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US4649096A
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Processing compositions for silver complex diffusion transfer process
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1985-04-02
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Granted: 1987-03-10
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Expires: 2005-04-02
Abstract
Abstract Disclosed is a processing composition for silver complex diffusion transfer process which contains the following constituents (A) to (E) or (A) to (F): -(A) MOH (M is an alkali metal) 0.05-0.2 mole/l -(B) an alkanolamine 0.25-0.7 mole/l -(C) a sulfite 0.4-0.7 mole/l -(D) a thiosulfate 0.03-0.08 mole/l -(E) a p-dihydroxybenzene >/=0.07 mole/l -(F) a benzotriazole 10-4-10-2 mole/l, - the sum of (A) and (B) being 0.4 to 0.8 mole/l and the molar ratio of (B) to (A) being above 2.0. This composition can produce images and tone without scumming.
Inventors
- 👤 Yasuo Tsubai
- 👤 Koji Okazaki
- 👤 Shoichi Horii
- 👤 Akio Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:24
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/04; G03C8/06
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
85 words
A processing composition for silver complex diffusion transfer process which contains the following constituents (A) to (E): ______________________________________
(A) MOH (M is an alkali metal)
0.05-0.2 mole/l
(B) an alkanolamine 0.25-0.7 mole/l
(C) a sulfite 0.4-0.7 mole/l
(D) a thiosulfate 0.03-0.08 mole/l
(E) a p-dihydroxybenzene
≧0.07 mole/l
______________________________________ the sum of (A) and (B) being 0.4 to 0.8 mole/l and the molar ratio of (B) to (A) being above 2.0, the alkali component of the processing composition consisting essentially of said constituents (A) and (B).
Claim 2
Dependent Claim
85 words
A processing composition for silver complex diffusion transfer process which contains the following constituents (A) to (E): ______________________________________
(A) MOH (M is an alkali metal)
0.05-0.2 mole/l
(B) an alkanolamine 0.25-0.7 mole/l
(C) a sulfite 0.4-0.7 mole/l
(D) a thiosulfate 0.03-0.08 mole/l
(E) a p-dihydroxybenzene
≧0.07 mole/l
______________________________________ the sum of (A) and (B) being 0.4 to 0.8 mole/l and the molar ratio of (B) to (A) being above 2.0, the alkali component of the processing composition consisting essentially of said constituents (A) and (B).
Claim 3
Dependent Claim
15 words
A processing composition according to claim 1 wherein (A) is sodium hydroxide or potassium hydroxide.
Claim 4
Dependent Claim
59 words
A processing composition according to claim 1 wherein (B) is an alkanoleamine represented by the following general formula; ##STR4## wherein X and X' represent each a hydrogen atom, hydroxyl group, or amino group, l and m represent each 0 or an integer of 1 or larger than 1, and n represents an integer of 1 or larger than 1.
Claim 5
Dependent Claim
15 words
A processing composition according to claim 1 wherein (D) is sodium thiosulfate or potassium thiosulfate.
Claim 6
Dependent Claim
14 words
A processing composition according to claim 1 wherein (E) is hydroquinones, chlorohydroquinones or methylhydroquinones.
Claim 7
Dependent Claim
14 words
A processing composition according to claim 1 which contains 1-phenyl-3-pyrazolidone in addition to (E).
Claim 8
Dependent Claim
20 words
A processing composition according to claim 1 which additionally contains (F) 10 -4 to 10 -2 mole of a benzotriazol.
Claim 9
Dependent Claim
76 words
A processing composition according to claim 7 wherein the benzotriazol (F) is represented by the following general formula: ##STR5## wherein R 1 , R 2 , R 3 , and R 4 represent each a hydrogen atom, alkyl group, alkoxy group, halogen atom, acylamide group, sulfonamide group, cyano group, sulfo group, carboxyl group, alkoxycarbonyl group, aryl group, nitro group, aminocarbonyl group, or ##STR6## group, where R and R' represent each a hydrogen atom or alkyl group.
Claim 10
Dependent Claim
18 words
A processing composition according to claim 8 wherein the benzotriazol is used in combination with a mercapto compound.
Claim 11
Dependent Claim
14 words
A processing composition according to claim 7 containing 0.4 to 0.60 mole/liter of sulfite.
Claim 12
Dependent Claim
37 words
A silver complex diffusion transfer process which comprises imagewise exposing a silver halide emulsion layer and then developing it with the processing composition of claim 1 to transfer silver complex imagewise produced to an image receiving layer.
Claim 13
Dependent Claim
18 words
A processing composition according to claim 1 wherein the molar ratio (B) to (A) is 2.5 or above.
Claim 14
Dependent Claim
18 words
A processing composition according to claim 1 which has a pH of from about 10.0 to about 12.5.
Claim 15
Dependent Claim
18 words
A processing composition according to claim 13 wherein the molar ratio (B) to (A) is 2.5 or above.
Claim 16
Dependent Claim
20 words
A processing composition according to claim 14 wherein the molar ratio of sulfite to p-dihydroxybenzene is from 3.5 to 5.5.
Claim 17
Dependent Claim
20 words
A processing composition according to claim 1 wherein the molar ratio of sulfite to p-dihydroxybenzene is from 3.5 to 5.5.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |