This inventor holds 35 USPTO granted patents, primarily in Inkjet Printing. Top assignees: Sharp Kabushiki Kaisha Corporation, Nippon Telegraph and Telephone Public Corporation. Active years: 1979-2008.
Location History:
- Yamatokoriyama, JP (1979)
- Soraku, JP (1985)
- Kyoto, JP (1984 - 1986)
- Nara, JP (1988 - 2008)
Company Filing History:
35 out of 25,937 
1 out of 522 Years Active: 1979-2008
Areas of Expertise:
Title: Hisashi Yoshimura: A Pioneer in Ink Cartridge and Image Forming Technology
Introduction
Hisashi Yoshimura is a prominent inventor based in Nara, Japan, holding a remarkable portfolio of 35 patents. His innovative work has significantly contributed to advancements in ink cartridge technology and image forming apparatus, showcasing his expertise and dedication to solving complex technical challenges.
Latest Patents
Among his latest inventions are an ink cartridge and an image forming apparatus. The ink cartridge features an ink containing section with an ink absorbing body crafted from a porous material designed to retain ink efficiently. With a specific condition that satisfies 200 ≤ N·R ≤ 320, where N represents the cell density of the ink absorbing body before it is contained in the ink containing section, and R indicates the compressibility of the ink absorbing body, Yoshimura has successfully engineered a solution that prevents ink leakage during insertion or detachment. This cartridge also promotes a stable ink supply during continuous ejection and optimizes the utilization of the ink cartridge's volume.
Additionally, his image forming apparatus addresses the issue of ink depletion detection accuracy, maintaining performance even in the presence of air bubbles within the ink supplying path. This apparatus comprises an ink storage section, an ink supplying path for delivering ink to the print head, and an electrode that detects the presence or absence of ink in the supplying path, functioning effectively at an ink supply rate of 1.0 cc or less per minute.
Career Highlights
Yoshimura’s career includes significant contributions while working at reputable companies such as Sharp Corporation and Nippon Telegraph and Telephone Public Corporation. His experiences in these industries have allowed him to hone his skills in developing cutting-edge innovations.
Collaborations
Throughout his professional journey, Yoshimura has collaborated with notable coworkers like Norihiro Ochi and Kohji Tsurui. Together, they have fostered a creative environment that has led to the development of pioneering solutions in their respective fields.
Conclusion
Hisashi Yoshimura stands out as an influential figure in the realm of technology innovation. His patents in ink cartridge and image forming apparatus are not only a testament to his inventive mind but also highlight his commitment to enhancing product functionality and user experience. Through his collaborations and career milestones, Yoshimura continues to inspire future generations of inventors and engineers.