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:
Jun. 27, 2000
Filed:
Dec. 02, 1997
Charles Partee, Boulder, CO (US);
Masushita-Koto Buki Electronics Industries, Ltd., Ehime, JP;
Abstract
A method of forming a top pole member in a magnetic recording head having a bottom pole member, an insulating layer on said bottom pole member, and a shared pole member over the bottom pole member on a ceramic substrate comprises the steps of depositing a ferromagnetic material on the shared pole portion forming a shared pole tip; depositing an insulating layer on and over the shared pole and the shared pole tip; mechanically forming a planar insulating layer surface over the shared pole member exposing the shared pole tip flush with said planar surface; recessing the pole tip below said planar surface; depositing a gap layer over the planar surface of the insulating layer and the recessed pole tip. This layer forms a channel over the recessed pole tip. The top pole member is then deposited into and over the channel over the recessed pole tip. The top pole tip thus formed is automatically centered and aligned with the shared pole tip without the necessity of ion beam milling.