Location History:
- Kokubunji, JP (1988 - 1989)
- Hino, JP (1995 - 2010)
Company Filing History:
7 out of 42,508 
2 out of 1,267 
1 out of 134 Years Active: 1988-2010
Title: The Innovations of Shin'ichi Nakatsuka
Introduction
Shin'ichi Nakatsuka is a prominent inventor based in Hino, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 8 patents. His work focuses on enhancing the performance and efficiency of laser devices, particularly in applications such as laser beam printers.
Latest Patents
One of Nakatsuka's latest patents is a semiconductor laser device that utilizes a super-lattice structure. This innovative design lowers the resistance of the device by optimizing the extension of electric current within the layer. The lateral conduction of high-density doping in the super-lattice structure effectively decreases the resistance of the laser, which in turn lowers the operation voltage and increases power in nitride-type wide-gap semiconductor devices. These advancements are crucial, especially in scenarios where obtaining crystals with high carrier density is challenging.
Another notable patent is for a laser beam printer and semiconductor laser device suitable for light. This invention addresses the issue of varying dot diameters in color printing. In conventional printers, the spot diameter changes with output levels, leading to unintentional color blending at boundaries. Nakatsuka's semiconductor laser device maintains a consistent spot diameter, ensuring that the printer produces irregular color-free outputs.
Career Highlights
Throughout his career, Nakatsuka has worked with esteemed companies such as Hitachi, Ltd. and Hitachi Koki Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the semiconductor field.
Collaborations
Some of Nakatsuka's notable coworkers include Naoki Chinone and Takashi Kajimura. Their collaborative efforts have further advanced the innovations in laser technology.
Conclusion
Shin'ichi Nakatsuka's contributions to semiconductor technology and laser devices have made a significant impact in the industry. His innovative patents continue to pave the way for advancements in laser applications, showcasing his expertise and dedication to the field.