EP0096347A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Aluminium alloy, a support of lithographic printing plate and a lithographic printing plate using the same
Assignee: Fujifilm Holdings Corp
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Filing: 1983-05-31
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Granted: —
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Expires: 2003-05-31
Abstract
Abstract An aluminium alloy, a lithographic printing plate support, a lithographic printing plate and a process for producing it are disclosed. The plate support is produced by providing an aluminium alloy material which is comprised of 0.20 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga and Zn and the remainder being aluminium. The alloy may further contain 0.1 to 2% Cu and/or 0.1 to 0.8% Mg. After providing the aluminium material either or both of its surfaces are sujected to a chemical etching treatment in order to provide a uniform and dense grain structure on the surface forming primary pits in the surface having a particularly defined average size. The surface is then optionally subjected to electrochemical etching treatment in an acidic electrolitic solution in order to provide secondary pits on the surface also having a particu-Jarly defined average size. The support base may be further treated to provide in additional coating thereon or directly coated with a light-sensitive layer in order to provide a light-sensitive lithographic printing plate. By providing the particular alloy material and subjecting it to the disclosed treatment the light-sensitive layer has good adhesion with respect to the support.
Inventors
- 👤 Azusa C/O Fuji Photo Film Co. Ltd. Ohashi
- 👤 Akira C/O Fuji Photo Film Co. Ltd. Shirai
- 👤 Hirokazu C/O Fuji Photo Film Co. Ltd. Sakaki
- 👤 Haruo C/O Fuji Photo Film Co. Ltd. Nakanishi
- 👤 Zenichi Sumitomo Light Metal Ind. Ltd. Tanabe
- 👤 Shin Sumitomo Light Metal Ind. Ltd. Tsuchida
- 👤 Yoshikatsu Sumitomo Light Metal Ind. Ltd. Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 04:29
CPC Classifications
C; C22; C22C; C22C21/00; B; B41; B41N; B41N1/00; B41N1/04; B41N1/08; B41N1/083
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
26 words
An aluminum alloy, which contains 0.20 to 1.0% Fe and 0.005 to 0.1% of at least one element selected from among Sn, In, Ga, and Zn.
Claim 2
Dependent Claim
26 words
An aluminum alloy, which contains 0.20 to 1.0% Fe and 0.005 to 0.1% of at least one element selected from among Sn, In, Ga, and Zn.
Claim 3
Dependent Claim
35 words
An aluminum alloy, which contains 0.20% to 1.0% Fe, 0.005 to 0.1% of at least one element selected from among Sn, In, Ga, and Zn, and 0.1 to 2% Cu and/or 0.1 to 0.6% Mg.
Claim 4
Dependent Claim
35 words
An aluminum alloy, which contains 0.20% to 1.0% Fe, 0.005 to 0.1% of at least one element selected from among Sn, In, Ga, and Zn, and 0.1 to 2% Cu and/or 0.1 to 0.6% Mg.
Claim 5
Dependent Claim
35 words
A support for a lithographic printing plate, comprising an aluminum alloy material containing 0.20 to 1.0% Fe and 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga and Zn.
Claim 6
Dependent Claim
35 words
A support for a lithographic printing plate, comprising an aluminum alloy material containing 0.20 to 1.0% Fe and 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga and Zn.
Claim 7
Dependent Claim
24 words
A support for a lithographic printing plate as claimed in Claim 3, further comprising 0.1 to 2% Cu and/or 0.1 to 0.6 % Mg.
Claim 8
Dependent Claim
21 words
A support for a lithographic printing plate as claimed in Claim 3, wherein a surface of the support is chemically etched
Claim 9
Dependent Claim
67 words
A support for a lithographic printing plate as claimed in Claim 5, wherein the surface is chemically etched with an etching solution of an acid selected from the group of acids consisting of hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, and hydrofluoric acid or an alkali solution selected from of the group of alkalis consisting of sodium hydroxide, sodium carbonate, sodium tertiary phosphate and sodium silicate.
Claim 10
Dependent Claim
25 words
A support for a lithographic printing plate as claimed in Claim 5, wherein the surface of the support has an anode oxidation film provided thereon.
Claim 11
Dependent Claim
21 words
A support for a lithographic printing plate as claimed in Claim 5, wherein the surface has provided thereon a subbing layer.
Claim 12
Dependent Claim
27 words
A support for a lithographic printing plate as claimed in Claim 8, wherein the subbing layer is comprised of a hydrophilic cellulose containing a water-soluble metal salt.
Claim 13
Dependent Claim
51 words
A lithographic'printing plate, comprising; a printing plate support comprised of 0.20 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga and Zn, and the remainder being Al, the support having an etched surface; and a light-sensitive layer provided on the etched surface.
Claim 14
Dependent Claim
51 words
A lithographic'printing plate, comprising; a printing plate support comprised of 0.20 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga and Zn, and the remainder being Al, the support having an etched surface; and a light-sensitive layer provided on the etched surface.
Claim 15
Dependent Claim
30 words
An aluminum allpy lithographic printing plate as claimed in Claim 10, wherein the light-sensitive layer is present in an amount within the range of 0.1 to 7 g/m 2 .
Claim 16
Dependent Claim
30 words
An aluminum alloy lithographic printing plate as claimed in Claim 11, wherein the light-sensitive layer is present in an amount within the range of 0.5 to 4 g /m 2.
Claim 17
Dependent Claim
69 words
A support for a lithographic printing plate, which comprises an aluminum alloy material containing 0.20 to 1.0% Fe and 0.005 to 0.1% of one, two or more of Sn, In, Ga, and Zn and having at least on one surface thereof a uniform and dense grain structure formed by subjecting its surface to a chemical etching treatment and then to an electrochemical etching treatment in an acidic electrolytic solution.
Claim 18
Dependent Claim
69 words
A support for a lithographic printing plate, which comprises an aluminum alloy material containing 0.20 to 1.0% Fe and 0.005 to 0.1% of one, two or more of Sn, In, Ga, and Zn and having at least on one surface thereof a uniform and dense grain structure formed by subjecting its surface to a chemical etching treatment and then to an electrochemical etching treatment in an acidic electrolytic solution.
Claim 19
Dependent Claim
27 words
A support for a lithographic printing plate as described i 13, wherein said aluminum alloy material further contains 0.1 to 2% Cu and/or 0.1 to 0.6% Mg.
Claim 20
Dependent Claim
27 words
A support for a lithographic printing plate as described i 13, wherein said aluminum alloy material further contains 0.1 to 2% Cu and/or 0.1 to 0.6% Mg.
Claim 21
Dependent Claim
52 words
A support for a lithographic printing plate as described in Claim 13, wherein the surface of said aluminum alloy material forms a rough plane having primary pits of 0.3 to 1.2 pm (presented as Ra) in average roughness or 1 to 10 µm in average depth formed by the chemical etching treatment.
Claim 22
Dependent Claim
49 words
A support for a lithographic printing plate as described in Claim 13, wherein the surface of said aluminum alloy material forms a rough plane having secondary pits of 1 µm or less in average depth and 5 pm or less in average opening diameter formed by the electrochemical treatment.
Claim 23
Dependent Claim
73 words
A light-sensitive lithographic printing plate, which comprises a support having provided thereon a light-sensitive layer, said support comprising an aluminum alloy material containing 0.20 to 1.0% Fe and 0.005 to 0.1% of one, two or more of Sn, In, Ga, and Zn and having at least on one surface thereof a uniform and dense grain structure formed by subjecting its surface to a chemical etching treatment and then to an electrochemical etching treatment.
Claim 24
Dependent Claim
73 words
A light-sensitive lithographic printing plate, which comprises a support having provided thereon a light-sensitive layer, said support comprising an aluminum alloy material containing 0.20 to 1.0% Fe and 0.005 to 0.1% of one, two or more of Sn, In, Ga, and Zn and having at least on one surface thereof a uniform and dense grain structure formed by subjecting its surface to a chemical etching treatment and then to an electrochemical etching treatment.
Claim 25
Independent Claim
83 words
A method for producing a lighogiaphic printing plate support, comprising the steps of: providing an aluminum alloy material comprised of 0.20 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga, and Zn, and the remainder being aluminum; subjecting a surface of the aluminum alloy material to a chemical etching treatment in order to form uniform and dense grain structure on the surface; subjecting the surface to electrochemical etching treatment in an acidic electrolytic solution.
Claim 26
Independent Claim
83 words
A method for producing a lighogiaphic printing plate support, comprising the steps of: providing an aluminum alloy material comprised of 0.20 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga, and Zn, and the remainder being aluminum; subjecting a surface of the aluminum alloy material to a chemical etching treatment in order to form uniform and dense grain structure on the surface; subjecting the surface to electrochemical etching treatment in an acidic electrolytic solution.
Claim 27
Dependent Claim
33 words
A method for producing a lithographic printing plate support as claimed in Claim 18, wherein the aluminum alloy material is further comprised of 0.1 to 2% Cu, and/or 0.1 to 0.6 % Mg.
Claim 28
Dependent Claim
57 words
A method for producing a lithographic printing plate support as claimed in Claim 19, wherein the chemical etching treatment provides pits in the surface so that the surface has an average roughness (Ra) in the range of 0.3 to 1.2 µm and the pits formed in the surface have an average depth of 1 to 10 µm.
Claim 29
Dependent Claim
43 words
A method for producing a lithographic printing plate support as claimed in Claim 19, wherein the electro- chemical treatment forms secondary pits in the surface having an average depth of I µm or less and an average diameter of 5 µm or less.
Claim 30
Dependent Claim
86 words
A lithographic printing plate support, produced by the process comprising the steps of: providing an aluminum alloy material comprised of 0.2 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga and Zn and the remainder being aluminum; subjecting a surface of the aluminum alloy material to a chemical etching treatment in order to form a uniform and dense grain structure on the surface; and subjecting the surface to an electrochemical etching treatment in an acidic electrolytic solution.
Claim 31
Dependent Claim
86 words
A lithographic printing plate support, produced by the process comprising the steps of: providing an aluminum alloy material comprised of 0.2 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga and Zn and the remainder being aluminum; subjecting a surface of the aluminum alloy material to a chemical etching treatment in order to form a uniform and dense grain structure on the surface; and subjecting the surface to an electrochemical etching treatment in an acidic electrolytic solution.
Claim 32
Dependent Claim
82 words
A lithographic printing plate support produced by the process as claimed in Claim 22, wherein the aluminum alloy material is further comprised of 0.1 to 2% Cu and/or 0.1 to 0.6% Mg, the chamical etching treatment provides primary pits having an average diameter of 0.3 to 1.2 µn and an average depth of 1 to 10 µm, and the electrochemical treatment provides secondary pits having an average depth of 1 pm or less and an average diameter of 5 pm or less.
Claim 33
Independent Claim
147 words
A method for producing a light-sensitive lithographic printing plate, comprising the steps of providing an aluminum alloy material comprised of 0:20 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga, and Zn, 0.1 to 2% Cu and the remainder being aluminum; subjecting a surface of the aluminum alloy material to a chemical etching treatment in order to form a uniform and dense grain structure on the surface with primary pits having an average diameter of 0.3 to 1.2 µm and an average depth of 1 to 10 µm; subjecting the surface to an electrochemical etching treatment in an acidic electrolitic solution to provide secondary pits having an average depth of 1 µm or less and an average diameter of 5 µm or less; and providing a light-sensitive layer on the uniform and dense grain structure in the surface
Claim 34
Independent Claim
147 words
A method for producing a light-sensitive lithographic printing plate, comprising the steps of providing an aluminum alloy material comprised of 0:20 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga, and Zn, 0.1 to 2% Cu and the remainder being aluminum; subjecting a surface of the aluminum alloy material to a chemical etching treatment in order to form a uniform and dense grain structure on the surface with primary pits having an average diameter of 0.3 to 1.2 µm and an average depth of 1 to 10 µm; subjecting the surface to an electrochemical etching treatment in an acidic electrolitic solution to provide secondary pits having an average depth of 1 µm or less and an average diameter of 5 µm or less; and providing a light-sensitive layer on the uniform and dense grain structure in the surface
Claim 35
Dependent Claim
32 words
A method for producing a light-sensitive lithographic printing plate as claimed in Claim 24, wherein the light-sensitive layer is present in an amount within the range of 0.1 to about 7 g/m2.
Claim 36
Dependent Claim
33 words
A method for producing a light-sensitive lithographic printing plate as claimed in Claim 25, wherein the light-sensitive layer is present in an amount within the range of 0.5 to 4 g/m 2 .
References Cited (Backward Citations)
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