Test disk having fluorocarbon resin asperities for magnetic disk drive component testing
First Claim
1. A rigid transparent glass disk for use in testing the mechanical response characteristics of a slider carrying a transducer in a magnetic disk memory unit and to replace the unit'"'"'s magnetic recording disk during said testing, said disk having projections thereon formed of a fluorocarbon resin with modifiers, and having a preselected footprint shape and size and a preselected projection height above the surrounding surface;
- the height selected by means of burnishing the top of the projection with a burnishing slider flying at said preselected height.
8 Assignments
0 Petitions
Accused Products
Abstract
A disk for testing the sliders and their supports used in rigid magnetic disk drives has at least one asperity formed of a fluorocarbon resin. Such a test disk when mounted on a spindle and rotated allows testing the mechanical performance of the sliders carrying the data transducing heads in a disk memory by flying the sliders to be tested on the test disk and observing their performance when flying over the resin asperity. A method for producing the asperity involves depositing a drop of a fluorocarbon resin solution on the area of the disk wherever an asperity is desired, drying the solution to leave a small mound of the resin where the drop was deposited, and the no curing the resin by baking. The height of an asperity can be varied by machining or by varying the concentration of the fluorocarbon resin in the solution.
30 Citations
8 Claims
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1. A rigid transparent glass disk for use in testing the mechanical response characteristics of a slider carrying a transducer in a magnetic disk memory unit and to replace the unit'"'"'s magnetic recording disk during said testing, said disk having projections thereon formed of a fluorocarbon resin with modifiers, and having a preselected footprint shape and size and a preselected projection height above the surrounding surface;
- the height selected by means of burnishing the top of the projection with a burnishing slider flying at said preselected height.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
Specification