U.S. Philips Corporation

Arnold Broese Van Groenou

Victor Zieren

Mathijs De Jongh

Peter Lasinski

Leo-Franciscus M Van Oorschot

Freddy Roozeboom

Jacobus J Ruigrok

Franciscus W Dirne

Franciscus W A Dirne

Magnetic head having a head face ( ) and comprising a head structure composed of thin layers and provided with a transducing element (E ), in which different materials occurring in different areas are present in the head face. The head face is provided with a first layer ( ) of a material which is more sensitive to corrosion than other materials in the head face, and the first layer is provided with a second layer ( ) of a wear-resistant material which is more insensitive to corrosion than the material of the first layer. The second layer constitutes a contact face ( ) for cooperation with a magnetic tape ( ).

Magnetic head having a wear-resistant layer, and method of manufacturing such a magnetic head

A magnetic head having a head face (5) and a layer structure with a transducing element (E11) and a transducing gap terminating in the head face. At the area of the transducing gap and at both sides of the transducing gap the head face is coated with a layer (31) substantially comprising Cr.sub.2 O.sub.3 for forming a contact face (33) for cooperation with a record carrier. The layer substantially comprising Cr.sub.2 O.sub.3 having a thickness in the range between 10 and 100 nm is preferably provided by reactive RF sputtering.

Magnetic head having a wear resistant layer substantially comprising

Magnetic head unit comprising a magnetic head secured in a housing and having a magnetic head structure provided with a head face and at least one transducing gap terminating in the head face. A wear- resistant layer (31 ) having at least one alignment mark (35, 36, 37) occupying a defined position with respect to the transducing gap is provided on the head face.

Magnetic head with wear resistant layer having alignment mark, and

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Waalre, Netherlands

Arnold Broese Van Groenou