EP0086654A2
Expired / Lapsed
EP
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Silver halide photographic material
Assignee: Konica Minolta Inc
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Filing: 1983-02-14
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Granted: —
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Expires: 2003-02-14
Abstract
Abstract A silver halide photographic material having improved sharpness and granularity and wide latitude for exposure comprises a support having thereon two or more layers that contain DIR compounds, have different light sensitivities but substantially the same color sensitivity. 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: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).
Inventors
- 👤 Hiroshi Menjo
- 👤 Yoshikazu Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 22:21
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
123 words
A silver halide photographic material comprising a support having thereon two or more light-sensitive layers that contain DIR compounds, are sensitive to substantially the same spectral region, and have different light sensitivities, characterized in that the only DIR compound in the light-sensitive layer having the highest light sensitivity is a compound of formula (I), and the DIR compound in at least one of the remaining layers is 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
123 words
A silver halide photographic material comprising a support having thereon two or more light-sensitive layers that contain DIR compounds, are sensitive to substantially the same spectral region, and have different light sensitivities, characterized in that the only DIR compound in the light-sensitive layer having the highest light sensitivity is a compound of formula (I), and the DIR compound in at least one of the remaining layers is 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
131 words
Photographic material according to Claim 1, characterized in that the compound of formula (I) has the formula (III), (VI) or (VII); wherein A and Z have the meanings given in Claim 1; X represents the atoms necessary to complete a benzene or naphthalene ring; R and R 2 each represents hydrogen, alkyl, or aryl; and Nu-X-E corresponds to TIME as defined in Claim 1, 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
70 words
Photographic material according to Claim 1 or 2 characterized in that wherein Z in the formulae (I) and (II) has the formula (VIII) or (IX): wherein R 3 is halogen, acylamino, a benzothiazolinylidenamino radical having the formula: (wherein R 4 is aryl or alkyl having from 1 to 4 carbon atoms), or phenyl-substituted alkoxy; or wherein R 5 is halogen, nitro, alkoxy, alkyl, amino, acylamino, hydroxy, carboxy, sulfo or sulfamoyl.
Claim 5
Dependent Claim
46 words
Photographic material according to any preceding Claim, characterized in that said compound of formula (I) is contained in the layer having the highest light sensitivity in an amount of 1.0 x 10 -5 mol to 5.0 x 10 -1 mol per mol of the silver halide.
Claim 6
Dependent Claim
44 words
Photographic material according to Claim 4, characterized in that the amount of the compound of formula (I) in the layer having the highest light sensitivity is from 1.0 x 10 -4 mol to 1.0 x 10 -2 mol per mol of the silver halide.
Claim 7
Dependent Claim
52 words
Photographic material according to any preceding Claim characterized in that 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 to 10 -4 mol to 5.0 x 10 -1 mol per mol of the silver halide.
Claim 8
Dependent Claim
51 words
Photographic material according to Claim 6, characterized in that the amount of the compound of formula (II) contained in at least one layer, other than the layer having the highest light sensitivity, is from 1.0 x 10 -3 mol to 2.0 x 10 -2 mol per mol of the silver halide.
Claim 9
Dependent Claim
21 words
Photographic material according to any preceding Claim, characterized in that said two or more light-sensitive layers are blue-sensitive, green-sensitive or red-sensitive.
References Cited (Backward Citations)
No citation records indexed.
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