US4010037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrally sensitized silver halide photographic emulsion
Assignee: Fujifilm Holdings Corp
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Filing: 1976-01-28
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Granted: 1977-03-01
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Expires: 1996-01-28
Abstract
Abstract A silver halide photographic emulsion containing, in combination, supersensitizing amounts of at least one sensitizing dye of the following general formula (I) ##STR1## wherein Z 1 and Z 2 each represents an atomic group required for forming a benzimidazole ring; R 1 and R 2 each represents an aliphatic group and at least one of R 1 and R 2 represents an alkyl group having a carboxy group, a hydroxyalkyl group or an alkyl group having a sulfo group; X 1 represents an acid anion; and m is 1 or 2, m being 1 when the dye forms an inner salt (a betaine-like structure) and at least one sensitizing dye of the following general formula (II) ##STR2## 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 3 and R 4 each represents an aliphatic group and at least one of R 3 and R 4 represents an alkyl group having a carboxy group or an alkyl group having a sulfo group; R 5 represents a hydrogen atom or an alkyl group; X 2 represents an acid anion; and n is 1 or 2, n being 1 when the dye forms an inner salt.
Inventors
- 👤 Masanao Hinata
- 👤 Haruo Takei
- 👤 Tadashi Ikeda
- 👤 Mitsuo Iwamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:35
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; G03C1/29
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
237 words
A silver halide photographic emulsion containing, in combination, supersensitizing amounts of at least one sensitizing dye of the following general formula (I) ##STR9##wherein Z 1 and Z 2 each represents an atomic group required for forming a benzimidazole ring and the ring formed by Z 2 or the ring formed by Z 1 is substituted in the 5-position with a chlorine atom, a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, a butoxycarbonyl group, a methylcarbonyl group or an ethylcarbonyl group; R 1 and R 2 each represents an aliphatic group and at least one of R 1 and R 2 represents an alkyl group having a sulfo group; X 1 represents an acid anion; and m is 1 or 2, and when m is 1 the dye forms an inner salt; and at least one sensitizing dye of the following general formula (II) ##STR10##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-naphtholthiazole ring or a β-naphthoselenazole ring; R 3 and R 4 represents an alkyl group having a carboxy group or an alkyl group having a sulfo group; R 5 represents a hydrogen atom or an alkyl group; X 2 represents an acid anion; and n is 1 or 2, and when n is 1 the dye forms an inner salt.
Claim 2
Dependent Claim
237 words
A silver halide photographic emulsion containing, in combination, supersensitizing amounts of at least one sensitizing dye of the following general formula (I) ##STR9##wherein Z 1 and Z 2 each represents an atomic group required for forming a benzimidazole ring and the ring formed by Z 2 or the ring formed by Z 1 is substituted in the 5-position with a chlorine atom, a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, a butoxycarbonyl group, a methylcarbonyl group or an ethylcarbonyl group; R 1 and R 2 each represents an aliphatic group and at least one of R 1 and R 2 represents an alkyl group having a sulfo group; X 1 represents an acid anion; and m is 1 or 2, and when m is 1 the dye forms an inner salt; and at least one sensitizing dye of the following general formula (II) ##STR10##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-naphtholthiazole ring or a β-naphthoselenazole ring; R 3 and R 4 represents an alkyl group having a carboxy group or an alkyl group having a sulfo group; R 5 represents a hydrogen atom or an alkyl group; X 2 represents an acid anion; and n is 1 or 2, and when n is 1 the dye forms an inner salt.
Claim 3
Dependent Claim
40 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 1 and the heterocyclic ring formed by Z 2 is a benzimidazole ring substituted in the 5- and 6-positions with at least one chlorine atom.
Claim 4
Dependent Claim
53 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 3 represents an unsubstituted benzoxazole ring, a benzoxazole ring substituted in the 5-position with a methyl group, a methoxy group, a chlorine atom or a phenyl group, or a β-naphthoxazole ring, and R 5 represents an ethyl group.
Claim 5
Dependent Claim
53 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 4 represents an unsubstituted benzothiazole ring, a benzothiazole ring substituted in the 5-position with a methyl group, a methoxy group, a chlorine atom or a phenyl group, or a β-naphthothiazole ring, and R 5 represents an ethyl group.
Claim 6
Dependent Claim
52 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 4 represents an unsubstituted benzoselenazole ring, a benzoselenazole ring substituted in the 5-position with a methyl group, a methoxy group, a chlorine atom or a phenyl, or a β-naphthoselenazole ring, and R 5 represents an ethyl group.
Claim 7
Dependent Claim
29 words
The silver halide photographic emulsion of claim 1, wherein at least one of R 1 and R 2 represents a sulfoalkyl group, a carboxyalkyl group or a hydroxyalkyl group.
Claim 8
Dependent Claim
26 words
The silver halide photographic emulsion of claim 1, wherein at least one of R 3 and R 4 represents a sulfoalkyl group or a carboxyalkyl group.
Claim 9
Dependent Claim
28 words
The silver halide emulsion of claim 1 wherein the benzimidazole rings formed by Z 1 and Z 2 are each substituted in the 5-position with a chlorine atom.
Claim 10
Dependent Claim
12 words
The silver halide photographic emulsion of claim 1, including a color coupler.
Claim 11
Dependent Claim
90 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 3 represents an unsubstituted benzoxazole ring, a benzoxazole ring substituted in the 5-position with a methyl group, a methoxy group, a chlorine atom or a phenyl group, or a β-naphthoxazole ring, the heterocyclic ring formed by Z 4 represents an unsubstituted benzothiazole ring, a benzothiazole ring substituted in the 5-position with a methyl group, a methoxy group, a chlorine atom or a phenyl group, or a β-naphthothiazole ring, and R 5 represents an ethyl group.
Claim 12
Dependent Claim
90 words
The silver halide photographic emulsion of claim 1, wherein the heterocyclic ring formed by Z 3 represents an unsubstituted benzoxazole ring, a benzoxazole ring substituted in the 5-position with a methyl group, a methoxy group, a chlorine atom or a phenyl group, or a β-naphthoxazole ring, the heterocyclic ring formed by Z 4 represents an unsubstituted benzoselenazole ring, a benzoselenazole ring substituted in the 5-position with a methyl group, a methoxy group, a chlorine atom or a phenyl group, or a β-naphthoselenazole ring, and R 5 represents an ethyl group.
Claim 13
Dependent Claim
16 words
A photographic material comprising a support having thereon the silver halide photographic emulsion of claim 1.
References Cited (Backward Citations)
US3348949A
Cited
US3856532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |