US4859566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image-receiving material
Assignee: Agfa Gevaert NV
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Filing: 1988-08-04
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Granted: 1989-08-22
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Expires: 2008-08-04
Abstract
Abstract Image receiving material suited for use in the silver complex diffusion transfer reversal process which material contains a water-impermeable support coated with (1) an image-receiving layer containing physical development nuclei dispersed in a waterpermeable binder and (2) a waterpermeable top layer free from development nuclei and containing a hydrophilic colloid, characterized in that: (i) the total solids coverage of said two layers (1) and (2) is at most 2 g/m2, (ii) in layer (1) the coverage of said nuclei is in the range of 0.1 mg/m2 to 10 mg/m2, and the coverage of binder is in the range of 0.4 to 1.3 g/m2, and (iii) in said top layer (2) the coverage of hydrophilic colloid is in the range of 0.1 to 0.9 g/m2.
Inventors
- 👤 Rene M. De Keyzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:12
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52; G03C8/24; G03C8/26; G03C8/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
126 words
An image receivng material suited for use in the silver complex diffusion transfer reversal process which material contains a water-impermeable support coated with ( 1) an image-receiving layer containing physical development nuclei dispersed in a waterpermeable binder and (2) a waterpermeable top layer free from development nuclei and containing a hydrophilic colloid. characterized in that: (i) the total solids coverage of said two layers (1) and (2) is at most 2 g/m2, (ii) in layer (1) the coverage of said nuclei is in the range of 0.1 mg/m2 to 10 mg/m2, and the coverage of binder is in the range of 0.4 to 1.3 g/m2, and (iii) in said top layer (2) the coverage of hydrophilic colloid is in the range of 0.1 to 0.9 g/m2.
Claim 2
Dependent Claim
126 words
An image receivng material suited for use in the silver complex diffusion transfer reversal process which material contains a water-impermeable support coated with ( 1) an image-receiving layer containing physical development nuclei dispersed in a waterpermeable binder and (2) a waterpermeable top layer free from development nuclei and containing a hydrophilic colloid. characterized in that: (i) the total solids coverage of said two layers (1) and (2) is at most 2 g/m2, (ii) in layer (1) the coverage of said nuclei is in the range of 0.1 mg/m2 to 10 mg/m2, and the coverage of binder is in the range of 0.4 to 1.3 g/m2, and (iii) in said top layer (2) the coverage of hydrophilic colloid is in the range of 0.1 to 0.9 g/m2.
Claim 3
Dependent Claim
28 words
An image receiving material according to claim 1, wherein the support is a transparent or opaque support that at the side of the image receiving layer is water-impermeable.
Claim 4
Dependent Claim
21 words
An image receiving material according to claim 2, wherein the support is a hydrophobic resin support or resin coated paper support.
Claim 5
Dependent Claim
59 words
An image receiving material according to claim 1, wherein the nuclei containing layer (1) is present on a nuclei-free underlying hydrophilic colloid undercoat layer or undercoat layer system having a coverage in the range of 0.1 to 1 g/m2 of hydrophilic colloid, the total coverage of layers (1) and (2) together with the undercoat being at most 2 g/m2.
Claim 6
Dependent Claim
40 words
An image receiving material according to claim 4, wherein the image-receiving layer is applied on an undercoat playing the role of a timing layer in association with an acidic layer serving for the neutralization of alkali of the image-receiving layer.
Claim 7
Dependent Claim
30 words
An image receiving material according to claim 1, wherein in the image-receiving layer (1) and/or in said top layer (2) and/or in an undercoat gelatin is present as hydrophilic colloid.
Claim 8
Dependent Claim
24 words
An image receiving material according to claim 6, wherein in the image-receiving layer (1) gelatin is present for at least 60 % by weight.
Claim 9
Dependent Claim
40 words
An image receiving material according to claim 6, wherein the gelatin is used in conjunction with an other hydrophilic colloid selected from the group consisting of polyvinyl alcohol, carboxymethyl cellulose, dextran, gallactomannans, alginic acid sodium salt and a watersoluble polyacrylamide.
Claim 10
Dependent Claim
33 words
An image receiving material according to claim 1, wherein the image-receiving material contains an optical brightening agent in the support, image-receiving layer and/or in an undercoat between the support and the image-receiving layer.
Claim 11
Dependent Claim
43 words
An image receiving material according to claim 9, wherein the optical brightening agent is inherently by its structure resistant to diffusion or is made resistant to diffusion by use in conjunction with another substance wherein it is dissolved or whereto it is adsorbed.
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) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |