US3853585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1973-02-22
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Granted: 1974-12-10
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Expires: 1993-02-22
Abstract
Abstract A polyolefin-laminated paper support for photographic materials, especially suited for use as a support for a color photographic light-sensitive emulsion, having improved image-resolving power and high strength of adhesion to a photographic emulsion layer coated thereon, is obtained by the combination, in sequence, of a preliminary roughening treatment of the polyolefin surface in a conventional manner and subsequent surface activation treatment of the resultant roughened surface any conventional procedure such as corona discharge, flame treatment, ozone oxidation and the like.
Inventors
- 👤 S Tatsuta
- 👤 W Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:26
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; G03C1/91; G03C1/915
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
64 words
A PROESS FOR THE PRODUCTION OF A PHOTOGRAPHIC MATERIAL COMPRISING A PHOTOGRAPHIC LAYER COATED ON A POLYOLEFIN RESIN LAYER, WHICH PROOCESS COMPRISES FIRSTLY ROUGHENING THE SURFACE OF THE POLYOLEFIN RESIN AND THEN SUBJECTING THE THUS ROUGHENED SURFACE OF A SURFACE ACTIVATION TREATMENT TO THEREBY RENDER THE SURFACE OF THE POLYOLEFIN RESIN HYDROPHILIC, THEREAFTER COATING THE THUS ACTIVATED SURFACE WITH A PHOTOGRAPHIC LAYER COMPRISING GELATIN.
Claim 2
Dependent Claim
64 words
A PROESS FOR THE PRODUCTION OF A PHOTOGRAPHIC MATERIAL COMPRISING A PHOTOGRAPHIC LAYER COATED ON A POLYOLEFIN RESIN LAYER, WHICH PROOCESS COMPRISES FIRSTLY ROUGHENING THE SURFACE OF THE POLYOLEFIN RESIN AND THEN SUBJECTING THE THUS ROUGHENED SURFACE OF A SURFACE ACTIVATION TREATMENT TO THEREBY RENDER THE SURFACE OF THE POLYOLEFIN RESIN HYDROPHILIC, THEREAFTER COATING THE THUS ACTIVATED SURFACE WITH A PHOTOGRAPHIC LAYER COMPRISING GELATIN.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the polyolefin resin layer is at least 20 microns thick.
Claim 4
Dependent Claim
19 words
The process of claim 2 wherein the polyolefin resin layer is from about 20 to about 60 microns thick.
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein the polyolefin resin layer is laminated to a non-polyolefin substrate.
Claim 6
Dependent Claim
11 words
The process of claim 4 wherein sAid non-polyolefin substrate is paper.
Claim 7
Dependent Claim
33 words
The process of claim 1 wherein the polyolefin is a polyolefin homopolymer or a copolymer of ethylene, propylene, butylene or pentene, the olefin comprising at least about 70 mole percent of the copolymer.
Claim 8
Dependent Claim
18 words
The process of claim 6 where the olefin is copolymerized with vinyl acetate, styrene, acrylate, methacrylate or acrylonitrile.
Claim 9
Dependent Claim
48 words
The process of claim 1 wherein the roughening is accomplished by contacting the surface of the polyolefin layer with a solvent capable of dissolving or swelling the polyolefin, contacting being at an elevated temperature, and then contacting the resultant surface with a liquid incapable of dissolving the polyolefin.
Claim 10
Dependent Claim
20 words
The process of claim 1 wherein the roughening is accomplished by foaming or expanding the surface of the polyolefin layer.
Claim 11
Dependent Claim
27 words
The process of claim 1 wherein the roughening is accomplished by incorporating a non-polyolefin substance in the surface of the polyolefin layer and thereafter dissolving the substance.
Claim 12
Dependent Claim
13 words
The process of claim 1 wherein the surface activation is a corona discharge.
Claim 13
Dependent Claim
26 words
The process of claim 1 wherein the surface activation is accomplished by oxidizing the surface of the roughened polyolefin layer by contacting the surface with ozone.
Claim 14
Dependent Claim
23 words
The process of claim 1 wherein the surface activation is accomplished by contacting the surface of the roughened polyolefin layer with chromic acid.
Claim 15
Dependent Claim
24 words
The process of claim 1 wherein the surface activation is accomplished by contacting the surface of the polyolefin layer with an oxidizing gas flame.
References Cited (Backward Citations)
US3535147A
Cited
US3607473A
Cited
US3549406A
Cited
US3582339A
Cited
US3590107A
Cited
US3697305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |