US4500633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic material
Assignee: Konica Minolta Inc
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Filing: 1983-02-15
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Granted: 1985-02-19
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Expires: 2003-02-15
Abstract
Abstract A silver halide photographic material having formed on a support two or more layers that have different light sensitivities but have substantially the same color sensitivity is disclosed. In the material, the layer having the highest light sensitivity contains only a compound of formula (I) as a DIR compound and at least one of the remaining layers contains at least one compound of formula (II) as a DIR compound: A--TIME--Z (I) A--Z (II) wherein A is a coupling component capable of reaction with the oxidized product of a color developing agent to release the group TIME--Z (wherein TIME represents a timing group and Z represents a development retarder). The photographic material has improved sharpness and granularity and wide latitude for exposure.
Inventors
- 👤 Hiroshi Menjo
- 👤 Yoshikazu Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:59
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30594; G03C7/3003; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
A silver halide photographic material comprising a support and two or more light-sensitive layers provided thereon that are sensitive to substantially the same spectral region and have different light sensitivities, wherein the light-sensitive layer having the highest light sensitivity contains only a compound of formula (I) and at least one of the remaining layers contains at least one compound of formula (II): A--TIME--Z (I) A--Z (II) wherein A is a coupling component capable of reaction with the oxidized product of a color developing agent to release the group TIME--Z (wherein TIME represents a timing group and Z represents a development inhibitor).
Claim 2
Dependent Claim
101 words
A silver halide photographic material comprising a support and two or more light-sensitive layers provided thereon that are sensitive to substantially the same spectral region and have different light sensitivities, wherein the light-sensitive layer having the highest light sensitivity contains only a compound of formula (I) and at least one of the remaining layers contains at least one compound of formula (II): A--TIME--Z (I) A--Z (II) wherein A is a coupling component capable of reaction with the oxidized product of a color developing agent to release the group TIME--Z (wherein TIME represents a timing group and Z represents a development inhibitor).
Claim 3
Dependent Claim
147 words
A silver halide photographic material according to claim 1, wherein said compound of formula (I) is a compound represented by the following formula (III), (VI) or (VII); ##STR26## wherein A and Z are the same as defined in formula (I); X represents an atomic group necessary for completing a benzene ring or naphthalene ring; R 1 and R 2 each represents a hydrogen atom, an alkyl group or an aryl group; and Nu-X-E corresponds to TIME defined in formula (I), wherein Nu is a nucleophilic group having an electron-rich oxygen, sulfur or nitrogen atom; E is an electrophilic group having an electron-poor carbonyl, thiocarbonyl, phosphinyl or thiophosphinyl group and is bonded to Z; and X which provides a steric relation between Nu and E is subjected to intramolecular nucleophilic substitution reaction after release of Nu from A to form a 3- to 7-membered ring, thereby releasing Z.
Claim 4
Dependent Claim
91 words
A silver halide photographic material according to claim 1, wherein Z in the formulas (I) and (II) is represented by the following formula (VIII) or (IX): Formula (VIII) ##STR27## wherein R 3 is a halogen atom, an acylamino radical, a benzothiazolinylideneamino radical having the formula: ##STR28## (wherein R 4 is an aryl radical or an alkyl radical having from 1 to 4 carbon atoms), or a phenyl-substituted alkoxy radical; or Formula (IX) ##STR29## wherein R 5 is halogen, nitro, an alkoxy, an alkyl, amino, acylamino, hydroxy, carboxy, sulfo or sulfamoyl radical.
Claim 5
Dependent Claim
42 words
A silver halide photographic material according to claim 1, wherein said compound of formula (I) is contained in the layer having the heighest light sensitivity in an amount of 1.0×10 -5 mol to 5.0×10 -1 mol per mol of the silver halide.
Claim 6
Dependent Claim
42 words
A silver halide photographic material according to claim 1, wherein said compound of formula (I) is contained in the layer having the highest light sensitivity in an amount of 1.0×10 -4 mol to 1.0×10 -2 mol per mol of the silver halide.
Claim 7
Dependent Claim
53 words
A silver halide photographic material according to claim 1, wherein said at least one compound of formula (II) is contained in at least one layer other than the layer having the highest light sensitivity in an amount of 1.0 to 10 -4 mol to 5.0×10 -1 mol per mol of the silver halide.
Claim 8
Dependent Claim
48 words
A silver halide photographic material according to claim 1, wherein said compound of formula (II) is contained in at least one layer other than the layer having the highest light sensitivity in an amount of 1.0×10 -3 mol to 2.0×10 -2 mol per mol of the silver halide.
Claim 9
Dependent Claim
22 words
A silver halide photographic material according to claim 1, wherein said two or more light-sensitive layers are blue-sensitive, green-sensitive or red-sensitive layers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |