US4002480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide emulsion
Assignee: Fujifilm Holdings Corp
•
Filing: 1975-03-06
•
Granted: 1977-01-11
•
Expires: 1995-03-06
Abstract
Abstract A photographic silver halide emulsion containing at least one dinuclear merocyanine sensitizing dye, and at least one compound represented by the following formula: ##STR1## wherein D represents a divalent aromatic group, R 2 , R 3 , R 4 , and R 5 each represents a hydrogen atom, a hydroxyl group, an alkoxyl group, an aryloxy group, a halogen atom, a heterocyclic group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, an amino group, an alkylamino group, a cycloalkylamino group, an arylamino group, a heterocyclic amino group, an aralkylamino group, or an aryl group.
Inventors
- 👤 Masanao Hinata
- 👤 Yuji Mihara
- 👤 Reiichi Ohi
- 👤 Keiichi Adachi
- 👤 Akira Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:47
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/08; G03C1/10; G03C1/12; G03C1/22; G03C1/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
216 words
A photographic silver halide emulsion containing at least one dinuclear merocyanine dye represented by the formula (Ia): ##STR10## wherein R and R 1 , which may be the same or different, each represents an aliphatic group; Z 1 represents the nonmetallic atoms required to form a 5- or 6-membered heterocyclic nucleus selected from the group consisting of a thiazole nucleus, a thiazoline nucleus, an oxazole nucleus, a selenazole nucleus, a 3,3'-dialkylindolenine nucleus, an imidazole nucleus, a tetrazole nucleus, a pyridine nucleus and a quinoline nucleus; X represents a sulfur atom, an oxygen atom or a N--R' wherein R' represents an alkyl group or an aryl group; L represents a methine group; m represents 1 or 2; and n represents 1, 2, or 3, and at least one compound of the formula (II): ##STR11## wherein D represents a divalent aromatic group, R 2 , R 3 , R 4 , and R 5 , which may be the same or different, each represents a hydrogen atom, a hydroxy group, an alkoxy group, an aryloxy group, a halogen atom, a heterocyclic group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, an amino group, an alkylamino group, a cycloalkylamino group, an arylamino group, a heterocyclic amino group, an aralkylamino group, or an aryl group.
Claim 2
Dependent Claim
216 words
A photographic silver halide emulsion containing at least one dinuclear merocyanine dye represented by the formula (Ia): ##STR10## wherein R and R 1 , which may be the same or different, each represents an aliphatic group; Z 1 represents the nonmetallic atoms required to form a 5- or 6-membered heterocyclic nucleus selected from the group consisting of a thiazole nucleus, a thiazoline nucleus, an oxazole nucleus, a selenazole nucleus, a 3,3'-dialkylindolenine nucleus, an imidazole nucleus, a tetrazole nucleus, a pyridine nucleus and a quinoline nucleus; X represents a sulfur atom, an oxygen atom or a N--R' wherein R' represents an alkyl group or an aryl group; L represents a methine group; m represents 1 or 2; and n represents 1, 2, or 3, and at least one compound of the formula (II): ##STR11## wherein D represents a divalent aromatic group, R 2 , R 3 , R 4 , and R 5 , which may be the same or different, each represents a hydrogen atom, a hydroxy group, an alkoxy group, an aryloxy group, a halogen atom, a heterocyclic group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, an amino group, an alkylamino group, a cycloalkylamino group, an arylamino group, a heterocyclic amino group, an aralkylamino group, or an aryl group.
Claim 3
Dependent Claim
89 words
The photographic silver halide emulsion as claimed in claim 1, wherein said dinuclear merocyanine dye is represented by the formula (Ib): ##STR12## wherein R and R 1 , which may be the same or different, each represents an aliphatic group; R" represents a hydrogen atom, an alkyl group, or an aryl group; X represents a sulfur atom, an oxygen atom, or a >N>R' group, wherein R' represents an alkyl group, or an aryl group; Z 2 represents the nonmetallic atoms required to a thiazole nucleus or a selenazole nucleus.
Claim 4
Dependent Claim
36 words
The photographic silver halide emulsion as claimed in claim 1, wherein said dinuclear merocyanine dye is a compound selected from the group consisting of 3-ethyl-5-[4-(3-ethyl-2-benzothiazolinylidene)-2-butenylidene]rhodanine, 3-ethyl-5-[4-(3-ethyl-2-benzothiazolinylidene)-3-methyl-2-butenylidene]rhodanine, 3-phenyl-1-carboxymethyl-5-[(ethylnaphtho[2,3-d]thiazolin-2-ylidene)-1-phenyl-2-butenylidene]-2-thiohydantoin, 1,3-diethyl-5{[3-(3-sulfopropyl)naphtho[2,3-d]thiazolin-2-ylidene]-1-phenyl-2-butenylidene}-2-thiohydantoin sodium salt, 3-ethyl-5-{[3-(3-sulfopropyl)naphtho[2,3-d]thiazolin-2-ylidene]-1-ethyl-2-butenylidene}rhodanine sodium salt, and 3-(2-sulfoethyl)-5-[(3-ethylnaphtho [2,3-d]thiazolin-2-ylidene)-1-methyl-2-butenylidene]rhodanine.
Claim 5
Dependent Claim
40 words
The photographic silver halide emulsion as claimed in claim 1, wherein at least one of R 2 , R 3 , R 4 , and R 5 is an aryloxy group, a heterocyclic thio group, or a heterocyclic amino group.
Claim 6
Dependent Claim
39 words
The photographic silver halide emulsion as claimed in claim 1, wherein said compound of the formula (II) is a compound selected from the group consisting of sodium 4,4'-bis[4,6-di(benzothiazoyl-2-thio)pyrimidin-2-ylamino]stilbene-2,2'-disulfonate, sodium 4,4'-bis[4,6-di(benzothiazoyl-2-amino)pyrimidin-2-ylamino]stilbene-2,2'-disulfonate, disodium 4,4'-bis[4,6-di(benzoimidazolyl-2-thio)pyrimidin-2-ylamino]stilbene-2,2'-disulfonate, disodium 4,4'-bis[4,6-di(naphthyl-2-oxy)pyrimidin-2-ylamino]stilbene-2,2'-disulfonate, disodium 4,4'-bis[4,6-di(naphthyl-2-oxy)pyrimidin-2-ylamino]dibenzyl-2,2'-disulfonate, and disodium 4,4'-bis(4,6-diphenoxypyrimidin-2-ylamino)stilbene-2,2'-disulfonate.
Claim 7
Dependent Claim
40 words
The photographic silver halide emulsion as claimed in claim 1, wherein the dinuclear merocyanine dye is present in an amount of about 2 × 10 - 5 to 2 × 10 - 3 mole per mole of the silver halide.
Claim 8
Dependent Claim
34 words
The photographic silver halide emulsion as claimed in claim 1, wherein the compound of the formula (II) is present in an amount of about 0.01 to 5 g per mole of the silver halide.
Claim 9
Dependent Claim
21 words
A photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer as claimed in claim 1.
Claim 10
Dependent Claim
35 words
A color photographic light-sensitive material comprising a support having thereon at least two silver halide emulsion layers according to claim 1, with at least one of side silver halide emulsion layers containing a color coupler.
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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |