Fluid bearing tape scanning drum

Details Fluid bearing tape scanning drum Fluid bearing tape scanning drum

1980-04-11

1983-11-08

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head moving during transducing

Tape record

360129, G11B 510, G11B 560

Patent

active

044145888

ABSTRACT:
A tape scanning assembly including a fixed drum and a coaxially mounted rotating drum defining a gap therebetween, with the tape wrapped in a helical path around the drums and across the gap, the rotating drum being driven to produce a pressurized gas bearing film between the tape and drums, with the bearing film being vented by the gap to tend to produce a variable film thickness gradient on the upstream side of the gap; the assembly is provided with venting means such as relieved portions or grooves on the rotating drum to reduce said gradient and to control the film thickness upstream from the gap.

REFERENCES:
patent: 3840894 (1974-10-01), Arseneault
patent: 3840895 (1974-10-01), Kubo
patent: 3911490 (1975-10-01), Kostin et al.
patent: 3939493 (1976-02-01), Fowler et al.

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