US3874877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subbing method for photographic film support
Assignee: Fujifilm Holdings Corp
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Filing: 1972-07-25
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Granted: 1975-04-01
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Expires: 1992-07-25
Abstract
Abstract A polyethylene terephthalate film for a photographic film support is coated with a polyamide-epichlorohydrin resin layer and then a hydrophilic resin layer as subbing layers prior to the application of a photosensitive emulsion layer. The surface of the polyethylene terephthalate film may be subjected to a surface activation treatment.
Inventors
- 👤 Takenori Omichi
- 👤 Teppei Ikeda
- 👤 Shunich Adachihara
- 👤 Mobuo Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:34
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
61 words
A SUBBING METHOD FOR A PHOTOGRAPHIC FILM WHICH COMPRISES APPLYING TO THE SURFACE OF A POLYETHYLENE TEREPHTHALATE FILM A FIRST LAYER OF A POLYAMIDE-EPICHLOROHYDRIN RESIN COMPRISING THE REACTION PRODUCT OF A POLYALKYLENE POLYAMINE AND A DIBASIC CARBOXYLIC ACID, SAID FIRST LAYER NOT CONTAINING A HYDROPHILIC RESIN AND THEN APPLYING A SECOND LAYER OF A HYDROPHILIC RESIN ONTO SAID POLYAMIDE-EPICHLOROHYDRIN RESIN LAYER.
Claim 2
Dependent Claim
61 words
A SUBBING METHOD FOR A PHOTOGRAPHIC FILM WHICH COMPRISES APPLYING TO THE SURFACE OF A POLYETHYLENE TEREPHTHALATE FILM A FIRST LAYER OF A POLYAMIDE-EPICHLOROHYDRIN RESIN COMPRISING THE REACTION PRODUCT OF A POLYALKYLENE POLYAMINE AND A DIBASIC CARBOXYLIC ACID, SAID FIRST LAYER NOT CONTAINING A HYDROPHILIC RESIN AND THEN APPLYING A SECOND LAYER OF A HYDROPHILIC RESIN ONTO SAID POLYAMIDE-EPICHLOROHYDRIN RESIN LAYER.
Claim 3
Dependent Claim
25 words
The subbing method for a photographic film as set forth in claim 1, wherein said polyalkylene polyamine is a polyethylene polyamine or a polypropylene polyamine.
Claim 4
Dependent Claim
34 words
The subbing method for a photographic film as set forth in claim 1, wherein said dibasic carboxylic acid is succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid or sebacic acid.
Claim 5
Dependent Claim
30 words
The subbing method for a photographic film as set forth in claim 1, wherein said dibasic carboxylic acid is itaconic acid, fumaric acid, maleic acid, citraconic acid, or mesaconic acid.
Claim 6
Dependent Claim
54 words
The subbing method for a photographic film support as set forth in claim 1, wherein said layer of said polyamide-epichlorohydrin resin is formed by applying a solution of said polyamide-epichlorohydrin resin having a solids content of 0.0001 parts by weight to 12 parts by weight per 100 parts by volume of a coating liquid.
Claim 7
Dependent Claim
20 words
The subbing method for a photographic film support as set forth in cliam 1, wherein said hydrophilic resin is gelatin.
Claim 8
Dependent Claim
20 words
The subbing method for a photographic film support as set forth in cliam 1, wherein said hydrophilic resin is gelatin.
Claim 9
Dependent Claim
24 words
The subbing method for a photographic film support as set forth in claim 1, wherein said hydrophilic resin is a maleic anhydride-vinyl acetate copolymer.
Claim 10
Dependent Claim
26 words
The subbing method for a photographic film support as set forth in claim 1, wherein said surface of said polyethylene terephthalate film has been surface activated.
Claim 11
Dependent Claim
26 words
The subbing method for a photographic film support as set forth in claim 8, wherein said surface has been surface activated with a corona discharing treatment.
Claim 12
Dependent Claim
24 words
The subbing method for a photographic film suppor as set forth in claim 8, wherein said surface has been surface activated with ultraviolet irradiation.
Claim 13
Dependent Claim
25 words
The subbing method for a photographic film support as set forth in claim 8, wherein said surface has been surface activated with a flame treatment.
Claim 14
Dependent Claim
33 words
A method for preparing a photographic element comprising the subbing method for a photographic film support as set forth in claim 1 and applying a photosensitive emulsion layer to said hydrophilic resin layer.
Claim 15
Dependent Claim
43 words
A polyethylene terephthalate film coated with a substratum layer which comprises a polyamide-epichlorohydrin resin comprising the reaction product of a polyalkylene polyamine and a dibasic carboxylic acid, which substratum does not contain a hydrophilic resin but is receptive to a hydrophilic resin coating.
Claim 16
Dependent Claim
43 words
A polyethylene terephthalate film coated with a substratum layer which comprises a polyamide-epichlorohydrin resin comprising the reaction product of a polyalkylene polyamine and a dibasic carboxylic acid, which substratum does not contain a hydrophilic resin but is receptive to a hydrophilic resin coating.
Claim 17
Dependent Claim
16 words
The film of claim 13 further comprising a hydrophilic resin coated onto said polyamide-epichlorohydrin resin layer.
References Cited (Backward Citations)
US2926116A
Cited
US3582339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |