US3854952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive silver halide composition
Assignee: AT&T Inc
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Filing: 1973-09-19
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Granted: 1974-12-17
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Expires: 1993-09-19
Abstract
Abstract A photosensitive silver halide composition is disclosed. The composition comprises a silver halide deposited or sorbed on colloidal particles of a hydrous oxide of an element selected from the group consisting of Be, Mg, Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Al, In, Si, Ge, Sn, Th and mixtures thereof.
Inventors
- 👤 J Kenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:11
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/705; G03C1/494; G03C1/496; Y; Y10; Y10S; Y10S430/00; Y10S430/133
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
53 words
A PHOTOSENSITIVE SILVER HALIDE COMPOSITION COMPRISING A SILVER HALIDE DEPOSITED ON COLLOIDAL PARTICLES OF A HYDROUS OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF BE, MG, TI, ZR, V, CR, MO, W, MN, FE, CO, NI, CU, ZN, CD, HG, AL, IN, TL, SI, GE, SN, BI, TH, AND MIXTURES THEREOF.
Claim 2
Dependent Claim
53 words
A PHOTOSENSITIVE SILVER HALIDE COMPOSITION COMPRISING A SILVER HALIDE DEPOSITED ON COLLOIDAL PARTICLES OF A HYDROUS OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF BE, MG, TI, ZR, V, CR, MO, W, MN, FE, CO, NI, CU, ZN, CD, HG, AL, IN, TL, SI, GE, SN, BI, TH, AND MIXTURES THEREOF.
Claim 3
Dependent Claim
14 words
The composition as defined in claim 1 wherein said silver halide comprises silver chloride.
Claim 4
Dependent Claim
116 words
A photosensitive silver halide composition comprising silver halide precipitated in the presence of a stable aqueous colloidal wetting solution, formed by a hydrolysis and nucleation reaction, comprising insoluble hydrous oxide particles of an element selected from the group consisting of Be, Mg, Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Al, In, Tl, Si, Ge, Sn, Bi, Th, and mixtures thereof, said particles having a size within the range of 10A to 10,000A and said hydrolysis reaction including at least (1) dissolution of a salt of said selected element in an aqueous medium and (2) maintenance of the pH of said aqueous medium at a point where no flocculate rEsults.
Claim 5
Dependent Claim
116 words
A photosensitive silver halide composition comprising silver halide precipitated in the presence of a stable aqueous colloidal wetting solution, formed by a hydrolysis and nucleation reaction, comprising insoluble hydrous oxide particles of an element selected from the group consisting of Be, Mg, Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Al, In, Tl, Si, Ge, Sn, Bi, Th, and mixtures thereof, said particles having a size within the range of 10A to 10,000A and said hydrolysis reaction including at least (1) dissolution of a salt of said selected element in an aqueous medium and (2) maintenance of the pH of said aqueous medium at a point where no flocculate rEsults.
Claim 6
Dependent Claim
14 words
The composition as defined in claim 3 wherein said silver halide comprises silver chloride.
Claim 7
Independent Claim
127 words
A method of forming a wetting photosensitive silver halide composition which comprises combining a suitable silver salt with a stable aqueous colloidal wetting solution, formed by a hydrolysis and nucleation reaction, comprising (a) a halide ion and (b) insoluble hydrous oxide particles of an element selected from the group consisting of Be, Mg, Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Al, In, Tl, Si, Ge, Sn, Bi, Th, and mixtures thereof, said particles having a size within the range of 10A to 10,000A and said hydrolysis reaction including at least (1) dissolution of a salt of said selected element in an aqueous medium and (2) maintenance of the pH of said aqueous medium at a point where no flocculate results.
Claim 8
Independent Claim
127 words
A method of forming a wetting photosensitive silver halide composition which comprises combining a suitable silver salt with a stable aqueous colloidal wetting solution, formed by a hydrolysis and nucleation reaction, comprising (a) a halide ion and (b) insoluble hydrous oxide particles of an element selected from the group consisting of Be, Mg, Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Al, In, Tl, Si, Ge, Sn, Bi, Th, and mixtures thereof, said particles having a size within the range of 10A to 10,000A and said hydrolysis reaction including at least (1) dissolution of a salt of said selected element in an aqueous medium and (2) maintenance of the pH of said aqueous medium at a point where no flocculate results.
Claim 9
Dependent Claim
22 words
The method as defined in claim 5 wherein said suitable silver salt comprises AgNO3 and said halide ion comprises a chloride ion.
Claim 10
Independent Claim
107 words
A method of rendering a surface photosensitive which comprises: a. combining a water-soluble silver species with a stable aqueous colloidal wetting solution, formed by a hydrolysis and nucleation reaction, comprising a halide species and insoluble hydrous oxide particles of an element selected from the group consisting of Be, Mg, Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Al, In, Tl, Si, Ge, Sn, Bi, Th, and mixtures thereof, to precipitate a silver halide and to coat said hydrous oxide particles with said precipitated silver halide; and b. contacting the surface with said coated particles to deposit a photosensitive film thereof thereon.
Claim 11
Independent Claim
107 words
A method of rendering a surface photosensitive which comprises: a. combining a water-soluble silver species with a stable aqueous colloidal wetting solution, formed by a hydrolysis and nucleation reaction, comprising a halide species and insoluble hydrous oxide particles of an element selected from the group consisting of Be, Mg, Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Al, In, Tl, Si, Ge, Sn, Bi, Th, and mixtures thereof, to precipitate a silver halide and to coat said hydrous oxide particles with said precipitated silver halide; and b. contacting the surface with said coated particles to deposit a photosensitive film thereof thereon.
Claim 12
Dependent Claim
20 words
The method as defined in claim 7 wherein said silver species comprises AgNO3 and said halide species comprises chloride ions.
Claim 13
Dependent Claim
82 words
In the method of making a photographic image comprising exposing to a light image a photosensitive film comprising silver halide to form a latent image therein, the improvement wherein the photosensitive film which comprises a silver halide deposited on insoluble collidal particles of a hydrous oxide of an element selected from the group consisting of Be, Mg, Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Al, In, Tl, Si, Ge, Sn, Bi, Th, and mixtures thereof.
Claim 14
Dependent Claim
82 words
In the method of making a photographic image comprising exposing to a light image a photosensitive film comprising silver halide to form a latent image therein, the improvement wherein the photosensitive film which comprises a silver halide deposited on insoluble collidal particles of a hydrous oxide of an element selected from the group consisting of Be, Mg, Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Al, In, Tl, Si, Ge, Sn, Bi, Th, and mixtures thereof.
Claim 15
Dependent Claim
14 words
The method as defined in claim 9 wherein said silver halide comprises silver chloride.
Claim 16
Dependent Claim
24 words
The method as defined in claim 9 which further comprises treating the exposed composition with a suitable developer to develop a visible image therein.
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |