Title:
【発明の名称】磁気ヘッドの斉合性を試験し調整する方法
Document Type and Number:
Japanese Patent JP2779189
Kind Code:
B2
Abstract:
A simple and precise method of controlling the gap position (obliqueness and height) of magnetic recording installations with n tracks (n=1, 2 . . . ) is obtained by subdividing at least one track of a recording tape into two auxiliary tracks in accordance with the given recording format, which auxiliary tracks are recorded at the center to center track distance of d, using a special head with correct gap position. The recording wave length and magnetization are preferably equal due to the width of the auxiliary tracks being equal. The auxiliary track 1 is recorded continuously while the auxilary track 2 is recorded at time intervals with a signal of equal magnitude but with different phase angles. Each time interval has a phase angle associated with it. The magnitude of correction of the gap required can easily be determined from a graph showing the voltage level difference measured at two different phase positions. The oblique angle of the gap may be measured and corrected by these means and in one variation of the invention the height adjustment of the head can also be measured and corrected.
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Inventors:
BERUNAA JINGUHOFU
YOHAN DANKERURU
YOHAN DANKERURU
Application Number:
JP30618588A
Publication Date:
July 23, 1998
Filing Date:
December 05, 1988
Export Citation:
Assignee:
EMUTETSUKU MAGUNETEITSUKUSU GMBH
International Classes:
G11B5/56; G11B5/455; (IPC1-7): G11B5/455
Attorney, Agent or Firm:
Tajiro Taiji