US5032500A
Expired / Lapsed
US
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Process for the preparation of silver halide photographic emulsion
Assignee: Fujifilm Holdings Corp
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Filing: 1990-01-14
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Granted: 1991-07-16
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Expires: 2010-01-14
Abstract
Abstract A process or the preparation of a silver halide photographic emulsion is provided which comprises the addition of at least one pendant type spectral sensitizing dye containing as a substituent a compound having the effect of inhibiting fog at any time after the formation of silver halide grains, but before the completion of the chemical ripening process. In a preferred embodiment, the addition of said pendant type spectral sensitizing dyes is effected at any time after the formation of silver halide grains, but before former one second of the total time of the chemical ripening process. The pendant type spectral sensitizing dyes are compounds represented by the general formula (III) or (IV): ##STR1## wherein SSD represents a sensitizing dye portion; AF represents a compound portion containing a saturated or unsaturated 5- to 7-membered ring containing at least one nitrogen atom; L 1 represents a divalent connecting group containing at least one of C, N, S and O; L 2 has the same meaning at L 1 and does not connect SSD and AF; l 1 , l 2 and l 3 each represents an integer 1 to 3, l 2 being equal to l 1 or l 3 ; l 4 represents an integer 0 to 3; and l 5 represents an integer 0 or 1, with the proviso that when there is a plurality of L 1 's, L 2 's, SSD's or AF's, they may be the same or different and that when none of L 2 's adjacent to l 5 connect SSD and AF, l 5 represents 0.
Inventors
- 👤 Tadashi Ikeda
- 👤 Mitsuo Saitou
- 👤 Yoshio Inagaki
- 👤 Toshinao Ukai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:45
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/015; G03C1/08; G03C1/10; G03C1/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
A process for the preparation of a silver halide photographic emulsion, which comprises the addition of at least one pendant spectral sensitizing dye containing as a substituent a compound having the effect of inhibiting fog at any time following the formation of silver halide grains, but before the completion of the chemical ripening process, wherein the compound having the effect of inhibiting fog is an azaindene group, an azole group, or an azole containing a mercapto group.
Claim 2
Dependent Claim
77 words
A process for the preparation of a silver halide photographic emulsion, which comprises the addition of at least one pendant spectral sensitizing dye containing as a substituent a compound having the effect of inhibiting fog at any time following the formation of silver halide grains, but before the completion of the chemical ripening process, wherein the compound having the effect of inhibiting fog is an azaindene group, an azole group, or an azole containing a mercapto group.
Claim 3
Dependent Claim
177 words
The process as in claim 1, wherein the compound having the effect of inhibiting fog is represented by the general formula (VII): ##STR20## wherein V 3 , V 4 , V 5 and V 6 each represents a hydrogen atom or a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a halogen atom, a mercapto group, a cyano group, a carboxyl group, a sulfo group, a hydroxyl group, a carbamoyl group, a sulfamoyl group, an amino group, a nitro group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, an acyl group, an acylamino group, a substituted amino group, an alkyl or arylthio group, an alkoxycarbonyl group, and an aryloxcarbonyl group; V 3 , V 4 , V 5 and V 6 each may also represent a divalent connecting group L, or a bond; wherein L represents a divalent connecting group which is an atom or an atomic group comprising at least one C, N, S or O atom.
Claim 4
Dependent Claim
227 words
The process as in claim 1, wherein the compound having the effect of inhibiting fog is represented by the general formula (VIII): ##STR21## wherein X 5 represents an oxygen atom, a sulfur atom or >N--R 6 ; R 6 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; V 7 , V 8 and V 9 each represents a hydrogen atom or a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a halogen atom, a mercapto group, a cyano group, a carboxyl group, a sulfo group, a hydroxyl group, a carbamoyl group, a sulfamoyl group, an amino gorup, a nitro group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, an acyl group, an acylamino group, a substituted amino group, an alkyl or arylthio group, an alkoxycarbonyl group, and an aryloxcarbonyl group; V 7 , V 8 and V 9 each may also represent a divalent connecting group L or a bond; wherein L represents a divalent connecting group which is an atom or an atomic group comprising at least one C, N, S or O atom; V 7 and V 8 may together form a benzo or naphthol condensed ring which may be substituted.
Claim 5
Dependent Claim
203 words
The process as in claim 1, wherein the compound having the effect of inhibiting fog is represented by the general formula (IX): ##STR22## wherein X 6 represents an oxygen atom, a sulfur atom or N--R 7 in which R 7 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; V 10 V 11 each represents a hydrogen atom or a substituted or unsubstituted alkyl gorup, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a halogen atom, a mercapto group, a cyano group, a carboxyl group, a sulfo group, a hydroxyl group, a carbamoyl group, a sulfamoyl group, an amino group, a nitro group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, an acyl group, an acylamino group, a substituted amino group, an alkyl or arylthio group, an alkoxycarbonyl group, and an aryloxcarbonyl group; V 10 and V 11 each may also represent a divalent connecting group L or a bond; wherein L represents a divalent connecting group which is an atom or an atomic group comprising at least one C, N, S or O atom.
Claim 6
Dependent Claim
215 words
The process as in claim 1, wherein the compound having the effect of inhibiting fog is represented by the general formula (X): ##STR23## wherein X 7 represents a nitrogen atom or C--R 9 ; R 8 and R 9 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; V 12 , V 13 , V 14 and V 15 each represents a hydrogen atom or a substituted or unsubstituted alkyl gorup, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a halogen atom, a mercapto group, a cyano group, a carboxyl group, a sulfo group, a hydroxyl group, a carbamoyl group, a sulfamoyl group, an amino group, a nitro group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, an acyl group, an acylamino group, a substituted amino group, an alkyl or arylthio group, an alkoxycarbonyl group, and an aryloxcarbonyl group; V 12 , V 13 , V 14 and V 15 each may also represent a divalent connecting group L or a bond; wherein L represents a divalent connecting group which is an atom or an atomic group comprising at least one C, N, S or O atom.
Claim 7
Dependent Claim
165 words
The process as in claim 1, wherein the compound having the effect of inhibiting fog is represented by the general formula (XI): ##STR24## wherein V 16 and V 17 each represents a hydrogen atom or a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a halogen atom, a mercapto group, a cyano group, a carboxyl group, a sulfo group, a hydroxyl group, a carbamoyl gorup, a sulfamoyl group, an amino group, a nitro group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, an acyl group, an acylamino group, a substituted amino group, an alkyl or arylthio group, an alkoxycarbonyl group, and an aryloxcarbonyl group; V 16 and V 17 each may also represent a divalent connecting group L or a bond; wherein L represents a divalent connecting group which is an atom or an atomic group comprising at least one C, N, S or O atom.
References Cited (Backward Citations)
US4040825A
Cited
US4225666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |