Photographic element with near-infrared antihalation layer
Latest Sterling Diagnostic Imaging, Inc. Patents:
Claims
4. The photographic element recited in claim 1 wherein R.sup.4 and R.sup.5 or R.sup.6 and R.sup.7 are taken together to form a six-membered aromatic ring or a 10-membered aromatic ring.
5. The photographic element recited in claim 4 wherein said six-membered aromatic ring or said 10-membered aromatic ring is substituted with sulfonate or carboxylate.
6. The photographic element recited in claim 1 wherein R.sup.1 or R.sup.2 is an alkyl of 1-10 carbon atoms substituted with a sulfonate or carboxylate and at least one combination of R.sup.4 and R.sup.5 or R.sup.6 and R.sup.7 are taken together to form a six-membered aromatic ring or a 10-membered aromatic ring wherein said six-membered aromatic ring or said 10-membered aromatic ring is substituted with a sulfonate or a carboxylate.
11. The photographic element recited in claim 7 wherein said X.sup.1 and X.sup.2 are the same..Iaddend..Iadd.12. The photographic element recited in claim 1 wherein X.sup.1 and X.sup.2 are chosen from the group consisting of --CR.sup.8 R.sup.9 --, S, and NR.sup.10..Iaddend..Iadd.13. The photographic element recited in claim 3 wherein said X.sup.1 and X.sup.2 are the same..Iaddend..Iadd.14. The photographic element recited in claim 13 wherein said heterocyclic ring is selected from the group consisting of thiazole, benzothiazole, benzoxazole, benzimidazole,
tetrazole, triazole, pyrimidine, and thiadiazole..Iaddend..Iadd.15. The photographic element recited in claim 14 wherein R.sup.1 or R.sup.2 is an alkyl of 1-5 carbon atoms substituted with sulfonate or carboxylate and at least one combination of R.sup.4 and R.sup.5 or R.sup.6 and R.sup.7 are taken together to form a six-membered or 10-membered aromatic ring wherein said six-membered or 10-membered aromatic ring is substituted with a sulfonate or a carboxylate..Iaddend..Iadd.16. The photographic element recited in claim 1 wherein said heterocyclic ring is selected from the group consisting of thiazole, benzothiazole, naphthothiazole, thianaphtheno-7',6',4,5-thiazole, oxazole, benzoxazole, naphthoxazole, selenazole, benzoselenazole, naphthoselenazole, thiazoline, 2-quinoline, 4-quinoline, 1-isoquinoline, 3-isoquinoline, benzimidazole, 3,3-dialkylindolenine, 2-pyridine, 3,3-dialkylbenzindole, tetrazole, triazole, pyrimidine, and thiadiazole..Iaddend..Iadd.17. The photographic element recited in claim 16 wherein said X.sup.1 and X.sup.2 are the same..Iaddend..Iadd.18. The photographic element recited in claim 17 wherein R.sup.1 or R.sup.2 is an alkyl of 1-5 carbon atoms substituted with sulfonate or carboxylate and at least one combination of R.sup.4 and R.sup.5 or R.sup.6 and R.sup.7 are taken together to form a six-membered or 10-membered aromatic ring wherein said six-membered or 10-membered aromatic ring is substituted with a sulfonate or a
carboxylate..Iaddend..Iadd.19. The photographic element recited in claim 9 wherein X.sup.1 and X.sup.2 are chosen from the group consisting of --CR.sup.8 R.sup.9 --, S, and NR.sup.10..Iaddend..Iadd.20. The photographic element recited in claim 19 wherein said X.sup.1 and X.sup.2 are the same..Iaddend..Iadd.21. The photographic element recited in claim 20 wherein said heterocyclic ring is selected from the group consisting of thiazole, benzothiazole, benzoxazole, benzimidazole, tetrazole, triazole, pyrimidine, and thiadiazole..Iaddend..Iadd.22. The photographic element recited in claim 9 wherein said heterocyclic ring is selected from the group consisting of thiazole, benzothiazole, naphthothiazole, thianaphtheno-7',6',4,5-thiazole, oxazole, benzoxazole, naphthoxazole, selenazole, benzoselenazole, naphthoselenazole, thiazoline, 2-quinoline, 4-quinoline, 1-isoquinoline, 3-isoquinoline, benzimidazole, 3,3-dialkylindolenine, 2-pyridine, 3,3-dialkylbenzindole, tetrazole, triazole, pyrimidine, and thiadiazole..Iaddend..Iadd.23. The photographic element recited in claim 22 wherein said X.sup.1 and X.sup.2 are the
same..Iaddend..Iadd.24. The photographic element recited in claim 1 wherein said X.sup.1 and X.sup.2 are the same..Iaddend..Iadd.25. The photographic element recited in claim 10 wherein X.sup.1 and X.sup.2 are chosen from the group consisting of --CR.sup.8 R.sup.9 --, S, and NR.sup.10..Iaddend..Iadd.26. The photographic element recited in claim 25 wherein said X.sup.1 and X.sup.2 are the same..Iaddend..Iadd.27. The photographic element recited in claim 26 wherein said heterocyclic ring is selected from the group consisting of thiazole, benzothiazole, benzoxazole, benzimidazole, tetrazole, triazole, pyrimidine, and thiadiazole..Iaddend..Iadd.28. The photographic element recited in claim 10 wherein said heterocyclic ring is selected from the group consisting of thiazole, benzothiazole, naphthothiazole, thianaphtheno-7',6',4,5-thiazole, oxazole, benzoxazole, naphthoxazole, selenazole, benzoselenazole, naphthoselenazole, thiazoline, 2-quinoline, 4-quinoline, 1-isoquinoline, 3-isoquinoline, benzimidazole, 3,3-dialkylindolenine, 2-pyridine, 3,3-dialkylbenzindole, tetrazole, triazole, pyrimidine, and thiadiazole..Iaddend..Iadd.29. The photographic element recited in claim 28 wherein said X.sup.1 and X.sup.2 are the same..Iaddend.
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Type: Grant
Filed: May 1, 1997
Date of Patent: Mar 30, 1999
Assignee: Sterling Diagnostic Imaging, Inc. (Brevard, NC)
Inventors: Dietrich M. Fabricius (Hendersonville, NC), Thomas Schelhorn (Neu Isenburg)
Primary Examiner: Thorl Chea
Law Firm: Ratner & Prestia
Application Number: 8/847,094
International Classification: G03C 183;
