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:
Aug. 08, 1995
Filed:
Mar. 01, 1994
Applicant:
Inventors:
Assignee:
Kyodo Printing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
4286 / ; 428900 ; 428913 ; 235493 ; 360-2 ; 369 14 ; 369 15 ; 347221 ; 283 55 ; 283 601 ; 283 602 ; 283 82 ; 283900 ; 283901 ; 283904 ;
Abstract
This invention provides a magnetic recording medium wherein visible patterns can be written, in which a heat sensitive layer is formed on a magnetic recording layer and a metallic thin layer is formed on said heat sensitive layer. The metallic thin layer of said magnetic recording medium can by roughed by using a material containing minute particles to form a roughed heat sensitive layer on the magnetic recording layer and then depositing the metallic thin layer on said heat sensitive layer. In using said magnetic recording medium, information corresponding to at least a part of the information recorded in the magnetic recording layer can be written as visible patterns.