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. 07, 1979
Filed:
Jul. 25, 1977
Applicant:
Inventor:
Norio Kokaji, Tokyo, JP;
Assignee:
Iwatsu Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G01D / ;
U.S. Cl.
CPC ...
346 741 ; 358301 ;
Abstract
Disclosed is a method and apparatus for carrying out Magnetography utilizing the relationship between half-tones of a picture and the spatial recording density on a magnetic recording material. The picture signal is converted into an electrical signal, whose frequency corresponds to the half-tones of the picture and results in the variation of the spatial recording density so that the naturalness of the half-tones of the picture is successfully preserved.