US3617286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic light-sensitive material having a back layer
Assignee: Fujifilm Holdings Corp
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Filing: 1967-07-07
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Granted: 1971-11-02
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Expires: 1987-07-07
Abstract
Abstract In a photographic material having a backing layer for antihalation, the sticking of the back layer to other emulsion layers can be prevented when the material is rolled and stored at a high temperature and high humidity, by incorporating in the backing layer a surface active agent such as 2-ethylhexyl sodium sulfate, sodium N-stearoyltaurine, sodium stearate, sorbitan monostearate, sorbitan tristearate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan monolaurate and behenic acid amide. The surface active agent has the property of forming aggregates which prevent sticking of the backing layer to other layers with which it comes in contact.
Inventors
- 👤 Koji Kameyama
- 👤 Ikuo Fuutagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; Y; Y10; Y10S; Y10S430/00; Y10S430/151
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
33 words
A photographic material as claimed in claim 1, wherein said alkali-soluble resin is a member selected from the groups consisting of styrene-maleic anhydride copolymer, vinyl acetate-maleic anhydride copolymer, butyl vinyl ether-maleic anhydride copolymer.
Claim 2
Dependent Claim
30 words
A photographic material as claimed in claim 1, wherein said antihalation dye is a member selected from the groups consisting of carbon black, 3,9-dihydroxy-6-p-methoxystylxanthorium chloride, tetramethyl-1,4-diaminotriphenyl methane and Malachite Green.
Claim 3
Dependent Claim
29 words
A photographic material as claimed in claim 1, wherein said organic solvent is a member selected from the groups consisting of methanol, ethanol, acetone, isopropanol and methyl ethyl ketone.
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |