G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/08 (2006.01) G11B 7/00 (2006.01) G11B 7/085 (2006.01)
Patent
CA 2041987
An optical disk drive of the type having a fixed optical unit (13) having a light transmitting hole (19) from which a laser beam is emitted, and a movable head (14) having a light receiving hole (20) from which the laser beam is received, wherein the respective outer edges of the light emitting and receiving holes (19, 20) are surrounded by a pair of annular projections (21). The annular projections (21) are engageable with each other to provide a seal there- between when the head (14) is displaced toward the fixed optical unit (13). The annular projections (21) are prefer- ably made of a cushioning material in which instance they also serve as a cushioning or shock-absorbing member. (Fig. 1)
Goto Shoji
Kawamura Ichiro
Momoo Kazuo
Naoki Goro
Yamamoto Hiroshi
Gowling Lafleur Henderson Llp
Matsushita Electric Industrial Co. Ltd.
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