US3966477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrally sensitized silver halide photographic emulsion
Assignee: Fujifilm Holdings Corp
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Filing: 1974-12-06
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Granted: 1976-06-29
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Expires: 1994-12-06
Abstract
Abstract A silver halide photographic emulsion containing, in combination, supersensitizing amounts of at last two carbocyanine sensitizing dyes as hereinafter defined.
Inventors
- 👤 Masanao Hinata
- 👤 Haruo Takei
- 👤 Tadashi Ikeda
- 👤 Akira Ogawa
- 👤 Akira Sato
- 👤 Atsuo Iwamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:18
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; G03C1/29
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
274 words
A silver halide photographic emulsion containing, in combination, supersensitizing amounts of (A) at least one sensitizing dye of the following formula (I) ##EQU5## wherein Z 1 represents an atomic group required for forming a benzimidazole ring or a β-naphthimidazole ring; Z 2 represents an atomic group required for forming a benzoxazole ring or a β-naphthoxazole ring; R 1 and R 2 each represents an aliphatic group with at least one or R 1 and R 2 representing an alkyl group having a carboxy group or an alkyl group having a sulfo group; R 3 represents a hydrogen atom or an alkyl group; X 1 represents an acid anion; and m is 1 or 2, and when m is 1 the dye forms an intramolecular salt, wherein the benzimidazole ring formed by Z 1 , is substituted in the 5 position with a halogen atom, an alkylcarbonyl group, or an alkoxy carbonyl group, and (B) at least one sensitizing dye of the following general formula (II) ##EQU6## wherein Z 3 represents an atomic group required for forming a benzoxazole ring or a β-naphthoxazole ring; Z 4 represents an atomic group required for forming a benzothiazole ring, a benzoselenazole ring, a β-naphthothiazole ring or a β-naphthoselenazole ring; R 6 represents a hydrogen atom or an alkyl group; R 4 and R 5 each represents an aliphatic group with at least one of R 4 and R 5 representing an alkyl group having a carboxy group or an alkyl group having a sulfo group; X 2 represents an acid anion; and n is 1 or 2, and when n is 1 the dye forms an intramolecular salt.
Claim 2
Dependent Claim
274 words
A silver halide photographic emulsion containing, in combination, supersensitizing amounts of (A) at least one sensitizing dye of the following formula (I) ##EQU5## wherein Z 1 represents an atomic group required for forming a benzimidazole ring or a β-naphthimidazole ring; Z 2 represents an atomic group required for forming a benzoxazole ring or a β-naphthoxazole ring; R 1 and R 2 each represents an aliphatic group with at least one or R 1 and R 2 representing an alkyl group having a carboxy group or an alkyl group having a sulfo group; R 3 represents a hydrogen atom or an alkyl group; X 1 represents an acid anion; and m is 1 or 2, and when m is 1 the dye forms an intramolecular salt, wherein the benzimidazole ring formed by Z 1 , is substituted in the 5 position with a halogen atom, an alkylcarbonyl group, or an alkoxy carbonyl group, and (B) at least one sensitizing dye of the following general formula (II) ##EQU6## wherein Z 3 represents an atomic group required for forming a benzoxazole ring or a β-naphthoxazole ring; Z 4 represents an atomic group required for forming a benzothiazole ring, a benzoselenazole ring, a β-naphthothiazole ring or a β-naphthoselenazole ring; R 6 represents a hydrogen atom or an alkyl group; R 4 and R 5 each represents an aliphatic group with at least one of R 4 and R 5 representing an alkyl group having a carboxy group or an alkyl group having a sulfo group; X 2 represents an acid anion; and n is 1 or 2, and when n is 1 the dye forms an intramolecular salt.
Claim 3
Dependent Claim
72 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 1 is a benzimidazole ring substituted in at least one of the 5- and 6-positions with a chlorine atom, or a β-naphthimidazole ring; the heterocyclic ring formed by Z 2 is an unsubstituted benzoxazole ring, a benzoxazole ring substituted in the 5-position with a phenyl group, or a β-naphthoxazole ring; and R 3 represents a hydrogen atom.
Claim 4
Dependent Claim
82 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 3 is an unsubstituted benzoxazole ring, a benzoxazole ring substituted in the 5-position with a methyl group or a methoxy group, or a β-naphthoxazole ring; the heterocyclic ring formed by Z 4 is a benzothiazole ring or an unsubstituted benzoselenazole ring, a benzoselenazole ring substituted in the 5-position with a methyl group or a methoxy group, or a β-naphthothiazole ring; and R 6 represents an ethyl group.
Claim 5
Dependent Claim
26 words
The silver halide photographic emulsion of claim 1, wherein at least one of R 1 and R 2 represents a sulfoalkyl group or a carboxyalkyl group.
Claim 6
Dependent Claim
26 words
The silver halide photographic emulsion of claim 1, wherein at least one of R 4 and R 5 represents a sulfoalkyl group or a carboxyalkyl group.
Claim 7
Dependent Claim
32 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 3 is a benzoxazole ring substituted in the 5-position with a chlorine atom or a phenyl group.
Claim 8
Dependent Claim
36 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 4 is a benzothiazole ring or a benzoselenazole ring substituted in the 5-position with a phenyl group or a chlorine atom.
Claim 9
Dependent Claim
12 words
The silver halide photographic emulsion of claim 1, including a color coupler.
Claim 10
Dependent Claim
144 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 1 is a benzimidazole ring substituted in at least one of the 5- and 6-positions with a chlorine atom, or a β-naphthimidazole ring; the heterocyclic ring formed by Z 2 is an unsubstituted benzoxazole ring, a benzoxazole ring substituted in the 5-position with a phenyl group, or a β-naphthoxazole ring; R 3 represents a hydrogen atom; the heterocyclic ring formed by Z 3 is an unsubstituted benzoxazole ring, a benzoxazole ring substituted in the 5-position with a methyl group or a methoxy group, or a β-naphthoxazole ring; the heterocyclic ring formed by Z 4 is a benzothiazole ring or an unsubstituted benzoselenazole ring, a benzoselenazole ring substituted in the 5-position with a methyl group or a methoxy group, or a β-naphthothiazole ring; and R 6 represents an ethyl group.
Claim 11
Dependent Claim
60 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 3 is a benzoxazole ring substituted in the 5-position with a chlorine atom or a phenyl group and the heterocyclic ring formed by Z 4 is a benzothiazole ring or a benzoselenazole ring substituted in the 5-position with a phenyl group or a chlorine atom.
Claim 12
Dependent Claim
16 words
A photographic material comprising a support having thereon the silver halide photographic emulsion of claim 1.
Claim 13
Dependent Claim
38 words
The silver halide emulsion of claim 1 wherein the heterocyclic ring formed by Z 1 , is a benzimidazole ring substituted in at least one of the 5- or 6-positions with a chlorine atom or a β-naphthimidazole ring.
Claim 14
Dependent Claim
33 words
The silver halide emulsion of claim 1 wherein the heterocyclic ring formed by Z 1 is substituted in the 5- and 6-position with a halogen atom, an alkylcarbonyl group or an alkoxycarbonyl group.
Claim 15
Dependent Claim
121 words
The silver halide emulsion of claim 1 wherein additionally present is a sensitizing dye of the following general formula (I I I) ##EQU7## wherein Z 5 represents an atomic group required for forming a benzimidazole ring or a β-naphthimidazole ring; Z 6 represents an atomic group required for forming a benzothiazole ring; R 7 and R 8 each represents an aliphatic group with at least one of R 7 and R 8 representing an alkyl group having a carboxy group or an alkyl group having a sulfo group; R 9 represents a hydrogen atom or an alkyl group; X 3 represents an acid anion; and p is 1 or 2, and when p is 1 the dye forms an intramolecular salt.
Claim 16
Dependent Claim
79 words
The silver halide photographic emulsion of claim 14, wherein the heterocyclic ring formed by Z 5 is a benzimidazole ring substituted in at least one of the 5- and 6-positions with a chlorine atom, or a β-naphthimidazole ring; the heterocyclic ring formed by Z 6 is an unsubstituted benzothiazole ring or a benzothiazole ring substituted in the 5-position with a methyl group, a methoxy group, a phenyl group or a chlorine atom; and R 9 represents a hydrogen atom.
Claim 17
Dependent Claim
26 words
The silver halide photographic emulsion of claim 14, wherein at least one of R 7 and R 8 represents a sulfoalkyl group or a carboxyalkyl group.
References Cited (Backward Citations)
US3853565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |