US4065798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning cartridge
Assignee: Fujifilm Holdings Corp
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Filing: 1976-08-26
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Granted: 1977-12-27
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Expires: 1996-08-26
Abstract
Abstract A cartridge for cleaning a magnetic head for use with flexible discs. The cartridge contains a cleaning disc comprising a flexible and non-magnetic support, with a magnetic layer provided on one or both surfaces of the flexible and non-magnetic support. A fibrous material layer is provided on one layer of the magnetic layers where both surfaces of the cleaning disc carry a magnetic layer or on the surface free of a magnetic layer when only one surface carries a magnetic layer. The flat box-like cartridge has a lubricating layer provided on the inner surface thereof which faces the exposed magnetic layer of the cleaning disc, and is capable of rotatably accomodating the cleaning disc.
Inventors
- 👤 Tsutomu Sugisaki
- 👤 Hideomi Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:20
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/41
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
A cartridge for cleaning magnetic heads for use with a flexible disc which comprises: a cleaning disc comprising a flexible and non-magnetic support, a magnetic layer provided on both surfaces of the flexible and non-magnetic support, and a fibrous material layer for contact with the magnetic head for cleaning thereof provided on one layer of the magnetic layers; and a flat box-like cartridge with a lubricant layer provided on the inner surface of the flat box-like cartridge which faces the exposed magnetic layer of the cleaning disc, which flat box-like cartridge rotatably accomodates the cleaning disc.
Claim 2
Dependent Claim
96 words
A cartridge for cleaning magnetic heads for use with a flexible disc which comprises: a cleaning disc comprising a flexible and non-magnetic support, a magnetic layer provided on both surfaces of the flexible and non-magnetic support, and a fibrous material layer for contact with the magnetic head for cleaning thereof provided on one layer of the magnetic layers; and a flat box-like cartridge with a lubricant layer provided on the inner surface of the flat box-like cartridge which faces the exposed magnetic layer of the cleaning disc, which flat box-like cartridge rotatably accomodates the cleaning disc.
Claim 3
Dependent Claim
97 words
A cartridge for cleaning magnetic heads for use with a flexible disc which comprises: a cleaning disc comprising a flexible and non-magnetic support, a magnetic layer provided on one surface of the flexible and non-magnetic support, and a fibrous material layer for contact with the magnetic head for cleaning thereof provided on the surface free of a magnetic layer; and a flat box-like cartridge with a lubricating layer provided on an inner surface of the flat box-like cartridge which faces the exposed magnetic layer of the cleaning disc, which flat box-like cartridge rotatably accomodates the cleaning disc.
Claim 4
Dependent Claim
97 words
A cartridge for cleaning magnetic heads for use with a flexible disc which comprises: a cleaning disc comprising a flexible and non-magnetic support, a magnetic layer provided on one surface of the flexible and non-magnetic support, and a fibrous material layer for contact with the magnetic head for cleaning thereof provided on the surface free of a magnetic layer; and a flat box-like cartridge with a lubricating layer provided on an inner surface of the flat box-like cartridge which faces the exposed magnetic layer of the cleaning disc, which flat box-like cartridge rotatably accomodates the cleaning disc.
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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |