US4374919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion transfer color photographic element with U.V. absorbing agent adjacent protective layer
Assignee: Fujifilm Holdings Corp
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Filing: 1981-10-02
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Granted: 1983-02-22
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Expires: 2001-10-02
Abstract
Abstract A diffusion transfer color photographic element wherein (1) a light-sensitive sheet comprising a support having superposed thereon at least one silver halide emulsion layer having associated therewith a color image providing compound and (2) a cover sheet comprising a support having thereon at least one neutralizing layer and at least one neutralization timing layer are arranged so that they can contact each other with their supports remote the area of contact and which is so designed that a processing composition may be spread in a uniform layer between the light-sensitive sheet (1) and the cover sheet (2), further wherein a protective layer which consists essentially of a hydrophilic colloid is provided as the topmost layer of the light-sensitive sheet (1) and there is provided an ultraviolet absorbant-containing layer for light-sensitive sheet (1) adjacent the protective layer. The element exhibits improved storage stability.
Inventors
- 👤 Masaharu Toriuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:24
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
156 words
A diffusion transfer color photographic element comprising (1) a light-sensitive sheet comprising a support having superposed thereon at least one silver halide emulsion layer having associated therewith a color image-providing compound, (2) a cover sheet comprising a support having thereon in sequence at least one neutralizing layer and at least one neutralization timing layer where said light-sensitive sheets and said cover sheet are arranged so that they may contact with each other on the sides opposite to their respective support sides, (3) an aqueous alkaline processing composition to be spread in a uniform layer between said light-sensitive sheet and said cover sheet, wherein said light-sensitive sheet (1) further comprising a protective layer which consists essentially of a hydrophilic colloid at a position farthest from the support thereof and a layer comprising an organic ultraviolet absorbant at adjacent to said protective layer and closer to the support thereof than said protective layer, and a dye-image receiving layer.
Claim 2
Dependent Claim
156 words
A diffusion transfer color photographic element comprising (1) a light-sensitive sheet comprising a support having superposed thereon at least one silver halide emulsion layer having associated therewith a color image-providing compound, (2) a cover sheet comprising a support having thereon in sequence at least one neutralizing layer and at least one neutralization timing layer where said light-sensitive sheets and said cover sheet are arranged so that they may contact with each other on the sides opposite to their respective support sides, (3) an aqueous alkaline processing composition to be spread in a uniform layer between said light-sensitive sheet and said cover sheet, wherein said light-sensitive sheet (1) further comprising a protective layer which consists essentially of a hydrophilic colloid at a position farthest from the support thereof and a layer comprising an organic ultraviolet absorbant at adjacent to said protective layer and closer to the support thereof than said protective layer, and a dye-image receiving layer.
Claim 3
Dependent Claim
80 words
The diffusion transfer color photographic element as in claim 1, wherein said light-sensitive sheet comprises a transparent support having superposed thereon, in sequence, an image-receiving layer, a white reflecting layer, a light-shielding layer, a red-sensitive emulsion layer having associated therewith a cyan color image-providing compound, a color mixing inhibitor-containing layer, a green-sensitive emulsion layer having associated therewith a magenta color image-providing compound, a color mixing inhibitor-containing layer and a blue-sensitive emulsion layer having associated therewith a yellow color image-providing compound.
Claim 4
Dependent Claim
21 words
The diffusion transfer color photographic element as in claim 1, wherein said neutralization timing layer contains at least one polymer latex.
Claim 5
Dependent Claim
50 words
The diffusion transfer color photographic element as in claim 1, wherein said ultraviolet absorbant has a molecular absorbancy index of 5,000 or more in the maximum absorption wavelength range of 300 nm to 390 nm and is oil soluble insoluble in water in the pH range of 3 to 8.
Claim 6
Dependent Claim
22 words
The diffusion transfer color photographic element as in claim 1, wherein the protective layer of the light-sensitive sheet consists essentially of gelatin.
Claim 7
Dependent Claim
48 words
The diffusion transfer color photographic element as in claim 1, wherein the layer comprising the ultraviolet absorbant further comprises a binder and wherein the ratio of the content of the ultraviolet absorbant to that of binder contained in the ultraviolet absorbant-containing layer is 0.2 or more by weight.
Claim 8
Dependent Claim
26 words
The diffusion transfer color photographic element as in claim 1, wherein said protective layer has a coated film dry thickness of 0.05 micron to 5 microns.
Claim 9
Dependent Claim
21 words
The diffusion transfer color photographic element as in claim 1, wherein said ultraviolet absorbant is oil soluble and insoluble in water.
References Cited (Backward Citations)
US4148648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |