US4310618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic material and process utilizing blocked dye-forming couplers
Assignee: Eastman Kodak Co
•
Filing: 1980-05-30
•
Granted: 1982-01-12
•
Expires: 2000-05-30
Abstract
Abstract Novel dye-forming couplers have the structure: <IMAGE> wherein: Z represents the atoms to complete, with the attached oxygen atom, the same or different 5-pyrazolone dye-forming coupler moiety, phenol dye-forming coupler moiety or naphthol dye-forming coupler moiety, the * in the ring completed by Z representing the coupling position; R is hydrogen or a coupling-off group; Bl is a blocking group removable, during development, from the coupler moiety completed by Z to which it is directly attached; and n is an integer of 2 to 4.
Inventors
- 👤 Jose M. Fernandez
- 👤 Joseph P. Pepe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:04
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/38; C07D231/40; G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/3212
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
111 words
A photographic element comprising a support and a photosensitive silver halide emulsion having associated therewith a dye-forming coupler having the structure: ##STR18## wherein: Z represents the atoms to complete, with the attached oxygen atom, the same 5-pyrazolone magenta dye-forming coupler moiety, phenol cyan dye-forming coupler moiety or naphthol cyan dye-forming coupler moiety, the * in the ring completed by Z representing the coupling position; R is hydrogen or a coupling-off group; Bl is a blocking group removable, during development, from the coupler moiety completed by Z to which it is directly attached, thereby to activate the coupling position of the coupler moiety; and n is an integer of 2 to 4.
Claim 2
Dependent Claim
111 words
A photographic element comprising a support and a photosensitive silver halide emulsion having associated therewith a dye-forming coupler having the structure: ##STR18## wherein: Z represents the atoms to complete, with the attached oxygen atom, the same 5-pyrazolone magenta dye-forming coupler moiety, phenol cyan dye-forming coupler moiety or naphthol cyan dye-forming coupler moiety, the * in the ring completed by Z representing the coupling position; R is hydrogen or a coupling-off group; Bl is a blocking group removable, during development, from the coupler moiety completed by Z to which it is directly attached, thereby to activate the coupling position of the coupler moiety; and n is an integer of 2 to 4.
Claim 3
Dependent Claim
68 words
A photographic element of claim 1 wherein the dye-forming coupler has the structure: ##STR19## wherein: Z 1 represents the atoms to complete, with the attached oxygen atom, a 5-pyrazolone magenta dye-forming coupler moiety; R is hydrogen or a coupling-off group; n is an integer of 2 to 4; and Cp is a coupler moiety which, upon reaction with oxidized color-developing agent, yields a colorless or alkalisoluble reaction product.
Claim 4
Dependent Claim
65 words
A photographic element of claim 1 wherein the dye-forming coupler has the structure: ##STR20## wherein: Z 1 represents the atoms to complete, with the attached oxygen atom, a 5-pyrazolone magenta dye-forming coupler moiety; R is hydrogen or a coupling-off group; n is an integer of 2 to 4; and R 5 and R 6 represent the atoms to complete an alkalisoluble yellow dye-forming coupler moiety.
Claim 5
Dependent Claim
102 words
A photographic silver halide emulsion containing a dye-forming coupler having the structure: ##STR21## wherein: Z represents the atoms to complete, with the attached oxygen atom, the same 5-pyrazolone magenta dye-forming coupler moiety, phenol cyan dye-forming coupler moiety or naphthol cyan dye-forming coupler moiety, the * in the ring completed by Z representing the coupling position; R is hydrogen or a coupling-off group; Bl is a blocking group removable, during development, from the coupler moiety completed by Z to which it is directly attached, thereby to activate the coupling position of the coupler moiety; and n is an integer of 2 to 4.
Claim 6
Dependent Claim
102 words
A photographic silver halide emulsion containing a dye-forming coupler having the structure: ##STR21## wherein: Z represents the atoms to complete, with the attached oxygen atom, the same 5-pyrazolone magenta dye-forming coupler moiety, phenol cyan dye-forming coupler moiety or naphthol cyan dye-forming coupler moiety, the * in the ring completed by Z representing the coupling position; R is hydrogen or a coupling-off group; Bl is a blocking group removable, during development, from the coupler moiety completed by Z to which it is directly attached, thereby to activate the coupling position of the coupler moiety; and n is an integer of 2 to 4.
Claim 7
Dependent Claim
68 words
A photographic emulsion of claim 4 wherein the dye-forming coupler has the structure: ##STR22## wherein: Z 1 represents the atoms to complete, with the attached oxygen atom, a 5-pyrazolone magenta dye-forming coupler moiety; R is hydrogen or a coupling-off group; n is an integer of 2 to 4; and Cp is a coupler moiety which, upon reaction with oxidized color-developing agent, yields a colorless or alkalisoluble reaction product.
Claim 8
Dependent Claim
65 words
A photographic emulsion of claim 4 wherein the dye-forming coupler has the structure: ##STR23## wherein: Z 1 represents the atoms to complete, with the attached oxygen atom, a 5-pyrazolone magenta dye-forming coupler moiety; R is hydrogen or a coupling-off group; n is an integer of 2 to 4; and R 5 and R 6 represent the atoms to complete an alkalisoluble yellow dye-forming coupler moiety.
Claim 9
Dependent Claim
132 words
A process of forming a dye image in a photographic element comprising a support and a silver halide emulsion, comprising the step of developing the element with a silver halide color-developing agent in the presence of a dye-forming coupler having the structure: ##STR24## wherein: Z represents the atoms to complete, with the attached oxygen atom, the same 5-pyrazolone magenta dye-forming coupler moiety, phenol cyan dye-forming coupler moiety or naphthol cyan dye-forming coupler moiety, the * in the ring completed by Z representing the coupling position; R is hydrogen or a coupling-off group; Bl is a blocking group removable, during development, from the coupler moiety completed by Z to which it is directly attached, thereby to activate the coupling position of the coupler moiety; and n is an integer of 2 to 4.
Claim 10
Dependent Claim
132 words
A process of forming a dye image in a photographic element comprising a support and a silver halide emulsion, comprising the step of developing the element with a silver halide color-developing agent in the presence of a dye-forming coupler having the structure: ##STR24## wherein: Z represents the atoms to complete, with the attached oxygen atom, the same 5-pyrazolone magenta dye-forming coupler moiety, phenol cyan dye-forming coupler moiety or naphthol cyan dye-forming coupler moiety, the * in the ring completed by Z representing the coupling position; R is hydrogen or a coupling-off group; Bl is a blocking group removable, during development, from the coupler moiety completed by Z to which it is directly attached, thereby to activate the coupling position of the coupler moiety; and n is an integer of 2 to 4.
Claim 11
Dependent Claim
11 words
A process of claim 7 wherein the color-developing agent is p-phenylenediamine.
References Cited (Backward Citations)
US2436130A
Cited
US2575182A
Cited
US2706685A
Cited
US2865748A
Cited
UST887007I4
Cited
US3888680A
Cited
GB1546837A
Cited
US4123281A
Cited
US4130427A
Cited
US4157919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |