Location History:
- Sendai, JP (1997)
- Miyagi, JP (2002)
Company Filing History:
Years Active: 1997-2002
Title: Inventor Shigenobu Irokawa: Innovating Liquid Measurement and Stacking Solutions
Introduction
Shigenobu Irokawa is an accomplished inventor based in Miyagi, Japan, known for his innovative contributions to liquid measurement and printing technologies. With a total of two patents to his name, Irokawa has made significant advancements in both industrial applications and commercial printing processes.
Latest Patents
Irokawa's latest inventions include:
1. **Method and device for determining the amount of a liquid existing in a container**: This invention outlines a sophisticated method and device designed to measure the volume of ink or similar liquids within a container. It employs a resonance circuit positioned on the container, where a voltage of a preselected frequency is applied to an external drive coil. This action induces a corresponding voltage in the resonance circuit, which subsequently generates a voltage in a sense coil, also located outside the container. The amount of liquid is then determined based on the induced voltage in the sense coil.
2. **Small-size-sheet stacking unit and cleaning sheet therefor**: This invention pertains to a small-size-sheet stacking unit that attaches to the printed sheet tray of a printing machine. Designed for small printed sheets, the unit consists of a guide plate, multiple carriers for supporting the edges of printed sheets, a position sensor to detect sheet readiness, and a driver to actuate the carriers. After printing, the unit can be detached from the machine, simplifying the handling of small printed sheets.
Career Highlights
Shigenobu Irokawa works for Tohoku Ricoh Co., Ltd., where he has leveraged his expertise to pioneer inventions that enhance operational efficiency in printing and liquid measurement. His focus on practical solutions for everyday industrial problems has gained him recognition in his field.
Collaborations
Throughout his career, Irokawa has collaborated with notable colleagues, including Takanori Endo and Tadashi Yonezawa. These partnerships have fostered a creative environment that cultivates innovative ideas and effective problem-solving strategies within the company.
Conclusion
Shigenobu Irokawa stands out as a prominent inventor in Japan, whose patented technologies reflect a commitment to innovation and functionality. His work with Tohoku Ricoh Co., Ltd. demonstrates the impactful relationship between inventors and their contributions to advancing technology in various industries.