US3221315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording medium utilizing microscopic capsules containing magnetic material
Assignee: NCR Voyix Corp
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Filing: 1962-06-25
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Granted: 1965-11-30
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Jr George T Brown
- 👤 Joseph A Bakan
- 👤 David J Striley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:17
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; B; B43; B43L; B43L1/00; B43L1/008; G; G06; G06K; G06K19/00; G06K19/06; G06K19/06187; G11; G11B; G11B5/00; G11B5/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A RECORDING MEDIUM COMPRISING A BASE MEMBER HAVING A FIXED LIGHT-RESPONSIVE CHARACTERISTIC, AND A MAGNETIC-FIELD-SENSITIVE COATING CARRIER BY SAID BASE MEMBER, SAID MAGNETIC-FIELD-SENSITIVE COATING COMPRISING INDIVIDUAL LIGHT-TRANSMITTING MICROSCOPIC CAPSULES UNIFORMLY DISPERSED THROUGHOUT SAID COATING, EACH OF SAID CAPSULES HAVING A WALL OF HARDENED COLLOID MATERIAL ENCLOSING AN OILY LIQUID CONTAINING A DISPERSION OF MAGNETIC PARTICLES ORIENTABLE WITH RESPECT TO SAID BASE MEMBER BY A MAGNETIC FIELD, SAID MAGNETIC-FIELD-SENSITIVE COATING HAVING A VARIABLE LIGHT-RESPONSIVE CHARACTERISTIC VARIABLE WITH RESPECT TO SAID FIXED LIGHT-RESPONSIVE CHARACTERISTIC OF SAID BASE MEMBER AS DETERMINED BY ORIENTATION OF SAID MAGNETIC PARTICLES WITH RESPECT TO SAID BASE MEMBER, SAID BASE MEMBER AND SAID MAGNETIC-FIELD-SENSITIVE COATING COOPERATING TO PRODUCE VISUAL RECORDINGS IN AREAS OF SAID RECORDING MEDIUM WHERE SAID MAGNETIC PARTICLES ARE ORIENTATED DIFFERENTLY FROM SAID MAGNETIC PARTICLES IN OTHER AREAS.
Claim 2
Dependent Claim
132 words
A RECORDING MEDIUM COMPRISING A BASE MEMBER HAVING A FIXED LIGHT-RESPONSIVE CHARACTERISTIC, AND A MAGNETIC-FIELD-SENSITIVE COATING CARRIER BY SAID BASE MEMBER, SAID MAGNETIC-FIELD-SENSITIVE COATING COMPRISING INDIVIDUAL LIGHT-TRANSMITTING MICROSCOPIC CAPSULES UNIFORMLY DISPERSED THROUGHOUT SAID COATING, EACH OF SAID CAPSULES HAVING A WALL OF HARDENED COLLOID MATERIAL ENCLOSING AN OILY LIQUID CONTAINING A DISPERSION OF MAGNETIC PARTICLES ORIENTABLE WITH RESPECT TO SAID BASE MEMBER BY A MAGNETIC FIELD, SAID MAGNETIC-FIELD-SENSITIVE COATING HAVING A VARIABLE LIGHT-RESPONSIVE CHARACTERISTIC VARIABLE WITH RESPECT TO SAID FIXED LIGHT-RESPONSIVE CHARACTERISTIC OF SAID BASE MEMBER AS DETERMINED BY ORIENTATION OF SAID MAGNETIC PARTICLES WITH RESPECT TO SAID BASE MEMBER, SAID BASE MEMBER AND SAID MAGNETIC-FIELD-SENSITIVE COATING COOPERATING TO PRODUCE VISUAL RECORDINGS IN AREAS OF SAID RECORDING MEDIUM WHERE SAID MAGNETIC PARTICLES ARE ORIENTATED DIFFERENTLY FROM SAID MAGNETIC PARTICLES IN OTHER AREAS.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |