US4544620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tannable multi-colored material
Assignee: 3M Co
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Filing: 1984-05-25
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Granted: 1985-10-01
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Expires: 2004-05-25
Abstract
Abstract A photographic element for use in a method of multicolor image formation by tanning development is a layered structure comprising an optionally primed base support, a layer of colloidal silver, a layer of sensitized silver halide emulsion in gelatin free of hardener, and at least one colored pigment or dye dispersed therein which absorbs radiation.
Inventors
- 👤 Michael T. Macioch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:01
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/315
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
179 words
A tannable photographic element capable of providing a multi-colored image which is layered structure comprising a. a base support, and b. coated thereon in either order or in unitary layer, (1) a layer comprising colloidal silver having in the range of 0.05 to 1.5 g of Ag/m 2 , and (2) a layer comprising a light-sensitive silver halide emulsion in gelatin substantially free of hardener, at least one colored pigment or colored dye that absorbs radiation in the range of 300 to 1000 nm in sufficient quantity to provide a reflection or transmission optical density in the range of 1.0 to 5.0, said colored pigment or colored dye being dispersed in at least one of the colloidal silver and the light-sensitive layers; the total silver in said layer of light-sensitive emulsion and said colloidal silver layer being present in a quantity in the range of 0.5 g/m 2 to 5 g/m 2 , and the gelatin of said emulsion layer being present in a quantity so as to provide a total silver/total gelatin weight ratio of less than 1.5.
Claim 2
Dependent Claim
179 words
A tannable photographic element capable of providing a multi-colored image which is layered structure comprising a. a base support, and b. coated thereon in either order or in unitary layer, (1) a layer comprising colloidal silver having in the range of 0.05 to 1.5 g of Ag/m 2 , and (2) a layer comprising a light-sensitive silver halide emulsion in gelatin substantially free of hardener, at least one colored pigment or colored dye that absorbs radiation in the range of 300 to 1000 nm in sufficient quantity to provide a reflection or transmission optical density in the range of 1.0 to 5.0, said colored pigment or colored dye being dispersed in at least one of the colloidal silver and the light-sensitive layers; the total silver in said layer of light-sensitive emulsion and said colloidal silver layer being present in a quantity in the range of 0.5 g/m 2 to 5 g/m 2 , and the gelatin of said emulsion layer being present in a quantity so as to provide a total silver/total gelatin weight ratio of less than 1.5.
Claim 3
Dependent Claim
12 words
The element according to claim 1 wherein said base support is primed.
Claim 4
Dependent Claim
31 words
The element according to claim 1 further comprising a subbing layer comprising substantially unhardened gelatin coated over said base support at a coating weight of less than 0.3 g/m 2 .
Claim 5
Dependent Claim
16 words
The element according to claim 1 further comprising a protective topcoat layer comprising substantially unhardened gelatin.
Claim 6
Dependent Claim
38 words
The element according to claim 4 further comprising in the range of 0.02 to 0.3 g/m 2 of a non-diffusable hydroquinione compound in at least one of said colloidal silver layer, said light-sensitive layer, or said topcoat layer.
Claim 7
Dependent Claim
27 words
The element according to claim 4 further comprising a tanning developer in at least one of said light-sensitive layer, said colloidal silver layer, or said topcoat layer.
Claim 8
Dependent Claim
22 words
The element according to claim 6 wherein the total gelatin/total tanning developer weight ratio is in the range of 5 to 25.
Claim 9
Dependent Claim
28 words
The tannable photographic element according to claim 1 wherein said silver in said colloidal silver layer is present in the range of 0.3 to 1.5 g/m 2 .
Claim 10
Dependent Claim
34 words
The photographic element according to claim 1 wherein said pigment or dye in said light-sensitive layer is present in the coating in an amount in the range of 0.1 to 4.0 g/m 2 .
Claim 11
Dependent Claim
28 words
The photographic element according to claim 4 further comprising up to 30 weight percent of said at least one pigment or dye dispersed in said protective topcoat layer.
Claim 12
Dependent Claim
24 words
The photographic element according to claim 1 wherein said support is resin coated paper, clear or matte polyester, or clear or matte cellulose triacetate.
Claim 13
Dependent Claim
15 words
The photographic element according to claim 1 wherein said support is flexible, rigid, or strippable.
Claim 14
Dependent Claim
22 words
The photographic element according to claim 6 wherein said at least one tanning developer is selected from hydroquinones, hydroquinones/1-phenyl-3-pyrazolidone, and hydroquinones/N-methyl-p-aminophenol sulfate.
Claim 15
Dependent Claim
20 words
The photographic element according to claim 1 wherein said colored pigment or dye comprises at least two pigments or dyes.
Claim 16
Dependent Claim
15 words
The photographic element according to claim 1 which is capable of providing an engineering drawing.
Claim 17
Dependent Claim
15 words
The photographic element according to claim 1 which is a contact speed paper or film.
Claim 18
Dependent Claim
15 words
The photographic element according to claim 1 which is a camera speed paper or film.
Claim 19
Dependent Claim
13 words
The photographic element according to claim 1 which is phototypesetting paper or film.
Claim 20
Dependent Claim
13 words
The photographic element according to claim 1 which is a laser scanner film.
Claim 21
Dependent Claim
20 words
The photographic element according to claim 1 wherein said element is a laser scanner proofing film on a transparent base.
Claim 22
Independent Claim
286 words
A method for obtaining a colored image comprising the steps of: (a) providing the tannable photographic element which is a layered structure comprising: a base support, and coated thereon in either order or in a unitary layer (1) a layer comprising colloidal silver having in the range of 0.05 to 1.5 g of Ag/m 2 , and (2) a layer comprising a light-sensitive silver halide emulsion in gelatin substantially free of hardener, at least one colored pigment or colored dye that absorbs radiation in the range of 300 to 1000 nm in sufficient quantity to provide a reflection or transmission optical density in the range of 1.0 to 5.0, said colored pigment or colored dye being dispersed in at least one of the colloidal silver and the light-sensitive layers; the total silver in said layer of light-sensitive emulsion and said colloidal silver layer being present in a quantity in the range of 0.5 g/m 2 to 5 g/m 2 , and the gelatin of said emulsion layer being present in a quantity so as to provide a total silver/total gelatin weight ratio of less than 1.5, (b) exposing said element to radiation in the range of 300 to 1000 nanometers, (c) contacting the exposed element with an aqueous activator solution having a pH of at least 9.5, (d) removing unexposed portions of the coated gelatin-containing layers to provide an image, (e) drying the resulting primary color-imaged element, (f) subjecting said resulting primary color image in whole or in part to a bleach-fix solution for a time sufficient to reduce said primary color image to a colorless or changed form and allow a secondary colored image to become visible, and (g) drying the resulting colored imaged element.
Claim 23
Independent Claim
286 words
A method for obtaining a colored image comprising the steps of: (a) providing the tannable photographic element which is a layered structure comprising: a base support, and coated thereon in either order or in a unitary layer (1) a layer comprising colloidal silver having in the range of 0.05 to 1.5 g of Ag/m 2 , and (2) a layer comprising a light-sensitive silver halide emulsion in gelatin substantially free of hardener, at least one colored pigment or colored dye that absorbs radiation in the range of 300 to 1000 nm in sufficient quantity to provide a reflection or transmission optical density in the range of 1.0 to 5.0, said colored pigment or colored dye being dispersed in at least one of the colloidal silver and the light-sensitive layers; the total silver in said layer of light-sensitive emulsion and said colloidal silver layer being present in a quantity in the range of 0.5 g/m 2 to 5 g/m 2 , and the gelatin of said emulsion layer being present in a quantity so as to provide a total silver/total gelatin weight ratio of less than 1.5, (b) exposing said element to radiation in the range of 300 to 1000 nanometers, (c) contacting the exposed element with an aqueous activator solution having a pH of at least 9.5, (d) removing unexposed portions of the coated gelatin-containing layers to provide an image, (e) drying the resulting primary color-imaged element, (f) subjecting said resulting primary color image in whole or in part to a bleach-fix solution for a time sufficient to reduce said primary color image to a colorless or changed form and allow a secondary colored image to become visible, and (g) drying the resulting colored imaged element.
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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |