The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 1991
Filed:
Aug. 05, 1988
Applicant:
Inventors:
Masaaki Sakurai, Utsunomiya, JP;
Mitsuru Yoda, Tokyo, JP;
Assignee:
The Nippon Signal Co., Ltd., , JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428694 ; 360131 ; 428900 ;
Abstract
A visual magnetic recording medium includes a magnetic-field sensitive display web layer united with one surface of a transparent substrate and having a multiplicity of microcapsules each containing a multitude of tiny particles, and a magnetic recording layer united with the display web layer. The tiny particles are responsive to a magnetic field established across the magnetic recording layer and produce an image on the display web layer which is visual through the transparent substrate. A method of making such visual magnetic recording medium is also disclosed.