. by combining a ceramic filter and SNIF box . The maximum specific filter performance of a ceramic filter is 10 kg / cm² at 35 t / h throughput. The statistical check of the filtration efficiency is carried out by the PoDFA method.
Die Schmelze wird in Hot-Top-Kokillen im Strangguß zu Barren gegossen. Die Gießtemperatur soll, gemessen in der Rinne, unter 700 °C liegen, um den gewünschten Kornfeinungseffekt zu erzielen. Die Gießgeschwindigkeit darf nicht zu hoch gewählt werden, um den günstigen Einfluß der Kornfeinung zur Unterdrückung der Fiederkristalle nicht abzuschwächen. Sie sollte unter 5 mm/min liegen.The melt is cast into ingots in hot-top molds in a continuous casting. The casting temperature, measured in the channel, should be below 700 ° C in order to achieve the desired grain refinement effect. The casting speed must not be chosen too high, in order not to weaken the favorable influence of grain refinement for suppressing the feathery crystals. It should be less than 5 mm / min.
Die Gußbarren werden auf etwa 600 °C erwärmt und mindestens 4 h auf dieser Temperatur gehalten. Anschließend erfolgt die Abkühlung auf Warmwalztemperatur mit etwa 50 K/h. Das anschließende Warmwalzen erfolgt bei einer Anfangstemperatur von etwa 500 °C bis auf eine Endtemperatur von etwa 320 °C. Die Warmbandenddicke liegt im Bereich von 2,5 bis 4,5 mm. Anschließend wird das warmgewalzte Band auf eine Enddicke von 0,5 bis 0,1 mm kaltgewalzt. Eventuell erfolgt eine Zwischenglühung im Bereich von 400 bis 450 °C mit einer Haltezeit von mindestens 2 h.The cast bars are heated to about 600 ° C and kept at this temperature for at least 4 h. It is then cooled to the hot rolling temperature at about 50 K / h. The subsequent hot rolling takes place at an initial temperature of approximately 500 ° C to a final temperature of approximately 320 ° C. The hot strip end thickness is in the range of 2.5 to 4.5 mm. The hot-rolled strip is then cold-rolled to a final thickness of 0.5 to 0.1 mm. Intermediate annealing in the range of 400 to 450 ° C with a holding time of at least 2 h may occur.
Es schließt sich eine alkalische Beizentfettung an, ein Recken zur Herstellung der geforderten Bahnplanheit und evtl. eine Rückbefettung mit einem Öl als Korrosionsschutz beim Transport. Die Weiterverarbeitung zu Druckplatten erfolgt durch
- Beizen in wäßriger Lösung auf Basis NaOH,
- optional mechanische Aufrauhung,
- elektrochemische Aufrauhung (HNO₃ oder HCl) mit Wechselstrom,
- anodische Oxidation,
- ggf. Nachbehandlung der Oberfläche zur Hydrophilierung,
- Beschichtung mit lichtempfindlicher Schicht,
- Konfektionierung zu Druckplatten.
- Pickling in aqueous solution based on NaOH,
- optional mechanical roughening,
- electrochemical roughening (HNO₃ or HCl) with alternating current,
- anodic oxidation,
- if necessary, aftertreatment of the surface for hydrophilization,
- Coating with light-sensitive layer,
- Assembly to printing plates.
Claims (1)
dadurch gekennzeichnet, daß
Fremdpartikel in seinem Gefüge eine Länge von jeweils weniger als 5 µm haben, und auf 150 mm² Schlifffläche nicht mehr als 25 TiB₂-Agglomerate in einer Zeilenlänge von maximal 20 µm vorhanden sind.Pure aluminum tape for offset printing plates,
characterized in that
Foreign particles in its structure have a length of less than 5 µm, and no more than 25 TiB₂ agglomerates with a maximum line length of 20 µm are present on a 150 mm² grinding surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94101881A EP0666329A1 (en) | 1994-02-08 | 1994-02-08 | Aluminium strip for offset printing plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94101881A EP0666329A1 (en) | 1994-02-08 | 1994-02-08 | Aluminium strip for offset printing plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0666329A1 true EP0666329A1 (en) | 1995-08-09 |
Family
ID=8215669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94101881A Withdrawn EP0666329A1 (en) | 1994-02-08 | 1994-02-08 | Aluminium strip for offset printing plates |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0666329A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1752308A1 (en) * | 2005-07-14 | 2007-02-14 | Fuji Photo Film Co., Ltd. | Lithographic printing plate support, method of manufacturing the same, and presensitized plate |
| CN1895908B (en) * | 2005-07-14 | 2010-05-12 | 富士胶片株式会社 | Support for lithographic printing plate, method for producing same, and lithographic printing plate precursor |
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|---|---|---|---|---|
| JPS589946A (en) * | 1981-05-01 | 1983-01-20 | Kobe Steel Ltd | Purifying method for molten al and al alloy |
| JPS6126746A (en) * | 1984-07-18 | 1986-02-06 | Kobe Steel Ltd | Aluminum alloy for lithographic printing plate |
| JPS61262446A (en) * | 1985-05-13 | 1986-11-20 | Kobe Steel Ltd | Method for forming finer crystal grains of al or al alloy |
| US4790873A (en) * | 1983-08-16 | 1988-12-13 | Alcan International Limited | Removing inclusions from molten metal |
| US4869750A (en) * | 1987-04-28 | 1989-09-26 | Alcan International Limited | Liquid metal launder |
| GB2216542A (en) * | 1988-03-07 | 1989-10-11 | Kb Alloys Inc | Third element additions to aluminum-titanium master alloys |
-
1994
- 1994-02-08 EP EP94101881A patent/EP0666329A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS589946A (en) * | 1981-05-01 | 1983-01-20 | Kobe Steel Ltd | Purifying method for molten al and al alloy |
| US4790873A (en) * | 1983-08-16 | 1988-12-13 | Alcan International Limited | Removing inclusions from molten metal |
| JPS6126746A (en) * | 1984-07-18 | 1986-02-06 | Kobe Steel Ltd | Aluminum alloy for lithographic printing plate |
| JPS61262446A (en) * | 1985-05-13 | 1986-11-20 | Kobe Steel Ltd | Method for forming finer crystal grains of al or al alloy |
| US4869750A (en) * | 1987-04-28 | 1989-09-26 | Alcan International Limited | Liquid metal launder |
| GB2216542A (en) * | 1988-03-07 | 1989-10-11 | Kb Alloys Inc | Third element additions to aluminum-titanium master alloys |
Non-Patent Citations (7)
| Title |
|---|
| A.ABDEL-HAMID ET AL: "NATURE ET MORPHOLOGIE DES CRISTAUX RICHES EN TI ET EN B DANS LES ALLIAGES AL-TI-B RICHES EN AL", JOURNAL OF CRYSTAL GROWTH, vol. 66, 1984, AMSTERDAM NL, pages 195 - 204, XP024421131, DOI: doi:10.1016/0022-0248(84)90091-5 * |
| ALUMINIUM (DUESSELDORF) (1991), 67(5), 463-8, 473 CODEN: ALUMAB;ISSN: 0002-6689, 1991 * |
| CHEMICAL ABSTRACTS, vol. 115, no. 14, 7 October 1991, Columbus, Ohio, US; abstract no. 140407, HOLZE, JOACHIM ET AL: "Grain refinement of cast aluminum strip with aluminum-titanium-boron master alloy wire" * |
| CHR. J. SIMENSEN: "THE EFFECT OF MELT REFINING UPON INCLUSIONS IN ALUMINUM", METALLURGICAL TRANSACTIONS B. PROCESS METALLURGY, vol. 13, no. 1, March 1982 (1982-03-01), NEW YORK US, pages 31 - 34 * |
| DATABASE WPI 1986 Derwent World Patents Index; AN 078312 * |
| PATENT ABSTRACTS OF JAPAN vol. 11, no. 123 (M - 581) 17 April 1987 (1987-04-17) * |
| PATENT ABSTRACTS OF JAPAN vol. 7, no. 77 (C - 159) 30 March 1983 (1983-03-30) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1752308A1 (en) * | 2005-07-14 | 2007-02-14 | Fuji Photo Film Co., Ltd. | Lithographic printing plate support, method of manufacturing the same, and presensitized plate |
| CN1895908B (en) * | 2005-07-14 | 2010-05-12 | 富士胶片株式会社 | Support for lithographic printing plate, method for producing same, and lithographic printing plate precursor |
| CN101596817B (en) * | 2005-07-14 | 2011-03-09 | 富士胶片株式会社 | Method of manufacturing lithographic printing plate support |
| US8338073B2 (en) | 2005-07-14 | 2012-12-25 | Fujifilm Corporation | Lithographic printing plate support, method of manufacturing the same, and presensitized plate |
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