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:
Feb. 11, 1997
Filed:
Jul. 20, 1994
Takaaki Maegawa, Sakurai, JP;
Akio Kuroe, Katano, JP;
Taizou Hamada, Katano, JP;
Hiroshi Kanchiku, Settsu, JP;
Abstract
A magnetic recording/reproducing apparatus according to the present invention includes: a fixed cylinder; a rotary cylinder rotatably supported by the fixed cylinder, the rotary cylinder including a disk-shaped magnet in which first areas having a first pole and second areas having a second pole opposite to the first pole are alternately arranged; and a head chip attached to the rotary cylinder, wherein the fixed cylinder has a stator coil for generating a magnetic force between the stator coil and the disk-shaped magnet, thereby rotating the rotary cylinder, and the head chip is placed on the rotary cylinder so that a phase angle .theta. between a virtual plane including a center of a head gap of the head chip and a rotation axis of the rotary cylinder and one of two polar boundary planes sandwiching the area where the virtual plane traverses satisfies 0.4.alpha..ltoreq..theta..ltoreq.0.6.alpha., where a central angle of the area is .alpha..