A recording and/or reproducing device which utilizes a round flexible foil-type record of magnetizable material, for recording or reproducing video and/or audio signal on the foil-type record through a transducer arrangement while the record is rotated at high speed at its center and concurrently hovers above a rotation-induced air cushion. The recording and/or reproducing device is provided with a rotatable stabilization plate intermediate between the record and the stationary plate or table for rotation about its center. The stabilization plate may be rotated in the same direction as the record or in the opposite direction relative to the record and at the same speed as the record or at different speeds relative to the record.
Disclosed is a novel rigid flying head presenting a "compound-foil" face to a passing flexible record segment which is induced to automatically assume a prescribed, relatively controlled "approach zone" and associated constant spacing relative to the head face.
4330804 - Flying head with foil support - Owned by Burroughs Corporation (Detroit, MI) [*] Notice:The portion of the term of this patent subsequent to July 31, 1996 has been disclaimed.
Disclosed is a novel rigid flying head supported on a prescribed foil to present a "compound-foil" face to a passing flexible record segment, the segment being thus induced to automatically assume a prescribed, relatively controlled "approach zone" and associated constant spacing relative to the head face.
An apparatus is provided for recording and/or reading information on the upper major surface of a flexible information storage disc. The apparatus which may be in the form of a cartridge is comprised of a body having a spring-flexible cylindrical surface wherein the flexible disc is rotated over the cylindrical surface with the lower major surface of such disc facing the cylindrical surface so that rotation of the disc causes the disc to conform to the curvature of the body. A recording and/or playback head is selectively passed over the upper major surface of the disc for reading and/or writing information on the disc as it rotates, said cylindrical surface being capable of flexing under pressure of said head.
An apparatus is provided for recording and/or reading information on the upper major surface of a flexible information storage disc. The apparatus which may be in the form of a cartridge is comprised of a rigid body having a cylindrical surface with an opening wherein the flexible disc is rotated over the cylindrical surface with the lower major surface of such disc facing the cylindrical surface so that rotation of the disc causes the disc to conform to the curvature of the body. A recording and/or playback head located over the opening is selectively passed over the upper major surface of the disc for reading and/or writing information on the disc as it rotates.
A recording apparatus of a type employing a thin pliant disc of recording material with a transducer disposed to advance and retreat across the disc in recording relation thereto employs a drive construction for rotating the disc and a base member having a generally smooth crowned surface underlying the disc. The crowned surface includes a radially extending crest defined by flanking portions sloping away from the crest region formed therebetween. The crest extends linearly across the surface (preferably on a radius or diameter) of the disc. Means for rotating the disc relative to the underlying base member in surface following relation causes the recording surface of the disc to be subjected to tensioning forces derived from the conjoint change in angular direction of the disc and the change in the plane of movement of the disc as it passes across the crest region thereby smoothing uneven or irregular portions of the recording surface passing beneath the transducer. In addition, a supplemental supply of suitable gas, such as air, is blown upwardly against the undersurface of the disc along a radius so as to space the disc uniformly from the base member to provide substantially uniform head-to-disc contact.
