US3877946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element
Assignee: Fujifilm Holdings Corp
•
Filing: 1972-01-19
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Granted: 1975-04-15
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Expires: 1992-01-19
Abstract
Abstract A photographic element for use in silver halide photography having a silver halide emulsion layer, a protective layer, a subbing layer or a diffusion-transfer image-receiving layer, each using gelatin as the main binding component, in which into one of said layers are incorporated a nonionic water-soluble polymer and a phase separation inhibitor containing the GROUPS IN 50, 50 - X and X molar % proportions, respectively, X being not more than 50 and R being an alkyl group having from 1 to 4 carbon atoms. The photographic element has reduced propensity to curling and to becoming sticky after stabilization processing.
Inventors
- 👤 Nobuo Tsuji
- 👤 Tatsuya Tajima
- 👤 Yoshinori Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:44
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03C1/76; G03C8/00; G03C8/42; G03C8/52
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
125 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON AT LEAST ONE LAYER CONSISTING ESSENTIALLY OF GELATIN, A NONIONIC WATER-SOLUBLE POLYMER WHICH IS PHOTOGRAPHICALLY COMPATIBLE WITH SAID GELATIN AND A POLYMER WHICH IS A PHASESEPEATION INHIBITOR FOR SAID GELTAIN AND SAID NONIONIC WATERSOLUBLE POLYMER, SAID POLYMER COMPRISING 50 MOLE % OF VINYL ACETATE, (50 - X) MOLE % OF MALEIC ACID AND X MOLE % OF A HALF ALKYL ESTER MALEIC ACID, WHEREIN X IS 0 X 50 AND THE ALKYL GROUP IN SAID HALF ALKYL ESTER HAS 1 TO 4 CARBON ATOMS, WHEREIN THE PROPORTION OF SAID GELATIN, SAID NONIONIC WATERSOLUBLE POLYMER AND SAID POLYMER IS 5 TO 70, 90 TO 15 AND 5 TO 15 BY WEIGHT, RESPECTIVELY, SAID POLYMER BEING A PHASESEPARATION INHIBITOR.
Claim 2
Dependent Claim
125 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON AT LEAST ONE LAYER CONSISTING ESSENTIALLY OF GELATIN, A NONIONIC WATER-SOLUBLE POLYMER WHICH IS PHOTOGRAPHICALLY COMPATIBLE WITH SAID GELATIN AND A POLYMER WHICH IS A PHASESEPEATION INHIBITOR FOR SAID GELTAIN AND SAID NONIONIC WATERSOLUBLE POLYMER, SAID POLYMER COMPRISING 50 MOLE % OF VINYL ACETATE, (50 - X) MOLE % OF MALEIC ACID AND X MOLE % OF A HALF ALKYL ESTER MALEIC ACID, WHEREIN X IS 0 X 50 AND THE ALKYL GROUP IN SAID HALF ALKYL ESTER HAS 1 TO 4 CARBON ATOMS, WHEREIN THE PROPORTION OF SAID GELATIN, SAID NONIONIC WATERSOLUBLE POLYMER AND SAID POLYMER IS 5 TO 70, 90 TO 15 AND 5 TO 15 BY WEIGHT, RESPECTIVELY, SAID POLYMER BEING A PHASESEPARATION INHIBITOR.
Claim 3
Dependent Claim
42 words
The photographic element as claimed in claim 1 wherein said nonionic water-soluble polymer is selected from the group consisting of polyvinyl alcohol; polymers of an acrylamide or methacrylamide, polyvinyl methyl ether, polyvinyl pyrrolidone, polyvinyl oxazolidone, polyvinyl caprolactams, soluble starch and cellulose derivatives.
Claim 4
Dependent Claim
27 words
The photographic element as claimed in claim 1 wherein X is 50, and has an intrinsic viscosity, as measured in a methanolic solution at 30.0C., of 0.64.
Claim 5
Dependent Claim
52 words
The photographic element as claimed in claim 1 wherein said phase-separation inhibitor contains vinyl acetate and the half alkyl ester of maleic acid in which alkyl is the ethyl group in 50 molar % proportions, respectively, said inhibitor having an intrinsic viscosity, as measured in a methanolic solution at 30.0C, of 0.73.
Claim 6
Dependent Claim
60 words
The photographic element as claimed in claim 1 wherein said phase-separation inhibitor contains vinyl acetate, maleic acid, and the half alkyl ester of maleic acid, and maleic acid in which alkyl is the n-butyl group in 50, 30 and 20 molar % proportions, respectively, said inhibitor having an intrinsic viscosity, as measured in a methanolic solution at 30.0C, of 0.42.
Claim 7
Dependent Claim
57 words
The photographic element as claimed in claim 1 wherein said phase-separation inhibitor contains vinyl acetate, maleic acid, and the half alkyl ester of maleic acid in which alkyl is the methyl group in 50, 20 and 30 molar % proportions, respectively, said inhibitor having an intrinsic viscosity, as measured in a methanolic solution at 30.0C, of 0.52.
Claim 8
Dependent Claim
32 words
The photographic element as claimed in claim 1 wherein said phase-separation inhibitor has an intrinsic viscosity as measured in a methanolic solution at 30.0C in the range of from 0.05 to 5.0.
Claim 9
Dependent Claim
32 words
The photographic element as claimed in claim 1 wherein said phase-separation inhibitor has an intrinsic viscosity as measured in a methanolic solution at 30.0C in the range of from 0.3 to 2.0.
Claim 10
Dependent Claim
19 words
The photographic element as claimed in claim 1, wherein said polymer contains the half alkyl ester of maleic acid.
Claim 11
Dependent Claim
20 words
The photographic element as claimed in claim 1, wherein said at least one layer is a silver halide containing layer.
Claim 12
Dependent Claim
18 words
The photographic element as claimed in claim 1, wherein said at least one layer is a protective layer.
Claim 13
Dependent Claim
18 words
The photographic element as claimed in claim 1, wherein said at least one layer is a subbing layer.
Claim 14
Dependent Claim
23 words
The photographic element as claimed in claim 1, wherein said at least one layer is an image receiving layer for a diffusion-transfer process.
Claim 15
Dependent Claim
18 words
The photographic element as claimed in claim 2, wherein said cellulose derivative is hydroxyethyl cellulose or methyl cellulose.
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |