Patent US3862855A successfully refreshed from Google Patents.
US3862855A
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Photographic receiver elements containing a cobalt(III) ion complex
Assignee: Eastman Kodak Co
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Filing: 1972-12-04
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Granted: 1975-01-28
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Expires: 1992-12-04
Abstract
Abstract Photographic receiver elements are disclosed which comprise a support having thereon at least one layer containing an unhardened hydrophilic colloid and said elements contain cobalt(III) ion complexes. The receiver elements can be used in combination with a photographic element containing an imagewise distribution of a metal, such as developed silver, to effect imagewise tanning in the receiver element.
Inventors
- 👤 Hugh Gerald Mcguckin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/735; G03C5/00; G03C5/26; G03C5/29; G03C5/315; G03F; G03F7/00; G03F7/004; G03F7/06; Y; Y10; Y10S; Y10S430/00; Y10S430/137; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31768; Y10T428/31772; Y10T428/31775
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
30 words
A receiver element according to claim 1 wherein said cobalt(III) complex is present in a concentration of at least 1.0 percent by weight of said hydrophilic colloid based on cobalt.
Claim 2
Dependent Claim
24 words
A receiver element according to claim 1 wherein said unhardened hydrophilic colloid consists essentially of gelatin at a concentration of at least 20 mg./ft.2.
Claim 3
Dependent Claim
18 words
A receiver element according to claim 1 which contains a nonmetallic opacifying material dispersed in said hydrophilic colloid.
Claim 4
Dependent Claim
15 words
A receiver element according to claim 1 which contains an incorporated silver halide developing agent.
Claim 5
Dependent Claim
13 words
A receiver element according to claim 1 which contains a photographic color coupler.
Claim 6
Dependent Claim
18 words
A receiver element according to claim 1 wherein said cobalt(III) ion complex has a net charge of +3.
Claim 7
Dependent Claim
18 words
A receiver element according to claim 1 wherein said cobalt(III) ion complex contains at least 3 ammine ligands.
Claim 8
Dependent Claim
17 words
A receiver element according to claim 1 wherein said receiver element is coated on a hydrophobic support.
Claim 9
Dependent Claim
24 words
A receiver element according to claim 1 which contains a carbon opacifying agent in a concentration to provide a density of at least 0.5.
Claim 10
Dependent Claim
78 words
A photographic receIver element comprising a support having coated thereon at least 5 mg./ft.2 of an unhardened hydrophilic colloid which consists essentially of an unhardened gelatin having a melting point of less than 150* F. and wherein said element contains a cobalt(III) ion complex in a concentration of at least 1.0 percent by weight of said gelatin based on cobalt, wherein said cobalt(III) ion complex has a coordination number of 6 and contains at least 3 ammine ligands.
Claim 11
Dependent Claim
15 words
A photographic receiver element according to claim 11 which is substantially free of silver halide.
Claim 12
Dependent Claim
25 words
A photographic receiver element according to claim 11 which comprises an opacifying material in a quantity sufficient to provide a density of at least 0.5.
Claim 13
Dependent Claim
16 words
A photographic receiver element according to claim 11 which contains carbon black dispersed in said gelatin.
Claim 14
Dependent Claim
19 words
A photographic receiver element according to claim 11 wherein said cobalt(III) ion complex is a cobaltic hexammine ion complex.
Claim 15
Dependent Claim
26 words
A photographic receiver element according to claim 11 wherein said hydrophilic colloid is an unhardened gelatin at a concentration of 20 mg./ft.2 to about 2,000 mg./ft.2.
Claim 16
Dependent Claim
97 words
A photographic receiver element comprising a support having thereon at least one layer containing an unhardened hydrophilic colloid and at least one other layer containing an unhardened hydrophilic colloid and an opacifying material, and wherein said element contains at least 0.5 mg./ft.2 of a cobalt (III) ion complex and wherein said element contains at least 5 mg./ft.2 of unhardened hydrophilic colloid and said hydrophilic colloid has a melting point of less than 150* F. and is capable of being hardened with formaldehyde to provide at least a 20* F. melting point differential between hardened and unhardened areas.
Claim 17
Dependent Claim
35 words
A photographic element according to claim 17 wherein said support has coated thereon, in sequence, 1) said layer containing unhardened hydrophilic colloid and 2) said layer containing said unhardened hydrophilic colloid and said opacifying material.
Claim 18
Dependent Claim
15 words
A photographic receiver element according to claim 7 wherein said opacifying material is carbon black.
Claim 19
Dependent Claim
91 words
A photographic receiver element comprising a support having thereon at least one layer containing an unhardened hydrophilic colloid and at least 0.5 mg./ft.2 of a cobalt(III) ion complex and at least one other layer containing an unhardened hydrophilic colloid and an opacifying material, wherein said element contains at least 20 mg./ft.2 of unhardened hydrophilic colloid and said hydrophilic colloid has a melting point of less than 150* F. and is capable of being hardened with formaldehyde to provide at least a 20* F. melting point differential between hardened and unhardened areas.
Claim 20
Dependent Claim
18 words
A photographic receiver element according to claim 20 wherein said unhardened hydrophilic colloid consists essentially of unhardened gelatin.
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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |