Patent US4542093A successfully refreshed from Google Patents.
US4542093A
Expired / Lapsed
US
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Photographic silverhalide material containing two subbing layers
Assignee: Fujifilm Holdings Corp
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Filing: 1984-07-26
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Granted: 1985-09-17
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Expires: 2004-07-26
Abstract
Abstract A photographic material comprising a hydrophobic support is described, having thereon a first subbing layer formed of a polymeric compound and a second subbing layer comprising a hydrophilic layer containing water-soluble methyl cellulose having a degree of substitution less than 2.5 or water-soluble polyvinyl alcohol having a degree of hydrolysis less than 97 mole % on the first subbing layer.
Inventors
- 👤 Tamotsu Suzuki
- 👤 Sumio Nishikawa
- 👤 Sumitaka Tatsuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:13
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
94 words
A photographic material comprising hydrophobic support having thereon at least one silver halide emulsion layer, a first subbing layer composed of a copolymer of a dienic monomer, and a second subbing layer comprising a hydrophilic layer containng gelatin and water-soluble methyl cellulose having a degree of substitution of 0.5 to 2.6 or gelatin and water-soluble polyvinyl alcohol having a degree of hydrolysis of 60 to 97 mole % on the first subbing layer, wherein said copolymer, said methyl cellulose and said polyvinyl alcohol are added in amounts sufficient to prevent blocking of photographic materials.
Claim 2
Dependent Claim
94 words
A photographic material comprising hydrophobic support having thereon at least one silver halide emulsion layer, a first subbing layer composed of a copolymer of a dienic monomer, and a second subbing layer comprising a hydrophilic layer containng gelatin and water-soluble methyl cellulose having a degree of substitution of 0.5 to 2.6 or gelatin and water-soluble polyvinyl alcohol having a degree of hydrolysis of 60 to 97 mole % on the first subbing layer, wherein said copolymer, said methyl cellulose and said polyvinyl alcohol are added in amounts sufficient to prevent blocking of photographic materials.
Claim 3
Dependent Claim
24 words
A photographic material as in claim 1, wherein the copolymer is a copolymer of a dienic monomer having from 4 to 8 carbon atoms.
Claim 4
Dependent Claim
16 words
A photographic material as in claim 1, wherein the first subbing layer contains a cross-linking agent.
Claim 5
Dependent Claim
15 words
A photographic material as in claim 3, wherein the cross-linking agent is a dichlorotriazine derivative.
Claim 6
Dependent Claim
31 words
A photographic material as in claim 3, wherein the amount of the cross-linking agent is 0.001 to 200% by weight based on the weight of the copolymer of a dienic monomer.
Claim 7
Dependent Claim
40 words
A photographic material as in claim 2, wherein the copolymer is a copolymer of a dienic monomer having from 4 to 8 carbon atoms and is copolymerized with a vinyl or vinylidene compound having from 2 to 8 carbon atoms.
Claim 8
Dependent Claim
29 words
A photographic material as in claim 1, wherein the copolymer of a dienic monomer has a glass transition temperature in the range of from -20° C. to 40° C.
Claim 9
Dependent Claim
33 words
A photographic material as in claim 2, wherein the proportion of the diene component in the copolymer is from about 30 to 60% by weight based on the total weight of the copolymer.
Claim 10
Dependent Claim
33 words
A photographic material as in claim 2, wherein the proportion of the diene component in the copolymer is from about 30 to 40% by weight based on the total weight of the copolymer.
Claim 11
Dependent Claim
29 words
A photographic material as in claim 2, wherein the coating amount of the copolymer in the first subbing layer is from 0.01 to 10 g/m 2 of the support.
Claim 12
Dependent Claim
29 words
A photographic material as in claim 2, wherein the coating amount of the copolymer in the first subbing layer is from 0.2 to 3 g/m 2 of the support.
Claim 13
Dependent Claim
33 words
A photographic material as in claim 1, wherein the second subbing layer contains methyl cellulose in an amount of from about 1% to 99% by weight based on the weight of the binder.
Claim 14
Dependent Claim
33 words
A photographic material as in claim 1, wherein the second subbing layer contains methyl cellulose in an amount of from about 3% to 30% by weight based on the weight of the binder.
Claim 15
Dependent Claim
41 words
A photographic material as in claim 1, wherein the second subbing layer contains a hydrophilic macromolecular binder, and the methyl cellulose is present in an amount of from about 3% to 30% by weight based on the weight of the binder.
Claim 16
Dependent Claim
34 words
A photographic material as in claim 1, wherein the second subbing layer contains water-soluble polyvinyl alcohol in an amount of from about 1 to 99% by weight, based on the weight of the binder.
Claim 17
Dependent Claim
33 words
A photographic material as in claim 1, wherein the second subbing layer contains water-soluble polyvinyl alcohol in amount of from about 5 to 50% by weight, based on the weight of the binder.
Claim 18
Dependent Claim
40 words
A photographic material as in claim 1, wherein the second subbing layer contains a hydrophilic macromolecular binder, and the water-soluble polyvinyl alcohol in an amount of from about 10 to 30% by weight, based on the weight of the binder.
Claim 19
Dependent Claim
24 words
A photographic material as in claim 1, wherein the degree of hydrolysis, of the water-soluble polyvinyl alcohol is from 70 to 95 mole %.
Claim 20
Dependent Claim
24 words
A photographic material as in claim 1, wherein the degree of hydrolysis of the water-soluble polyvinyl alcohol is from 83 to 93 mole %.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-16 | 1989-03-18 | 1989-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-16 | 1993-03-18 | 1993-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-16 | 1997-03-18 | 1997-09-17 | $7700.00 | Window Closed / Lapsed |