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:
Jun. 16, 1992
Filed:
Oct. 18, 1991
Applicant:
Inventors:
Hideaki Takeuchi, Kanagawa, JP;
Junji Nakada, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
427129 ; 118 59 ; 118 65 ; 118 67 ; 118 69 ; 118718 ; 118720 ; 118722 ; 118724 ; 118731 ; 427130 ; 427131 ; 427132 ; 427251 ; 4272557 ; 427322 ; 427328 ; 4273982 ;
Abstract
A method and apparatus for manufacturing a magnetic recording medium at high efficiency. A flexible web is passed around first and second cooling cans. The web is reversed between the two cans so that the same surface of the web is directed to the outside on both cans. A single evaporation source produces an evaporated stream of magnetic film forming material which impinges on the web as it passes around both cans, thereby to form two films of the evaporated magnetic material on the same surface of the web.