Thomson-csf

Compagnie Europeenne De Composants Electroniques

Claude Bussac

Paul-Louis Meunier

Jean-Marc Coutellier

Francois Maurice

Maurice Penot

Alain Penot

A method of making a multitrack head consisting in making a first network of grooves in a block of ferrite, filling the grooves with glass, planing down the surface, making a second network of grooves in a second block of ferrite, bonding these two blocks, trueing the base of the first block, depositing poles and making the winding wires go through.

Method for making a multitrack head

A method for fabricating magnetic recording/reading heads. A substrate made of magnetic material is provided with a groove of a predetermined width. The surface of the substrate bearing the groove becomes the active face for the magnetic head. The face of the substrate having the groove is ground, and then filled with a non-magnetic material to form a gap. The filling causes the non-magnetic material to jut out of the groove. The material which juts out is ground off until the level of the substance is reached.

Method for the fabrication of a magnetic recording/reading head from a

Growing community of inventors

Ris Orangis, France

Claude Bussac