Browse Prior Art Database

Air Flow Control for Optical Disk Drive

IP.com Disclosure Number: IPCOM000113341D
Original Publication Date: 1994-Aug-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Hatanaka, R: AUTHOR

Abstract

Disclosed is an anti-contamination system for the optical disk drive that is controlling the air flow path adequately.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Air Flow Control for Optical Disk Drive

      Disclosed is an anti-contamination system for the optical disk
drive that is controlling the air flow path adequately.

      Generally speaking, breathing out the air by cooling fan from
the system is more effective cooling than breathing in.  But, for the
optical disk drive with cooling fan behind the system, the drive will
breathe the air with the contamination from the front side of the
drive.  For the optical disk drive, the contamination is harmful to
the optical components (optical disk, the objective lens on the
actuator, etc.).

      This system aims to prevent the rotating optical disk and the
objective lens on the actuator from contamination coming into the
drive with high cooling efficiency.

      The Figure shows the construction of this system.  The air
comes from the port (1) through an air filter (2) at the bottom of
the drive around the spindle motor (3).  Then the air goes through
under the rotating optical disk (4) that causes the centrifugal air
flow, with cooling the actuator (5).  The air goes over the
electrical modules (6), then be drained by the cooling fan (7).  The
shutter (8) prevent the contamination from coming through the
cartridge insertion slot.

      The air filter can be easily exchanged from the front side of
the system when the air filter comes dirty.  It is convenient for the
maintenance when the drive is built into the system box.