Hiromi Demizu

Title: Hiromi Demizu: Innovator in Electrophotographic Technology

Introduction

Hiromi Demizu is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of electrophotographic image forming equipment, holding a total of seven patents. His work focuses on enhancing the efficiency and effectiveness of image development processes.

Latest Patents

One of Demizu's latest patents is the "Bias application control device for image forming equipment." This device is designed to control the application of a bias for development in electrophotographic image forming equipment. It forms a latent image on a photoconductive element and develops it using a magnetic brush formed by a dry two-component developer. A detector is strategically placed between the optics and the developing unit to detect the passage of charged areas on the photoconductive element. The bias is activated and deactivated based on the detection of specific edges of the charged area, ensuring precise timing for optimal development.

Another significant patent is the "Developing device using a single component developer." This device employs a non-magnetic one-component toner and includes a developing sleeve that rotates past a developing region. The toner is supplied from a storage tank to the developing sleeve via a flexible supply roller, which maintains sliding contact with the sleeve. This innovative design allows for the effective application of non-magnetic toner, forming a thin film of charged toner for developing electrostatic latent images.

Career Highlights

Demizu has worked with prominent companies, including Ricoh Company, Ltd. His experience in the industry has allowed him to refine his inventions and contribute to advancements in imaging technology.

Collaborations

Throughout his career, Demizu has collaborated with talented individuals such as Ryubun Seimiya and Noriyoshi Tarumi. These partnerships have fostered innovation and creativity in his projects.

Conclusion

Hiromi Demizu's contributions to electrophotographic technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the development of imaging equipment, showcasing the importance of innovation in technology.