Magnetic tape and method for manufacturing the same

Details Magnetic tape and method for manufacturing the same Magnetic tape and method for manufacturing the same

2007-09-11

2007-09-11

Chaney, Carol (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Binder media

C428S845000, C083S056000, C360S134000

Reexamination Certificate

active

10790313

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.

REFERENCES:
patent: 5423239 (1995-06-01), Sakai et al.
patent: 5827599 (1998-10-01), Murao et al.
patent: 6103340 (2000-08-01), Kubo et al.
patent: 6627334 (2003-09-01), Iida et al.
patent: 7045228 (2006-05-01), Kanazawa et al.
patent: 09-153212 (1997-06-01), None
patent: 11-296839 (1999-10-01), None
JA 11-296839 machine translation.
JA 09-153212 machine translation.

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