Lubricant Monitoring Device
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
Studies clearly show that many aspects of mechanical reliability of magnetic recording disks are greatly improved by increasing the lubricant quantity on the disk surface. Disks with low levels of lubricant, or no lubricant, do not meet reliability objectives. Triboelectric Measurements of Lubricated Disks Many triboelectric measurements have consistently shown that when the head contacts a lubricated disk, positive current is transferred to ground through the grounded head. On a delubed, or unlubed disk that is very clean, there is actually a small amount of negative current transfer to ground. The triboelectric current obtained is generated by the mechanical rubbing of the slider material against a data disk. A probe larger than a data head can measure the total area of the disk in fewer revolutions.