Article surveillance protection of flexible magnetic computer da

Details Article surveillance protection of flexible magnetic computer da Article surveillance protection of flexible magnetic computer da

1989-08-24

1991-04-30

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record medium

Disk

360133, 360 60, G11B 582, G11B 2303, G11B 1504

Patent

active

050123807

ABSTRACT:
A flexible magnetic data storage disk with a ferromagnetic surveillance ring-shaped marker integrally bonded to the disk substrate around the central aperture. A series of slits are formed in the disk substrate under the marker to serve as "tear initiators" if a user attempts to remove the surveillance marker thus rendering the disk unusable and thereby protecting the data on the disk from unauthorized removal from a secure area.

REFERENCES:
patent: 3665449 (1972-05-01), Elder et al.
patent: 3747086 (1973-07-01), Peterson
patent: 3820104 (1974-06-01), Fearon
patent: 4074249 (1978-02-01), Minasy
patent: 4425999 (1984-01-01), MacDonald et al.
patent: 4553136 (1985-11-01), Anderson, III et al.
patent: 4710752 (1987-12-01), Cordery
patent: 4794470 (1988-12-01), Lauffenburger et al.
patent: 4800458 (1989-01-01), Okita
patent: 4910625 (1990-03-01), Albrecht et al.

Affiliated with

Also associated with

Rating

Article surveillance protection of flexible magnetic computer da does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Article surveillance protection of flexible magnetic computer da, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Article surveillance protection of flexible magnetic computer da will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-645609