| 摘要 |
A shield assembly ( 48 ) for a tape head ( 34 ) of a tape drive ( 14 ) includes a head shield ( 60 ) that selectively moves between a first position ( 75 A) wherein the tape head ( 34 ) is substantially exposed, and a second position ( 75 B) wherein the tape head ( 34 ) is substantially shielded. In the first position ( 75 A), a shield aperture ( 124 ) exposes the tape head ( 34 ) to a storage tape ( 26 ). The shield assembly ( 48 ) can include a first shield mover ( 62 ) that biases the head shield ( 60 ) to the first position ( 75 A), and a second shield mover ( 64 ) that selectively overcomes the bias of the first shield mover ( 62 ) to move the head shield ( 60 ) to the second position ( 75 B). The head shield ( 60 ) is positioned across the tape head ( 34 ) at a shield wrap angle theta<SUB>2 </SUB>that is greater than a tape wrap angle theta<SUB>1 </SUB>of the storage tape ( 26 ). A surface of the head shield ( 60 ) can include a cleaning region ( 120 ) that includes a head cleaning material. Movement of the head shield ( 60 ) between the first position ( 75 A) and the second position ( 75 B) can cause contact between the cleaning region ( 120 ) and the tape head ( 34 ), resulting in cleaning of the tape head ( 34 ).
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