Location History:
- Suwa, JP (1998 - 2000)
- Nagano, JP (1999 - 2000)
Company Filing History:
5 out of 33,436 
4 out of 168 
2 out of 5 Years Active: 1998-2000
Title: Eiji Tukahara: Innovator in Stamp-Making and Dial Input Technology
Introduction
Eiji Tukahara is a notable inventor based in Suwa, Japan. He has made significant contributions to the fields of stamp-making apparatus and dial input devices. With a total of 7 patents to his name, Tukahara's innovations have had a lasting impact on technology.
Latest Patents
Tukahara's latest patents include a stamp-making apparatus and a function changeover mechanism. The stamp-making apparatus features a transparent presser plate that is aligned parallel to the stamp-making object material. An ink ribbon, which has a stamp image formed on it, is pressed against the object material through the presser plate. This design allows for exposure of the stamp-making object material to light via the ink ribbon, functioning as a mask. The apparatus includes a ribbon feeder that rolls out the ink ribbon to a position facing the stamp-making object material and then rolls it back up. The relative movement between the presser plate and the object material is crucial for urging the ink ribbon against the material. Additionally, the tension of the ink ribbon is regulated in conjunction with this movement.
The dial input device is another of Tukahara's innovations. It consists of a rotatable dial arranged on a support member, with various characters allocated around its circumference. The device includes first contact members that are divided into multiple parts, featuring a mix of electrically conductive and non-conductive portions. A second contact member is also present, which is entirely electrically conductive. The characters are expressed through identifying patterns generated by the interaction of these contact members.
Career Highlights
Throughout his career, Eiji Tukahara has worked with prominent companies such as Seiko Epson Corporation and King Jim Co., Ltd. His experience in these organizations has contributed to his development as an inventor and innovator.
Collaborations
Tukahara has collaborated with notable individuals in the field, including Hideki Oikawa and Kenichi Nakajima. These partnerships have likely enriched his work and led to further advancements in his inventions.
Conclusion
Eiji Tukahara's contributions to the fields of stamp-making and dial input technology demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to enhancing functionality and efficiency in these areas.