Teldix Gmbh

Emtec Magnetics Gmbh

Hans-Bertram Wiegemann

Klaus U Baron

Helmut Jakusch

Joachim Kaiser

Hansj&ouml;rg Traub

Peter Stehle

Jakob Kranz

A magnetic recording medium which consists of at least two layers cast one on top of the other is described, the lower layer containing acicular magnetic pigments having a field strength of 5-40 kA/m and a magnetization of 20-70 nTm,/g and the upper layer containing a high-density metal powder dispersion. After application of the layers, the magnetic recording medium is subjected to a magnetic disorientation treatment while the layers are in the wet state, so that said recording medium has virtually no magnetic and mechanical anisotropy. The magnetic recording medium produced in this manner is particularly suitable for floppy disks having a high storage capacity of substantially more than 100 megabytes.

Magnetic recording medium having a high recording density and its production

Laser rotation rate sensor

In a gas laser composed of a capillary tube made of electrically nonconductive material and presenting a capillary passage, a reservoir tank whose interior is in communication with the passage, the tank including a cylindrical portion coaxially surrounding the capillary tube and axial end portions via which the tube is connected to the tank in a manner to seal the interior of the tank, a mass of active laser gas filling the interior of the reservoir tank and the capillary passage, a cathode disposed in the interior of the tank, a counterelectrode in communication with the capillary passage, and optical elements sealing the ends of the capillary passage, the capillary tube is symmetrical with respect to a plane perpendicular to the axis of the capillary passage and midway between the ends thereof, the counterelectrode is composed of two anodes each disposed at a respective axial end of the capillary tube, communication between the capillary passage and the interior of the tank is provided by an opening passing through the capillary tube, and a radially stiff, axially mobile mechanical connection is provided between at least one portion of the capillary tube at at least one portion of the tank.

Gas laser

Growing community of inventors

Schriesheim, Germany

Hans-Bertram Wiegemann