Browse Prior Art Database

Visual Media Test

IP.com Disclosure Number: IPCOM000042965D
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Hahn, FW: AUTHOR [+2]

Abstract

An optical flat can be used to observe and record the surface contact of a magnetic medium. Water is placed between the medium sample and on optical flat and allowed to evaporate. The resulting surface contact can then be observed through the optical flat. The surface contact of magnetic media, such as a tape, can be observed and recorded in a visual test using an optical flat. In the procedure, the optical flat and the sample must be clean of debris and fingerprints. If a flexible medium is used, the sample with the magnetic coating faced upward is placed onto a glass plate. A small amount of water and a surfactant mixture is placed onto the sample. The optical flat is then placed onto the water, and the water is allowed to evaporate. A microscope can then be used to focus onto the surface of the sample.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Visual Media Test

An optical flat can be used to observe and record the surface contact of a magnetic medium. Water is placed between the medium sample and on optical flat and allowed to evaporate. The resulting surface contact can then be observed through the optical flat. The surface contact of magnetic media, such as a tape, can be observed and recorded in a visual test using an optical flat. In the procedure, the optical flat and the sample must be clean of debris and fingerprints. If a flexible medium is used, the sample with the magnetic coating faced upward is placed onto a glass plate. A small amount of water and a surfactant mixture is placed onto the sample. The optical flat is then placed onto the water, and the water is allowed to evaporate. A microscope can then be used to focus onto the surface of the sample. Photographs can be taken to record the surface contact of the magnetic medium. The contact is an indication of the interface that occurs between the magnetic medium and a magnetic head, for instance. A green filter could be used to give more detail to the photograph.

1