US4576893A
Expired / Lapsed
US
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Presensitized lithographic printing plate precursor
Assignee: Fujifilm Holdings Corp
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Filing: 1984-06-20
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Granted: 1986-03-18
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Expires: 2004-06-20
Abstract
Abstract A presensitized lithographic printing plate precursor is described, comprising an aluminum support that has been rendered hydrophilic having provided thereon a light-sensitive layer composed of a light-sensitive composition comprising (1) an organic solvent-soluble and substantially water-insoluble diazo resin, (2) a substantially water-insoluble, film-forming polymeric compound, and at least one of (3a) an organic solvent-soluble polymeric compound having a sulfonic acid group or a sulfonic acid salt group in its side chain and (3b) a substituted or unsubstituted dipicolinic acid or a salt thereof, the total amount of (3a) and (3b) components being about 1 to about 100% by weight, based on the weight of the diazo resin.
Inventors
- 👤 Eiji Nakakita
- 👤 Akinobu Koike
- 👤 Toshiyuki Sekiya
- 👤 Hiroshi Misu
- 👤 Nobuyuki Kita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:34
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/016; G03F7/021; G03F7/0212; G03F7/0166
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
128 words
A presensitized lithographic printing plate precursor comprising an aluminum support that has been rendered hydrophilic and has provided thereon, a light-sensitive layer composed of a light-sensitive composition comprising in admixture (1) an organic solvent-soluble snd substantially water-insoluble light-sensitive diazo resin, (2) a substantially water-insoluble, film-forming organic polymeric compound, and (3) at least one of a substituted or unsubstituted pyridine-2,6-dicarboxylic acid, wherein said diazo resin is present in an amount of from about 3 to about 30% by weight, based on the total weight of the diazo resin (1) and the substantially water-insoluble, film forming organic polymeric compound (2), and wherein said substituted or unsubstituted pyridine-2,6-dicarboxylic acid is present in an amount of from about 1 to about 100% by weight based on the weight of the diazo resin.
Claim 2
Dependent Claim
128 words
A presensitized lithographic printing plate precursor comprising an aluminum support that has been rendered hydrophilic and has provided thereon, a light-sensitive layer composed of a light-sensitive composition comprising in admixture (1) an organic solvent-soluble snd substantially water-insoluble light-sensitive diazo resin, (2) a substantially water-insoluble, film-forming organic polymeric compound, and (3) at least one of a substituted or unsubstituted pyridine-2,6-dicarboxylic acid, wherein said diazo resin is present in an amount of from about 3 to about 30% by weight, based on the total weight of the diazo resin (1) and the substantially water-insoluble, film forming organic polymeric compound (2), and wherein said substituted or unsubstituted pyridine-2,6-dicarboxylic acid is present in an amount of from about 1 to about 100% by weight based on the weight of the diazo resin.
Claim 3
Dependent Claim
40 words
A presensitized lithographic printing plate precursor as in claim 1, wherein the diazo resin is a Lewis acid salt or organic acid salt of a condensate between an aromatic diazonium compound and an active carbonyl compound or active ether compound.
Claim 4
Dependent Claim
34 words
A presensitized lithographic printing plate precursor as in claim 1, wherein the substantially water-insoluble, film-forming organic polymeric compound is a polyacrylate or polymethacrylate having an acid value of from about 10 to about 200.
Claim 5
Dependent Claim
116 words
A presensitized lithographic printing plate precursor as in claim 3, wherein the organic polymeric compound is a multicomponent copolymer comprising at least (a) 2-hydroxyethyl acrylate or 2-hydroxyethyl methacrylate, (b) acrylonitrile or methacrylonitrile and (c) acrylic acid or methacrylic acid; a multicomponent copolymer comprising at least acrylic acid or methacrylic acid esterified with a group containing a terminal hydroxyl group and a dicarboxylic acid ester residue and acrylic acid or methacrylic acid; a multicomponent copolymer comprising at least a monomer having aromatic hydroxyl groups at its terminals and acrylic acid or methacrylic acid; or a multicomponent copolymer comprising at least (a) an alkyl acrylate or alkyl methacrylate, (b) acrylonitrile or methacrylonitrile and (c) an unsaturated carboxylic acid.
Claim 6
Dependent Claim
45 words
A presensitized lithographic printing plate precursor as in claim 1, wherein the diazo resin is present in an amount of from 5 to 20% by weight, based on the total weight of the diazo resin (1) and the substantially water-insoluble, film-forming organic polymeric compound (2).
Claim 7
Dependent Claim
47 words
A presensitized lithographic printing plate precursor as in claim 1, wherein the substantially water-insoluble, film-forming organic polymeric compound is present in an amount of from about 70 to 95% by weight, based on the total weight of the diazo resin (1) and said organic polymeric compound (2).
Claim 8
Dependent Claim
32 words
A presensitized lithographic printing plate precursor as in claim 1, wherein the light-sensitive composition is coated on the aluminum support in an amount of from 0.5 to 5 g/m 2 (dry basis).
Claim 9
Dependent Claim
39 words
A presensitized lithographic printing plate precursor as in claim 1, wherein the substituted or unsubstituted pyridine-2,6-dicarboxylic acid (3) is present in an amount of from 10 to 50% by weight, based on the weight of the diazo resin (1).
Claim 10
Dependent Claim
42 words
A presensitized lithographic printing plate precursor as in claim 1, wherein a dye or pigment is incorporated in the light-sensitive composition in an amount of from about 5 to about 100% by weight, based on the weight of the diazo resin (1).
Claim 11
Dependent Claim
42 words
A presensitized lithographic printing plate precursor as in claim 1, wherein a dye or pigment is incorporated in the light-sensitive composition in an amount of from about 10 to about 40% by weight, based on the weight of the diazo resin (1).
References Cited (Backward Citations)
US3396019A
Cited
US3219447A
Cited
US3679419A
Cited
US4123276A
Cited
US4172729A
Cited
US4294905A
Cited
US4247597A
Cited
US4408532A
Cited
US4467027A
Cited
US4477552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |