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US4294907A
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Image-receiving elements
Assignee: Polaroid Corp
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Filing: 1980-04-24
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Granted: 1981-10-13
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Expires: 2000-04-24
Abstract
Abstract Diffusion transfer films and processes are disclosed wherein the processing composition includes a light-reflecting pigment and an optical filter agent, and the image-receiving layer carries over it a layer containing a substantially non-diffusible agent adapted to decolorize optical filter agent immediately adjacent the interface between said processing composition and said decolorizing layer.
Inventors
- 👤 Irena Y. Bronstein-Bonte
- 👤 Edward P. Lindholm
- 👤 Lloyd D. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:55
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/44; G03C8/48; G03C8/52
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
57 words
An image-receiving element for use in a diffusion transfer process, said image-receiving element comprising, in sequence, a transparent support, an image-receiving layer for a diffusible image-providing material, and a layer adapted to decolorize a pH-sensitive phthalein dye in aqueous alkaline solution, said decolorizing layer comprising a polyoxyalkylene decolorizing agent hydrogen bonded with at least one other polymer.
Claim 2
Dependent Claim
57 words
An image-receiving element for use in a diffusion transfer process, said image-receiving element comprising, in sequence, a transparent support, an image-receiving layer for a diffusible image-providing material, and a layer adapted to decolorize a pH-sensitive phthalein dye in aqueous alkaline solution, said decolorizing layer comprising a polyoxyalkylene decolorizing agent hydrogen bonded with at least one other polymer.
Claim 3
Dependent Claim
23 words
An image-receiving element as defined in claim 1 wherein said diffusible image-providing material is a dye and said image-receiving layer contains a mordant.
Claim 4
Dependent Claim
15 words
An image-receiving element as defined in claim 2 wherein said mordant contains quaternary ammonium moieties.
Claim 5
Dependent Claim
15 words
An image-receiving element as defined in claim 2 wherein said dye is a dye developer.
Claim 6
Dependent Claim
17 words
An image-receiving element as defined in claim 1 wherein said polyoxyalkylene polymer is a wax-like polyoxyethylene polymer.
Claim 7
Dependent Claim
14 words
An image-receiving element as defined in claim 5 wherein said polyoxyethylene polymer is ##STR8##
Claim 8
Dependent Claim
21 words
An image-receiving element as defined in claim 1 wherein said other polymer is a copolymer of diacetone acrylamide and methacrylic acid.
Claim 9
Dependent Claim
29 words
An image receiving element as defined in claim 1 wherein said element also includes a neutralizing layer and a timing layer postitioned between said support and said image-receiving layer.
Claim 10
Dependent Claim
73 words
An image-receiving element for use in a diffusion transfer color process, said image-receiving layer comprising, in sequence, a transparent support, an image-receiving layer comprising a mordant for an image dye, and a layer adapted to decolorize a pH-sensitive phthalein dye in aqueous alkaline solution, said phthalein dye including a ##STR9## moiety, said decolorizing layer comprising a mixture of nonylphenol monoether of a polyethylene glycol and a copolymer of diacetone acrylamide and methacrylic acid.
Claim 11
Dependent Claim
73 words
An image-receiving element for use in a diffusion transfer color process, said image-receiving layer comprising, in sequence, a transparent support, an image-receiving layer comprising a mordant for an image dye, and a layer adapted to decolorize a pH-sensitive phthalein dye in aqueous alkaline solution, said phthalein dye including a ##STR9## moiety, said decolorizing layer comprising a mixture of nonylphenol monoether of a polyethylene glycol and a copolymer of diacetone acrylamide and methacrylic acid.
Claim 12
Dependent Claim
16 words
An image-receiving element as defined in claim 9 wherein said decolorizing layer also includes polyvinyl pyrrolidone.
Claim 13
Dependent Claim
34 words
An image-receiving element as defined in claim 9 wherein said decolorizing layer comprises a 1.0/1.0/0.35 to 1.0/0.75/0.35 ratio by weight of a 1:1 copolymer of diacetone acrylamide and methacrylic acid, ##STR10## and polyvinyl pyrrolidone.
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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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |