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:
Dec. 26, 1989
Filed:
Sep. 08, 1987
Yasushi Kikuchi, Kanagawa, JP;
Hideki Matsuzawa, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A method of cleaning a magnetic disk comprises the steps of rotating a magnetic disk housed in a cage, feeding a gas into the case, and at the same time sucking the gas from the inside of the case via window openings formed in upper and lower surfaces of the case, whereby the efficiency of discharge of dust from the case is improved by interaction of the gas feeding with the gas suction. An apparatus for cleaning a magnetic disk comprises a rotation shaft for rotating a magnetic disk housed in a case. The rotation shaft is provided with a gas passageway in the inside, and a gas discharging hole which is formed near a leading end portion to communicate with the gas passageway and which is opened inward of the case. A gas feeder is disposed for feeding gas into the gas passageway, and two gas suction devices for sucking gas from the case in the course of rotation of the magnetic disk are disposed to face respectively window openings formed in upper and lower surfaces of the case.