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:
Apr. 13, 1993
Filed:
Mar. 13, 1991
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A magnetic head device includes a magnetic head having a sliding surface on which a magnetic tape slides. The sliding surface has a magnetic gap formed on the vertex portion thereof in a manner to allow the magnetic gap itself to record or reproduce information signal on or from the magnetic tape. Defining that .alpha. is an angle formed between a tangent drawn at the vertex portion of the sliding surface and a tangent drawn at the end portion of the sliding surface, .beta. is an angle formed between the inflow direction of the magnetic tape to the sliding surface and the tangent drawn at the vertex portion of the sliding surface and T is tension applied on the magnetic tape per unit width, the form of the magnetic head and the location and tension of the magnetic tape are arranged so that a parameter value obtained by an equation of T.times.sin (.beta.-.alpha.) is in the range of 0.02 gf/mm to 0.15 gf/mm.