Optical disk drive including dust-proofing annular projections

Details Optical disk drive including dust-proofing annular projections Optical disk drive including dust-proofing annular projections

1991-05-06

1993-11-09

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4414, G11B 712

Patent

active

052609294

ABSTRACT:
An optical disk drive of the type having a fixed optical unit having a light transmitting hole from which a laser beam is emitted, and a movable head having a light receiving hole from which the laser beam is received, wherein the respective outer edges of the light emitting and receiving holes are surrounded by a pair of annular projections. The annular projections are engageable with each other to provide a seal therebetween when the head is displaced toward the fixed optical unit. The annular projections are preferably made of a cushioning material in which instance they also serve as a cushioning or shock-absorbing member.

REFERENCES:
patent: 4554653 (1985-11-01), Malissin et al.
patent: 4958335 (1990-09-01), Takeda et al.

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