Non-destructive method and apparatus using DC erase field for ma

Details Non-destructive method and apparatus using DC erase field for ma Non-destructive method and apparatus using DC erase field for ma

1988-08-25

1989-07-11

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

360 25, 369 58, G01R 3312, G01N 2772, G11B 502, G11B 2734

Patent

active

048475580

ABSTRACT:
This invention relates to an instrument or device capable of performing a non-destructive evaluation of the major magnetic properties of a recording disc member that determines the basic digital recording performance of said member. These measurements include the non-destructive evaluation of parameters including coercive force and remanence-thickness product of the recording member as a function of the circumference and/or the radius of the recording member. These parameters determine the signal amplitude as well as the frequency response of the disc member.

REFERENCES:
patent: 3535622 (1970-10-01), Cannon et al.
patent: 3562635 (1971-02-01), Parker
patent: 3812529 (1972-08-01), Yoichi

Affiliated with

Also associated with

Rating

Non-destructive method and apparatus using DC erase field for ma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-destructive method and apparatus using DC erase field for ma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-destructive method and apparatus using DC erase field for ma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-439277