US4855220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element having layer for increasing image sharpness comprising a non-diffusible DIR compound
Assignee: Eastman Kodak Co
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Filing: 1988-01-14
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Granted: 1989-08-08
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Expires: 2008-01-14
Abstract
Abstract A photographic element is disclosed that comprises a support having thereon spectrally-sensitized light-sensitive silver halide, a color dye-forming coupler, a DIR compound capable of inhibiting development of the silver halide, and, between the silver halide layer and the source of the image exposure, a layer comprising a non-diffusible filter dye that absorbs light in the region of the spectrum to which the silver halide is sensitized.
Inventors
- 👤 Richard P. Szajewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:54
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029; G03C1/00; G03C1/76; G03C1/825; G03C2200/00; G03C2200/23; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A photographic element for exposure to an image, comprising a support having thereon a layer comprising spectrally-sensitized light-sensitive silver halide and a color dye-forming coupler, a layer, which may be the same as or different than said silver halide layer, comprising a DIR compound that releases a substantially non-diffusible development inhibitor capable of inhibiting development of said silver halide on reacting with an oxidation product of a development agent during development, and a layer, between said silver halide layer and the source of the image exposure, comprising a non-diffusible filter dye that absorbs light in the region of the spectrum to which the silver halide is sensitized.
Claim 2
Dependent Claim
107 words
A photographic element for exposure to an image, comprising a support having thereon a layer comprising spectrally-sensitized light-sensitive silver halide and a color dye-forming coupler, a layer, which may be the same as or different than said silver halide layer, comprising a DIR compound that releases a substantially non-diffusible development inhibitor capable of inhibiting development of said silver halide on reacting with an oxidation product of a development agent during development, and a layer, between said silver halide layer and the source of the image exposure, comprising a non-diffusible filter dye that absorbs light in the region of the spectrum to which the silver halide is sensitized.
Claim 3
Dependent Claim
16 words
A photographic element according to claim 1 wherein the silver halide is sensitized to red light.
Claim 4
Dependent Claim
16 words
A photographic element according to claim 1 wherein the silver halide is sensitized to green light.
Claim 5
Dependent Claim
22 words
A photographic element according to claim 1 wherein the non-diffusible filter dye is removable from the element or decolorizable during photographic processing.
Claim 6
Dependent Claim
24 words
A photographic element according to claim 1 wherein the non-diffusible filter dye layer is located further from the support than the silver halide layer.
Claim 7
Dependent Claim
24 words
A photographic element according to claim 5 wherein the non-diffusible filter dye layer is furthermost from the support of any layer in the element.
References Cited (Backward Citations)
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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) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |