Magnetic marker and process for manufacturing a roll having a pl

Details Magnetic marker and process for manufacturing a roll having a pl Magnetic marker and process for manufacturing a roll having a pl

1996-04-04

1999-06-15

Epstein, Henry F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428458, 428900, H01F 100

Patent

active

059120754

ABSTRACT:
A magnetic marker which comprises a flexible organic polymer substrate having an anisotropic thermal shrinking property and a soft magnetic thin film having uniaxial magnetic anisotropy. The angle formed between the direction in which the organic polymer substrate has the highest degree of thermal shrinkage and the direction of magnetic easy axis in the soft magnetic thin film is in the range from 50.degree. to 90.degree.. The marker is a thin film of a simple structure, yet exhibits satisfactory magnetic characteristics. A roll having a plurality of magnetic markers, each comprising an organic polymer substrate and a soft magnetic thin film formed transversely on the surface, can be manufactured by a process relying upon the combination of (i) a roll coater method and (ii) a sputtering technique. In the process, the organic polymer substrate is set and continuously transported such that the direction in which the organic polymer substrate experiences the highest degree of thermal shrinkage is not greater than 40.degree. with respect to the direction of its travel. Furthermore, the thickness of the soft magnetic thin film that is deposited per unit of the cathode as the result of a single pass of the organic polymer substrate over the cathode does not exceed 0.4 .mu.m. The process is capable of continuous production of magnetic markers having satisfactory magnetic characteristics and advantageously enables easy manufacture of a roll having a plurality of such magnetic markers arranged transversely thereon.

REFERENCES:
patent: 5083112 (1992-01-01), Piotrowski et al.
patent: 5181020 (1993-01-01), Furukawa et al.
patent: 5405702 (1995-04-01), Piotrowski et al.

Affiliated with

Also associated with

Rating

Magnetic marker and process for manufacturing a roll having a pl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic marker and process for manufacturing a roll having a pl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic marker and process for manufacturing a roll having a pl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-401470