US4506002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion transfer photographic elements with polymer grafted pigment
Assignee: Fujifilm Holdings Corp
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Filing: 1983-11-28
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Granted: 1985-03-19
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Expires: 2003-11-28
Abstract
Abstract A diffusion transfer photographic element composed of a photosensitive sheet, a cover sheet, and a processing composition contained in a rupturable container in such a manner that the processing composition is spread between both sheets after exposing the photosensitive sheet is disclosed. The whiteness of highlights of images obtained is improved by incorporating a graft carbon black polymer prepared by graft polymerizing a monomer to carbon black in the photographic element, in particular, in the light-shielding layer of the photosensitive sheet. The graft carbon black polymer prepared by graft polymerizing a monomer to carbon black can be uniformly dispersed in an aqueous medium and thus the photographic properties of a diffusion transfer photographic element can be improved using the graft carbon black polymer.
Inventors
- 👤 Hideki Takaki
- 👤 Hiroshi Hayashi
- 👤 Shigetoshi Ono
- 👤 Hisashi Okamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:58
CPC Classifications
G; G03; G03C; G03C7/00; G03C8/00; G03C8/42; G03C8/52
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
47 words
A diffusion transfer photographic element, comprising: a support having thereon at least one of a photosensitive silver halide emulsion layer and an image-receiving layer; said photosensitive element containing a polymer compound obtained by graft polymerizing a monomer compound to a pigment; wherein the pigment is carbon black.
Claim 2
Dependent Claim
47 words
A diffusion transfer photographic element, comprising: a support having thereon at least one of a photosensitive silver halide emulsion layer and an image-receiving layer; said photosensitive element containing a polymer compound obtained by graft polymerizing a monomer compound to a pigment; wherein the pigment is carbon black.
Claim 3
Dependent Claim
18 words
The diffusion transfer photographic element as claimed in claim 1, wherein the monomer compound is an anionic monomer.
Claim 4
Dependent Claim
23 words
The diffusion transfer photographic element as claimed in claim 1, wherein the monomer compound is 2-acrylamido-2-methylpropanesulfonic acid or an alkali metal salt thereof.
Claim 5
Dependent Claim
23 words
The diffusion transfer photographic element as claimed in claim 1, wherein the monomer compound is acrylic acid or an alkali metal salt thereof.
Claim 6
Dependent Claim
38 words
The diffusion transfer photographic element as claimed in claim 1, wherein said photographic element has at least one photosensitive silver halide emulsion layer and at least one image-receiving layer on the same or different support from each other.
Claim 7
Dependent Claim
24 words
The diffusion transfer photographic element as claimed in claim 5, wherein the photosensitive silver halide emulsion layer has a dye image-providing material associated therewith.
Claim 8
Dependent Claim
31 words
The diffusion transfer photographic element as claimed in claim 5, wherein the element is comprised of a plurality of photosensitive silver halide emulsion layers having associated therewith a dye image-providing material.
Claim 9
Dependent Claim
151 words
A lamination integral type color diffusion transfer material comprising a photosensitive sheet having formed, in succession, on a transparent support, an image-receiving layer, a white reflecting layer, a light-shielding layer, a layer containing a cyan dye image-providing material, a red-sensitive silver halide emulsion layer, an interlayer, a layer containing a magenta dye image-providing material, a green-sensitive silver halide emulsion layer, an interlayer, a layer containing a yellow dye image-providing material, a blue-sensitive silver halide emulsion layer, and a protective layer; a cover sheet having on another transparent support a neutralizing layer and a neutralization timing layer; said photosensitive sheet being superposed on said cover sheet in a face-to-face relationship; and a pressure rupturable container containing a carbon black-containing processing composition capable of spreading the processing composition between said two sheets; said light-shielding layer of the photosensitive sheet contains a polymer compound obtained by graft polymerizing a monomer compound to carbon black.
Claim 10
Dependent Claim
151 words
A lamination integral type color diffusion transfer material comprising a photosensitive sheet having formed, in succession, on a transparent support, an image-receiving layer, a white reflecting layer, a light-shielding layer, a layer containing a cyan dye image-providing material, a red-sensitive silver halide emulsion layer, an interlayer, a layer containing a magenta dye image-providing material, a green-sensitive silver halide emulsion layer, an interlayer, a layer containing a yellow dye image-providing material, a blue-sensitive silver halide emulsion layer, and a protective layer; a cover sheet having on another transparent support a neutralizing layer and a neutralization timing layer; said photosensitive sheet being superposed on said cover sheet in a face-to-face relationship; and a pressure rupturable container containing a carbon black-containing processing composition capable of spreading the processing composition between said two sheets; said light-shielding layer of the photosensitive sheet contains a polymer compound obtained by graft polymerizing a monomer compound to carbon black.
Claim 11
Dependent Claim
29 words
The diffusion transfer photographic element as claimed in claim 1, wherein the carbon black is comprised of particles having a size in a range of 90 to 1,800 Å.
Claim 12
Dependent Claim
25 words
The diffusion transfer photographic element as claimed in claim 9, wherein the grafting rate of the monomer to the carbon black is 1 to 200%.
Claim 13
Dependent Claim
32 words
The diffusion transfer photographic element as claimed in claim 10, wherein the carbon black is present in an amount in the range of 0.5 to 5.0 g/m 2 as a solid content.
Claim 14
Dependent Claim
32 words
The diffusion transfer photographic element as claimed in claim 11, wherein the carbon black is present in an amount in the range of 1.0 to 3.0 g/m 2 as a solid content.
Claim 15
Dependent Claim
41 words
The diffusion transfer photographic element as claimed in claim 1, wherein the carbon black is present in a processing composition associated with the element in an amount in the range of 15 to 500 g per 1,000 g of processing composition.
Claim 16
Dependent Claim
37 words
The diffusion transfer photographic element as claimed in claim 13, wherein the carbon black is present in the processing composition in an amount in the range of 50 to 250 g per 1,000 g of processing composition.
Claim 17
Dependent Claim
23 words
The diffusion transfer photographic element as claimed in claim 1, wherein the polymer compound is present in a photographic layer of the element.
Claim 18
Dependent Claim
18 words
The diffusion transfer photographic element as claimed in claim 1, wherein the grafting rate is 5 to 100%.
Claim 19
Dependent Claim
20 words
The diffusion transfer photographic element as claimed in claim 1, wherein the graft polymerization is performed in an aqueous medium.
Claim 20
Dependent Claim
18 words
The diffusion transfer photographic element as claimed in claim 1, wherein the aggregation of carbon black is reduced.
Claim 21
Dependent Claim
19 words
The diffusion transfer photographic element as claimed in claim 1, wherein the monomer compound is a water-soluble monomer compound.
Claim 22
Dependent Claim
25 words
The diffusion transfer photographic element as claimed in claim 19, wherein the grafting rate of the monomer to the carbon black is 1 to 200%.
Claim 23
Dependent Claim
29 words
The diffusion transfer photographic element as claimed in claim 20, wherein the carbon black is comprised of particles having a size in a range of 90 to 1,800 Å.
Claim 24
Dependent Claim
32 words
The diffusion transfer photographic element as claimed in claim 21, wherein the carbon black is present in an amount in the range of 0.5 to 5.0 g/m 2 as a solid content.
Claim 25
Dependent Claim
28 words
The diffusion transfer photographic element as claimed in claim 22, wherein the carbon black is present in an amount in the range of 1.0-3.0 g/m 2 solid content.
Claim 26
Dependent Claim
41 words
The diffusion transfer photographic element as claimed in claim 20, wherein the carbon black is present in a processing composition associated with the element in an amount in the range of 15 to 500 g per 1,000 g of processing composition.
Claim 27
Dependent Claim
37 words
The diffusion transfer photographic element as claimed in claim 24, wherein the carbon black is present in the processing composition in an amount in the range of 50 to 250 g per 1,000 g of processing composition.
Claim 28
Dependent Claim
23 words
The diffusion transfer photographic element as claimed in claim 20, wherein the polymer compound is present in a photographic layer of the element.
Claim 29
Dependent Claim
18 words
The diffusion transfer photographic element as claimed in claim 20, wherein the grafting rate is 5 to 100%.
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) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |