US5227283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic material
Assignee: Fujifilm Holdings Corp
•
Filing: 1991-08-22
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Granted: 1993-07-13
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Expires: 2011-08-22
Abstract
Abstract A silver halide photographic material is disclosed comprising a support having provided thereon at least one light-sensitive silver halide emulsion and at least one transparent magnetic recording layer, wherein the magnetic recording layer contains a binder and hexagonal platy barium ferrite magnetic particles, and has a degree of gray of at least 70%.
Inventors
- 👤 Hiroyuki Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:44
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/12; G03C5/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
54 words
A silver halide photographic material comprising a support having provided thereon at least one light-sensitive silver halide emulsion layer and at least one transparent magnetic recording layer, wherein the magnetic recording layer consists essentially of a binder and hexagonal platy barium ferrite magnetic particles and has a degree of gray of at least 70%.
Claim 2
Dependent Claim
54 words
A silver halide photographic material comprising a support having provided thereon at least one light-sensitive silver halide emulsion layer and at least one transparent magnetic recording layer, wherein the magnetic recording layer consists essentially of a binder and hexagonal platy barium ferrite magnetic particles and has a degree of gray of at least 70%.
Claim 3
Dependent Claim
26 words
A silver halide photographic material as in claim 1, wherein the hexagonal platy barium ferrite magnetic particles have a thickness of from 0.002 to 0.05 μm.
Claim 4
Dependent Claim
18 words
A silver halide photographic material as in claim 1, wherein the photographic material is a color photographic material.
Claim 5
Dependent Claim
23 words
A silver halide photographic material as in claim 1, wherein the transmitted average density of the magnetic recording layer is 0.5 or less.
Claim 6
Dependent Claim
26 words
A silver halide photographic material as in claim 1, wherein the aspect ratio of the hexagonal platy barium ferrite magnetic particles is from 2.5 to 10.
Claim 7
Dependent Claim
40 words
A silver halide photographic material as in claim 1, wherein the hexagonal platy barium ferrite magnetic particles are contained in the magnetic recording layer in an amount of from 4×10 -4 to 3 g per m 2 of the support.
Claim 8
Dependent Claim
34 words
A silver halide photographic material as in claim 1, wherein the weight ratio of the hexagonal platy barium ferrite magnetic particles to the binder in the magnetic recording layer is from 2:1 to 1:100.
Claim 9
Dependent Claim
33 words
A silver halide photographic material as in claim 1, wherein the magnetic recording layer is established on the side of the support opposite to that having thereon the light-sensitive silver halilde emulaion layer.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |