Location History:
- Kanagawa, JP (1996)
- Atsugi, JP (1996 - 1999)
Company Filing History:
6 out of 1,576 
1 out of 9,639 
Years Active: 1996-1999
Title: Keiichi Setsumasa: Innovator in Magnetic Tape Technology
Introduction
Keiichi Setsumasa is a notable inventor based in Atsugi, Japan. He has made significant contributions to the field of magnetic tape technology, holding a total of 6 patents. His innovative designs have improved the functionality and efficiency of cassette tape drives and related mechanisms.
Latest Patents
One of his latest patents is for a cassette tape drive featuring an improved mechanism for opening and closing. This design simplifies the construction of the cassette lid opening and closing mechanism, allowing for reduced production costs. The mechanism includes holes in the lid opening and closing levers, which pivot on support shafts located on the side plates of the cassette holder. The hooks at the ends of these levers are designed to fold inwardly and then forwardly, facilitating the opening of the cassette lid when the tape is inserted. This design limits the play of the levers, eliminating the need for highly precise machining.
Another significant patent is the tape guiding pole angle adjusting mechanism. This mechanism is designed for magnetic tape recording and reproducing apparatuses. It includes a base portion, a tape guiding pole, and a sub-arm that allows for adjustable inclination angles of the tape guiding pole. The adjusting screw mechanism enables fine adjustments to the angle, enhancing the overall performance of the device.
Career Highlights
Throughout his career, Keiichi Setsumasa has worked with prominent companies such as Mitsumi Electric Company Ltd. and Hewlett-Packard Company. His experience in these organizations has contributed to his expertise in developing innovative solutions in the field of magnetic tape technology.
Collaborations
He has collaborated with notable coworkers, including Ikuichiro Nawa and Ryoichi Annen. Their combined efforts have led to advancements in the technology surrounding magnetic tape devices.
Conclusion
Keiichi Setsumasa's contributions to magnetic tape technology through his innovative patents and collaborations have significantly impacted the industry. His work continues to influence the design and functionality of cassette tape drives and related mechanisms.