US3885969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic materials which contain barrier layers and antihalation layers
Assignee: Agfa Gevaert AG
•
Filing: 1973-06-04
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Granted: 1975-05-27
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Expires: 1993-06-04
Abstract
Abstract A lyophobic barrier layer consisting of a salt of an acetate of polyvinyl alcohol or of a hydroxyl-containing copolymer and an aldehyde sulfonic acid is arranged between the layer support and the antihalation layer of a photographic material, the layer support of which contains plasticisers.
Inventors
- 👤 Peter Kruck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; Y; Y10; Y10S; Y10S430/00; Y10S430/155
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
87 words
A PHOTOGRAPHIC MATERIAL COMPRISING A SUPPORT HAVING A PAIR OF CONVERSE MAJOR SURFACES AND CONTAINING AT LEAST ONE PLASTICIZER, THE OBSERSE OF SAID CONVERSE SURFACES CARRYING A LIGHT-SENSITIVE EMULSION LAYER, THE REVERSE OF SAID CONVERSE SURFACES CARRING A BARRIER LAYER COMPRISING A POLYMER WHICH CONTAINS AT LEAST ONE SALT OF AN ACETAL OF VINYLALCOHOL AND AN ALDEHYDE SUFPHONIC ACID, ON SAID BARRIER LAYER AN ANTIHALATION LAYER, A BINDER IN SAID ANTIHALATION LAYER FOR PROVIDING A SOLUBILITY CORRESPONDING TO COMPLETE STUBILITY IN A DEVELOPER OF THE FOLLOWING COMPOSITION:
Claim 2
Dependent Claim
87 words
A PHOTOGRAPHIC MATERIAL COMPRISING A SUPPORT HAVING A PAIR OF CONVERSE MAJOR SURFACES AND CONTAINING AT LEAST ONE PLASTICIZER, THE OBSERSE OF SAID CONVERSE SURFACES CARRYING A LIGHT-SENSITIVE EMULSION LAYER, THE REVERSE OF SAID CONVERSE SURFACES CARRING A BARRIER LAYER COMPRISING A POLYMER WHICH CONTAINS AT LEAST ONE SALT OF AN ACETAL OF VINYLALCOHOL AND AN ALDEHYDE SUFPHONIC ACID, ON SAID BARRIER LAYER AN ANTIHALATION LAYER, A BINDER IN SAID ANTIHALATION LAYER FOR PROVIDING A SOLUBILITY CORRESPONDING TO COMPLETE STUBILITY IN A DEVELOPER OF THE FOLLOWING COMPOSITION:
Claim 3
Dependent Claim
22 words
A material as claimed in claim 1 in which there is present a subbing layer between the barrier layer and the support.
Claim 4
Dependent Claim
23 words
A material as claimed in claim 2 in which 0.02 to 0.10 g/m2 of an aqueous or aqueous-alcoholic subbing solution has been applied.
Claim 5
Dependent Claim
16 words
A material as claimed in claim 3 in which 0.04 to 0.08 g/m2 has been applied.
Claim 6
Dependent Claim
26 words
A material as claimed in claim 1 in which the casting solution for the barrier layer contains at least one solvent capable of swelling the support.
Claim 7
Dependent Claim
19 words
A material as claimed in claim 5 in which 0.04 to 0.20 g/m2 of barrier layer has been applied.
Claim 8
Dependent Claim
16 words
A material as claimed in claim 6 in which 0.07 to 0.12 g/m2 has been applied.
Claim 9
Dependent Claim
16 words
A material as claimed in claims 5 in which the casting solution contains water and acetone.
Claim 10
Dependent Claim
19 words
A material as claimed in claim 8 in which the casting solution contains 20 to 60 vol percent acetone.
Claim 11
Dependent Claim
14 words
A material as claimed in claim 1 in which the support is cellulose acetate.
References Cited (Backward Citations)
GB819945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |