Basf Aktiengesellschaft

Norbert Holl

Dietrich Gruehn

Hubert Fehrenbach

Joachim Hack

Kurt Zwintzscher

Bernhard Lenz

Hartmut Hibst

Peter Rudolf

Werner Grau

Guenter Heil

Arend Werner

Helmut Lewin

Clifton Zimmermann

Michael Hitzfeld

Heinrich Mannsperger

Horst Hoffmann

Rolf Schwan

Juergen Wippel

A measuring element which senses the running of the solid of rotation is connected to the actual value input of a controller whose output signal is connected to a control element which acts upon a bearing which is adjustable perpendicularly to the axis.

Arrangement for the dynamic compensation of eccentricities of solids of

Apparatus for washing out photopolymer printing plates by means of

Disk-shaped magnetic recording media essentially consisting of a flexible substrate, a thin ferromagnetic metal film applied to one or both sides and a protective or antifriction layer present on this metal film and essentially consisting of carbon, a process for the production of these recording media and information stores containing these recording media.

Disk-shaped magnetic recording media, their production and information

The blanks punched out from a film web and folded to form the jacket are then heated for a short time and cooled again in order to eliminate stresses in the jacket material which give rise to deformations and are also produced by the action of heat during processing of the material.

Jacket for a flexible magnetic disk and production of the jacket

In a protective jacket for disk-shaped recording media, for example magnetic films, fixed magnetic disks, grammophone disks or video disks, the fleece covering in the jacket is fastened close to the outer edges of the jacket and close to the contour lines of the openings by means of heat welded points a short distance apart and in the region inbetween at a distance apart which is several times as large. As a result of the cushions thus formed, a more advantageous cleaning effect is achieved.

Protective jacket for a disk-shaped recording medium

The jacket blanks punched out from a film web are folded to give jackets and then closed by spot welding with the aid of a wavy resistance belt, the welding temperature being produced for a short time by means of a current pulse in the resistance belt.

Production of jackets for flexible magnetic disks, and apparatus for

A protective jacket, in particular for recording media, preferably magnetic films, is provided with at least one stiffened region in the immediate vicinity of the read/write area, thus permitting more thorough cleaning of the recording medium and smoother running of the latter. Stiffened region(s) can be produced economically by printing on strips of ink.

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Battenberg, Germany

Norbert Holl