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US4568634A
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Processing composition for use in silver salt diffusion transfer containing alkali metal phosphate salt and aminoalcohol
Assignee: Fujifilm Holdings Corp
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Filing: 1984-11-14
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Granted: 1986-02-04
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Expires: 2004-11-14
Abstract
Abstract The present invention relates to a composition for processing, by the silver salt diffusion transfer technique, a photographic material which contains a developing agent and at least one each of a silver halide photographic emulsion layer and an image receiving layer containing nuclei for physical development. The composition contains about 0.03 mol/l to about 0.10 mol/l of a phosphate salt and about 0.3 mol/l to about 1.0 mol/l of a compound of the following formula (I): ##STR1## wherein R is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R 1 is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R 2 and R 3 are each a hydrogen atom or a hydroxyl group, respectively; m and n are each 0 or 1, provided that m and n are not 0 at the same time. The processing composition allows for obtaining a high contrast image by the silver salt diffusion transfer technique.
Inventors
- 👤 Katsumi Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:25
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/04; G03C8/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
165 words
A composition for processing a photographic material by the silver salt diffusion transfer technique which photographic material contains a developing agent and at least one each of a silver halide photographic emulsion layer and an image receiving layer containing nuclei for physical development, said composition containing about 0.03 mol/l to about 0.12 mol/l of an alkali metal phosphate salt and about 0.3 mol/l to about 1.0 mol/l of a compound of the following formula (I): ##STR4## wherein R is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R 1 is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R 2 an R 3 are each a hydrogen atom or a hydroxyl group; m and n are each 0 or 1, provided that m and n are not 0 at the same time; said composition for processing a photographic material being an aqueous alkaline processing composition with a pH in the range of 10-14.
Claim 2
Dependent Claim
165 words
A composition for processing a photographic material by the silver salt diffusion transfer technique which photographic material contains a developing agent and at least one each of a silver halide photographic emulsion layer and an image receiving layer containing nuclei for physical development, said composition containing about 0.03 mol/l to about 0.12 mol/l of an alkali metal phosphate salt and about 0.3 mol/l to about 1.0 mol/l of a compound of the following formula (I): ##STR4## wherein R is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R 1 is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R 2 an R 3 are each a hydrogen atom or a hydroxyl group; m and n are each 0 or 1, provided that m and n are not 0 at the same time; said composition for processing a photographic material being an aqueous alkaline processing composition with a pH in the range of 10-14.
Claim 3
Dependent Claim
26 words
A composition claimed in claim 1, wherein the amount of the phosphate salt is in the range of from about 0.06 mol/l to about 0.1 mol/l.
Claim 4
Dependent Claim
26 words
A composition claimed in claim 1, wherein the compound of the formula (I) is present in an amount of about 0.35 mol/l to about 0.75 mol/l.
Claim 5
Dependent Claim
55 words
A composition claimed in claim 1, wherein the compound of the formula (I) is one member selected from the group consisting of: Compound 1: H 2 N--CH 2 CH 2 OH, Compound 2: CH 3 --NHCH 2 CH 2 OH, Compound 3: NH 2 CH 2 CH 2 CH 2 OH, and Compound 4: ##STR5##
Claim 6
Dependent Claim
16 words
A composition claimed in claim 4, wherein the compound of the formula (I) is Compound 2.
Claim 7
Dependent Claim
19 words
A composition claimed in claim 1, wherein the image receiving layer of the photographic material contains a toning agent.
Claim 8
Dependent Claim
22 words
A composition claimed in claim 1, wherein the phosphate salt is selected from trisodium phosphate, tripotassium phosphate, disodium phosphate or dipotassium phosphate.
Claim 9
Dependent Claim
16 words
A composition claimed in claim 7, wherein the phosphate salt is trisodium phosphate or tripotassium phosphate.
Claim 10
Dependent Claim
13 words
A composition claimed in claim 8, wherein the phosphate salt is trisodium phosphate.
Claim 11
Dependent Claim
20 words
A composition claimed in claim 1, wherein the composition has a pH in the range of from 10.5 to 12.8.
Claim 12
Dependent Claim
26 words
A composition claimed in claim 1, wherein the developing agent of the photographic material is incorporated into the silver halide emulsion layer and/or an adjacent layer.
Claim 13
Dependent Claim
21 words
A composition claimed in claim 11, wherein the developing agent of the photographic material contains a combination of hydroquinones and 3-pyrazolidinones.
Claim 14
Dependent Claim
15 words
A composition claimed in claim 1, wherein the composition is substantially free of developing agent.
Claim 15
Dependent Claim
22 words
A composition claimed in claim 1, wherein the silver halide in the photographic emulsion layer of the photographic material is silver chlorobromide.
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) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |