Patent US4643966A successfully refreshed from Google Patents.
US4643966A
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US
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Emulsions and photographic elements containing ruffled silver halide grains
Assignee: Eastman Kodak Co
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Filing: 1985-09-03
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Granted: 1987-02-17
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Expires: 2005-09-03
Abstract
Abstract Silver halide photographic emulsions comprised of radiation sensitive silver grains of a cubic crystal lattice structure having ruffled faces and photographic elements including these emulsions are disclosed.
Inventors
- 👤 Joe E. Maskasky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:38
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/035; G03C1/0051
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
70 words
A radiation sensitive emulsion comprised of silver halide grains of a cubic crystal lattice structure having faces ruffled by protrusions which are silver halide crystal lattice extensions from a base plane of a first crystallographic form, silver halide adjacent said base plane, beneath said base plane and in said protrusions, favoring the formation of surfaces of the first crystallographic form, and said protrusions presenting surfaces of a second crystallographic form.
Claim 2
Dependent Claim
70 words
A radiation sensitive emulsion comprised of silver halide grains of a cubic crystal lattice structure having faces ruffled by protrusions which are silver halide crystal lattice extensions from a base plane of a first crystallographic form, silver halide adjacent said base plane, beneath said base plane and in said protrusions, favoring the formation of surfaces of the first crystallographic form, and said protrusions presenting surfaces of a second crystallographic form.
Claim 3
Dependent Claim
33 words
A radiation sensitive emulsion according to claim 1 wherein said ruffles present a total surface area at least 50 percent greater than that presented by the base planes on which they are located.
Claim 4
Dependent Claim
19 words
A radiation sensitive emulsion according to claim 1 in which said first crystallographic form is a cubic crystallographic form.
Claim 5
Dependent Claim
19 words
A radiation sensitive emulsion according to claim 1 in which said first crystallographic form is an octahedral crystallographic form.
Claim 6
Dependent Claim
37 words
A radiation sensitive emulsion according to claim 1 in which silver halide adjacent said base plane, beneath said base plane and in said protrusions, consists essentially of silver bromide optionally additionally containing a minor proportion of iodide.
Claim 7
Dependent Claim
64 words
A radiation sensitive emulsion according to claim 1 in which tabular silver halide grains having at least one ruffled major crystal face and a thickness of less than 0.2 μm have an average aspect ratio of greater than 5:1 and account for at least 50 percent of the total projected area of all silver halide grains having at least one ruffled major crystal face.
Claim 8
Dependent Claim
71 words
A radiation sensitive emulsion according to claim 1 in which tabular silver halide grains having at least one ruffled major crystal face, a thickness of less than 0.5 μm, and a diameter of at least 0.6 μm have an average aspect ratio of greater than 8:1 and account for at least 50 percent of the total projected area of all silver halide grains having at least one ruffled major crystal face.
Claim 9
Dependent Claim
23 words
A radiation sensitive emulsion according to claim 1 in which said protrusions include those which are in the form of ridges or pyramids.
Claim 10
Dependent Claim
24 words
A radiation sensitive emulsion according to claim 1 in which a growth modifier is adsorbed to said ruffled faces of said silver halide grains.
Claim 11
Dependent Claim
42 words
A radiation sensitive emulsion according to claim 9 in which said growth modifier is chosen from the class consisting of 5-carbethoxy-4-hydroxy-1,3,3a,7-tetraazaindene; 3-carboxymethyl-5-(2-pyrrolino-1-cyclopenten-1-ylmethylene)rhodanine; anhydro-5-chloro-9-ethyl-5'-phenyl-3,3'-di-(3-sulfopropyl)oxacarbocyanine hydroxide, triethylamine salt; anhydro-9-ethyl-5,5'-diphenyl-3,3'-di-(3-sulfobutyl)oxacarbocyanine hydroxide, monosodium salt; 5-(3-ethyl-2-benzothiazolinylidene)-3-β-sulfoethylrhodanine; 4-hydroxy-6-methyl-1,2,3a,7-tetraazaindene; 4-hydroxy-6-methyl-2-methylthio-1,3,3a,7-tetraazaindene; 5-imino-3-thiourazole; 4-hydroxy-6-methyl-1,3,3a,7-tetraazaindene; 3-carboxymethyl-5-{[3-(3-sulfopropyl)-2-thiazolidinylidene]ethylidene}rhodanine, sodium salt; 2-mercaptoimidazole; and anhydro-3,9-diethyl-5,5',6'-trimethoxy-3'-(3-sulfopropyl)thiacarbocyanine hydroxide.
Claim 12
Dependent Claim
92 words
A radiation sensitive emulsion comprised of silver halide grains of a cubic crystal lattice structure having ruffled faces characterized in that said faces are ruffled by pyramidal protrusions which are silver halide crystal lattice extensions from a base plane of a first crystallographic form, silver halide adjacent said base plane, beneath said base plane and in said protrusions, favoring the formation of surfaces of the first crystallographic form and consisting essentially of silver bromide optionally containing a minor proportion of iodide, and said pyramidal protrusions presenting surfaces of a second crystallographic form.
Claim 13
Dependent Claim
92 words
A radiation sensitive emulsion comprised of silver halide grains of a cubic crystal lattice structure having ruffled faces characterized in that said faces are ruffled by pyramidal protrusions which are silver halide crystal lattice extensions from a base plane of a first crystallographic form, silver halide adjacent said base plane, beneath said base plane and in said protrusions, favoring the formation of surfaces of the first crystallographic form and consisting essentially of silver bromide optionally containing a minor proportion of iodide, and said pyramidal protrusions presenting surfaces of a second crystallographic form.
Claim 14
Dependent Claim
28 words
A radiation sensitive emulsion according to claim 11 in which said pyramidal protrusions exhibit a surface area which is at least 100 percent greater than their base area.
Claim 15
Dependent Claim
19 words
A radiation sensitive emulsion according to claim 11 in which said base plane is of a {111} crystallographic form.
Claim 16
Dependent Claim
64 words
A radiation sensitive emulsion according to claim 11 in which tabular silver halide grains having at least one ruffled major crystal face and a thickness of less than 0.2 μm have an average aspect ratio of greater than 5:1 and account for at least 50 percent of the total projected area of all silver halide grains having at least one ruffled major crystal face.
Claim 17
Dependent Claim
71 words
A radiation sensitive emulsion according to claim 14 in which tabular silver halide grains having at least one ruffled major crystal face, a thickness of less than 0.2 μm, and a diameter of at least 0.6 μm have an average aspect ratio of greater than 8:1 and account for at least 50 percent of the total projected area of all silver halide grains having at least one ruffled major crystal face.
Claim 18
Dependent Claim
66 words
A radiation sensitive emulsion according to claim 11 in which at least a portion of said protrusions have pyramidal crystal faces of the {hhl}, {hkO}, {hll}, or {hkl} crystallographic form, where h, k, and l are independently in each occurrence unlike integers greater than zero, h is 5 or less and greater than l and k, when present, is less than h and greater than l.
Claim 19
Dependent Claim
25 words
A radiation sensitive emulsion according to claim 16 in which at least a portion of said protrusions have pyramidal crystal faces of the icositetrahedral form.
Claim 20
Dependent Claim
32 words
A radiation sensitive emulsion according to claim 17 in which a growth modifier is adsorbed to said icositetrahedral pyramidal crystal faces chosen from the group consisting of 3-carboxymethyl-5-(2-pyrrolino-1-cyclopenten-1-ylmethylene)rhodanine; 5-(3-ethyl-2-benzothiazolinylidene)-3-β-sulfoethylrhodanine; 4-hydroxy-6-methyl-2-methylthio-1,3,3a,7-tetraazaindene; and 2-mercaptoimidazole.
Claim 21
Dependent Claim
25 words
A radiation sensitive emulsion according to claim 16 in which at least a portion of said protrusions have pyramidal crystal faces of the trisoctahedral form.
Claim 22
Dependent Claim
22 words
A radiation sensitive emulsion according to claim 19 in which a 4-hydroxy-6-methyl-1,3,3a,7-tetraazaindene growth modifier is adsorbed to said trisoctahedral pyramidal crystal faces.
Claim 23
Dependent Claim
26 words
A radiation sensitive emulsion according to claim 16 in which at least a portion of said protrusions have pyramidal crystal faces of the rhombic dodecahedral form.
Claim 24
Dependent Claim
31 words
A radiation sensitive emulsion according to claim 21 in which a growth modifier is adsorbed to said rhombic dodecahedral pyramidal crystal faces chosen from the group consisting of 4-hydroxy-6-methyl-1,2,3a,7-tetraazaindene and 5-imino-3-thiourazole.
Claim 25
Dependent Claim
25 words
A radiation sensitive emulsion according to claim 16 in which at least a portion of said protrusions have pyramidal crystal faces of the cubic form.
Claim 26
Dependent Claim
36 words
A radiation sensitive emulsion according to claim 23 in which a growth modifier is adsorbed to said cubic pyramidal crystal faces chosen from the group consisting of anhydro-5-chloro-9-ethyl-5'-phenyl-3,3'-di-(3-sulfopropyl)oxacarbocyanine hydroxide, triethylamine salt and anhydro-9-ethyl-5,5'-diphenyl-3,3'-di(3-sulfobutyl)oxacarbocyanine hydroxide, monosodium salt.
Claim 27
Dependent Claim
10 words
A photographic element containing an emulsion according to claim 1.
Claim 28
Dependent Claim
10 words
A photographic element containing an emulsion according to claim 11.
References Cited (Backward Citations)
US1696830A
Cited
US3206313A
Cited
US3367778A
Cited
US3317322A
Cited
US3519426A
Cited
US3761276A
Cited
US3817756A
Cited
US3804629A
Cited
US3885970A
Cited
US4183756A
Cited
US4225666A
Cited
JPS5854333A
Cited
US4386156A
Cited
US4435501A
Cited
US4400463A
Cited
US4414310A
Cited
US4414304A
Cited
US4414306A
Cited
US4425425A
Cited
US4439520A
Cited
US4433048A
Cited
US4434226A
Cited
US4399215A
Cited
US4425426A
Cited
US4478929A
Cited
US4504570A
Cited
US4425426B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |