US4506007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for processing color photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1984-04-09
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Granted: 1985-03-19
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Expires: 2004-04-09
Abstract
Abstract A method for processing an exposed silver halide color photographic material by development and desilvering is described, which comprises the steps of (1) treating said material in a color developing bath, (2) treating the developed material in a bath having incorporated therein at least one compound of formula (I) or a salt thereof: ##STR1## and (3) treating said material in a bath having bleaching or bleach-fixing ability.
Inventors
- 👤 Junya Nakajima
- 👤 Isamu Itoh
- 👤 Kiyohiko Yamamuro
- 👤 Eiiti Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:15
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3046
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
A method for processing an exposed silver halide color photographic material by development and desilvering, which comprises the steps of (1) treating said material in a color developing bath, (2) treating the developed material in a bath having incorporated therein at least one compound of formula (I) or a salt thereof: ##STR24## wherein R 1 and R 2 each represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, provided that at least one of R 1 and R 2 is an alkyl group and R 1 and R 2 may be the same or different, and (3) treating said material in a bath having bleaching or bleach-fixing ability.
Claim 2
Independent Claim
113 words
A method for processing an exposed silver halide color photographic material by development and desilvering, which comprises the steps of (1) treating said material in a color developing bath, (2) treating the developed material in a bath having incorporated therein at least one compound of formula (I) or a salt thereof: ##STR24## wherein R 1 and R 2 each represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, provided that at least one of R 1 and R 2 is an alkyl group and R 1 and R 2 may be the same or different, and (3) treating said material in a bath having bleaching or bleach-fixing ability.
Claim 3
Dependent Claim
22 words
A method as in claim 1, wherein at least one of R 1 and R 2 is a methyl or ethyl group.
Claim 4
Dependent Claim
28 words
A method as in claim 1, wherein the compound of formula (I) is incorporated in a concentration range of from 1×10 -3 to 2×10 -1 mol per liter.
Claim 5
Dependent Claim
28 words
A method as in claim 1, wherein the compound of formula (I) is incorporated in a concentration range of from 5×10 -3 to 5×10 -2 mol per liter.
Claim 6
Dependent Claim
19 words
A method as in claim 1, wherein the bath of step (2) has a pH not higher than 9.
Claim 7
Dependent Claim
23 words
A method as in claim 1, wherein the bath of step (2) has a pH in the range of from 3 to 7.
Claim 8
Dependent Claim
33 words
A method as in claim 1, wherein processing in the bath of step (2) is performed at between 20° C. and 50° C. for a period of from 5 seconds to 5 minutes.
Claim 9
Dependent Claim
33 words
A method as in claim 1, wherein processing in the bath of step (2) is performed at between 20° C. and 50° C. for a period of from 10 seconds to 2 minutes.
Claim 10
Dependent Claim
24 words
A method as in claim 1, wherein the compound of formula (I) is incorporated in the both bathes of step (2) and step (3).
References Cited (Backward Citations)
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US4144068A
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US4242442A
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US4328306A
Cited
US4458010A
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US4446225A
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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) | 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 |