Patent US2250790A successfully refreshed from Google Patents.
US5124230A
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Silver halide photographic material
Assignee: Fujifilm Holdings Corp
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Filing: 1991-02-04
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Granted: 1992-06-23
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Expires: 2011-02-04
Abstract
Abstract The silver halide photographic material capable of providing very high contrast negative images is disclosed, which has at least one silver halide photographic emulsion layer on a support, wherein the silver halide photographic emulsion layer or another hydrophilic colloid layer provided on the support contains a nucleating agent represented by formula (Ia), (Ib) or (Ic): ##STR1## wherein R 11 , R 12 , R 21 , R 31 , Y 11 , Y 21 , A 11 , A 12 and G 11 are defined in the specification.
Inventors
- 👤 Hisashi Okamura
- 👤 Kazunobu Katoh
- 👤 Morio Yagihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:20
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/485; G03C1/48538; G03C1/48546; G03C1/48561; G03C1/06; G03C1/061
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
247 words
A silver halide photographic material having at least one silver halide photographic emulsion layer on a support, wherein the silver halide photographic emulsion layer or at least one other hydrophilic colloid layer contains at least one compound represented by formula (Ia), (Ib) or (Ic): ##STR38## wherein R 11 represents an aliphatic group or an aromatic group, R 12 represents an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a hydrazino group, a carbamoyl group, or an oxycarbonyl group, G 11 represents ##STR39## a thiocarbonyl group, or an iminomethylene group, A 11 and A 12 both represent a hydrogen atom, or one of them represents a hydrogen atom and the other represents a sulfonyl group or an acyl group, and Y 11 represents a divalent organic group which is an aliphatic group, an aromatic group, a heterocyclic group, or a group shown by following formula (d): ##STR40## wherein Y' 1 represents an aromatic group or a heterocyclic group, R o 1 to R o 4 each represents a hydrogen atom, a halogen atom, or an alkyl group, and r and s each represents 0 or 1; ##STR41## wherein R 21 represents an aliphatic group, Y 21 represents a divalent heterocyclic group, and A 11 and A 12 have the same meaning as in formula (Ia); and ##STR42## wherein R 31 represents an aromatic group, and A 11 , A 12 , and Y 11 have the same meaning as in formula (Ia).
Claim 2
Dependent Claim
247 words
A silver halide photographic material having at least one silver halide photographic emulsion layer on a support, wherein the silver halide photographic emulsion layer or at least one other hydrophilic colloid layer contains at least one compound represented by formula (Ia), (Ib) or (Ic): ##STR38## wherein R 11 represents an aliphatic group or an aromatic group, R 12 represents an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a hydrazino group, a carbamoyl group, or an oxycarbonyl group, G 11 represents ##STR39## a thiocarbonyl group, or an iminomethylene group, A 11 and A 12 both represent a hydrogen atom, or one of them represents a hydrogen atom and the other represents a sulfonyl group or an acyl group, and Y 11 represents a divalent organic group which is an aliphatic group, an aromatic group, a heterocyclic group, or a group shown by following formula (d): ##STR40## wherein Y' 1 represents an aromatic group or a heterocyclic group, R o 1 to R o 4 each represents a hydrogen atom, a halogen atom, or an alkyl group, and r and s each represents 0 or 1; ##STR41## wherein R 21 represents an aliphatic group, Y 21 represents a divalent heterocyclic group, and A 11 and A 12 have the same meaning as in formula (Ia); and ##STR42## wherein R 31 represents an aromatic group, and A 11 , A 12 , and Y 11 have the same meaning as in formula (Ia).
Claim 3
Dependent Claim
19 words
The silver halide photographic material of claim 1, wherein said at least one compound is represented by formula (Ia).
Claim 4
Dependent Claim
19 words
The silver halide photographic material of claim 1, wherein said at least one compound is represented by formula (Ib).
Claim 5
Dependent Claim
19 words
The silver halide photographic material of claim 1, wherein said at least one compound is represented by formula (Ic).
Claim 6
Dependent Claim
21 words
The silver halide photographic material of claim 4, wherein Y 11 in formula (Ic) is a substituted or unsubstituted p-phenylene group.
Claim 7
Dependent Claim
62 words
The silver halide photographic material of claim 1, wherein one of R 11 , R 12 and Y 11 , one of R 21 and Y 21 , and one of R 31 and Y 11 are substituted by groups which are capable of promoting adsorption of the compounds represented by formula (Ia), (Ib) and (Ic) to the silver halide grain surfaces.
Claim 8
Dependent Claim
98 words
The silver halide photographic material of claim 1, wherein R 12 in formula (Ia) is a group represented by the following formula (a): -R.sub.13 Z.sub.11 ( a) wherein Z 11 represents a group capable of splitting the moiety of G 11 --R 13 --Z 11 from the remaining molecule by attacking nucleophilically G 11 , and R 13 is a group formed by removing one hydrogen atom from R 12 , and wherein a cyclic structure is formed with G 11 , R 13 , and Z 11 upon nucleophilical attacking of Z 11 to G 11 .
Claim 9
Dependent Claim
96 words
The silver halide photographic material of claim 7, wherein R 12 in formula (Ia) is a group represented by the following formula (b): ##STR43## wherein R b 1 , R b 2 , R b 3 , and R 6 4 each represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group, and they may be the same or different, B represents an atomic group necessary for forming a 5- or 6-membered ring which may have a substituent, and m and n each represents 0 or 1, n+m being 1 or 2.
Claim 10
Dependent Claim
90 words
The silver halide photographic material of claim 7, wherein R 12 in formula (Ia) is a group represented by the following formula (c): ##STR44## wherein R c 1 and R c 2 , which may be the same or different, each represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, or a halogen atom, R c 3 represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group, p represents 0, 1 or 2, and q represents an integer from 1 to 4.
Claim 11
Dependent Claim
32 words
The silver halide photographic material of claim 1, wherein said at least one compound is contained in an amount of from 1×10 -6 to 5×10 -2 mole per mol of silver halide.
Claim 12
Dependent Claim
23 words
The silver halide photographic material of claim 1, wherein said silver halide photographic emulsion layer is a negative working silver halide emulsion layer.
Claim 13
Dependent Claim
24 words
The silver halide photographic material of claim 1, wherein said silver halide photographic emulsion layer is an internal latent image type halide emulsion layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |