Browse Prior Art Database

Method of Lubricating the Surface of Organic Magnetic Storage Media

IP.com Disclosure Number: IPCOM000043641D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Kraus, G: AUTHOR [+3]

Abstract

A method is proposed which improves the lubrication of plastic materials filled with magnetic particles. The proposed method ensures that the lubricant permanently adheres to the surface of the medium down to a depth of about 5 to 50 nm. In addition, the distribution of the lubricant is improved and interactions between magnetic head and lubricated magnetic disk are reduced. In conventional methods for lubricant application, the lubricant is sprayed on and subsequently wiped off. In most cases, the lubricant is chosen primarily for its lubricating properties rather than for its distribution on and adhesion to the storage medium. A serious problem arises from the energetic heterogeneity of the surface of the storage medium, i.e.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 64% of the total text.

Page 1 of 1

Method of Lubricating the Surface of Organic Magnetic Storage Media

A method is proposed which improves the lubrication of plastic materials filled with magnetic particles. The proposed method ensures that the lubricant permanently adheres to the surface of the medium down to a depth of about 5 to 50 nm. In addition, the distribution of the lubricant is improved and interactions between magnetic head and lubricated magnetic disk are reduced. In conventional methods for lubricant application, the lubricant is sprayed on and subsequently wiped off. In most cases, the lubricant is chosen primarily for its lubricating properties rather than for its distribution on and adhesion to the storage medium. A serious problem arises from the energetic heterogeneity of the surface of the storage medium, i.e., magnetic particles with a high surface tension are partially embedded in a polymer with a low surface tension. This renders the application of the lubricant problematical and causes variations in the long-term stability of the head/disk system. Therefore, it is desirable to have a lubricating method which ensures a more homogeneous distribution of the lubricant on the magnetic coating, without changing the lubricating properties. The proposed method permits the lubricant to become durably embedded in the storage medium. For this purpose, the surface of the storage medium is thermally treated at temperatures above 150OEC in the presence of the respective lubricant. Accordi...