US3870525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing photographic film having a magnetizable layer thereon and such a photographic film
Assignee: Fujifilm Holdings Corp
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Filing: 1973-04-24
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Granted: 1975-03-11
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Expires: 1993-04-24
Abstract
Abstract A process for producing a photographic film having thereon a magnetic recording layer by applying a dispersion of a magnetic substance to an antihalation layer of a light-sensitive film for cinema, where the dispersion contains a compound or compounds, having at least two or more isocyanato groups or thioisocyanato groups or the anti-halation layer is previously processed with a solution containing the compound. A photographic film where either the magnetic layer contains, or the antihalation layer has been processed with, such a compound or compounds.
Inventors
- 👤 Nobuo Yamamoto
- 👤 Hideo Kawaguchi
- 👤 Katsuharu Furukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:16
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/633; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C5/00; G03C5/12; G03C5/14
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
63 words
A process for producing a photographic film having thereon a magnetic recording layer by applying a dispersion of a magnetic substance to an antihalation layer of a light-sensitive film for cinema, wherein the dispersion contains a compound or compounds, having at least two isocyanato groups or thioisocyanato groups capable of rendering said antihalation layer alkali insoluble, thereby rendering said antihalation layer alkali insoluble.
Claim 2
Dependent Claim
63 words
A process for producing a photographic film having thereon a magnetic recording layer by applying a dispersion of a magnetic substance to an antihalation layer of a light-sensitive film for cinema, wherein the dispersion contains a compound or compounds, having at least two isocyanato groups or thioisocyanato groups capable of rendering said antihalation layer alkali insoluble, thereby rendering said antihalation layer alkali insoluble.
Claim 3
Dependent Claim
63 words
A PROCESS FOR PRODUCING A PHOTOGRAPHIC FILM HAVING THEREON A MAGNETIC RECORDING LAYER BY APPLYING A DISPERSION OF A MAGNETIC SUBSTANCE TO AN ANTIHALATION LAYER OF A LIGHTSENSITIVE FILM FOR CINEMA, WHEREIN THE DISPERSION CONTAINS A COMPOUND OR COMPOUNDS, HAVING AT LEAST TWO ISOCYANATO GROUPS OR THIOSOCYANATO GROUPS CAPABLE OF RENDERING SAID ANTIHALATION LAYER ALKALI INSOLUBLE, THEREBY RENDERING SAID ANTIHALATION LAYER ALKALI INSOLUBLE.
Claim 4
Dependent Claim
63 words
A PROCESS FOR PRODUCING A PHOTOGRAPHIC FILM HAVING THEREON A MAGNETIC RECORDING LAYER BY APPLYING A DISPERSION OF A MAGNETIC SUBSTANCE TO AN ANTIHALATION LAYER OF A LIGHTSENSITIVE FILM FOR CINEMA, WHEREIN THE DISPERSION CONTAINS A COMPOUND OR COMPOUNDS, HAVING AT LEAST TWO ISOCYANATO GROUPS OR THIOSOCYANATO GROUPS CAPABLE OF RENDERING SAID ANTIHALATION LAYER ALKALI INSOLUBLE, THEREBY RENDERING SAID ANTIHALATION LAYER ALKALI INSOLUBLE.
Claim 5
Dependent Claim
46 words
The process as claimed in claim 1 wherein said dispersion of magnetic substance comprises from about 15 to about 45% by weight of ferromagnetic powder, from about 5 to about 20% by weight of binder, and from about 35 to about 80% by weight of solvent.
Claim 6
Dependent Claim
23 words
The process as claimed in claim 2 wherein said dispersion contains 0.05 to 7% by weight, based on said dispersion, of said compound.
Claim 7
Dependent Claim
20 words
The process as claimed in claim 1 wherein said compound has from 2 to 4 isocyanato groups or thioisocyanato groups.
Claim 8
Dependent Claim
20 words
THE PROCESS AS CLAIMED IN CLAIM 1 WHEREIN SAID COMPOUND HAS FROM 2 TO 4 ISOCYANATOR GROUPS OR THIOSOCYANATO GROUPS.
Claim 9
Dependent Claim
42 words
THE PROCESS AS CLAIMED IN CLAIM 4 WHEREIN SAID COMPOUND IS SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS (I) TO (X) BELOW: COMPOUND (I) OCM(CH2)NNCO N=2 - 12, COMPOUND (II) OCN(CH2)M-X-(CH2)NNCO X=0 OR S, COMPOUND (III) SCN(CH2)NNCS N=2 - 10, COMPOUND (IV)
Claim 10
Dependent Claim
22 words
The process as claimed in claim 4 wherein said compound is selected from the group consisting of Compounds (I) to (XI) below:
Claim 11
Dependent Claim
25 words
The process as claimed in claim 1 wherein said magnetic recording layer has of from about 7 to about 13 microns of a dried thickness.
Claim 12
Dependent Claim
27 words
The process as claimed in claim 1 wherein said solution contains from 0.05 to 10% by weight, based on total weight of said solution, of said compound.
Claim 13
Dependent Claim
31 words
The process as claimed in claim 7 wherein the dried thickness of said processing solution is from about one-tenth to about one-fiftieth of the dried thickness of said magnetic recording layer.
Claim 14
Dependent Claim
58 words
A motion picture film having a magnetic recording layer coated on the antihalation layer coating on the film support at the the opposite side of the light sensitive photographic layer, said magnetic recording layer comprising a compound having at least two or more isocyanato groups or thioisocyanato groups capable of and thereby rendering said antihalation layer alkali insoluble.
Claim 15
Dependent Claim
58 words
A motion picture film having a magnetic recording layer coated on the antihalation layer coating on the film support at the the opposite side of the light sensitive photographic layer, said magnetic recording layer comprising a compound having at least two or more isocyanato groups or thioisocyanato groups capable of and thereby rendering said antihalation layer alkali insoluble.
Claim 16
Dependent Claim
57 words
The motion picture film as claimed in claim 9 wherein said magnetic recording layer is coated from a dispersion of the magnetic substance, which comprises from about 15 to about 45% by weight of ferromagnetic powder, from about 5 to about 20% by weight of binder, and from about 35 to about 80% by weight of solvent.
Claim 17
Dependent Claim
26 words
The motion picture film as claimed in claim 10 wherein said dispersion contains from 0.05 to 7% by weight, based on said dispersion, of said compound.
Claim 18
Dependent Claim
22 words
The motion picture film as claimed in claim 9 wherein said compound has from 2 to 4 isocyanato groups or thioisocyanato groups.
Claim 19
Dependent Claim
24 words
The motion picture film as claimed in claim 12 wherein said compound is selected from the groups consisting of Compounds (I) to (XI) below:
Claim 20
Dependent Claim
71 words
A motion picture film having a magnetic recording layer, a subbing layer, and an antihalation layer coated on the film support on the opposite side of the light sensitive photographic layer, said subbing layer comprising a compound having at least two or more isocyanato groups or thioisocyanato groups capable of rendering said antihalation layer alkali insoluble and being in contact with said antihalation layer, thereby rendering said antihalation layer alkali insoluble.
Claim 21
Dependent Claim
71 words
A motion picture film having a magnetic recording layer, a subbing layer, and an antihalation layer coated on the film support on the opposite side of the light sensitive photographic layer, said subbing layer comprising a compound having at least two or more isocyanato groups or thioisocyanato groups capable of rendering said antihalation layer alkali insoluble and being in contact with said antihalation layer, thereby rendering said antihalation layer alkali insoluble.
Claim 22
Dependent Claim
21 words
A motion picture film claimed in claim 14 wherein said compound has from 2 to 4 isocyanato groups or thioisocyanato groups.
Claim 23
Dependent Claim
23 words
A motion picture film claimed in claim 15 wherein said compound is selected from the group consisting of Compounds (I) to (XI) below:
Claim 24
Dependent Claim
74 words
A process for producing a photographic film having thereon a magnetic recording layer by applying a dispersion of a magnetic substance to an antihalation layer of a light-sensitive film for cinema, wherein the antihalation layer is processed with a solution containing a compound or compounds having at least two isocyanato groups or thioisocyanato groups capable of rendering said antihalation layer alkali insoluble before application of said dispersion, thereby rendering said antihalation layer alkali insoluble.
Claim 25
Dependent Claim
74 words
A process for producing a photographic film having thereon a magnetic recording layer by applying a dispersion of a magnetic substance to an antihalation layer of a light-sensitive film for cinema, wherein the antihalation layer is processed with a solution containing a compound or compounds having at least two isocyanato groups or thioisocyanato groups capable of rendering said antihalation layer alkali insoluble before application of said dispersion, thereby rendering said antihalation layer alkali insoluble.
Claim 26
Dependent Claim
46 words
The process as claimed in claim 17 wherein said dispersion of magnetic substance comprises from about 15 to about 45% by weight of ferromagnetic powder, from about 5 to about 20% by weight of binder, and from about 35 to about 80% by weight of solvent.
Claim 27
Dependent Claim
20 words
The process as claimed in claim 17 wherein said compound has from 2 to 4 isocyanato groups or thioisocyanato groups.
Claim 28
Dependent Claim
22 words
The process as claimed in claim 19 wherein said compound is selected from the group consisting of Compounds (I) to (XI) below:
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |