Kenichi Ninomiya

Kenichi Ninomiya, a talented inventor from Kanagawa, Japan, has made significant contributions to the field of electronic devices with the invention of various patented technologies. With a total of 21 patents to his name, Ninomiya continues to innovate and push the boundaries of technology.

One of his notable inventions is the electronic pen. This pen features a cylindrical housing with an opening at one end, allowing for easy access to the pen tip. Inside the housing, a cylindrical member is securely fixed to the pen, while a core body made of a pigment-containing material is inserted through the opening. The core body is designed with a larger diameter compared to the difference between the outer and inner diameters of the cylindrical member, ensuring a snug fit. Additionally, the core body can be easily pulled out of the housing, enhancing the pen's usability.

In addition to the electronic pen, Ninomiya has also designed a position indicator for efficient replacement of a component with a writing function. This indicator allows the component to be inserted and extracted into a first housing via a second opening. When the second opening of the first housing and a third opening of a second housing are engaged with the writing component inserted, a resonant circuit is formed. This circuit enables electrical connection between a coil inside the first housing and a writing pressure detector within the second housing.

Kenichi Ninomiya is affiliated with Wacom Corporation, a renowned company in the field of digitized drawing tablets and accompanying accessories. As a valuable member of the Wacom team, he collaborates with colleagues such as Kohei Tanaka and Takenori Kaneda to further advance their technological innovations.

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