Air shroud for data storage disks

Details Air shroud for data storage disks Air shroud for data storage disks

1984-07-06

1986-04-15

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

360 99, 360133, 369258, G11B 2504, G11B 2302

Patent

active

045832137

ABSTRACT:
An air shroud is disclosed for reducing vibration of the disk storage medium and controlling contamination in the environment above the disk in an optical disk data recording system. The shroud is placed over the rotating disk and pressurized air is forced into the center of the air space between the shroud and the disk where it moves from the center to the outside edge in a laminar flow. The shroud includes a circular plate with a slot for allowing the laser read/write beam to shine through the shroud and contact the surface of the disk for reading and writing data on the disk. An air duct is mounted around a center hole of the circular plate to distribute the pressurized air into the air space and a flange is mounted on the outer edge of the circular plate to reduce turbulence in the air flowing across the disk.

REFERENCES:
patent: 3740735 (1973-06-01), Gabor
patent: 4002826 (1977-01-01), Iemenschot
patent: 4068851 (1978-01-01), Yamamura
patent: 4308041 (1981-12-01), Ellis et al.
patent: 4381528 (1983-04-01), Fujioka

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