US4581325A
Expired / Lapsed
US
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Photographic elements incorporating antihalation and/or acutance dyes
Assignee: Eastman Kodak Co
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Filing: 1985-01-23
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Granted: 1986-04-08
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Expires: 2005-01-23
Abstract
Abstract A photographic element of the conventional wet processed type or of the dry silver type which includes an antihalation or acutance dye which absorbs in the near infrared and has a relatively low visible absorption while retaining a high extinction coefficient at max . The dye is of the general formula: ##STR1## in which: m+p=2, n is 0 or 1, s is 0 or 1, Z 1 and Z 2 independently represent the non-metallic atoms necessary to complete a heterocyclic nucleus of the type present in cyanine dyes, R 1 and R 2 independently represent an alkyl or substituted alkyl, alkenyl, substituted alkenyl or aralkyl group of up to 20 carbon atoms, R 3 and R 4 independently represent a hydrogen atom or an alkyl, substituted alkyl, alkenyl or substituted alkenyl group of up to 10 carbon atoms, R 5 , R 6 , R 7 and R 8 , which together may not contain more than 12 carbon atoms, independently represent a hydrogen atom, an alkyl, substituted alkyl, alkenyl, substituted alkenyl, aryl or alkaryl group, or one of R 5 and R 6 together with one of R 7 and R 8 represent the necessary atoms to complete a carbocyclic ring in which case the others of R 5 to R 8 are absent, Q 1 and Q 2 together represent the non-metallic atoms necessary to complete an acidic nucleus of the type present in oxonol or merocyanine dyes.
Inventors
- 👤 Jonathan P. Kitchin
- 👤 Bernard A. Lea
- 👤 Ronald W. Burrows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:54
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/0066; G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/832; Y; Y10; Y10S; Y10S430/00; Y10S430/151; Y10S430/162
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
276 words
A photographic element comprising one or more silver halide photosensitive layers on a substrate, characterized in that the element includes in at least one layer free of silver halide as an antihalation dye, an antihalation effective amount of at least one compound that will provide a transmissive optical density of greater than 0.1 at the λmax of the compound, said compound having the formula: ##STR9## in which: m+p=2, n is 0 or 1, s is 0 or 1, Z 1 and Z 2 independently represent the non-metallic atoms necessary to complete a heterocyclic nucleus of the type present in cyanine dyes, R 1 and R 2 are independently selected from the group consisting of alkyl or substituted alkyl, alkenyl, substituted alkenyl or aralkyl, each group containing not more than 20 carbon atoms, R 3 and R 4 are independently selected from the group consisting of a hydrogen atom or an alkyl, substituted alkyl, alkenyl or substituted alkenyl each of which groups contain not more than 10 carbon atoms, R 5 , R 6 , R 7 and R 8 , which together may not contain more than 12 carbon atoms, are independently selected from the group consisting of a hydrogen atom, an alkyl, substituted alkyl, alkenyl, substituted alkenyl, aryl or alkaryl group, or one of R 5 and R 6 together with one of R 7 and R 8 represent the necessary atoms to complete a carbocyclic ring in which case the others of R 5 to R 8 are absent, Q 1 and Q 2 together represent the non-metallic atoms necessary to complete an acidic nucleus of the type present in oxonol or merocyanine dyes.
Claim 2
Dependent Claim
276 words
A photographic element comprising one or more silver halide photosensitive layers on a substrate, characterized in that the element includes in at least one layer free of silver halide as an antihalation dye, an antihalation effective amount of at least one compound that will provide a transmissive optical density of greater than 0.1 at the λmax of the compound, said compound having the formula: ##STR9## in which: m+p=2, n is 0 or 1, s is 0 or 1, Z 1 and Z 2 independently represent the non-metallic atoms necessary to complete a heterocyclic nucleus of the type present in cyanine dyes, R 1 and R 2 are independently selected from the group consisting of alkyl or substituted alkyl, alkenyl, substituted alkenyl or aralkyl, each group containing not more than 20 carbon atoms, R 3 and R 4 are independently selected from the group consisting of a hydrogen atom or an alkyl, substituted alkyl, alkenyl or substituted alkenyl each of which groups contain not more than 10 carbon atoms, R 5 , R 6 , R 7 and R 8 , which together may not contain more than 12 carbon atoms, are independently selected from the group consisting of a hydrogen atom, an alkyl, substituted alkyl, alkenyl, substituted alkenyl, aryl or alkaryl group, or one of R 5 and R 6 together with one of R 7 and R 8 represent the necessary atoms to complete a carbocyclic ring in which case the others of R 5 to R 8 are absent, Q 1 and Q 2 together represent the non-metallic atoms necessary to complete an acidic nucleus of the type present in oxonol or merocyanine dyes.
Claim 3
Dependent Claim
28 words
A photographic element as claimed in claim 1, characterised in that Z 1 and Z 2 complete a 5 or 6 membered heterocyclic nucleus which may possess substituents.
Claim 4
Dependent Claim
53 words
A photographic element as claimed in claim 2, characterised in that Z 1 and/or Z 2 complete a heterocyclic nucleus 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, and 4-pyridine, each of which nuclei may be substituted.
Claim 5
Dependent Claim
23 words
A photographic element as claimed in claim 1, characterised in that Z 1 and/or Z 2 complete a benzothiazole or a 3,3-dialkylindolenine nucleus.
Claim 6
Dependent Claim
62 words
A photographic element as claimed in claim 1, characterised in that Q 1 and Q 2 complete a moiety which is a derivative of one of the nuclei which may optionally possess substituents selected from the group consisting of indandione, pyrazolone, isoxazolone, oxindole, 2,4,6-trioxohexahydropyrimidine, 2-thio-4,6-dioxohexahydropyrimidine, 3:5-pyrazolidinedione, 2(3H)-imidazo[1,2-a]pyridone, 5,7-dioxo-6,7-dihydro-5-thiazolo[3,2-a]pyrimidine, 2-thio-2,4-oxazolidin-dione, thianaphthenone dioxide, 2-thio-2,4-thiazolidindione, 4-thiazolinone, 2-imino-2,4-oxazolinone, 2,4-imidazolinedione, 2-thio-2,4-imindazolinedione cyclic groups, 5,5-dialkyl-1,3-cyclohexanedione or isopropylidine malonate.
Claim 7
Dependent Claim
35 words
A photographic element as claimed in claim 5, characterised in that the moiety completed by Q 1 and Q 2 contains at least one aliphatic or predominantly aliphatic group having at least 8 carbon atoms.
Claim 8
Dependent Claim
38 words
A photographic element as claimed in claim 6, characterised in that the moiety completed by Q 1 and Q 2 contains two groups which are aliphatic or predominantly aliphatic groups which together have at least 8 carbon atoms.
Claim 9
Dependent Claim
74 words
A photographic element as claimed in claim 5, characterised in that Q 1 and Q 2 complete a moiety of the general formula: ##STR10## in which: R 9 and R 10 are independently selected from the group consisting of a hydrogen atom, an alkyl group which may be substituted, alkenyl, substituted alkenyl, an aryl group which may be substituted or an aralkyl group, each of which groups contain not more than 25 carbon atoms.
Claim 10
Dependent Claim
23 words
A photographic element as claimed in claim 8, characterised in that R 9 and R 10 together contain at least 8 carbon atoms.
Claim 11
Dependent Claim
29 words
A photographic element as claimed in claim 9, characterised in that at least one of R 9 and R 10 represents a group containing at least 8 carbon atoms.
Claim 12
Dependent Claim
30 words
A photographic element as claimed in claim 10, characterised in that at least one of R 9 and R 10 represents an alkyl group having at least 8 carbon atoms.
Claim 13
Dependent Claim
14 words
A photographic element as claimed in claim 1, characterised in that n=s=0 and m=p=1.
Claim 14
Dependent Claim
21 words
A photographic element as claimed in claim 1, characterised in that the photographic element is a conventional wet processed photographic element.
Claim 15
Dependent Claim
24 words
A photographic element as claimed in claim 1, characterised in that the photographic element is a photothermographic element comprising a silver halide photothermographic element.
Claim 16
Dependent Claim
25 words
A photographic element as claimed in claim 1, characterised in that the dye of formula (I) is present in an antihalation backing on said substrate.
Claim 17
Dependent Claim
31 words
A photographic element as claimed in claim 1, characterised in that the dye of formula (I) is present as an underlayer between said substrate and said one or more photosensitive layers.
Claim 18
Dependent Claim
25 words
A photographic element as claimed in claim 13, characterised in that the dye of formula (I) is present in an overcoat above the photosensitive layer.
Claim 19
Dependent Claim
22 words
A photographic element as claimed in claim 1, characterised in that the dye of formula (I) is present in the photosensitive layer.
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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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |