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US3948664A
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Polyethylene terephthalate film for use as support for radiographic film
Assignee: Fujifilm Holdings Corp
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Filing: 1973-10-15
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Granted: 1976-04-06
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Expires: 1993-10-15
Abstract
Abstract A colored polyetylene terephthalate film to be employed as the support in radiographic films, having incorporated therein certain specific anthraquinone dyes.
Inventors
- 👤 Hiroshi Okuyama
- 👤 Teruo Kobayashi
- 👤 Noburo Hibino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:32
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; G03C1/795; G03C1/7954; Y; Y10; Y10S; Y10S430/00; Y10S430/167
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
35 words
A process for producing a radiographic polyethylene terephthalate film support, which comprises incorporating into said polyethylene terephthalate at a temperature of about 300°C, 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone as a coloring compound prior to shaping said polyethylene terephthalate film.
Claim 2
Dependent Claim
35 words
A process for producing a radiographic polyethylene terephthalate film support, which comprises incorporating into said polyethylene terephthalate at a temperature of about 300°C, 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone as a coloring compound prior to shaping said polyethylene terephthalate film.
Claim 3
Dependent Claim
63 words
The process for producing a polyethylene terephthalate film of claim 1, wherein said polyethylene terephthalate film possesses a chromaticity within the region surrounded by straight lines connecting in turn the four points (x =0.304, y = 0.319), (x - 0.282, y = 0.308), (x = 0.289, y = 0.297) and (x = 0.308, y = 0.313) of the chromaticity diagram of FIG. 2.
Claim 4
Dependent Claim
25 words
A radiographic film comprising a radiographic emulsion layer on a support consisting of a colored polyethylene terephthalate film prepared by the process of claim 1.
Claim 5
Dependent Claim
23 words
A polyethylene terephthalate radiographic film support prepared by the mass coloring method, comprising polyethylene terephthalate having incorporated therein, 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone as a coloring compound.
Claim 6
Dependent Claim
23 words
A polyethylene terephthalate radiographic film support prepared by the mass coloring method, comprising polyethylene terephthalate having incorporated therein, 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone as a coloring compound.
Claim 7
Dependent Claim
54 words
The support of claim 4, wherein said polyethylene terephthalate film possesses a chromaticity within the region surrounded by straight lines connecting in turn, the four points (x = 0.304, y - 0.319), (x = 0.282, Y = 0.308), (x = 0.289, y - 0.297) and (x = 0.308, y - 0.313) of FIG. 2.
Claim 8
Dependent Claim
55 words
The radiographic film of claim 3, wherein said polyethylene terephthalate film possesses a chromaticity within the region surrounded by straight lines connecting in turn, the four points (x = 0.304, y = 0.319), (x = 0.282, y = 0.308), (x = 0.289, y = 0.297) and (x = 0.308, y = 0.313) of FIG. 2.
Claim 9
Dependent Claim
82 words
A process for producing a radiographic polyethylene terephthalate film support which comprises incorporating into said polyethylene terephthalate at a temperature of about 300°C as a color compound 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone prior to shaping said polyethylene terephthalate film, said polyethylene terephthalate film possessing a chromaticity within the region surrounded by straight lines connecting in turn the four points (x = 0.304, y = 0.319), (x = 0.282, y = 0.308). (x = 0.289, y =0.297) and (x = 0.308, y = 0.313) of FIG. 2.
Claim 10
Dependent Claim
82 words
A process for producing a radiographic polyethylene terephthalate film support which comprises incorporating into said polyethylene terephthalate at a temperature of about 300°C as a color compound 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone prior to shaping said polyethylene terephthalate film, said polyethylene terephthalate film possessing a chromaticity within the region surrounded by straight lines connecting in turn the four points (x = 0.304, y = 0.319), (x = 0.282, y = 0.308). (x = 0.289, y =0.297) and (x = 0.308, y = 0.313) of FIG. 2.
Claim 11
Dependent Claim
71 words
A polyethylene terephthalate radiographic film support prepared by the mass coloring method, comprising polyethylene terephthalate having incorporated therein as a color compound 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone, said polyethylene terephthalate film possessing a chromaticity within the region surrounded by straight lines connecting in turn, the four points, (x = 0.304, y = 0.319), (x = 0.282, y = 0.308), (x = 0.289, y = 0.297) and (x = 0.308, y = 0.313) of FIG. 2.
Claim 12
Dependent Claim
71 words
A polyethylene terephthalate radiographic film support prepared by the mass coloring method, comprising polyethylene terephthalate having incorporated therein as a color compound 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone, said polyethylene terephthalate film possessing a chromaticity within the region surrounded by straight lines connecting in turn, the four points, (x = 0.304, y = 0.319), (x = 0.282, y = 0.308), (x = 0.289, y = 0.297) and (x = 0.308, y = 0.313) of FIG. 2.
Claim 13
Dependent Claim
75 words
A radiographic film comprising a radiographic emulsion layer on a support prepared by the mass coloring method, consisting of a colored polyethylene terephthalate film, having incorporated therein, 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone, said polyethylene terephthalate possessing a chromaticity within the region surrounded by straight lines connecting in turn, the four points (x = 0.304, y = 0.319), (x - 0.282, y = 0.308), (x = 0.289, y = 0.297) and (x = 0.308, y = 0.313) of FIG. 2.
Claim 14
Dependent Claim
75 words
A radiographic film comprising a radiographic emulsion layer on a support prepared by the mass coloring method, consisting of a colored polyethylene terephthalate film, having incorporated therein, 1,5-di(o-methylphenylamino)-4,8-dihydroxyanthraquinone, said polyethylene terephthalate possessing a chromaticity within the region surrounded by straight lines connecting in turn, the four points (x = 0.304, y = 0.319), (x - 0.282, y = 0.308), (x = 0.289, y = 0.297) and (x = 0.308, y = 0.313) of FIG. 2.
Claim 15
Dependent Claim
43 words
The process of claim 1, wherein said polyethylene terephthalate film further includes as part of its molecular structure, up to 20% of a component selected from the group consisting of phthalic acid, adipic acid, sebacic acid, azelaic acid, diethylene glycol and polyethylene glycol.
Claim 16
Dependent Claim
42 words
The radiographic film of claim 3, wherein said polyethylene terephthalate film further includes within its molecular structure, up to 20% of a constituent selected from the group consisting of phthalic acid, adipic acid, sebacic acid, azelaic acid, diethylene glycol and polyethylene glycol.
Claim 17
Dependent Claim
41 words
The support of claim 4, wherein said polyethylene terephthalate film further includes within its molecular structure, up to 20% of a constituent selected from the group consisting of phthalic acid, adipic acid, sebacic acid, azelaic acid, diethylene glycol and polyethylene glycol.
References Cited (Backward Citations)
US3488195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |