Patent US4191679A successfully refreshed from Google Patents.
US4191679A
Expired / Lapsed
US
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Photographic polyester film support
Assignee: Fujifilm Holdings Corp
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Filing: 1978-08-30
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Granted: 1980-03-04
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Expires: 1998-08-30
Abstract
Abstract A photographic polyester film support which is dyed with (a) a dye having a main absorption peak in the wavelength range of about 530 to about 570 nm, (b) a dye having a main absorption peak in the wavelength range of about 640 to about 680 nm and (c) a dye having a main absorption peak in the wavelength range of about 420 to about 460 nm which is represented by the formula (I) below: ##STR1## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 , which may be the same or different, each represents --H, --OH, --NH 2 , --NHR 7 , --NR 7 R 8 , --Cl, --Br, an alkyl group having 4 or less carbon atoms or an alkoxy group having 4 or less carbon atoms; and R 7 and R 8 , which may be the same or different, each represents an alkyl group having 4 or less carbon atoms or an aryl group.
Inventors
- 👤 Tsutomu Okita
- 👤 Masami Satou
- 👤 Noburo Hibino
- 👤 Kazunobu Katoh
- 👤 Masatoshi Sugiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:23
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
168 words
A photographic polyester film support providing reduced halation and light-piping dyed with (a) a dye having a main absorption peak in the wavelength range of about 530 to about 570 nm, (b) a dye having a main absorption peak in the wavelength range of about 640 to about 680 nm, and (c) a dye having a main absorption peak in the wavelength range of about 420 to about 460 nm and represented by the formula (I): ##STR12## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 , which may be the same or different, each represents --H, --OH, --NH 2 , --NHR 7 , --NR 7 R 8 , --Cl, --Br, an alkyl group having 4 or less carbon atoms or an alkoxy group having 4 or less carbon atoms; and R 7 and R 8 , which may be the same or different, each represents an alkyl group having 4 or less carbon atoms or an aryl group.
Claim 2
Dependent Claim
168 words
A photographic polyester film support providing reduced halation and light-piping dyed with (a) a dye having a main absorption peak in the wavelength range of about 530 to about 570 nm, (b) a dye having a main absorption peak in the wavelength range of about 640 to about 680 nm, and (c) a dye having a main absorption peak in the wavelength range of about 420 to about 460 nm and represented by the formula (I): ##STR12## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 , which may be the same or different, each represents --H, --OH, --NH 2 , --NHR 7 , --NR 7 R 8 , --Cl, --Br, an alkyl group having 4 or less carbon atoms or an alkoxy group having 4 or less carbon atoms; and R 7 and R 8 , which may be the same or different, each represents an alkyl group having 4 or less carbon atoms or an aryl group.
Claim 3
Dependent Claim
57 words
The support as claimed in claim 1, wherein dye (c) has a main absorption peak in the wavelength range of 430 to 450 nm, dye (b) has a main absorption peak in the wavelength range of 540 to 560 nm and dye (a) has a main absorption peak in the wavelength range of 650 to 670 nm.
Claim 4
Dependent Claim
28 words
The support as claimed in claim 1, wherein the optical density of the spectral absorption in the wavelength range of 400 to 700 nm is 0.15 or less.
Claim 5
Dependent Claim
20 words
The support as claimed in claim 3, wherein said optical density of the spectral absorption ranges from 0.01 to 0.08.
Claim 6
Dependent Claim
82 words
The support as claimed in claim 1, wherein said dye (c) represented by the formula (I) is a dye represented by the formula (II): ##STR13## wherein R' 1 , R' 2 , R' 4 and R' 5 , which may be the same or different, each represents --H, --OH, --CH 3 , --C 2 H 5 , --CH(CH 3 ) 2 , --C(CH 3 ) 3 , --OC 2 H 5 , --OCH(CH 3 ) 2 or --OC(CH 3 ) 3 .
Claim 7
Dependent Claim
18 words
The support as claimed in claim 1, wherein said dye (c) is 1,5-bis(p-methylbenzamido)anthraquinone, 1,5-bis(o-methylbenzamido)anthraquinone, 1,5-bis(o-methoxybenzamido)anthraquinone, 1-(p-methoxybenzamido)-5-(p-ethoxybenzamido)anthraquinone, or 1-benzamido-5-(2',4'-diethylbenzamido)anthraquinone.
Claim 8
Dependent Claim
13 words
The support as claimed in claim 1, wherein said dye (c) is 1,5-bis(benzamido)anthraquinone.
Claim 9
Dependent Claim
104 words
The support as claimed in claim 1, wherein said dye (a) is a dye represented by the formula (III): ##STR14## wherein R 9 , R 10 , R 11 , R 12 , R 13 and R 14 , which may be the same or different, each represents --H, --OH, --NH 2 , --NHR 15 , --NR 15 R 16 , --Cl, --Br, an alkyl group having 4 or less carbon atoms or an alkoxy group having 4 or less carbon atoms; and R 15 and R 16 each has the same meaning as R 7 and R 8 in the general formula (I).
Claim 10
Dependent Claim
104 words
The support as claimed in claim 1, wherein said dye (b) is a dye represented by the formula (IV): ##STR15## wherein R 17 , R 18 , R 19 , R 20 , R 21 and R 22 , which may be the same or different, each represents --H, --OH, --NH 2 , --NHR 23 , --NR 23 R 24 , --Cl, --Br, an alkyl group having 4 or less carbon atoms or an alkoxy group having 4 or less carbon atoms; and R 23 and R 24 each has the same meaning as R 7 and R 8 in the general formula (I).
Claim 11
Dependent Claim
47 words
The support as claimed in claim 1, wherein the optical density of the main absorption peaks in each of the wavelength ranges of about 420 to about 460 nm, about 530 to about 570 nm and about 640 to about 680 nm ranges from 0.01 to 0.15.
Claim 12
Dependent Claim
13 words
The support as claimed in claim 1, wherein the polyester is polyethylene terephthalate.
Claim 13
Dependent Claim
34 words
The support as claimed in claim 1, wherein in dye (c) the alkyl group for R 1 to R 6 is selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl and t-butyl.
Claim 14
Dependent Claim
104 words
The support as claimed in claim 8, wherein said dye (b) is a dye represented by the formula (IV): ##STR16## wherein R 17 , R 18 , R 19 , R 20 , R 21 and R 22 , which may be the same or different each represents --H, --OH, --NH 2 , NHR 23 , --NR 23 R 24 , --Cl, --Br, an alkyl group having 4 or less carbon atoms or an alkoxy group having 4 or less carbon atoms; and R 23 and R 24 each has the same meaning as R 7 and R 8 in the general formula (I).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |