Kazuko Ishitsuka

Title: Kazuko Ishitsuka: Innovator in Magneto-Optical Technology

Introduction

Kazuko Ishitsuka is a prominent inventor based in Iwai, Japan. She has made significant contributions to the field of magneto-optical technology, holding a total of 3 patents. Her work focuses on enhancing data storage capabilities through innovative recording mediums.

Latest Patents

One of her latest patents is a magneto-optical recording medium capable of recording multiple value signals. This invention features a transparent substrate with a preformat pattern, which is laminated with a first recording layer that can exist in one different magnetic field region of an applied external magnetic field. Additionally, a second recording layer is included, which can exist in two recording states in magnetic field regions different from that of the first layer. This technology allows for the 4-valued recording of information by assigning signals “1”, “0”, “3”, and “2” to different magnetic field strengths.

Another notable patent is a magnetic head capable of generating multi-stepped external magnetic fields. This invention has led to the development of an optomagnetic recording and reproducing system that demonstrates superior performance with multilayer recording substrates. The system includes an optical head and a magnetic head positioned on opposite sides of the recording substrate. The innovative magnetic head can incorporate multiple independently driven subheads or be constructed with several independently driven windings on a single head.

Career Highlights

Kazuko Ishitsuka is currently employed at Hitachi Maxell, Limited, where she continues to push the boundaries of magneto-optical technology. Her work has been instrumental in advancing the capabilities of data storage systems.

Collaborations

Throughout her career, she has collaborated with notable colleagues, including Katsusuke Shimazaki and Masafumi Yoshihiro. These partnerships have contributed to the success of her innovative projects.

Conclusion

Kazuko Ishitsuka's contributions to magneto-optical technology have established her as a leading inventor in her field. Her patents reflect her commitment to advancing data storage solutions, making a significant impact on the industry.