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:
Jan. 17, 1995
Filed:
Jun. 28, 1993
Kiyoshi Uchida, Yamatotakada, JP;
Norio Miyataka, Kobe, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A magneto-optical disk driving apparatus of the magnetic field modulated recording type is generally provided with a magnetic biasing apparatus, which generates a magnetic field required to record or erase information signals on or from a magneto-optic recording medium. The magnetic biasing apparatus includes a magnetic circuit capable of recording or erasing the information signals on or from the magneto-optical recording medium and a slide member bonded to an open end of the magnetic circuit. The slide member is made up of a crosslinked setting resin, one or two lubricants contained in the setting resin, and a filler embedded in the setting resin. One of the lubricants has a linear molecular structure, whereas the other has a branched molecular structure. The filler is made up of a large number of porous particulates having a specific surface of from 100 to 1000 m.sup.2 /g (measured in accordance with the BET equation) and a large number of whiskers having a diameter in the order of submicrons or less.