US4460682A
Expired / Lapsed
US
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Silver halide photographic element
Assignee: Konica Minolta Inc
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Filing: 1982-12-15
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Granted: 1984-07-17
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Expires: 2002-12-15
Abstract
Abstract A novel silver halide photographic element which contains a nondiffusible complex capable of releasing a diffusible, photographically useful material is disclosed. Said nondiffusible complex becomes active for ligand exchange upon reduction under alkalin conditions to release a diffusible, photographically useful material, said complex being represented by the following formula: <IMAGE> wherein La is a quadridentate ligand group; Lb is a didentate ligand group; BALL is a ballast group; PHOTO is a photographically useful material group; Y is a counter ion; and r is the number of counter ions necessary for neutralizing the electric charge on the CO(III) complex.
Inventors
- 👤 Noboru Mizukura
- 👤 Satoru Ikeuchi
- 👤 Shunji Suginaka
- 👤 Noriko Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:47
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C7/00; G03C7/30; G03C7/305; Y; Y10; Y10S; Y10S430/00; Y10S430/137; Y10S430/156
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
101 words
A silver halide photographic element containing a non-diffusible, ligand exchange active complex which when reduced under alkaline conditions becomes active for ligand exchange to release a diffusible, photographically useful material, said ligand exchange active complex having the formula: ##STR18## wherein La is a quadridentate ligand group having at least two coordinatable nitrogen atoms; Lb is a bidentate ligand group selected from among oxygen and nitrogen atoms; BALL is a ballast group; PHOTO is a photographically useful material group; Y is a counter ion; and r is the number of counter ions necessary for neutralizing the electric charge on the Co(III) complex.
Claim 2
Dependent Claim
101 words
A silver halide photographic element containing a non-diffusible, ligand exchange active complex which when reduced under alkaline conditions becomes active for ligand exchange to release a diffusible, photographically useful material, said ligand exchange active complex having the formula: ##STR18## wherein La is a quadridentate ligand group having at least two coordinatable nitrogen atoms; Lb is a bidentate ligand group selected from among oxygen and nitrogen atoms; BALL is a ballast group; PHOTO is a photographically useful material group; Y is a counter ion; and r is the number of counter ions necessary for neutralizing the electric charge on the Co(III) complex.
Claim 3
Dependent Claim
22 words
A silver halide photographic element according to claim 1, wherein said complex is reduced by an electron donor or a precursor thereof.
Claim 4
Dependent Claim
22 words
A silver halide photographic element according to claim 1, wherein the alkaline conditions are such that the pH is more than 12.
Claim 5
Dependent Claim
126 words
A silver halide photographic element according to claim 1, wherein said quadridentate ligand is a group remaining after removal of either one of the groups X 1 , X 2 , R 1 , R 2 , R 3 , R 4 and R 5 of the following formula (II): ##STR19## wherein X 1 and X 2 which may be the same or different are each ##STR20## R 1 to R 7 are each a hydrogen atom, an alkyl group or an aryl group; and A 1 to A 3 which may be the same or different are each an alkylene group selected from the group consisting of methylene, ethylene and propylene groups each of which may have an alkyl or aryl group as a substituent.
Claim 6
Dependent Claim
92 words
A silver halide photographic element according to claim 4, wherein said quadridentate ligand is a group remaining after removal of either one of the groups R 9 to R 12 of the following formula (III): ##STR21## wherein A is an ethylene or propylene group which may have an alkyl or aryl group as a substituent; and R 8 to R 14 are the same as R 1 to R 7 of formula (II), respectively and R 9 and R 10 or R 11 and R 12 may form an unsaturated 6-membered ring.
Claim 7
Dependent Claim
48 words
A silver halide photographic element according to claim 1, wherein said quadridentate ligand is selected from among those derived from (N-N-N-N) type ligands such as triethylenetetramine, 3,7-diazanonane-1,9-diamine and 4,7-diazadecan-1,10-diamine; (N-N-N-O) type ligands such as diethylenetriaminemonoacetic acid; and (O-N-N-O) type ligands such as N,N'-ethylenediaminediacetic acid, N,N'-disalicylideneethylenediamine, N,N'-disalicylidenetrimethylenediamine and N,N'-bis(1-methyl-3-oxobutylidene)ethylenediamine.
Claim 8
Dependent Claim
41 words
A silver halide photographic element according to claim 1, wherein said bidentate ligand is a group remaining after removal of either one of the groups Z 1 , Z 2 , R 8 and R 9 of the formula (III) above.
Claim 9
Dependent Claim
68 words
A silver halide photographic element according to claim 1, wherein said bidentate ligand is a group remaining after removal of either one of the groups R 10 , R 11 and R 12 of the following formula (IV): ##STR22## wherein R 10 and R 11 are each an alkyl group or an aryl group, and R 12 is a hydrogen atom, an alkyl group or an aryl group.
Claim 10
Dependent Claim
79 words
A silver halide photographic element according to claim 1, wherein said bidentate ligand is a group remaining after removal of either one of the groups R 13 to R 16 of the following formula (V): ##STR23## wherein R 13 or R 16 are each a hydrogen atom, a halogen atom, a sulfo, cyano, carboxyl, nitro or alkyl group, and R 13 and R 14 or R 14 and R 15 may form a saturated ring or an unsaturated ring.
Claim 11
Dependent Claim
52 words
A silver halide photographic element according to claim 1, wherein said bidentate ligand is selected from among those derived from (N-N) type ligands such as ethylenediamine, 1,2-diaminopropane, N-methylethylenediamine, N,N-dimethylenediamine and N,N'-dimethylethylenediamine; (O-O) type ligands such as acetylacetone, benzoylacetone, maloic acid and salicylic acid; and (N-O) type ligands such as glycine and alanine.
Claim 12
Dependent Claim
30 words
A silver halide photographic element according to claim 1, wherein said BALL is large enough to make the Co(III) Complex nondiffusible in the alkali permeable layer of the photographic element.
Claim 13
Dependent Claim
37 words
A silver halide photographic element according to claim 1, wherein said PHOTO is selected from among a dye, development restrainer, antifoggant, development accelerator, silver halide solvent, developing agent, toning agent, fixing agent, hardener and precursors of these.
References Cited (Backward Citations)
US4183754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |