Patent US5151343A successfully refreshed from Google Patents.
US5151343A
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Photographic material and process comprising wash-out naphtholic coupler
Assignee: Eastman Kodak Co
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Filing: 1991-08-22
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Granted: 1992-09-29
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Expires: 2011-08-22
Abstract
Abstract A photographic naphtholic coupler comprising a ballast free naphtholic coupler moiety containing a --CONH 2 group in the 2- position and a ballasted coupling-off group in the 4- position enables good wash out of dye formed upon oxidative coupling from a photographic material during processing of such a photographic material. Such a naphtholic coupler is useful in photographic silver halide materials and processes.
Inventors
- 👤 William J. Begley
- 👤 Teh-Hsuan Chen
- 👤 Hans G. Ling
- 👤 John W. Harder
- 👤 Arlyce T. Bowne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:49
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30523
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A photographic element comprising a support bearing at least one photographic silver halide emulsion layer and an immobile naphtholic coupler capable upon oxidative coupling of forming a dye that is capable of being washed out of the photographic element upon photographic processing, wherein the immobile naphtholic coupler comprises a ballast-free naphtholic coupler moiety comprising a --CONH 2 group in the 2-position and in the 4-position a ballasted coupling-off group that comprises a releasable development inhibitor group.
Claim 2
Dependent Claim
76 words
A photographic element comprising a support bearing at least one photographic silver halide emulsion layer and an immobile naphtholic coupler capable upon oxidative coupling of forming a dye that is capable of being washed out of the photographic element upon photographic processing, wherein the immobile naphtholic coupler comprises a ballast-free naphtholic coupler moiety comprising a --CONH 2 group in the 2-position and in the 4-position a ballasted coupling-off group that comprises a releasable development inhibitor group.
Claim 3
Dependent Claim
45 words
A photographic element as in claim 1 wherein the immobile naphtholic coupler is represented by the formula: ##STR60## wherein Z is a ballasted coupling-off group comprising a releasable development inhibitor group; R 1 is a ballast-free substitutent; and z is 0, 1, 2 or 3.
Claim 4
Dependent Claim
89 words
A photographic element as in claim 1 wherein the coupling-off group is represented by the formula: -LINK).sub.n (TIME).sub.m PUG wherein TIME is a releasable timing group capable of being released from the LINK moiety during photographic processing of the element; LINK is a linking group capable of being released from the naphtholic coupler moiety upon oxidative coupling of the naphtholic coupler; n and m individually are 0, 1, or 2; PUG is a releasable development inhibitor group; and at least one of n and m is 1 or 2.
Claim 5
Dependent Claim
72 words
A photographic element as in claim 1 wherein the naphtholic coupler is represented by the formula: ##STR61## wherein X represents the atoms completing a 5-, 6- or 7-member aryl or heterocyclic ring; BALL is a ballast group; T 2 is a releasable timing group; R 2 and R 3 individually are hydrogen, unsubstituted or substituted alkyl or aryl; q is 0, 1 or 2; and PUG is a releasable development inhibitor group.
Claim 6
Dependent Claim
13 words
A photographic element as in claim 1 wherein the naphtholic coupler is: ##STR62##
Claim 7
Dependent Claim
34 words
A process of forming a photographic image which comprises developing an exposed photographic silver halide emulsion layer with a color developing agent in the presence of a naphtholic coupler as defined in claim 1.
Claim 8
Dependent Claim
22 words
A process of forming a photographic image as in claim 6 wherein the naphtholic coupler is as defined in in claim 4.
Claim 9
Dependent Claim
17 words
A photographic process as in claim 6 wherein the naphtholic coupler is as defined in claim 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) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |