US4575481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive material for color diffusion transfer with mixed oxidized developer scavenger particles
Assignee: Fujifilm Holdings Corp
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Filing: 1985-03-01
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Granted: 1986-03-11
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Expires: 2005-03-01
Abstract
Abstract A photographic light-sensitive material for a color diffusion transfer process is described, comprising a support having provided thereon (1) at least two silver halide emulsion layers which are in combination with dye-releasing redox compounds, and (2) an intermediate layer between said silver halide emulsion layers; the intermediate layer comprises a hydrophilic colloid having dispersed therein two or more different kinds of particles, with one or more kinds of said particles containing a scavenger for an oxidized product of a developing agent. The material has an improved processing temperature latitude.
Inventors
- 👤 Osamu Takahashi
- 👤 Katsumi Makino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:21
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/20; G03C8/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
246 words
A photographic light-sensitive material for a color diffusion transfer process comprising a support having provided thereon (1) at least two silver halide emulsion layers which are in combination with dye-releasing redox compounds capable of releasing diffusible dyes upon redox reaction with an oxidized product of a silver halide developing agent which is formed by processing development with an alkaline processing solution in the presence of a silver halide developing agent, and (2) an intermediate layer between said silver halide emulsion layers which comprises a hydrophilic colloid having dispersed therein particles containing a reducing component capable of reacting with the oxidized product of the developing agent, wherein said particles comprise: (a) a mixture consisting of two or more kinds of dispersed particles, each comprising said reducing component as a first component and a second component which is miscible with the first component to constitute dispersed particles, wherein said two or more kinds of dispersed particles differ from each other in that the second component is different among the two or more kinds of dispersed particles, or the proportion of the second component to the first component is different among the two or more kinds of dispersed particles; or (b) a mixture consisting of dispersed particles substantially solely comprising said reducing component as a first component and one or more kinds of dispersed particles comprising the same reducing component as said first component and a second component which is miscible with said first component to constitute dispersed particles.
Claim 2
Dependent Claim
246 words
A photographic light-sensitive material for a color diffusion transfer process comprising a support having provided thereon (1) at least two silver halide emulsion layers which are in combination with dye-releasing redox compounds capable of releasing diffusible dyes upon redox reaction with an oxidized product of a silver halide developing agent which is formed by processing development with an alkaline processing solution in the presence of a silver halide developing agent, and (2) an intermediate layer between said silver halide emulsion layers which comprises a hydrophilic colloid having dispersed therein particles containing a reducing component capable of reacting with the oxidized product of the developing agent, wherein said particles comprise: (a) a mixture consisting of two or more kinds of dispersed particles, each comprising said reducing component as a first component and a second component which is miscible with the first component to constitute dispersed particles, wherein said two or more kinds of dispersed particles differ from each other in that the second component is different among the two or more kinds of dispersed particles, or the proportion of the second component to the first component is different among the two or more kinds of dispersed particles; or (b) a mixture consisting of dispersed particles substantially solely comprising said reducing component as a first component and one or more kinds of dispersed particles comprising the same reducing component as said first component and a second component which is miscible with said first component to constitute dispersed particles.
Claim 3
Dependent Claim
32 words
A photographic light-sensitive material as in claim 1, wherein said second component is a high boiling solvent which is substantially water-insoluble and has a boiling point of about 200° C. or more.
Claim 4
Dependent Claim
18 words
A photographic light-sensitive material as in claim 1, wherein said second component is a substantially water-insoluble synthetic polymer.
Claim 5
Dependent Claim
35 words
A photographic light-sensitive material as in claim 3, wherein the polymer is a water-insoluble and organic solvent-soluble homo- or copolymer containing a repeating unit having a ##STR13## bond in its main chain or side chain.
Claim 6
Dependent Claim
24 words
A photographic light-sensitive material as in claim 3, wherein the first component is a hydroquinone having a solidification point of 100° C. or less.
Claim 7
Dependent Claim
47 words
A photographic light-sensitive material as in claim 5, wherein said hydroquinone is a mixture of hydroquinone compounds substituted with two tertiary alkyl groups having 15 carbon atoms at the 2- and 5-positions or 2- and 6-positions of the benzene rings thereof or an isomeric mixture of sec-dodecylhydroquinone.
Claim 8
Dependent Claim
30 words
A photographic light-sensitive material as in claim 1, wherein the reducing component is present in the intermediate layer in an amount of from about 0.4 to 10 mmol/m 2 .
Claim 9
Dependent Claim
34 words
A photographic light-sensitive material as in claim 1, wherein the second component is present in the intermediate layer in a weight proportion of from about 0.1 to 10 with respect to the first component.
Claim 10
Dependent Claim
33 words
A photographic light-sensitive material as in claim 8, wherein the second component is present in the intermediate layer in a weight proportion of from 0.2 to 4 with respect to the first component.
References Cited (Backward Citations)
US4277553A
Cited
US4366236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |