Patent US4388401A successfully refreshed from Google Patents.
US4388401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer color reversal light-sensitive material
Assignee: Fujifilm Holdings Corp
•
Filing: 1981-12-29
•
Granted: 1983-06-14
•
Expires: 2001-12-29
Abstract
Abstract A multilayer color reversal light-sensitive material is described, which can provide dye images having improved sharpness and graininess without a drop in color reproducibility, by employing a specific arrangement and construction of emulsion layers in its multi-layer structure, viz., a material comprising a support, a yellow filter layer, a group of green-sensitive emulsion layers, and a group of red-sensitive emulsion layers, wherein said emulsion layer groups are positioned nearer to the support than the yellow filter layer, each of the emulsion layer groups comprises at least two adjacent layers including a high-sensitivity silver halide emulsion layer containing silver halide grains having an average size of from 0.6μ to 2.0μ and a low-sensitivity silver halide emulsion layer containing silver halide grains having an average grain size of from 0.1μ to 0.5μ, and at least one of the green-sensitive low-sensitivity emulsion layer or the red-sensitive low-sensitivity emulsion layer is positioned farther from the support than the high-sensitivity emulsion layer of the corresponding emulsion layer group.
Inventors
- 👤 Kazunori Hasebe
- 👤 Yoshisato Minagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:53
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029; G03C7/3022; G03C1/00; G03C1/005; G03C1/035; G03C2001/0357; G03C2001/03594; G03C2007/3034
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
A multilayer color reversal light-sensitive material comprising a support, a yellow filter layer, a group of green-sensitive emulsion layers, and a group of red-sensitive emulsion layers, wherein said emulsion layer groups are positioned nearer to the support than the yellow filter layer, each of the emulsion layer groups comprises at least two adjacent layers, including a high-sensitivity silver halide emulsion layer containing a coupler and silver halide grains having an average size of from 0.6μ to 2.0μ, and a low-sensitivity silver halide emulsion layer containing a coupler and silver halide grains having an average size of from 0.1μ to 0.5μ, and at least one of the green-sensitive low-sensitivity emulsion layer or the red-sensitive low-sensitivity emulsion layer is positioned farther from the support than the high-sensitivity emulsion layer of the corresponding emulsion layer group.
Claim 2
Dependent Claim
133 words
A multilayer color reversal light-sensitive material comprising a support, a yellow filter layer, a group of green-sensitive emulsion layers, and a group of red-sensitive emulsion layers, wherein said emulsion layer groups are positioned nearer to the support than the yellow filter layer, each of the emulsion layer groups comprises at least two adjacent layers, including a high-sensitivity silver halide emulsion layer containing a coupler and silver halide grains having an average size of from 0.6μ to 2.0μ, and a low-sensitivity silver halide emulsion layer containing a coupler and silver halide grains having an average size of from 0.1μ to 0.5μ, and at least one of the green-sensitive low-sensitivity emulsion layer or the red-sensitive low-sensitivity emulsion layer is positioned farther from the support than the high-sensitivity emulsion layer of the corresponding emulsion layer group.
Claim 3
Dependent Claim
40 words
A multilayer color reversal light-sensitive material as in claim 1, wherein both the green-sensitive, low-sensitivity emulsion layer and the red-sensitive, low-sensitivity emulsion layer are positioned farther from the support than the high-sensitivity emulsion layer of the corresponding emulsion layer group.
Claim 4
Dependent Claim
30 words
A multilayer color reversal light-sensitive material as in claim 1 or 2, wherein the red-sensitive emulsion layer group is positioned closer to the support than the green-sensitive emulsion layer group.
Claim 5
Dependent Claim
31 words
A multilayer color reversal light-sensitive material as in claim 1 or 2, wherein a blue-sensitive emulsion layer is provided at a position farther from the support than the yellow filter layer.
Claim 6
Dependent Claim
29 words
A multilayer color reversal light-sensitive material as in claim 3, wherein a blue-sensitive emulsion layer is provided at a position farther from the support than the yellow filter layer.
Claim 7
Dependent Claim
53 words
A multilayer color reversal light-sensitive material as in claim 1 or 2, wherein the high-sensitivity silver halide emulsion layers contain silver halide grains having an average grain size of from 0.7μ to 1.5μ, and the low-sensitivity silver halide emulsion layers contain silver halide grains having an average size of from 0.15μ to 0.4μ.
Claim 8
Dependent Claim
51 words
A multilayer color reversal light-sensitive material as in claim 3, wherein the high-sensitivity silver halide emulsion layers contain silver halide grains having an average grain size of from 0.7μ to 1.5μ, and the low-sensitivity silver halide emulsion layers contain silver halide grains having an average size of from 0.15μ to 0.4μ.
Claim 9
Dependent Claim
51 words
A multilayer color reversal light-sensitive material as in claim 4, wherein the high-sensitivity silver halide emulsion layers contain silver halide grains having an average grain size of from 0.7μ to 1.5μ, and the low-sensitivity silver halide emulsion layers contain silver halide grains having an average size of from 0.15μ to 0.4μ.
Claim 10
Dependent Claim
51 words
A multilayer color reversal light-sensitive material as in claim 5, wherein the high-sensitivity silver halide emulsion layers contain silver halide grains having an average grain size of from 0.7μ to 1.5μ, and the low-sensitivity silver halide emulsion layers contain silver halide grains having an average size of from 0.15μ to 0.4μ.
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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |