Claims
- 1. A photographic element comprising a support, at least one photographic silver halide emulsion and a photographic pyrazoloazole coupler having substituted on the azole ring of the coupler a group represented by the structure: ##STR67## wherein: R.sub.1 and R.sub.2 are individually hydrogen, unsubstituted or substituted alkyl or unsubstituted or substituted aryl;
- R3 and R4 are individually hydrogen, unsubstituted or substituted alkyl, unsubstituted or substituted aryl, or ##STR68## wherein at least one of R.sub.3 and R.sub.4 is alkyl, aryl or ##STR69## R.sub.5 is unsubstituted or substituted alkyl, unsubstituted or substituted aryl, or NH--R.sub.6 ; and
- R.sub.6 is unsubstituted or substituted alkyl or unsubstituted or substituted aryl and wherein the photographic silver halide emulsion is a silver bromoiodide emulsion.
- 2. A photographic element as in claim 1 wherein the pyrazoloazole coupler is a pyrazolotriazole coupler.
- 3. A photographic element as in claim 1 wherein the pyrazoloazole coupler comprises at least one water solubilizing group.
- 4. A photographic element as in claim 1 comprising a red-sensitive silver halide emulsion unit having associated therewith a cyan dye image forming material, a green-sensitive silver halide emulsion unit having associated therewith a magenta dye image forming material, and a blue-sensitive silver halide emulsion unit having associated therewith a yellow dye-image forming material, and wherein said pyrazoloazole coupler is associated with at least one of said units.
- 5. A photographic element as in claim 1 wherein at least one R.sub.1 and R.sub.2 is alkyl or aryl.
- 6. A photographic element comprising a support, at least one photographic silver halide emulsion and a photographic coupler represented by the structure: ##STR70## wherein: J is a substituent;
- Q is hydrogen or a coupling-off group;
- X, Y and Z are individually selected from carbon and nitrogen atoms necessary to complete an azole ring;
- R.sub.8 and R.sub.9 are individually hydrogen, unsubstituted or substituted alkyl or unsubstituted or substituted aryl;
- R.sub.10 and R.sub.11 are individually hydrogen, unsubstituted or substituted alkyl, unsubstituted or substituted aryl or ##STR71## wherein at least one of R.sub.10 and R.sub.11 is alkyl, aryl or ##STR72## R.sub.12 is unsubstituted or substituted alkyl, unsubstituted or substituted aryl or NH--R.sub.13 ;
- R.sub.13 is unsubstituted or substituted alkyl or unsubstituted or substituted aryl and further wherein said silver halide emulsion is a silver bromoiodide emulsion.
- 7. A photographic element as in claim 6 wherein the pyrazoloazole coupler is a 1H-pyrazolo [3,2-c]-s-triazole represented by the structure: ##STR73## wherein: R.sub.14 is a substitutent;
- R.sub.15 is unsubstituted or substituted alkyl;
- R.sub.16 is unsubstituted or substituted alkyl, or NH--R.sub.17 ;
- R.sub.17 is unsubstituted or substituted alkyl or unsubstituted or substituted aryl; and
- Q is hydrogen or a coupling-off group.
- 8. A photographic element as in claim 6 wherein the pyrazoloazole coupler is a compound selected from the group consisting of: ##STR74##
- 9. A process of forming a photographic image which comprises developing an exposed silver halide emulsion layer with a color developing agent in the presence of a photographic pyrazoloazole coupler wherein the pyrazoloazole coupler has substituted on the azole ring of the coupler a group represented by the formula: ##STR75## wherein: R.sub.1 and R.sub.2 are individually hydrogen, unsubstituted or substituted alkyl, or unsubstituted or substituted aryl;
- R.sub.3 and R.sub.4 are individually hydrogen, unsubstituted or substituted alkyl, unsubstituted or substituted aryl, or ##STR76## wherein at least one of R.sub.3 and R.sub.4 is alkyl or aryl or ##STR77## R.sub.5 is unsubstituted or substituted alkyl, or NH--R.sub.6 ; and R.sub.6 is unsubstituted or substituted alkyl, or unsubstituted or substituted aryl and further wherein said silver halide emulsion layer is a silver bromoiodide emulsion layer.
- 10. A process as in claim 9 wherein the pyrazoloazole coupler is a pyrazolotriazole.
- 11. A process as in claim 9 wherein the pyrazoloazole coupler is a 1H-pyrazolo[3,2-c]-s-triazole represented by the structure: ##STR78## wherein: R.sub.14 is a substituent;
- R.sub.15 is unsubstituted or substituted alkyl;
- R.sub.16 is unsubstituted or substituted alkyl or NH--R.sub.17 ;
- R.sub.17 is unsubstituted or substituted alkyl or unsubstituted or substituted aryl; and
- Q is hydrogen or a coupling-off group.
- 12. A process as in claim 9 wherein the pyrazoloazole coupler is a compound selected from the group consisting of ##STR79##
- 13. A process as in claim 9 wherein at least one of R.sub.1 and R.sub.2 are alkyl or aryl.
- 14. A photographic element comprising a support, at least one silver halide emulsion and a photographic pyrazolotriazole coupler having substituted on the azole ring of the coupler a group containing a carbon atom (A) bonded directly to the azole ring and wherein the carbon atom (A) is bonded directly to a nitrogen atom in the group and to an unsubstituted or substituted alkyl or aryl group and further wherein said emulsion is a photographic silver bromoiodide emulsion.
- 15. A photographic element comprising a support, at least one silver halide emulsion and a pyrazolo[3,2-c]-s-triazole coupler having in the 3-position a ballast group containing a carbon atom (A) bonded directly to the pyrazolo[3,2-c]-s-triazole nucleus and wherein the carbon atom (A) is bonded directly to a nitrogen atom in the ballast group and to an unsubstituted or substituted alkyl or aryl group and further wherein said emulsion is a photographic silver bromoiodide emulsion.
- 16. A photographic element as in claim 15 wherein the element comprises a support bearing at least one red-sensitive silver halide emulsion layer comprising a cyan image dye-forming coupler; at least one green-sensitive silver halide emulsion layer comprising a magenta image dye-forming coupler; and at least one blue-sensitive silver halide emulsion layer comprising a yellow image dye-forming coupler and wherein the pyrazolo[3,2-c]-s-triazole is represented by the formula: ##STR80##
- 17. A photographic element as in claim 15 wherein the coupler comprises at least one water solubilizing group on the ballast group.
Parent Case Info
This is a continuation of application Ser. No. 297,459, filed Jan. 13, 1989, now abandoned, which is a continuation of Ser. No. 23,518, filed Mar. 9, 1987, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (7)
Number |
Date |
Country |
0178794 |
Apr 1986 |
EPX |
0183445 |
Apr 1986 |
EPX |
0182617 |
May 1986 |
EPX |
0176804 |
Sep 1986 |
EPX |
1247493 |
Sep 1971 |
GBX |
1252418 |
Nov 1971 |
GBX |
1398979 |
Jun 1975 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Research Disclosure No. 12443, Research Disclosure, vol. 124, 1974, Kenneth Mason Publications Ltd., Hampshire, England. |
Research Disclosure No. 17643, Research Disclosure, vol. 176, 1978, Kenneth Mason Publications Ltd., Hampshire, England. |
Continuations (2)
|
Number |
Date |
Country |
Parent |
297459 |
Jan 1989 |
|
Parent |
23518 |
Mar 1987 |
|