This inventor holds 5 USPTO granted patents, plus 1 CIPO patent. Top assignee: Mitsubishi Denki Kabushiki Kaisha. Active years: 1991-2001.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Fukuyama, JP (1991)
- Hiroshima, JP (1995 - 1998)
- Tokyo, JP (2001)
Company Filing History:
Years Active: 1991-2001
Title: Susumu Tokumaru: Innovator in Inkjet Technology
Introduction
Susumu Tokumaru is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of inkjet technology, holding a total of 5 patents. His innovative work has addressed critical challenges in the performance and reliability of inkjet printers.
Latest Patents
One of Tokumaru's latest patents is an advanced inkjet printer designed to solve the issue of ink discharge when bubbles are present in the ink chamber of the print head. This printer utilizes a bubble detection circuit that measures the impedance of the piezoelectric element at specific frequencies. By analyzing the impedance versus frequency characteristics, the printer can determine the presence of bubbles and perform an optimal head recovery operation, ensuring stable and high-quality printed output.
Another notable patent is for a bubble remover for inkjet heads, which effectively eliminates bubbles that can hinder ink performance. This invention features an inkjet head with an ink tank and a reservoir equipped with a nozzle array. By applying negative pressure and utilizing an ink suction device, the system can introduce outside air into the ink reservoir, allowing for the complete removal of bubbles and maintaining a full ink state.
Career Highlights
Throughout his career, Tokumaru has worked with notable companies, including Mitsubishi Electric Corporation and Mitsubishi Heavy Industries. His experience in these organizations has contributed to his expertise in developing innovative inkjet technologies.
Collaborations
Tokumaru has collaborated with esteemed colleagues such as Yoshitaka Iwashita and Hiroshi Fukumoto. Their combined efforts have led to advancements in the field of inkjet printing.
Conclusion
Susumu Tokumaru's contributions to inkjet technology have significantly impacted the industry. His innovative patents and collaborations demonstrate his commitment to enhancing the performance and reliability of inkjet printers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile