Josef Schelble

Title: Josef Schelble: Innovator in Magnetic Recording Technology

Introduction

Josef Schelble is a notable inventor based in Munich, Germany. He has made significant contributions to the field of magnetic recording technology. With a total of 2 patents to his name, Schelble's work has advanced the capabilities of magnetic recording mediums.

Latest Patents

Schelble's latest patents include a magnetic recording medium that utilizes a wet-on-wet application process. This process employs a sheet extruder with at least two slot dies. The upper layer of the medium contains metal powders and/or metal powder alloys, while the lower layer consists of magnetic pigments along with conductivity-increasing and/or transparency-reducing additives, preferably carbon black. Both layers exhibit virtually the same rheological properties, resulting in improved conductivity and excellent running behavior, particularly when used as a mirror master tape.

Another patent focuses on the production of a magnetic recording medium through a wet-on-wet application process using an extrusion coater. This method features a unique design where the upper lip of the common outlet orifice of the slot dies is recessed relative to the lower lip. A right parallelepiped magnet is positioned parallel to the non-magnetic substrate, enhancing the medium's mechanical and electroacoustic properties. The uppermost layer contains magnetic pigments with a thickness exceeding 2.0 µm, while the lower layer is non-magnetic and may include conductivity-increasing additives or fillers, with a thickness of less than 0.5 µm when dry.

Career Highlights

Josef Schelble is currently associated with BASF Magnetics GmbH, where he continues to innovate in the field of magnetic recording technology. His work has been instrumental in developing products that meet the demands of modern recording applications.

Collaborations

Schelble has collaborated with notable colleagues such as Reinhard Kraetschmer and Gerhard Huebler. Their combined expertise has contributed to the advancement of magnetic recording technologies.

Conclusion

Josef Schelble's contributions to magnetic recording technology through his innovative patents have significantly impacted the industry. His work continues to pave the way for advancements in this field.