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Floppy Disk Drive Alignment Method Disclosure Number: IPCOM000060450D
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08

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Eide, JF Hutchings, CD Kirton, AJ Klein, RD Skierka, LW [+details]


A method is described for calibration of an alignment tester having a collet which mounts and spins a disk, having rails to mount and move a head carriage to specified track positions, and having a computer and program to measure movement of the carriage between tracks, by analysis of waveforms read from the disk. A head carriage of unknown head spacing is first mounted on the rails of the fixture. A laser interferometer is now mounted relative to the fixture, in a manner to measure the movement of the carriage. A disk is now installed on the fixture, and the fixture's carriage moving motor is used to position the carriage and its head at a specific disk track. A data pattern is then written on that track.