This inventor holds 4 USPTO granted patents. Top assignee: Seiko Epson Corporation. Active years: 2001-2005.
Location History:
- Nagano-ken, JP (2003)
- Suwa, JP (2001 - 2005)
Company Filing History:
Years Active: 2001-2005
Title: Kiyofumi Usui: Innovator in Ink Cartridge Technology
Introduction
Kiyofumi Usui is a notable inventor based in Suwa, Japan. He has made significant contributions to the field of ink cartridge technology, holding a total of 4 patents. His work has been instrumental in enhancing the efficiency and functionality of ink cartridges used in printers.
Latest Patents
One of Kiyofumi Usui's latest patents is for an ink cartridge designed for ink jet printers. This innovative cartridge includes an ink chamber for retaining liquid ink and a foam chamber that maintains fluid communication with the ink chamber through a communication hole. The design features an ink supply port that allows ink to flow from a porous body in the foam chamber to the recording head. The foam body is compressed by the ink supply port, optimizing the ink delivery process. The patent also specifies that the ratio of ink initially charged in the ink chamber to the ink absorbed in the porous body should range from 1:1 to 1:3. For color printing, multiple foam and ink cartridges are utilized, and the cartridge is filled under reduced pressure while being evacuated before ink filling.
Career Highlights
Kiyofumi Usui is currently employed at Seiko Epson Corporation, where he continues to innovate in the field of printing technology. His work has contributed to the advancement of ink cartridge designs, making them more efficient and user-friendly.
Collaborations
Throughout his career, Kiyofumi Usui has collaborated with talented individuals such as Eiko Yanagida and Takao Kobayashi. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies in the printing industry.
Conclusion
Kiyofumi Usui's contributions to ink cartridge technology have made a significant impact on the printing industry. His innovative designs and patents continue to shape the future of printing solutions.