Browse Prior Art Database

Magnetic Head With Retractable R/W Element

IP.com Disclosure Number: IPCOM000044685D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Elsner, G: AUTHOR [+3]

Abstract

A magnetic transducing system is suggested where the read/write (R/W) element is partly mechanically decoupled from the slider. For that purpose, the R/W element is provided on a membrane at the slider, which membrane is turned outwards in flight. The result is a lower flight height for the tiny R/W element, whereas the big slider remains in a relatively high flight height, with the advantage of a reduced wear of the interface slider/disk in flight operation. Present-day R/W heads of magnetic disk storages are applied on the back of much bigger sliders.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 52% of the total text.

Page 1 of 2

Magnetic Head With Retractable R/W Element

A magnetic transducing system is suggested where the read/write (R/W) element is partly mechanically decoupled from the slider. For that purpose, the R/W element is provided on a membrane at the slider, which membrane is turned outwards in flight. The result is a lower flight height for the tiny R/W element, whereas the big slider remains in a relatively high flight height, with the advantage of a reduced wear of the interface slider/disk in flight operation. Present-day R/W heads of magnetic disk storages are applied on the back of much bigger sliders. Upon the start of the magnetic disk, such sliders initially slide on the disk, take off with the number of revolutions per second increasing, and finally reach a flight height which depends on the number of revolutions per second and which, at the same time, represents the distance of the R/W element from the disk. The advantage of this arrangement is that the vertical run-out of the disk which is a multiple of the slider flight height is automatically compensated. The slider simply follows the ups and downs of the disk, provided they are not too short-waved. However, this arrangement with rigid coupling between R/W element and slider has disadvantages. The slider proposed here is characterized by the exclusion of the rigid mechanical coupling of R/W element and slider.

The big slider remains in a relatively great flight height. The relatively small R/W element is arranged on a membrane, is "extended" after the take-off of the slider, and moves to a...