US3932188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic lightsensitive material
Assignee: Mitsubishi Paper Mills Ltd
•
Filing: 1975-02-24
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Granted: 1976-01-13
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Expires: 1995-02-24
Abstract
Abstract Irradiation and halation of a silver halide photographic lightsensitive material can be prevented by adding at least one of dyes represented by the following general formula to the layers on one or both sides of the light sensitive material.
Inventors
- 👤 Akira Tanaka
- 👤 Kiyoshi Futaki
- 👤 Bunzo Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:37
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/832
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
83 words
A silver halide photographic lightsensitive material having on one or both sides of a support a layer containing at least one of dyes represented by the general formula: ##SPC9## (wherein X is selected from the group consisting of hydrogen atom, hydroxyl group, halogen atom and lower alkyl group; L is methine group which may be substituted with lower alkyl group at meso-position; M is selected from the group consisting of hydrogen atom, alkali metal and ammonium group; and n is 1 or 2).
Claim 2
Dependent Claim
83 words
A silver halide photographic lightsensitive material having on one or both sides of a support a layer containing at least one of dyes represented by the general formula: ##SPC9## (wherein X is selected from the group consisting of hydrogen atom, hydroxyl group, halogen atom and lower alkyl group; L is methine group which may be substituted with lower alkyl group at meso-position; M is selected from the group consisting of hydrogen atom, alkali metal and ammonium group; and n is 1 or 2).
Claim 3
Dependent Claim
28 words
A silver halide photographic lightsensitive material according to claim 1, which contains the dye in at least one of silver halide emulsion layer, intermediate layer and over-coating layer.
Claim 4
Dependent Claim
27 words
A silver halide photographic lightsensitive material according to claim 1, which contains the dye in at least one of under-coating layer and back-coating layer of the support.
Claim 5
Dependent Claim
27 words
A silver halide photographic lightsensitive material according to claim 1, which contains the dye in an amount of about 1 mg -- about 10 g/m 2 .
Claim 6
Dependent Claim
27 words
A silver halide photographic lightsensitive material according to claim 2, which contains the dye in an amount of about 1 mg -- about 100 mg/m 2 .
Claim 7
Dependent Claim
27 words
A silver halide photographic lightsensitive material according to claim 3, which contains the dye in an amount of about 10 mg -- about 10 g/m 2 .
Claim 8
Dependent Claim
28 words
A silver halide photographic lightsensitive material according to claim 1, wherein the dye has the following general formula: ##SPC10## (wherein L, M and n are as defined above).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |