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:
Sep. 11, 2007
Filed:
Mar. 01, 2004
Sadayuki Shoudai, Tokyo, JP;
Tsutomu Kikuchi, Tokyo, JP;
Sadayuki Shoudai, Tokyo, JP;
Tsutomu Kikuchi, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A method for manufacturing a magnetic tape includes the steps of feeding a broad magnetic tape including a broad support formed with a magnetic recording layer on one side thereof and a back coat layer on the other surface thereof to a portion between a disk-like upper blade and a disk-like lower blade overlapping each other and rotating in opposite directions and cutting the broad magnetic tape into magnetic tapes each having a predetermined width, which method for manufacturing a magnetic tape further includes a step of setting a cutting start angle between the disk-like upper blade and the disk-like lower blade overlapping each other and rotating in opposite directions at the time that cutting of the broad magnetic tape fed to a portion between the upper blade and the lower blade by the upper blade and the lower blade is started so that a lower blade side cut surface of the magnetic tape to be formed by cutting the broad magnetic tape includes 40% to 65% of a region formed by cutting the magnetic tape by a breaking force, thereby cutting the broad magnetic tape. According to the above method, it is possible to manufacture a magnetic tape which can minimize an irregular raised and depressed pattern of a cut surface of a magnetic tape.