Guide roller construction for magnetic tape recording/reproducin

Details Guide roller construction for magnetic tape recording/reproducin Guide roller construction for magnetic tape recording/reproducin

1977-12-22

1979-04-24

Schacher, Richard A.

Advancing material of indeterminate length

Passive guide

29120, 226192, B65H 2304

Patent

active

041507738

ABSTRACT:
To decrease forces acting on the edge of magnetic tape, typically wide tape (25.4 mm-1"), and thus prevent damage to the edge, the surface of deflection guide rollers is formed to be resilient and permitting axial deflection, but returning to the nominal radial position when not deflected or deformed by axial forces applied thereto by the magnetic tape. The surface may be formed by bristles extending radially, ring-shaped foam strips, ball bearing-supported rings in which the bearings have slight axial play, or resiliently deflectable sheet metal rings, the axial restoring forces of ball bearing-supported rings being provided by centrifugal forces tending to align the bearing in a plane exactly transversely to the axis of rotation. The forces then acting between the magnetic tape and diametrically projecting guide flanges are reduced since slight axial deflection, in the order of about 0.001 mm, in permitted.

REFERENCES:
patent: 3288338 (1966-11-01), Morrow
patent: 3508695 (1970-04-01), Werner
patent: 3840224 (1974-10-01), Zawiski

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