Optical tool for aligning transducer head assemblies

Details Optical tool for aligning transducer head assemblies Optical tool for aligning transducer head assemblies

1984-04-09

1986-12-16

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

33180R, 356399, 360109, G11B 5012

Patent

active

046301500

ABSTRACT:
An optical tool is disclosed which permits a sequence of aligned transducer gaps to be positioned parallel to the axis of a disk file. The tool is surfaced with transparent material, has a thickness the same as the disk or disks of a disk stack being simulated and presents an etched alignment grid at the interface surface between transducer and tool. The virtually common plane of the transducer gap and etched grid substantially eliminates parallax and the unfilled etched grid permits the gap to be seen, whether aligned with the transparent unetched surface or the translucent etched surface portion. The use of inclined mirrored surfaces underlying the grid permits alignment to be effected using a bright field microscope and observing from a direction rotated 90 degrees from a line perpendicular to the grid to enable alignment of transducer gaps confronting one another at opposite sides of the disk.

REFERENCES:
patent: 2247113 (1941-06-01), Benford
patent: 3781489 (1973-12-01), Brand
patent: 3914793 (1975-10-01), Burnham
patent: 4537509 (1985-08-01), Kronfeld

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