Teizou Tamura

Title: Teizou Tamura: Innovator in Magnetic Head Technology

Introduction

Teizou Tamura is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of magnetic head technology, holding 2 patents that showcase his innovative approach to enhancing data recording and retrieval.

Latest Patents

One of his latest patents involves a magnetic head that utilizes a single-crystal Mn--Zn ferrite as a core material. This design features cut-away parts near the gap filled with a glass that has a lower contraction rate than the ferrite. The principal magnetic circuit-forming plane of the core aligns with the {1 1 0} plane of the ferrite, while the angle defined between the <1 0 0> direction within the {1 1 0} plane and the gap forming plane is set between 5 degrees to 40 degrees or 80 degrees to 120 degrees. This innovative construction results in a magnetic head that exhibits excellent write and read characteristics.

Another notable patent is a method for manufacturing a magnetic head for video signals. This method involves a head chip with a track width of a gap that is smaller than the thickness of the core, allowing for high-density recording of video signals. The track width is machined before slicing the bulk into individual head chips, which saves manufacturing time and enhances yield. The machining process employs multiple hard metal wires, such as piano wires, spanned on rollers with precisely spaced grooves, while grinding liquid is applied. This technique minimizes chipping of the core material, ensuring a more efficient manufacturing process.

Career Highlights

Teizou Tamura is associated with Hitachi, Ltd., where he has been able to apply his expertise in magnetic head technology. His work has significantly impacted the efficiency and effectiveness of data recording devices.

Collaborations

Throughout his career, Tamura has collaborated with notable colleagues, including Hideo Fujiwara and Mitsuhiro Kudo. These collaborations have contributed to the advancement of technology in their field.

Conclusion

Teizou Tamura's innovative contributions to magnetic head technology have established him as a key figure in the industry. His patents reflect a commitment to enhancing data recording methods, making a lasting impact on technology.