Dynamic optical information storage or retrieval – Dynamic mechanism optical subsystem – Protecting optical transducer
Reexamination Certificate
2004-04-07
2008-03-25
Miller, Brian E. (Department: 2627)
Dynamic optical information storage or retrieval
Dynamic mechanism optical subsystem
Protecting optical transducer
C720S648000, C720S601000
Reexamination Certificate
active
07350220
ABSTRACT:
A disk drive unit advantageously prevents dust from adhering to a pickup. The disk drive unit has a housing and a tray. The tray reciprocates between a retracted position and a projected position. A first pickup and a second pickup have a spindle motor located therebetween. The tray has a first cutout and a second cutout. A cover is provided to cover the top of the second pickup in its retreated position. The cover has a cover piece, which is disposed in a front portion of the cover that is positioned on the upstream side relative to the rotational direction of a disk-shaped recording medium such that it is movable in a direction parallel to the direction in which the second pickup moves, and urged in the projecting direction.
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Hirano Yusuke
Mitsuji Zensaku
Murata Morihiro
Negoro Hisashi
Obata Manabu
Kayrish Matthew G.
Miller Brian E.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
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