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US4605608A
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Image-receiving element with crosslinked hydrophilic polymer containing processing composition
Assignee: Polaroid Corp
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Filing: 1985-09-23
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Granted: 1986-08-12
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Expires: 2005-09-23
Abstract
Abstract An image-receiving element for use in a diffusion transfer process comprising a transparent support carrying an image-receiving layer and a hydrogel comprising a hydrophilic polymer layer cross-linked by ionizing radiation, said polymer layer containing aqueous alkaline photographic processing composition.
Inventors
- 👤 Julian G. Bullitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:16
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/32; G03C8/34; G03C8/24; G03C8/26; Y; Y10; Y10S; Y10S430/00; Y10S430/136
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
34 words
An image-receiving element for diffusion transfer processing which comprises a support carrying an image-receiving layer and a hydrogel comprising a hydrophilic polymer cross-linked by ionizing radiation, said hydrogel containing aqueous alkaline photographic processing composition.
Claim 2
Dependent Claim
34 words
An image-receiving element for diffusion transfer processing which comprises a support carrying an image-receiving layer and a hydrogel comprising a hydrophilic polymer cross-linked by ionizing radiation, said hydrogel containing aqueous alkaline photographic processing composition.
Claim 3
Dependent Claim
28 words
The product of claim 1 which includes an opaque layer and a reflective layer and said hydrogel comprises the binder for said opaque layer and said reflective layer.
Claim 4
Dependent Claim
13 words
The product of claim 1 wherein said image-receiving layer includes a dye mordant.
Claim 5
Dependent Claim
13 words
The product of claim 1 wherein said image-receiving layer includes silver precipitating nuclei.
Claim 6
Dependent Claim
10 words
The product of claim 1 wherein said support is transparent.
Claim 7
Dependent Claim
10 words
The product of claim 1 wherein said support is opaque.
Claim 8
Dependent Claim
11 words
The product of claim 1 wherein said polymer is polyethylene oxide.
Claim 9
Dependent Claim
12 words
The product of claim 1 wherein said processing composition has a pH≧12.
Claim 10
Independent Claim
62 words
A method for forming an image-receiving element for use in a diffusion transfer process which comprises the steps of (a) coating a transparent support with an image-receiving layer and a hydrophilic polymer; (b) gelling said polymer to form a hydrogel by subjecting said polymer to sufficient ionizing radiation to form said hydrogel; and (c) imbibing aqueous photographic processing composition into said hydrogel.
Claim 11
Independent Claim
62 words
A method for forming an image-receiving element for use in a diffusion transfer process which comprises the steps of (a) coating a transparent support with an image-receiving layer and a hydrophilic polymer; (b) gelling said polymer to form a hydrogel by subjecting said polymer to sufficient ionizing radiation to form said hydrogel; and (c) imbibing aqueous photographic processing composition into said hydrogel.
Claim 12
Independent Claim
109 words
A method for forming a diffusion transfer image which comprises the steps of (a) exposing a photosensitive element comprising a first support carrying at least a first photosensitive silver halide emulsion layer; (b) superposing an image-receiving element to the outermost layer of said photosensitive element; said image-receiving element comprising a second support carrying an image-receiving layer and a hydrogel, said hydrogel comprising a hydrophilic polymer cross-linked with ionizing radiation and an aqueous alkaline photographic processing composition; whereby a sufficient quantity of said processing composition is absorbed by said photosensitive element to develop said photosensitive silver halide layer, and transferring an imagewise distribution of image-forming material to said image-receiving layer.
Claim 13
Independent Claim
109 words
A method for forming a diffusion transfer image which comprises the steps of (a) exposing a photosensitive element comprising a first support carrying at least a first photosensitive silver halide emulsion layer; (b) superposing an image-receiving element to the outermost layer of said photosensitive element; said image-receiving element comprising a second support carrying an image-receiving layer and a hydrogel, said hydrogel comprising a hydrophilic polymer cross-linked with ionizing radiation and an aqueous alkaline photographic processing composition; whereby a sufficient quantity of said processing composition is absorbed by said photosensitive element to develop said photosensitive silver halide layer, and transferring an imagewise distribution of image-forming material to said image-receiving layer.
Claim 14
Dependent Claim
25 words
The method of claim 10 wherein said silver halide layer has dye image-forming material associated therewith and said image-receiving layer is a dye image-receiving layer.
Claim 15
Dependent Claim
21 words
The method of claim 10 wherein said processing composition includes a silver solvent and said image-receiving layer includes silver precipitating nuclei.
Claim 16
Dependent Claim
22 words
The method of claim 10 wherein said image-receiving element includes an opaque and a reflective layer and said second support is transparent.
Claim 17
Dependent Claim
23 words
The method of claim 10 which includes the step of stripping said image-receiving element from said photosensitive element subsequent to subtantial image formation.
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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) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |