Nishinomiya, Japan

Chikara Tsutsui

This inventor holds 31 USPTO granted patents, primarily in Image Formation Technology. Top assignees: Minolta Company, Ltd., Konica Minolta Business Technologies, Inc., Konica-Minolta Holdings, Inc.. Active years: 1997-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Chikara Tsutsui. Retrieved from https://idiyas.com/inventor/chikara-tsutsui

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 74.2

Average Co-Inventor Count = 4.0

ph-index = 8

Forward Citations = 139(Granted Patents)


Company Filing History:


Years Active: 1997-2013

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Areas of Expertise:
Toner
Electrostatic Latent Image
Image Forming Apparatus
Developing Device
Mono-Component Developer
Full-Color Image
Non-Magnetic Toner
Charging Particles
Agitating Portion
Production Method
External Additive
Developing Roller
31 patents (USPTO):Explore Patents

Title: The Innovations of Chikara Tsutsui: A Leader in Toner Technology

Introduction

Chikara Tsutsui, an accomplished inventor from Nishinomiya, Japan, has made significant contributions to the field of imaging technology with a remarkable portfolio of 31 patents. His work primarily focuses on developing advanced toner solutions and image-forming apparatuses, demonstrating his commitment to innovation in the imaging industry.

Latest Patents

Tsutsui's recent patents highlight his expertise in hybrid development. His notable inventions include a toner for hybrid development consisting of toner particles that contain a binder resin and colorant, charged through friction-contact with a carrier. This toner works alongside reverse polarity particles, which are charged oppositely when in contact with the carrier, as well as same polarity particles that maintain their charge. This innovative formula leads to improved image quality and performance. Additionally, he developed a developer for hybrid development that integrates his revolutionary toner with a carrier, and an image-forming apparatus designed for optimized usage of this developer.

Another of Tsutsui’s advanced inventions is the developing device, which includes a developer transporting member designed to move the toner and carrier efficiently. Its innovative design includes electric field forming devices for enhanced toner shifting between the transporting member and an electrostatic latent image carrying member. The operation of these devices is meticulously controlled, ensuring precision in image formation.

Career Highlights

Throughout his career, Chikara Tsutsui has worked with prominent companies such as Minolta Company, Ltd. and Konica Minolta Business Technologies, Inc. His involvement in these institutions has positioned him at the forefront of imaging technology development, where he has applied his inventive ideas to create groundbreaking products that have significantly impacted the industry.

Collaborations

Collaboration has played a key role in Tsutsui’s success. He has worked alongside notable professionals such as Masahiro Anno and Minoru Nakamura. Together, they have tackled complex challenges and driven advancements in imaging technology, leading to their collective contributions in patenting innovative solutions.

Conclusion

Chikara Tsutsui stands as a prominent figure in the realm of imaging technology with his extensive patent portfolio and impactful inventions. His dedication to developing advanced toners and image-forming apparatuses continues to redefine standards within the industry. As technology progresses, Tsutsui's contributions will undoubtedly inspire future innovations in imaging solutions.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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