US5338657A
Expired / Lapsed
US
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Silver halide photographic material
Assignee: Fujifilm Holdings Corp
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Filing: 1993-04-14
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Granted: 1994-08-16
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Expires: 2013-04-14
Abstract
Abstract A novel silver halide photographic material is disclosed, which comprises at least one methine dye represented by the following formula (I): ##STR1## wherein R 1 represents an alkyl, aryl or heterocyclic group; R 2 and R 3 each represents an alkyl group; R 4 and R 5 each independently represents an alkyl group, an alkoxy group, an aryloxy group, a hydrogen atom, a halogen atom, or a hydroxyl group, provided that at least one of R 4 and R 5 represents an alkyl, alkoxy, or aryloxy group; V 1 and V 2 each independently represents a hydrogen atom, a halogen atom, or an atomic group; L 1 , L 2 , and L 3 each represents a methine group; M represents a charge neutralizing ion; and m represents 0 or a higher number required for the neutralization of electric charge in the dye.
Inventors
- 👤 Takashi Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:23
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/127; G03C1/14; G03C1/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
144 words
A silver halide photographic material, which comprises a light-sensitive silver halide emulsion layer containing a methine dye represented by the following formula (I): ##STR15## wherein R 1 represents an alkyl, aryl or heterocyclic group; R 2 and R 3 each represents an alkyl group; R 4 and R 5 each independently represents an alkyl group, an alkoxy group, an aryloxy group, a hydrogen atom, a halogen atom, or a hydroxyl group, provided that at least one of R 4 and R 5 represents an alkyl, alkoxy, or aryloxy group; V 1 and V 2 each independently represents a hydrogen atom, a halogen atom, or an atomic group; L 1 , L 2 , and L 3 each represents a methine group; M represents a charge neutralizing ion; and m is the number which would result in neutralization of the compound according to formula (I).
Claim 2
Dependent Claim
144 words
A silver halide photographic material, which comprises a light-sensitive silver halide emulsion layer containing a methine dye represented by the following formula (I): ##STR15## wherein R 1 represents an alkyl, aryl or heterocyclic group; R 2 and R 3 each represents an alkyl group; R 4 and R 5 each independently represents an alkyl group, an alkoxy group, an aryloxy group, a hydrogen atom, a halogen atom, or a hydroxyl group, provided that at least one of R 4 and R 5 represents an alkyl, alkoxy, or aryloxy group; V 1 and V 2 each independently represents a hydrogen atom, a halogen atom, or an atomic group; L 1 , L 2 , and L 3 each represents a methine group; M represents a charge neutralizing ion; and m is the number which would result in neutralization of the compound according to formula (I).
Claim 3
Dependent Claim
20 words
The silver halide photographic material as in claim 1, wherein R 1 represents an unsubstituted alkyl or unsubstituted aryl group.
Claim 4
Dependent Claim
19 words
The silver halide photographic material as in claim 1, wherein R 1 represents a methyl, ethyl, or phenyl group.
Claim 5
Dependent Claim
32 words
The silver halide photographic material as in claim 1, wherein R 2 or R 3 represents an unsubstituted alkyl group, an alkyl group substituted by an alkoxy group, or a sulfoalkyl group.
Claim 6
Dependent Claim
47 words
The silver halide photographic material as in claim 1, wherein one of R 4 and R 5 represents an unsubstituted alkyl, unsubstituted alkoxy, or unsubstituted aryloxy group, and the other of R 4 and R 5 represents a hydrogen atom, a halogen atom, or a hydroxyl group.
Claim 7
Dependent Claim
24 words
The silver halide photographic material as in claim 1, wherein R 4 and R 5 each independently represents an alkyl, alkoxy, or aryloxy group.
Claim 8
Dependent Claim
27 words
The silver halide photographic material as in claim 1, wherein R 4 and R 5 each independently represents an unsubstituted alkyl, unsubstituted alkoxy, or unsubstituted aryloxy group.
Claim 9
Dependent Claim
29 words
The silver halide photographic material as in claim 1, wherein V 1 or V 2 represents a hydrogen atom, a halogen atom, an alkyl group, or an alkoxy group.
Claim 10
Dependent Claim
29 words
The silver halide photographic material as in claim 8, wherein V 1 or V 2 is substituted at the 5- or 6-position on the benzothiazole nucleus of formula (I).
Claim 11
Dependent Claim
48 words
The silver halide photographic material as in claim 1, wherein V 1 or V 2 represents an atomic group which is condensed to form a benzene ring with C--C bond at the 5- and 6-positions or at the 6- and 7-positions on the benzothiazole nucleus of formula (I).
Claim 12
Dependent Claim
32 words
The silver halide photographic material as in claim 10, wherein V 1 or V 2 is condensed with C--C bond at the 5- and 6-positions on the benzothiazole nucleus of formula (I).
Claim 13
Dependent Claim
31 words
The silver halide photographic material as in claim 1, wherein L 1 , L 2 , or L 3 represents a methine group substituted by a methyl, phenyl, or methoxy group.
Claim 14
Dependent Claim
39 words
The silver halide photographic material as in claim 1, wherein the methine dye represented by formula (I) is used as a spectral sensitizing dye in an amount of 4×10 -6 to 8×10 -3 mol per mol of silver halide.
References Cited (Backward Citations)
US4939080A
Cited
US5223389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-15 | 1998-02-14 | 1998-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-15 | 2002-02-14 | 2002-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-15 | 2006-02-14 | 2006-08-16 | $7700.00 | Window Closed / Lapsed |