US4927734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic light-sensitive material and a process for forming a high contrast photographic image
Assignee: DIC Corp
•
Filing: 1988-11-21
•
Granted: 1990-05-22
•
Expires: 2008-11-21
Abstract
Abstract A silver halide photographic light-sensitive material contains at least one negative-working silver halide emulsion layer composed of substantially surface latent image type monodispersed silver halide grains. The emulsion layer or another hydrophilic colloidal layer contains a compound of general formula I or II: ##STR1## wherein each of R 1 , R 2 , R 3 and R 4 represents a hydrogen atom, or a substituted or unsubstituted alkyl or aryl group, and if one of R 3 and R 4 is a hydrogen atom, the other thereof is not a hydrogen atom. Disclosed also is a process which forms a photographic image by employing the material as described above, or a developer containing the compound as shown above.
Inventors
- 👤 Shuji Rokutanda
- 👤 Yasuo Higemitsu
- 👤 Akiyoshi Tsuchida
- 👤 Yukihiro Yamakoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/061
Claims Analysis
Total Claims: 63
Claim 1
Independent Claim
90 words
A silver halide photographic light-sensitive material containing at least one negative-working silver halide photographic emulsion layer comprising substantially surface latent image type monodispersed silver halide grains, said material containing a compound represented by formula I or II: ##STR14## wherein each of R 1 , R 2 , R 3 and R 4 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group provided that if one of R 3 and R 4 is a hydrogen atom, the other cannot be a hydrogen atom.
Claim 2
Dependent Claim
90 words
A silver halide photographic light-sensitive material containing at least one negative-working silver halide photographic emulsion layer comprising substantially surface latent image type monodispersed silver halide grains, said material containing a compound represented by formula I or II: ##STR14## wherein each of R 1 , R 2 , R 3 and R 4 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group provided that if one of R 3 and R 4 is a hydrogen atom, the other cannot be a hydrogen atom.
Claim 3
Dependent Claim
25 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide photographic emulsion layer contains the compound of formula I.
Claim 4
Dependent Claim
25 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide photographic emulsion layer contains the compound of formula II.
Claim 5
Dependent Claim
21 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the alkyl group is a linear alkyl group.
Claim 6
Dependent Claim
21 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the alkyl group is a branched alkyl group.
Claim 7
Dependent Claim
21 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the alkyl group is a cyclic alkyl group.
Claim 8
Dependent Claim
22 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the alkyl group has 1 to 20 carbon atoms.
Claim 9
Dependent Claim
34 words
A silver halide photographic light-sensitive material as set forth in claim 4, wherein the linear alkyl group is a methyl group, an ethyl group, a n-propyl group, a n-butyl group or a n-hexyl group.
Claim 10
Dependent Claim
25 words
A silver halide photographic light-sensitive material as set forth in claim 5, wherein the branched alkyl group is an iso-propyl group or a t-butyl group.
Claim 11
Dependent Claim
25 words
A silver halide photographic light-sensitive material as set forth in claim 6, wherein the cyclic alkyl group is a cyclohexyl group or a cyclopentyl group.
Claim 12
Dependent Claim
28 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted alkyl group is a monocyclic or bicyclic unsubstituted aryl group.
Claim 13
Dependent Claim
28 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted alkyl group is a monocyclic or bicyclic substituted aryl group.
Claim 14
Dependent Claim
27 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted alkyl group is a heterocyclic or a heterocyclicthio group.
Claim 15
Dependent Claim
24 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted alkyl group is a halogen atom.
Claim 16
Dependent Claim
24 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted alkyl group is a hydroxyl group.
Claim 17
Dependent Claim
24 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted alkyl group is an alkoxy group.
Claim 18
Dependent Claim
22 words
A silver halide photographic light-sensitive material as set forth in claim 11, wherein the monocyclic unsubstituted aryl group is a phenyl group.
Claim 19
Dependent Claim
22 words
A silver halide photographic light-sensitive material as set forth in claim 11, wherein the bicyclic unsubstituted aryl group is a naphthyl group.
Claim 20
Dependent Claim
44 words
A silver halide photographic light-sensitive material as set forth in claim 12, wherein the monocyclic substituted aryl group is a 4-methylphenyl group, a 4-iso-propylphenyl group, a 4-hydroxyphenyl group, a 4-hydroxy-3,5,-di-t-butylphenyl group, a 4-methoxyphenyl group, a 4-aminophenyl group, a 4-N,N-dimethylureidophenyl group or a 4-methylthiophenyl group.
Claim 21
Dependent Claim
27 words
A silver halide photographic light-sensitive material as set forth in claim 14, wherein the halogen atom is a chlorine atom, a fluorine atom or a bromine atom.
Claim 22
Dependent Claim
36 words
A silver halide photographic light-sensitive material as set forth in claim 16, wherein the alkoxyl group is a methoxy group, an ethoxy group, a n-propoxy group, an isopropoxy group, a n-butoxy group or a t-butoxy group.
Claim 23
Dependent Claim
58 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituted alkyl group is a benzyl group, a phenethyl group, a 2-chloroethyl group, a 2-methoxyethyl group, a 2-hydroxylethyl group, a 4-methylbenzyl group, a 4-iso-propylbenzyl group, a 4-hydroxybenzyl group, a 4-methoxybenzyl group, a 4-aminobenzyl group, a 4-N,N-dimethylureidobenzyl gorup, a 1-naphthylmethyl group or a 2-naphthylmethyl group.
Claim 24
Dependent Claim
36 words
A silver halide photographic light-sensitive material as set forth in claim 13, wherein the heterocyclic or the heterocyclicthio group is a 5-methylbenzotriazol-l-yl group, a 2-benzothiazolyl group, a 1-benzimidazoyl group, a 5-nitroindazol-l-yl group or a 1-phenyltetrazol-5-yl-thio group.
Claim 25
Dependent Claim
29 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted aryl group is an alkyl group having 1 to 10 atoms.
Claim 26
Dependent Claim
30 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted aryl group is an alkoxyl group having 1 to 10 carbon atoms.
Claim 27
Dependent Claim
24 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted aryl group is a halogen atom.
Claim 28
Dependent Claim
24 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted aryl group is a hydroxy group.
Claim 29
Dependent Claim
27 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted aryl group is an amino- or substituted amino group.
Claim 30
Dependent Claim
24 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituent in the substituted aryl group is a ureido group.
Claim 31
Dependent Claim
55 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the substituted aryl group is a 4-methylphenyl group, a 3-methylphenyl group, an 2-methylphenyl group, a 4-isopropylphenyl group, a 4-methylthiophenyl group, a 4-chlorophenyl group, a 4-methoxyphenyl group, a 4-aminophenyl group, a 4-acetylaminophenyl group, a 4-hydroxyphenyl group, an 2-hydroxyphenyl group or a 4-N,N-dimethylureidophenyl group.
Claim 32
Dependent Claim
32 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein each of the formylhydrazino groups in formulas I or II is located in the 2-position of the pyridine ring.
Claim 33
Dependent Claim
26 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the compound of formula I is a compound represented by the formula: ##STR15##
Claim 34
Dependent Claim
26 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the compound of formula I is a compound represented by the formula: ##STR16##
Claim 35
Dependent Claim
26 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the compound of formula I is a compound represented by the formula: ##STR17##
Claim 36
Dependent Claim
26 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the compound of formula I is a compound represented by the formula: ##STR18##
Claim 37
Dependent Claim
26 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the compound of formula II is a compound represented by the formula: ##STR19##
Claim 38
Dependent Claim
26 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the compound of formula II is a compound represented by the formula: ##STR20##
Claim 39
Dependent Claim
26 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the compound of formula II is a compound represented by the formula: ##STR21##
Claim 40
Dependent Claim
26 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the compound of formula II is a compound represented by the formula: ##STR22##
Claim 41
Dependent Claim
28 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein said material has another hydrophilic colloidal layer containing the compound of formula I or II.
Claim 42
Dependent Claim
34 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the content of the compound of formula I ranges from 1×10 -5 to 1×10 -1 mol per mol of silver halide.
Claim 43
Dependent Claim
34 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the content of the compound of formula II ranges from 1×10 -5 to 1×10 -1 mol per mol of silver halide.
Claim 44
Dependent Claim
28 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide is silver chloride, silver bromide, silver chlorobromide, silver iodobromide or silver iodochlorobromide.
Claim 45
Dependent Claim
35 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide photographic emulsion layer contains a binder in a quantity of not exceeding 250 g per mol of silver halide.
Claim 46
Dependent Claim
33 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide grains comprise silver bromide in an amount of at least 50 mol % of the total amount.
Claim 47
Dependent Claim
33 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide grains comprise silver bromide in an amount of at least 70 mol % of the total amount.
Claim 48
Dependent Claim
47 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide grains comprise silver bromide in an amount of not less than 70 mol % and silver iodide in an amount not exceeding 10 mol %, both based on the total amount.
Claim 49
Dependent Claim
31 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide photographic emulsion layer contains silver halide grains prepared in the presence of an iridium salt.
Claim 50
Dependent Claim
31 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide photographic emulsion layer contains silver halide grains prepared in the presence of a rhodium salt.
Claim 51
Dependent Claim
26 words
A silver halide photographic light-sensitive material as set forth in claim 1, wherein the silver halide grains have an average size of 0.1 to 0.7 micron.
Claim 52
Dependent Claim
108 words
A process for forming a photographic image comprising: exposing to light a silver halide photographic light-sensitive material containing at least one negative-working silver halide emulsion layer composed of substantially surface latent image type monodispersed silver halide grains; and treating said material with a developer in the presence of the compound of formula I or II: ##STR23## wherein each of R 1 , R 2 , R 3 and R 4 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, provided that if one of R 3 and R 4 is a hydrogen atom, the other cannot be a hydrogen atom.
Claim 53
Dependent Claim
108 words
A process for forming a photographic image comprising: exposing to light a silver halide photographic light-sensitive material containing at least one negative-working silver halide emulsion layer composed of substantially surface latent image type monodispersed silver halide grains; and treating said material with a developer in the presence of the compound of formula I or II: ##STR23## wherein each of R 1 , R 2 , R 3 and R 4 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, provided that if one of R 3 and R 4 is a hydrogen atom, the other cannot be a hydrogen atom.
Claim 54
Dependent Claim
29 words
A process as set forth in claim 51, wherein the developer contains at least 0.15 mol of sulfite ion per liter and has a pH of 11 to 12.5.
Claim 55
Dependent Claim
21 words
A process as set forth in claim 51, wherein the silver halide photographic emulsion layer contains the compound of formula I.
Claim 56
Dependent Claim
21 words
A process as set forth in claim 51, wherein the silver halide photographic emulsion layer contains the compound of formula II.
Claim 57
Dependent Claim
26 words
A process as set forth in claim 51, wherein the silver halide photographic light-sensitive material has another hydrophilic colloidal layer containing the compound of formula I.
Claim 58
Dependent Claim
26 words
A process as set forth in claim 51, wherein the silver halide photographic light-sensitive material has another hydrophilic colloidal layer containing the compound of formula II.
Claim 59
Dependent Claim
17 words
A process as set forth in claim 51, wherein the developer contains the compound of formula I.
Claim 60
Dependent Claim
17 words
A process as set forth in claim 51, wherein the developer contains the compound of formula II.
Claim 61
Dependent Claim
13 words
A process as set forth in claim 51, wherein the developer contains hydroquinone.
Claim 62
Dependent Claim
16 words
A process as set forth in claim 51, wherein the developer contains hydroquinone and a 3-pyrazolidone.
Claim 63
Dependent Claim
16 words
A process as set forth in claim 51, wherein the developer contains hydroquinone and an aminophenol.
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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) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |