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US5416754A Expired / Lapsed US ⏱️ 0.0 years remaining

Magneto-optical record medium having record/non-record areas and a magneto-optical record/reproduce apparatus using the same

Assignee: Sharp Corp
•
Filing: 1992-12-23
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Granted: 1995-05-16
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Expires: 2012-12-23
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Abstract

Abstract A magneto-optical record/reproduce apparatus utilizes a magneto-optical record medium having a surface on which a record area and a non-record area are defined, the non-record area having a lower friction than that of the record area. The apparatus includes a record/read head disposed in the vicinity of the surface of the magneto-optical record medium, the record/read head being moved away from the magneto-optical record medium during a running state of the magneto-optical record medium for recording or reading information, the record/read head being in contact with the magneto-optical record medium during a stop state of the magneto-optical record medium after terminating the recording or reading of the information, a termination detect section for detecting a termination of the recording/reading of the information related to the magneto-optical record medium, and for outputting a termination detect signal, and a move device for moving the record/read head to a position facing the non-record area based on the termination detect signal from the termination detect section.

Inventors

  • 👤 Junichi Washo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 16:24
CPC Classifications
G; G11; G11B; G11B11/00; G11B11/10; G11B11/105; G11B11/1055; G11B11/10556; G11B11/1058; G11B11/10582; G11B11/10584; G11B11/10595

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 159 words
A magneto-optical record/reproduce apparatus using a magneto-optical record medium having a surface on which a record area and a non-record area are defined, the non-record area having a lower friction than that of the record area, the apparatus comprising: record/read means disposed in the vicinity of the surface of the magneto-optical record medium, the record/read means being moved away from the magneto-optical record medium during a running state of the magneto-optical record medium for recording or reading information, the record/read means being in contact with the magneto-optical record medium during a stop state of the magneto-optical record medium after terminating the recording or reading of the information; termination detect means for detecting a termination of the record/read of the information related to the magneto-optical record medium, and for outputting a termination detect signal; and move means for moving the record/read means to a position facing the non-record area based on the termination detect signal from the termination detect means.
Claim 2
Dependent Claim 159 words
A magneto-optical record/reproduce apparatus using a magneto-optical record medium having a surface on which a record area and a non-record area are defined, the non-record area having a lower friction than that of the record area, the apparatus comprising: record/read means disposed in the vicinity of the surface of the magneto-optical record medium, the record/read means being moved away from the magneto-optical record medium during a running state of the magneto-optical record medium for recording or reading information, the record/read means being in contact with the magneto-optical record medium during a stop state of the magneto-optical record medium after terminating the recording or reading of the information; termination detect means for detecting a termination of the record/read of the information related to the magneto-optical record medium, and for outputting a termination detect signal; and move means for moving the record/read means to a position facing the non-record area based on the termination detect signal from the termination detect means.
Claim 3
Dependent Claim 19 words
A magneto-optical record/reproduce apparatus according to claim 1 wherein the record/read means is positioned above the magneto-optical record medium.
Claim 4
Dependent Claim 46 words
A magneto-optical record/reproduce apparatus according to claim 1 wherein the record/read means is in contact with the non-record area and runs in a relative manner with respect to the magneto-optical record medium period from the stop state to the running state of the magneto-optical record medium.

References Cited (Backward Citations)

US5128922A Cited
US5191563A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-05-15 1998-11-14 1999-05-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-05-15 2002-11-14 2003-05-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-05-15 2006-11-14 2007-05-16 $7700.00 Window Closed / Lapsed

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