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US5185240A
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Silver halide photographic material
Assignee: Fujifilm Holdings Corp
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Filing: 1990-08-10
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Granted: 1993-02-09
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Expires: 2010-08-10
Abstract
Abstract Disclosed is an autopositive silver halide photographic material which comprises at least one silver halide emulsion layer, characterized in that said emulsion layer or at least one other hydrophilic colloid layers contains at least one compound selected from the group consisting of compounds represented by the following general formulas (1), (2) and (3): ##STR1## wherein R 1 represents hydrogen atom or an alkyl group; and R 2 , R 3 and R 4 each represents hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; ##STR2## wherein R 5 represents hydrogen atom or an alkyl group; and R 6 and R 7 each represents hydrogen atom, an alkyl group, a halogen atom or an aryl group; ##STR3## wherein R 8 represents a lower alkylene group; X represents a halogen atom, nitro group, hydroxy group, a cyano group, a lower alkyl group, a lower alkoxy group, ##STR4## or --SO 3 M; R 12 represents hydrogen atom, --OM, a lower alkyl group, a lower alkoxy group or ##STR5## R 13 and R 14 may be the same or different groups and each represents hydrogen atom, a lower alkyl group, --COR 17 or --SO 2 R 17 ; R 15 and R 16 may be the same or different groups and each represents hydrogen atom or a lower alkyl group; R 17 represents a lower alkyl group; M represents hydrogen atom, an alkali metal or an atomic group required for forming a monovalent cation; and n represents 0 or an integer of 1 to 5.
Inventors
- 👤 Junji Miyata
- 👤 Satoshi Kanetake
- 👤 Yasufumi Morimoto
- 👤 Kenji Hanayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:08
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/485; G03C1/48515; Y; Y10; Y10S; Y10S430/00; Y10S430/141
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
254 words
An autopositive silver halide photographic material which comprises at least one silver halide emulsion layer wherein said emulsion layer or at least one other hydrophilic colloid layer contains at least one member selected from the group consisting of the compounds represented by the following general formulas (1), (2) and (3): ##STR17## wherein R 1 represents hydrogen atom or an alkyl group; and R 2 , R 3 and R 4 each represents hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; ##STR18## wherein R 5 represents hydrogen atom or an alkyl group; and R 6 and R 7 each represents hydrogen atom, an alkyl group, a halogen atom or an aryl group; ##STR19## wherein R 8 represents a lower alkylene group; X represents a halogen atom, nitro group, hydroxy group, a cyano group, a lower alkyl group, a lower alkoxy group, --COR 12 , ##STR20## or --SO 3 M; R 12 represents hydrogen atom, --OM, a lower alkyl group, a lower alkoxy group or ##STR21## R 13 and R 14 may be the same or different groups and each represents hydrogen atom, a lower alkyl group, --COR 17 or --SO 2 R 17 ; R 15 and R 16 may be the same or different groups and each represents hydrogen atom or a lower alkyl group; R 17 represents a lower alkyl group; M represents hydrogen atom, an alkali metal or an atomic group required for forming a monovalent cation; and n represents 0 or an integer of 1 to 5.
Claim 2
Dependent Claim
254 words
An autopositive silver halide photographic material which comprises at least one silver halide emulsion layer wherein said emulsion layer or at least one other hydrophilic colloid layer contains at least one member selected from the group consisting of the compounds represented by the following general formulas (1), (2) and (3): ##STR17## wherein R 1 represents hydrogen atom or an alkyl group; and R 2 , R 3 and R 4 each represents hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; ##STR18## wherein R 5 represents hydrogen atom or an alkyl group; and R 6 and R 7 each represents hydrogen atom, an alkyl group, a halogen atom or an aryl group; ##STR19## wherein R 8 represents a lower alkylene group; X represents a halogen atom, nitro group, hydroxy group, a cyano group, a lower alkyl group, a lower alkoxy group, --COR 12 , ##STR20## or --SO 3 M; R 12 represents hydrogen atom, --OM, a lower alkyl group, a lower alkoxy group or ##STR21## R 13 and R 14 may be the same or different groups and each represents hydrogen atom, a lower alkyl group, --COR 17 or --SO 2 R 17 ; R 15 and R 16 may be the same or different groups and each represents hydrogen atom or a lower alkyl group; R 17 represents a lower alkyl group; M represents hydrogen atom, an alkali metal or an atomic group required for forming a monovalent cation; and n represents 0 or an integer of 1 to 5.
Claim 3
Dependent Claim
156 words
An autopositive silver halide photographic material as in claim 1, wherein said silver halide emulsion has (1) a density of at least 2.0 when a sample is prepared by coating the emulsion in such an amount as to give a coating weight of 3.0 g/m 2 in terms of silver and the sample in an unexposed state is developed under the following conditions and (2) a density of not higher than 1.8 when the sample is exposed to tungsten light source (color temperature 2864K.) for (357) lux (100) seconds and then developed under the following conditions: (a) composition of developing solution: ______________________________________
Phenidone 0.8 g
Hydroquinone 25 g
Potassium bromide 3.3 g
Sodium carbonate 10.8 g
Potassium sulfite 67 g
5-Methylbenztriazole 0.2 g
Ethylenediaminetetraacetic acid
2.8 g
Sodium 2-mercaptobenzimidazole-
0.3 g
5-sulfonate
Add KOH and H.sub.2 O
to make 1 liter;
and pH 10.7
______________________________________ (b) development temperature, 38° C.; and (c) development time, 20 seconds.
Claim 4
Dependent Claim
36 words
An autopositive silver halide photographic material of claim 1, wherein the compounds represented by the general formula (1) or (2) are used in an amount of 5×10 -6 to 5×10 -3 mol per mol of silver.
Claim 5
Dependent Claim
35 words
An autopositive silver halide photographic material of claim 1, wherein the compounds represented by the general formula (3) are used in an amount of 2×10 -6 to 2×10 -1 mol per mol of silver halide.
Claim 6
Dependent Claim
16 words
An autopositive silver halide photographic material of claim 1, wherein said silver halide emulsion is monodisperse.
Claim 7
Dependent Claim
29 words
An autopositive silver halide photographic material of claim 1, wherein said emulsion layer or at least one other hydrophilic colloid layer contains a compound represented by general formula (1).
Claim 8
Dependent Claim
29 words
An autopositive silver halide photographic material of claim 1, wherein said emulsion layer or at least one other hydrophilic colloid layer contains a compound represented by general formula (2).
Claim 9
Dependent Claim
29 words
An autopositive silver halide photographic material of claim 1, wherein said emulsion layer or at least one other hydrophilic colloid layer contains a compound represented by general formula (3).
References Cited (Backward Citations)
US2870015A
Cited
US3526507A
Cited
US3501307A
Cited
US3650759A
Cited
US4059450A
Cited
US4997752A
Cited
US4923790A
Cited
US5059516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-09 | 1996-08-10 | 1997-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-09 | 2000-08-10 | 2001-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-09 | 2004-08-10 | 2005-02-09 | $7700.00 | Window Closed / Lapsed |