Floppy disk drive system with improved record/playback heads

Details Floppy disk drive system with improved record/playback heads Floppy disk drive system with improved record/playback heads

1988-11-21

1990-03-27

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360104, 360103, G11B 548

Patent

active

049125826

ABSTRACT:
A floppy disk drive system for double-sided recording and playback having first and second heads positioned to hold a disk therebetween is provided. The first and second heads each have a read/write gap and each have a contacting plane for contacting the disk. Each such contacting plane has an inner edge position toward the center of the disk and an outer edge positioned toward the outer circumference of the disk. The gap of the first head is closer to the outer circumference of the disk than the gap of the second head when the heads are assembled in facing relation. The distance between the center of the inner edge of the contacting plane of the first head and the center of the read/write gap of the second head is about 0.6 mm or less. The contacting plane of the second head may be larger than that of the first head, said enlargement being in the direction of the inner circumference of the disk. At least one of the heads may have the two inner corners thereof chamfered by about C 0.5 or more and the corresponding corners of the contacting plane may be smoothly rounded. The contacting plane of the first head may be larger than that of the second head, said enlargement being in the direction of the outer circumference of the disk.

REFERENCES:
patent: 3855625 (1974-12-01), Garnier et al.
patent: 4191980 (1980-05-01), King et al.
patent: 4263630 (1981-04-01), Pierson
patent: 4285019 (1981-08-01), Scott et al.
patent: 4320426 (1982-03-01), Thompson
patent: 4625249 (1986-11-01), Iwata
patent: 4651243 (1987-03-01), Daste et al.

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