US4499179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic light-sensitive material
Assignee: Konica Minolta Inc
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Filing: 1983-02-22
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Granted: 1985-02-12
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Expires: 2003-02-22
Abstract
Abstract A silver halide photographic light-sensitive element having on a support, at least one silver halide light-sensitive emulsion layer which has thereon a protective layer composed of a binder containing a non-light-sensitive hydrophilic colloid. The protective layer is made up of an outer layer and an inner layer. The outer layer contains oil particles in the form of water-insoluble liquid droplets finely dispersed in the binder and the inner layer contains fine solid particles wherein the ratio of the thickness of the inner layer to the outer layer is at least 1.5.
Inventors
- 👤 Hideo Ota
- 👤 Kiyotoshi Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:54
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614; Y; Y10; Y10S; Y10S430/00; Y10S430/151; Y10S430/162
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
166 words
A silver halide photographic light-sensitive element having on a support thereof, at least one silver halide light-sensitive emulsion layer, said at least one emulsion layer having thereon a protective layer composed of a binder containing a non-light-sensitive hydrophilic colloid, said protective layer comprising an outer layer and an inner layer between said outer layer and said at least one emulsion layer, said outer layer consisting essentially of oil particles in the form of water-insoluble liquid droplets finely dispersed in said binder at a volume of 0.1 to 0.4 based on the volume of the binder, said inner layer consisting essentially of fine solid particles selected from the group consisting of a copolymer of an ester of acrylic acid or of methacrylic acid, cellulose acetate propionate, polystyrene, silver halide, strontium sulfate, barium sulfate, calcium carbonate, SiO 2 , ZnO, TiO 2 , Al 2 O 3 , MgO, and BaO wherein the ratio of the thickness of the inner layer to the outer layer at least 1.5.
Claim 2
Dependent Claim
166 words
A silver halide photographic light-sensitive element having on a support thereof, at least one silver halide light-sensitive emulsion layer, said at least one emulsion layer having thereon a protective layer composed of a binder containing a non-light-sensitive hydrophilic colloid, said protective layer comprising an outer layer and an inner layer between said outer layer and said at least one emulsion layer, said outer layer consisting essentially of oil particles in the form of water-insoluble liquid droplets finely dispersed in said binder at a volume of 0.1 to 0.4 based on the volume of the binder, said inner layer consisting essentially of fine solid particles selected from the group consisting of a copolymer of an ester of acrylic acid or of methacrylic acid, cellulose acetate propionate, polystyrene, silver halide, strontium sulfate, barium sulfate, calcium carbonate, SiO 2 , ZnO, TiO 2 , Al 2 O 3 , MgO, and BaO wherein the ratio of the thickness of the inner layer to the outer layer at least 1.5.
Claim 3
Dependent Claim
23 words
The light-sensitive element of claim 1, wherein the oil particles are selected from the group consisting of esters, amides, ethers, alcohols and paraffins.
Claim 4
Dependent Claim
52 words
The light-sensitive element of claim 2, wherein the oil particles are in the form of a solid at room temperature and in the form of a liquid when dispersed in said binder, said oil particles being selected from the group consisting of stilbene, triazine, oxazole, coumarin, benzotriazole, triazolin, and cinnamic acid ester.
Claim 5
Dependent Claim
17 words
The light-sensitive element of claim 1, wherein said fine solid particles are composed of SiO 2 .
Claim 6
Dependent Claim
19 words
The light-sensitive element of claim 1, wherein the oil particles have an average particle diameter of 0.1μ to 2μ.
Claim 7
Dependent Claim
19 words
The light-sensitive element of claim 5, wherein the oil particles have an average particle diameter of 0.1μ to 1μ.
Claim 8
Dependent Claim
19 words
The light-sensitive element of claim 1, wherein the solid particles have an average particle diameter of 0.005μ to 5μ.
Claim 9
Dependent Claim
19 words
The light-sensitive element of claim 7, wherein the solid particles have an average particle diameter of 0.02μ to 3μ.
Claim 10
Dependent Claim
25 words
The light-sensitive element of claim 1, wherein the ratio of the thickness of the inner layer to the outer layer is from 1.5 to 4.
Claim 11
Dependent Claim
25 words
The light-sensitive element of claim 9, wherein the ratio of the thickness of the inner layer to the outer layer is from 1.5 to 3.
Claim 12
Dependent Claim
19 words
The light-sensitive element of claim 5, wherein the solid particles have an average particle diameter of 0.005μ to 5μ.
Claim 13
Dependent Claim
25 words
The light-sensitive element of claim 11, wherein the ratio of the thickness of the inner layer to the outer layer is from 1.5 to 4.
Claim 14
Dependent Claim
23 words
The light-sensitive element of claim 12, wherein the oil particles are selected from the group consisting of esters, amides, ethers, alcohols and paraffins.
Claim 15
Dependent Claim
52 words
The light-sensitive element of claim 12, wherein the oil particles are in the form of a solid at room temperature and in the form of a liquid when dispersed in said binder, said oil particles being selected from the group consisting of stilbene, triazine, oxazole, coumarin, benzotriazole, triazolin, and cinnamic acid ester.
Claim 16
Dependent Claim
17 words
The light-sensitive element of claim 13, wherein said fine solid particles are composed of SiO 2 .
Claim 17
Dependent Claim
17 words
The light-sensitive element of claim 14, wherein said fine solid particles are composed of SiO 2 .
Claim 18
Dependent Claim
28 words
The light-sensitive element of claim 1, wherein the amount of said solid particles is 3 to 50% by weight based on the weight of said non-light-sensitive hydrophilic colloid.
Claim 19
Dependent Claim
28 words
The light-sensitive element of claim 12, wherein the amount of said solid particles is 3 to 50% by weight based on the weight of said non-light-sensitive hydrophilic colloid.
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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) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |