US4471050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide emulsions and photographic elements containing composite grains
Assignee: Eastman Kodak Co
•
Filing: 1983-03-30
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Granted: 1984-09-11
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Expires: 2003-03-30
Abstract
Abstract Radiation-sensitive emulsions and photographic elements incorporating these emulsions are disclosed. In the emulsions silver halide host grains of a face centered cubic rock salt type crystal structure are present. Nonisomorphic silver salt of a really limited epitaxial compatibility is located on and substantially confined to selected sites of the host grains.
Inventors
- 👤 Joe E. Maskasky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:35
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/0051; G03C1/06; G03C1/07; G03C1/08; G03C1/10; G03C1/12; G03C1/14; G03C1/18; G03C2001/0055; G03C1/035; G03C2001/03517; G03C2001/03552; G03C2001/03558; G03C2001/03594
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
49 words
A radiation-sensitive emulsion comprised of a dispersing medium, silver halide host grains of a face centered cubic rock salt type crystal structure, and nonisomorphic silver salt of areally limited epitaxial compatibility located on and substantially confined to at least one of edge and corner sites of said host grains.
Claim 2
Dependent Claim
49 words
A radiation-sensitive emulsion comprised of a dispersing medium, silver halide host grains of a face centered cubic rock salt type crystal structure, and nonisomorphic silver salt of areally limited epitaxial compatibility located on and substantially confined to at least one of edge and corner sites of said host grains.
Claim 3
Dependent Claim
17 words
A radiation-sensitive emulsion according to claim 1 wherein said host grains are bounded by {100} crystal faces.
Claim 4
Dependent Claim
17 words
A radiation-sensitive emulsion according to claim 1 wherein said host grains are bounded by {111} crystal faces.
Claim 5
Dependent Claim
15 words
A radiation-sensitive emulsion according to claim 1 wherein said host grains are comprised of chloride.
Claim 6
Dependent Claim
15 words
A radiation-sensitive emulsion according to claim 1 wherein said host grains are comprised of bromide.
Claim 7
Dependent Claim
30 words
A radiation-sensitive emulsion according to claim 5 wherein said host grains are additionally comprised of up to 40 mole percent iodide, based on total halide present in said host grains.
Claim 8
Dependent Claim
29 words
A radiation-sensitive emulsion according to claim 6 wherein said host grains are comprised of up to 15 mole percent iodide, based on total halide present in said host grains.
Claim 9
Dependent Claim
17 words
A radiation-sensitive emulsion according to claim 1 wherein said nonisomorphic silver salt exhibits an orthorhombic crystal structure.
Claim 10
Dependent Claim
17 words
A radiation-sensitive emulsion according to claim 1 wherein said nonisomorphic silver salt exhibits a monoclinic crystal structure.
Claim 11
Dependent Claim
19 words
A radiation-sensitive emulsion according to claim 1 wherein said nonisomorphic silver salt exhibits a hexagonal wurtzite type crystal structure.
Claim 12
Dependent Claim
21 words
A radiation-sensitive emulsion according to claim 1 wherein said nonisomorphic silver salt exhibits a body centered cubic zinc blende type structure.
Claim 13
Dependent Claim
30 words
A radiation-sensitive emulsion according to claim 1 wherein said nonisomorphic silver salt is epitaxially located on less than 50 percent of the surface area of said silver halide host grains.
Claim 14
Dependent Claim
30 words
A radiation-sensitive emulsion according to claim 12 wherein said nonisomorphic silver salt is epitaxially located on less than 25 percent of the surface area of said silver halide host grains.
Claim 15
Dependent Claim
31 words
A radiation-sensitive emulsion according to claim 13 wherein said nonisomorphic silver salt is epitaxially located on less than 10 mole percent of the surface area of said silver halide host grains.
Claim 16
Dependent Claim
17 words
A radiation-sensitive emulsion according to claim 1 wherein said nonisomorphic silver salt consists essentially of silver iodide.
Claim 17
Dependent Claim
17 words
A radiation-sensitive emulsion according to claim 1 wherein said nonisomorphic silver salt consists essentially of silver thiocyanate.
Claim 18
Dependent Claim
17 words
A radiation-sensitive emulsion according to claim 1 wherein said nonisomorphic silver salt consists essentially of silver cyanide.
Claim 19
Dependent Claim
18 words
A radiation-sensitive emulsion according to claim 1 wherein isomorphic silver halide is additionally located on said host grains.
Claim 20
Dependent Claim
18 words
A radiation-sensitive emulsion according to claim 18 wherein said additional isomorphic silver halide substantially shells said host grains.
Claim 21
Dependent Claim
65 words
A radiation-sensitive emulsion comprised of a dispersing medium, silver halide host grains of a face centered cubic rock salt type crystal structure comprised of bromide and exhibiting {111} crystal faces, and nonisomorphic silver salt of areally limited epitaxial compatibility located on and substantially confined to at least one of edge and corner sites of said host grains, said silver salt being comprised of silver thiocyanate.
Claim 22
Dependent Claim
65 words
A radiation-sensitive emulsion comprised of a dispersing medium, silver halide host grains of a face centered cubic rock salt type crystal structure comprised of bromide and exhibiting {111} crystal faces, and nonisomorphic silver salt of areally limited epitaxial compatibility located on and substantially confined to at least one of edge and corner sites of said host grains, said silver salt being comprised of silver thiocyanate.
Claim 23
Dependent Claim
36 words
A radiation-sensitive emulsion according to claim 20 wherein said silver halide host grains are octahedral silver bromide grains and said nonisomorphic silver salt consists essentially of silver thiocyanate located along the edges of said host grains.
Claim 24
Dependent Claim
65 words
A radiation-sensitive emulsion comprised of a dispersing medium, silver halide host grains of a face centered cubic rock salt type crystal structure comprised of chloride and presenting {100} crystal faces, and nonisomorphic silver salt of areally limited epitaxial compatibility located on and substantially confined to at least one of edge and corner sites of said host grains, said nonisomorphic silver salt being comprised of thiocyanate.
Claim 25
Dependent Claim
65 words
A radiation-sensitive emulsion comprised of a dispersing medium, silver halide host grains of a face centered cubic rock salt type crystal structure comprised of chloride and presenting {100} crystal faces, and nonisomorphic silver salt of areally limited epitaxial compatibility located on and substantially confined to at least one of edge and corner sites of said host grains, said nonisomorphic silver salt being comprised of thiocyanate.
Claim 26
Dependent Claim
31 words
A radiation-sensitive emulsion according to claim 22 wherein said host grains are cubic and said nonisomorphic silver salt consists essentially of silver thiocyanate located along the edges of said host grains.
Claim 27
Dependent Claim
21 words
A radiation-sensitive emulsion according to claim 23 wherein said silver thiocyanate and said host grains are shelled with additional silver halide.
Claim 28
Dependent Claim
57 words
A radiation-sensitive emulsion comprised of a dispersing medium, silver halide host grains of a face centered cubic rock salt type crystal structure comprised of chloride and bounded by {100} crystal faces, and nonisomorphic silver salt consisting essentially of silver cyanide located on and substantially confined to sites parallel to the edges of said silver halide host grains.
Claim 29
Dependent Claim
57 words
A radiation-sensitive emulsion comprised of a dispersing medium, silver halide host grains of a face centered cubic rock salt type crystal structure comprised of chloride and bounded by {100} crystal faces, and nonisomorphic silver salt consisting essentially of silver cyanide located on and substantially confined to sites parallel to the edges of said silver halide host grains.
Claim 30
Dependent Claim
29 words
A radiation-sensitive emulsion according to claim 25 wherein an additional nonisomorphic silver salt consisting essentially of silver thiocyanate is additionally epitaxially located at selected sites on said host grains.
Claim 31
Dependent Claim
26 words
A photographic element comprised of a support and, located on said support, at least one radiation-sensitive emulsion according to any one of claims 1 through 26.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |