US4172731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element containing a light absorbing matting agent
Assignee: Eastman Kodak Co
•
Filing: 1978-04-03
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Granted: 1979-10-30
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Expires: 1998-04-03
Abstract
Abstract Photographic elements containing a light absorbing matting agent overcome the "starry night" effect.
Inventors
- 👤 Frederick R. Heigold
- 👤 Wesley F. Hoskyns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:33
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/95
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
65 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises pigmented polymeric particles which are of the same color as the image to be formed in the adjacent emulsion layer.
Claim 2
Dependent Claim
65 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises pigmented polymeric particles which are of the same color as the image to be formed in the adjacent emulsion layer.
Claim 3
Dependent Claim
22 words
A photographic element of claim 1 wherein the weight ratio of transparent polymeric vehicle to matting agent is between 4:1 to 50:1.
Claim 4
Dependent Claim
48 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises black polymeric particles.
Claim 5
Dependent Claim
48 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises black polymeric particles.
Claim 6
Dependent Claim
21 words
A photographic element of claim 3 wherein the layer containing the matting agent is the outermost layer of the photographic element.
Claim 7
Dependent Claim
19 words
A photographic element of claim 4 wherein the transparent polymeric vehicle is gelatin, a gelatin derivative or combinations thereof.
Claim 8
Dependent Claim
20 words
A photographic element of claim 4 wherein the black polymeric particles are spherical polymeric beads having carbon black dispersed therein.
Claim 9
Dependent Claim
34 words
A photographic element of claim 5 wherein the black polymeric particles are spherical beads of a polymeric ester of acrylic or methacrylic acid or a polyvinyl resin, the beads having carbon black dispersed therein.
Claim 10
Dependent Claim
15 words
A photographic element of claim 6 wherein the polymeric beads are comprised of poly(methyl methacrylate).
Claim 11
Dependent Claim
19 words
A photographic element of claim 6 wherein the polymeric beads have a mean diameter of 2.5 to 10 microns.
Claim 12
Dependent Claim
19 words
A photographic element of claim 8 wherein the polymeric beads have a mean diameter of 4 to 6 microns.
Claim 13
Dependent Claim
19 words
A photographic element of claim 6 wherein the polymeric beads comprise 2 to 15 percent by weight carbon black.
Claim 14
Dependent Claim
19 words
A photographic element of claim 8 wherein the polymeric beads comprise 4 to 8 percent by weight carbon black.
Claim 15
Dependent Claim
19 words
A photographic element of claim 6 wherein the weight ratio of vehicle to beads is from 4:1 to 50:1.
Claim 16
Dependent Claim
19 words
A photographic element of claim 8 wherein the weight ratio of vehicle to beads is from 6:1 to 10:1.
Claim 17
Dependent Claim
18 words
A photographic element of claim 5 wherein the outermost layer has dry thickness of 0.05 to 0.15 micron.
Claim 18
Dependent Claim
81 words
In a photographic element comprising a support bearing a layer of a silver halide emulsion and, adjacent said emulsion layer, an overcoat matte layer comprising gelatin and a matting agent, the improvement wherein the matting agent comprises spherical beads of poly(methyl methacrylate) in which is dispersed from 2 to 15 percent carbon black, the beads having a mean diameter of 2.5 to 10 microns and the weight ratio of bead to gelatin in the overcoat layer being from 1:6 to 1:10.
Claim 19
Dependent Claim
81 words
In a photographic element comprising a support bearing a layer of a silver halide emulsion and, adjacent said emulsion layer, an overcoat matte layer comprising gelatin and a matting agent, the improvement wherein the matting agent comprises spherical beads of poly(methyl methacrylate) in which is dispersed from 2 to 15 percent carbon black, the beads having a mean diameter of 2.5 to 10 microns and the weight ratio of bead to gelatin in the overcoat layer being from 1:6 to 1:10.
Claim 20
Dependent Claim
81 words
In a process of preparing a photographic element comprising a support bearing at least one layer of a radiation sensitive silver hallide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a polymeric matting agent, by coating said overlying layer over said adjacent silver halide emulsion layer, the improvement comprising coloring the matting agent so that it is of the same color as the image to be formed in said adjacent emulsion layer.
Claim 21
Dependent Claim
81 words
In a process of preparing a photographic element comprising a support bearing at least one layer of a radiation sensitive silver hallide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a polymeric matting agent, by coating said overlying layer over said adjacent silver halide emulsion layer, the improvement comprising coloring the matting agent so that it is of the same color as the image to be formed in said adjacent emulsion layer.
Claim 22
Dependent Claim
17 words
A process of claim 17 wherein the emulsion layer and the overlying matte layer are coated simultaneously.
Claim 23
Dependent Claim
20 words
A process of claim 17 wherein the matting agent is comprised of polymeric particles colored by dispersing a pigment therein.
Claim 24
Dependent Claim
16 words
A process of claim 19 wherein carbon black is dispersed in the polymeric particles during polymerization.
Claim 25
Dependent Claim
77 words
In a process of preparing a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, adjacent said emulsion layer, an outermost matte layer of a transparent polymeric vehicle containing a polymeric matting agent, by simultaneously coating said outermost matte layer and said adjacent silver halide emulsion layer, the improvement wherein the matting agent is the same color as the image to be formed in said adjacent emulsion layer.
Claim 26
Dependent Claim
77 words
In a process of preparing a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, adjacent said emulsion layer, an outermost matte layer of a transparent polymeric vehicle containing a polymeric matting agent, by simultaneously coating said outermost matte layer and said adjacent silver halide emulsion layer, the improvement wherein the matting agent is the same color as the image to be formed in said adjacent emulsion layer.
Claim 27
Dependent Claim
48 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises cyan polymeric particles.
Claim 28
Dependent Claim
48 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises cyan polymeric particles.
Claim 29
Dependent Claim
48 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises magenta polymeric particles.
Claim 30
Dependent Claim
48 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises magenta polymeric particles.
Claim 31
Dependent Claim
48 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises yellow polymeric particles.
Claim 32
Dependent Claim
48 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises yellow polymeric particles.
Claim 33
Dependent Claim
72 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises black spherical polymeric beads having a mean diameter of 2.5 to 10 microns and wherein the weight ratio of vehicle to beads is between 4:1 to 50:1.
Claim 34
Dependent Claim
72 words
In a photographic element comprising a support bearing at least one layer of a radiation sensitive silver halide emulsion and, overlying and adjacent said emulsion layer, a matte layer of a transparent polymeric vehicle containing a matting agent, the improvement wherein the matting agent comprises black spherical polymeric beads having a mean diameter of 2.5 to 10 microns and wherein the weight ratio of vehicle to beads is between 4:1 to 50:1.
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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) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |