US4858265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning apparatus for magnetic tape
Assignee: Fujifilm Holdings Corp
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Filing: 1988-09-21
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Granted: 1989-08-22
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Expires: 2008-09-21
Abstract
Abstract An apparatus for cleaning the edges of a magnetic tape cut into final-product widths from a wide raw material web with which magnetic powder shed from the tape and base film dust breaking off in the cutting process are removed without damage to the tape. The apparatus includes an air bearing guide for floating the magnetic tape as it is transported thereon, a cleaning device positioned at a side of the guide and making contact with at least one edge of the magnetic tape, and a magnet device for urging the edge of the tape into close contact with the cleaning device.
Inventors
- 👤 Akihiro Suzuki
- 👤 Akira Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:47
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/50; G11B23/502
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A cleaning apparatus for magnetic tape, comprising: (a) air bearing guide means for floating a magnetic tape transported thereon; (b) strip-like cleaning means positioned at a side of said guide and making contact with at least one edge of said magnetic tape; (c) magnet means for urging said edge of said tape into close contact with said strip-like cleaning means; and (d) driving means for transporting said strip-like cleaning means with a predetermined speed.
Claim 2
Dependent Claim
74 words
A cleaning apparatus for magnetic tape, comprising: (a) air bearing guide means for floating a magnetic tape transported thereon; (b) strip-like cleaning means positioned at a side of said guide and making contact with at least one edge of said magnetic tape; (c) magnet means for urging said edge of said tape into close contact with said strip-like cleaning means; and (d) driving means for transporting said strip-like cleaning means with a predetermined speed.
Claim 3
Dependent Claim
32 words
The cleaning apparatus for magnetic tape as claimed in claim 1, wherein both the running direction of said strip-like cleaning means and said magnetic tape are oblique with respect to one another.
Claim 4
Dependent Claim
20 words
The cleaning apparatus for magnetic tape as claimed in claim 1 or 2, wherein said magnet means comprises an electromagnet.
Claim 5
Dependent Claim
21 words
The cleaning apparatus for magnetic tape as claimed in claim 1 or 2, wherein said magnet means comprises a permanent magnet.
Claim 6
Dependent Claim
20 words
The cleaning apparatus for magnetic tape as claimed in claim 1, wherein said strip-like cleaning means comprises an unwoven fabric.
Claim 7
Dependent Claim
20 words
The cleaning apparatus for magnetic tape as claimed in claim 1, wherein said strip-like cleaning means comprises a lapping tape.
References Cited (Backward Citations)
US4213222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |