US4690885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic material
Assignee: Fujifilm Holdings Corp
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Filing: 1985-10-16
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Granted: 1987-09-01
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Expires: 2005-10-16
Abstract
Abstract A silver halide photographic material which comprises a support having coated thereon a light-sensitive silver halide emulsion layer, wherein the photographic material contains at least one blocked photographic agent represented by the following general formula (I): ##STR1## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom, or a precursor thereof; R 1 , R 2 and R 3 each represents a hydrogen atom, or a substituent group; and Z represents atoms necessary to form a carbocyclic ring or a heterocyclic ring (except for a heterocyclic ring which contains an NH group at the position adjacent to the carbon atom to which R 1 is attached). The blocked photographic agent is completely stable upon storage of the photographic material, and releases a photographic agent at a desired time upon processing. The blocked photographic agent also exhibits its function to a substantial degree over a wide range of pH.
Inventors
- 👤 Morio Yagihara
- 👤 Akihiko Ikegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:56
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; G03C1/00; G03C1/005; G03C1/06; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158; Y10S430/159; Y10S430/16
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
215 words
A silver halide photographic material which comprises a support having coated thereon a light-sensitive silver halide emulsion layer, wherein the photographic material contains at least one blocked photographic agent represented by the following general formula (I): ##STR10## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom, or a precursor thereof; R 1 represents a member selected from the group consisting of a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an alkoxy group, an oxycarbonyl group, a carbamoyl group, an acyl group, a sulfonyl group, a sulfinyl group and a sulfamoyl group, and R 2 and R 3 each represents a hydrogen atom, or a substituent group; and Z represents atoms necessary to form a cyclopentenone ring, a cyclohexenone ring, a cycloheptenone ring, a benzocycloheptenone ring, a 4-pyridone ring, a 4-quinolone ring, a 2-pyrone ring, a 4-pyrone ring, a 1-thio-2-pyrone ring, a 1-thio-4-pyrone ring, a coumarin ring, a chromone ring or a uracil ring, provided that said uracil ring has an alkyl group on the N atom adjacent to the carbon atom to which R 1 is attached and provided that none of said rings contains an >NH group at the position adjacent to the carbon atom to which R 1 is attached.
Claim 2
Dependent Claim
215 words
A silver halide photographic material which comprises a support having coated thereon a light-sensitive silver halide emulsion layer, wherein the photographic material contains at least one blocked photographic agent represented by the following general formula (I): ##STR10## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom, or a precursor thereof; R 1 represents a member selected from the group consisting of a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an alkoxy group, an oxycarbonyl group, a carbamoyl group, an acyl group, a sulfonyl group, a sulfinyl group and a sulfamoyl group, and R 2 and R 3 each represents a hydrogen atom, or a substituent group; and Z represents atoms necessary to form a cyclopentenone ring, a cyclohexenone ring, a cycloheptenone ring, a benzocycloheptenone ring, a 4-pyridone ring, a 4-quinolone ring, a 2-pyrone ring, a 4-pyrone ring, a 1-thio-2-pyrone ring, a 1-thio-4-pyrone ring, a coumarin ring, a chromone ring or a uracil ring, provided that said uracil ring has an alkyl group on the N atom adjacent to the carbon atom to which R 1 is attached and provided that none of said rings contains an >NH group at the position adjacent to the carbon atom to which R 1 is attached.
Claim 3
Dependent Claim
69 words
A silver halide photographic material as in claim 1, wherein A is a group represented by the following general formula (II): --X).sub.m B (II) wherein B represents a photographic agent moiety which is bonded to X through a hetero atom contained in B; X represents a divalent linkage group which is bonded to a blocking moiety through a hetero atom contained in X; and m is 0 or 1.
Claim 4
Dependent Claim
50 words
A silver halide photographic material as in claim 2, wherein the photographic agent moiety represented by B is selected from the group consisting of an antifoggant, a development inhibitor, a developing agent, an auxiliary developing agent, a fogging agent, a silver halide solvent, a bleach accelerating agent and a dye.
Claim 5
Dependent Claim
31 words
A silver halide photographic material as in claim 3, wherein the photographic agent is selected from the group consisting of mercaptotetrazoles, mercaptotriazoles, mercaptopyrimidines, mercaptobenzimidazoles, mercaptoimidazoles, mercaptobenzoxazoles, mercaptobenzthiazoles, mercaptothiadiazoles, benzotriazoles and indazoles.
Claim 6
Dependent Claim
24 words
A silver halide photographic material as in claim 3, wherein the photographic agent is selected from the group consisting of p-phenylenediamines, hydroquinones and p-aminophenols.
Claim 7
Dependent Claim
17 words
A silver halide photographic material as in claim 3, wherein the photographic agent is selected from pyrazolidones.
Claim 8
Dependent Claim
23 words
A silver halide photographic material as in claim 3, wherein the photographic agent is selected from the group consisting of hydrazines and hydrazides.
Claim 9
Dependent Claim
16 words
A silver halide photographic material as in claim 3, wherein the photographic agent is sodium thiosulfate.
Claim 10
Dependent Claim
17 words
A silver halide photographic material as in claim 3, wherein the photographic agent is selected from aminoalkylthiols.
Claim 11
Dependent Claim
25 words
A silver halide photographic material as in claim 3, wherein the photograhic agent is selected from the group consisting of azo dyes and azomethine dyes.
Claim 12
Dependent Claim
34 words
A silver halide photographic material as in claim 2, wherein the photographic agent moiety represented by B is a coloring material for a color diffusion transfer photographic material or a development inhibitor releasing hydroquinone.
Claim 13
Dependent Claim
30 words
A silver halide photographic material as in claim 2, wherein the photographic agent moiety represented by B is directly bonded to the blocking moiety through a hetero atom contained therein.
Claim 14
Dependent Claim
33 words
A silver halide photographic material as in claim 2, wherein the photographic agent moiety represented by B is bonded to the divalent linkage group represented by X through a hetero atom contained therein.
Claim 15
Dependent Claim
68 words
A silver halide photographic material as in claim 2, wherein the divalent linkage group represented by X is a group which releases the photographic agent by an intramolecular ring closing reaction, a group which releases the photographic agent through intramolecular electron transfer, a group which releases the photographic agent with the elimination of carbon dioxide or a group which releases the photographic agent with the elimination of formaldehyde.
Claim 16
Dependent Claim
30 words
A silver halide photographic material as in claim 14, wherein X is a group represented by the folowing formulae: ##STR11## wherein -(B) represents a bond to the photographic agent moiety.
Claim 17
Dependent Claim
27 words
A silver halide photographic material as in claim 1, wherein R 2 and R 3 each represents a hydrogen atom, an alkyl group or an aryl group.
Claim 18
Dependent Claim
13 words
A silver halide photographic material as in claim 2, wherein m is 0.
Claim 19
Dependent Claim
101 words
A silver halide photographic material as in claim 1, wherein said ring may be substituted with one or more substituents selected from the group consisting of a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyl group, an acylamino group, a nitro group, a cyano group, an oxycarbonyl group, a hydroxy group, a carboxy group, a sulfo group, a ureido group, a sulfonamido group, a sulfamoyl group, a carbamoyl group, an acyloxy group, an amino group, a carbonic acid ester group, a sulfone group and a sulfinyl group.
Claim 20
Dependent Claim
51 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is present in a silver halide emulsion layer, a coupler layer, a subbing layer, a protective layer, an interlayer, a filter layer, an antihalation layer, an image receiving layer, a cover sheet layer, or an auxiliary layer.
Claim 21
Dependent Claim
47 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is an antifoggant and the blocked photographic agent is contained in the photographic material in an amount of 10 -8 to 10 -1 mol per mol of silver in the silver halide emulsion.
Claim 22
Dependent Claim
49 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is a development inhibitor and the blocked photographic agent is contained in the photographic material in an amount of 10 -8 to 10 31 1 mol per mol of silver in the silver halide emulsion.
Claim 23
Dependent Claim
47 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is a developing agent and the blocked photographic agent is contained in the photographic material in an amount of 10 -2 to 10 mol per mol of silver in the silver halide emulsion.
Claim 24
Dependent Claim
51 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is an auxiliary developer of a pyrazolidone type and the blocked photographic agent is contained in the photographic material in an amount of 10 -4 to 10 mol per mol of silver in the silver halide emulsion.
Claim 25
Dependent Claim
48 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is a fogging agent and the blocked photographic agent is contained in the photographic material in an amount of 10 -2 to 10 -6 mol per mol of silver in the silver halide emulsion.
Claim 26
Dependent Claim
48 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is a silver halide solvent and the blocked photographic agent is contained in the photographic material in an amount of 10 -3 to 10 mol per mol of silver in the silver halide emulsion.
Claim 27
Dependent Claim
49 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is a bleach accelerating agent and the blocked photographic agent is contained in the photographic material in an amount of 10 -5 to 10 -1 mol per mol of silver in the silver halide emulsion.
Claim 28
Dependent Claim
42 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is a dye and the blocked photographic agent is contained in an amount of 10 -3 to 1 mol per mol of silver in the silver halide emulsion.
Claim 29
Dependent Claim
50 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is a coloring agent for color diffusion transfer photographic light-sensitive material and the blocked photographic agent is contained in an amount of 10 -3 to 1 mol per mol of silver in the silver halide emulsion.
Claim 30
Dependent Claim
138 words
A silver halide photographic material as in claim 1, wherein the blocked photographic agent is represented by the following general formula (III): ##STR12## wherein B represents a photographic agent moiety which is bonded to X through a hetero atom contained in B; X represents a divalent linkage group which is bonded to a blocking moiety through a hetero atom contained in X; m is 0 or 1; R 1 represents a hydrogen atom, or a substituent selected from the group consisting of an alkyl group, an alkenyl group, an aryl group, an alkoxy group, an oxycarbonyl group, a carbamoyl group, an acyl group, a sulfonyl group, a sulfinyl group, and a sulfamoyl group; R 2 and R 3 each represents a hydrogen atom, an alkyl group, or an aryl group; and Z is as defined in claim 1.
Claim 31
Dependent Claim
13 words
A silver halide photographic material as in claim 2, wherein m is 1.
Claim 32
Dependent Claim
40 words
A silver halide photographic material as in claim 30, wherein the bond formed between X and the blocking moiety is cleaved upon processing and the resulting X-B moiety splits per se rapidly to release a photographic agent corresponding to B.
Claim 33
Dependent Claim
90 words
A silver halide photographic material as in claim 1, wherein A is a group represented by the following general formula (II): --X).sub.m B (II) wherein B represents a photographic agent moiety which is bonded to X through a heteroatom contained in B; X represents a divalent linkage group which is bonded to a blocking moiety through a heteroatom contained in X; m is 0 or 1 and wherein the photographic agent moiety represented by B is a developing agent selected from the group consisting of p-phenylene diamines, hydroquionones and p-aminophenols.
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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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |